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46a1356219
procps/top/top.c
Jim Warner 46a1356219 top: correct cursor positioning for all ^Z or ^C cases 
Some more (very obscure) conditions where a suspension
or program end might embed the shell prompt within top
output have been uncovered beyond the 2 already known.

We had already covered some suspend/end contingencies:
1. the users were using the 'fields management' screen
2. the users were prompted for any line oriented input

However, there remained some situations where ^Z or ^C
could still produce a misplaced cursor + shell prompt:
3. the 'g' command while waiting for the window choice
4. the 'W' command if about to overwrite an old rcfile
5. the '=' command when exploiting the Inspect feature
6. the period during which any error message was shown

But, even when all those bases are covered there still
remains a remote possibility that such interrupts will
occur during a top repaint cycle. So rather than throw
yet more code at these self-inflicted problems perhaps
it is better if we just throw in the proverbial towel.

Thus, I'll take the only sane approach and restore the
results expected ever since top's inception and before
scrollback buffers entered the picture. Namely, with a
^Z or ^C the cursor will be placed on the final screen
row. That usually means it will immediately follow the
last output line but it may follow many blank lines if
the user interrupts top when *not* on the main screen.

Reference(s):
. expanded repositioning (for line oriented input)
commit 33104a2bcc
. introduced repositioning (for fields management)
commit 5c974ff44d
. scrollback buffers (the cursor handling changes)
commit dedaf6e1a8

Signed-off-by: Jim Warner <james.warner@comcast.net>
2013-08-08 19:21:22 +02:00

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/* top.c - Source file: show Linux processes */
/*
* Copyright (c) 2002-2013, by: James C. Warner
* All rights reserved. 8921 Hilloway Road
* Eden Prairie, Minnesota 55347 USA
*
* This file may be used subject to the terms and conditions of the
* GNU Library General Public License Version 2, or any later version
* at your option, as published by the Free Software Foundation.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*/
/* For contributions to this program, the author wishes to thank:
* Craig Small, <csmall@small.dropbear.id.au>
* Albert D. Cahalan, <albert@users.sf.net>
* Sami Kerola, <kerolasa@iki.fi>
*/
#include <sys/ioctl.h>
#include <sys/resource.h>
#include <sys/select.h>
#include <sys/time.h>
#include <sys/types.h>
#include <ctype.h>
#include <curses.h>
#ifndef NUMA_DISABLE
#include <dlfcn.h>
#endif
#include <errno.h>
#include <fcntl.h>
#include <pwd.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <term.h> // foul sob, defines all sorts of stuff...
#undef tab
#undef TTY
#include <termios.h>
#include <time.h>
#include <unistd.h>
#include <values.h>
#include "../include/fileutils.h"
#include "../include/nls.h"
#include "../proc/devname.h"
#include "../proc/procps.h"
#include "../proc/readproc.h"
#include "../proc/sig.h"
#include "../proc/sysinfo.h"
#include "../proc/version.h"
#include "../proc/wchan.h"
#include "../proc/whattime.h"
#include "top.h"
#include "top_nls.h"
/*###### Miscellaneous global stuff ####################################*/
/* The original and new terminal definitions
(only set when not in 'Batch' mode) */
static struct termios Tty_original, // our inherited terminal definition
#ifdef TERMIOS_ONLY
Tty_tweaked, // for interactive 'line' input
#endif
Tty_raw; // for unsolicited input
static int Ttychanged = 0;
/* Last established cursor state/shape */
static const char *Cursor_state = "";
/* Program name used in error messages and local 'rc' file name */
static char *Myname;
/* Our constant sigset, so we need initialize it but once */
static sigset_t Sigwinch_set;
/* The 'local' config file support */
static char Rc_name [OURPATHSZ];
static RCF_t Rc = DEF_RCFILE;
static int Rc_questions;
/* The run-time acquired page stuff */
static unsigned Page_size;
static unsigned Pg2K_shft = 0;
/* SMP, Irix/Solaris mode, Linux 2.5.xx support */
static int Cpu_faux_tot;
static float Cpu_pmax;
static const char *Cpu_States_fmts;
/* Specific process id monitoring support */
static pid_t Monpids [MONPIDMAX] = { 0 };
static int Monpidsidx = 0;
/* Current screen dimensions.
note: the number of processes displayed is tracked on a per window
basis (see the WIN_t). Max_lines is the total number of
screen rows after deducting summary information overhead. */
/* Current terminal screen size. */
static int Screen_cols, Screen_rows, Max_lines;
/* This is really the number of lines needed to display the summary
information (0 - nn), but is used as the relative row where we
stick the cursor between frames. */
static int Msg_row;
/* The nearly complete scroll coordinates message for the current
window, built at the time column headers are constructed */
static char Scroll_fmts [SMLBUFSIZ];
/* Global/Non-windows mode stuff that is NOT persistent */
static int No_ksyms = -1, // set to '0' if ksym avail, '1' otherwise
PSDBopen = 0, // set to '1' if psdb opened (now postponed)
Batch = 0, // batch mode, collect no input, dumb output
Loops = -1, // number of iterations, -1 loops forever
Secure_mode = 0, // set if some functionality restricted
Thread_mode = 0, // set w/ 'H' - show threads via readeither()
Width_mode = 0; // set w/ 'w' - potential output override
/* Unchangeable cap's stuff built just once (if at all) and
thus NOT saved in a WIN_t's RCW_t. To accommodate 'Batch'
mode, they begin life as empty strings so the overlying
logic need not change ! */
static char Cap_clr_eol [CAPBUFSIZ] = "", // global and/or static vars
Cap_nl_clreos [CAPBUFSIZ] = "", // are initialized to zeros!
Cap_clr_scr [CAPBUFSIZ] = "", // the assignments used here
Cap_curs_norm [CAPBUFSIZ] = "", // cost nothing but DO serve
Cap_curs_huge [CAPBUFSIZ] = "", // to remind people of those
Cap_curs_hide [CAPBUFSIZ] = "", // batch requirements!
Cap_clr_eos [CAPBUFSIZ] = "",
Cap_home [CAPBUFSIZ] = "",
Cap_norm [CAPBUFSIZ] = "",
Cap_reverse [CAPBUFSIZ] = "",
Caps_off [CAPBUFSIZ] = "",
Caps_endline [CAPBUFSIZ] = "";
#ifndef RMAN_IGNORED
static char Cap_rmam [CAPBUFSIZ] = "",
Cap_smam [CAPBUFSIZ] = "";
/* set to 1 if writing to the last column would be troublesome
(we don't distinguish the lowermost row from the other rows) */
static int Cap_avoid_eol = 0;
#endif
static int Cap_can_goto = 0;
/* Some optimization stuff, to reduce output demands...
The Pseudo_ guys are managed by adj_geometry and frame_make. They
are exploited in a macro and represent 90% of our optimization.
The Stdout_buf is transparent to our code and regardless of whose
buffer is used, stdout is flushed at frame end or if interactive. */
static char *Pseudo_screen;
static int Pseudo_row = PROC_XTRA;
static size_t Pseudo_size;
#ifndef OFF_STDIOLBF
// less than stdout's normal buffer but with luck mostly '\n' anyway
static char Stdout_buf[2048];
#endif
/* Our four WIN_t's, and which of those is considered the 'current'
window (ie. which window is associated with any summ info displayed
and to which window commands are directed) */
static WIN_t Winstk [GROUPSMAX];
static WIN_t *Curwin;
/* Frame oriented stuff that can't remain local to any 1 function
and/or that would be too cumbersome managed as parms,
and/or that are simply more efficiently handled as globals
[ 'Frames_...' (plural) stuff persists beyond 1 frame ]
[ or are used in response to async signals received ! ] */
static volatile int Frames_signal; // time to rebuild all column headers
static int Frames_libflags; // PROC_FILLxxx flags
static int Frame_maxtask; // last known number of active tasks
// ie. current 'size' of proc table
static float Frame_etscale; // so we can '*' vs. '/' WHEN 'pcpu'
static unsigned Frame_running, // state categories for this frame
Frame_sleepin,
Frame_stopped,
Frame_zombied;
static int Frame_srtflg, // the subject window's sort direction
Frame_ctimes, // the subject window's ctimes flag
Frame_cmdlin; // the subject window's cmdlin flag
/* Support for 'history' processing so we can calculate %cpu */
static int HHist_siz; // max number of HST_t structs
static HST_t *PHist_sav, // alternating 'old/new' HST_t anchors
*PHist_new;
#ifndef OFF_HST_HASH
#define HHASH_SIZ 1024
static int HHash_one [HHASH_SIZ], // actual hash tables ( hereafter known
HHash_two [HHASH_SIZ], // as PHash_sav/PHash_new )
HHash_nul [HHASH_SIZ]; // 'empty' hash table image
static int *PHash_sav = HHash_one, // alternating 'old/new' hash tables
*PHash_new = HHash_two;
#endif
/* Support for automatically sized fixed-width column expansions.
* (hopefully, the macros help clarify/document our new 'feature') */
static int Autox_array [P_MAXPFLGS],
Autox_found;
#define AUTOX_NO P_MAXPFLGS
#define AUTOX_COL(f) if (P_MAXPFLGS > f) Autox_array[f] = Autox_found = 1
#define AUTOX_MODE (0 > Rc.fixed_widest)
/* Support for scale_mem and scale_num (to avoid duplication. */
#ifdef CASEUP_SUFIX // nls_maybe
static char Scaled_sfxtab[] = { 'K', 'M', 'G', 'T', 'P', 'E', 0 };
#else // nls_maybe
static char Scaled_sfxtab[] = { 'k', 'm', 'g', 't', 'p', 'e', 0 };
#endif
/* Support for NUMA Node display, node expansion/targeting and
run-time dynamic linking with libnuma.so treated as a plugin */
static int Numa_node_tot;
static int Numa_node_sel = -1;
#ifndef NUMA_DISABLE
static void *Libnuma_handle;
#if defined(PRETEND_NUMA) || defined(PRETEND8CPUS)
static int Numa_max_node(void) { return 3; }
static int Numa_node_of_cpu(int num) { return (num % 4); }
#else
static int (*Numa_max_node)(void);
static int (*Numa_node_of_cpu)(int num);
#endif
#endif
/*###### Sort callbacks ################################################*/
/*
* These happen to be coded in the enum identifier alphabetic order,
* not the order of the enum 'pflgs' value. Also note that a callback
* routine may serve more than one column.
*/
SCB_STRS(CGR, cgroup[0])
SCB_STRV(CMD, Frame_cmdlin, cmdline, cmd)
SCB_NUM1(COD, trs)
SCB_NUMx(CPN, processor)
SCB_NUM1(CPU, pcpu)
SCB_NUM1(DAT, drs)
SCB_NUM1(DRT, dt)
SCB_STRS(ENV, environ[0])
SCB_NUM1(FLG, flags)
SCB_NUM1(FL1, maj_flt)
SCB_NUM1(FL2, min_flt)
SCB_NUM1(FV1, maj_delta)
SCB_NUM1(FV2, min_delta)
SCB_NUMx(GID, egid)
SCB_STRS(GRP, egroup)
SCB_NUMx(NCE, nice)
#ifdef OOMEM_ENABLE
SCB_NUM1(OOA, oom_adj)
SCB_NUM1(OOM, oom_score)
#endif
SCB_NUMx(PGD, pgrp)
SCB_NUMx(PID, tid)
SCB_NUMx(PPD, ppid)
SCB_NUMx(PRI, priority)
SCB_NUM1(RES, resident) // also serves MEM !
SCB_STRX(SGD, supgid)
SCB_STRS(SGN, supgrp)
SCB_NUM1(SHR, share)
SCB_NUM1(SID, session)
SCB_NUMx(STA, state)
SCB_NUM1(SWP, vm_swap)
SCB_NUMx(TGD, tgid)
SCB_NUMx(THD, nlwp)
// also serves TM2 !
static int SCB_NAME(TME) (const proc_t **P, const proc_t **Q) {
if (Frame_ctimes) {
if (((*P)->cutime + (*P)->cstime + (*P)->utime + (*P)->stime)
< ((*Q)->cutime + (*Q)->cstime + (*Q)->utime + (*Q)->stime))
return SORT_lt;
if (((*P)->cutime + (*P)->cstime + (*P)->utime + (*P)->stime)
> ((*Q)->cutime + (*Q)->cstime + (*Q)->utime + (*Q)->stime))
return SORT_gt;
} else {
if (((*P)->utime + (*P)->stime) < ((*Q)->utime + (*Q)->stime))
return SORT_lt;
if (((*P)->utime + (*P)->stime) > ((*Q)->utime + (*Q)->stime))
return SORT_gt;
}
return SORT_eq;
}
SCB_NUM1(TPG, tpgid)
SCB_NUMx(TTY, tty)
SCB_NUMx(UED, euid)
SCB_STRS(UEN, euser)
SCB_NUMx(URD, ruid)
SCB_STRS(URN, ruser)
SCB_NUMx(USD, suid)
SCB_NUM2(USE, resident, vm_swap)
SCB_STRS(USN, suser)
SCB_NUM1(VRT, size)
SCB_NUM1(WCH, wchan)
#ifdef OFF_HST_HASH
/* special sort for procs_hlp() ! ------------------------ */
static int sort_HST_t (const HST_t *P, const HST_t *Q) {
return P->pid - Q->pid;
}
#endif
/*###### Tiny useful routine(s) ########################################*/
/*
* This routine simply formats whatever the caller wants and
* returns a pointer to the resulting 'const char' string... */
static const char *fmtmk (const char *fmts, ...) __attribute__((format(printf,1,2)));
static const char *fmtmk (const char *fmts, ...) {
static char buf[BIGBUFSIZ]; // with help stuff, our buffer
va_list va; // requirements now exceed 1k
va_start(va, fmts);
vsnprintf(buf, sizeof(buf), fmts, va);
va_end(va);
return (const char *)buf;
} // end: fmtmk
/*
* This guy is just our way of avoiding the overhead of the standard
* strcat function (should the caller choose to participate) */
static inline char *scat (char *dst, const char *src) {
while (*dst) dst++;
while ((*(dst++) = *(src++)));
return --dst;
} // end: scat
/*
* This guy just facilitates Batch and protects against dumb ttys
* -- we'd 'inline' him but he's only called twice per frame,
* yet used in many other locations. */
static const char *tg2 (int x, int y) {
// it's entirely possible we're trying for an invalid row...
return Cap_can_goto ? tgoto(cursor_address, x, y) : "";
} // end: tg2
/*###### Exit/Interrput routines #######################################*/
/*
* Reset the tty, if necessary */
static void at_eoj (void) {
if (Ttychanged) {
tcsetattr(STDIN_FILENO, TCSAFLUSH, &Tty_original);
if (keypad_local) putp(keypad_local);
putp(tg2(0, Screen_rows));
putp("\n");
#ifdef OFF_SCROLLBK
if (exit_ca_mode) {
// this next will also replace top's most recent screen with the
// original display contents that were visible at our invocation
putp(exit_ca_mode);
}
#endif
putp(Cap_curs_norm);
putp(Cap_clr_eol);
#ifndef RMAN_IGNORED
putp(Cap_smam);
#endif
}
fflush(stdout);
} // end: at_eoj
/*
* The real program end */
static void bye_bye (const char *str) NORETURN;
static void bye_bye (const char *str) {
at_eoj(); // restore tty in preparation for exit
#ifdef ATEOJ_RPTSTD
{ proc_t *p;
if (!str && !Frames_signal && Ttychanged) { fprintf(stderr,
"\n%s's Summary report:"
"\n\tProgram"
"\n\t Linux version = %u.%u.%u, %s"
"\n\t Hertz = %u (%u bytes, %u-bit time)"
"\n\t Page_size = %d, Cpu_faux_tot = %d, smp_num_cpus = %d"
"\n\t sizeof(CPU_t) = %u, sizeof(HST_t) = %u (%u HST_t's/Page), HHist_siz = %u"
"\n\t sizeof(proc_t) = %u, sizeof(proc_t.cmd) = %u, sizeof(proc_t*) = %u"
"\n\t Frames_libflags = %08lX"
"\n\t SCREENMAX = %u, ROWMINSIZ = %u, ROWMAXSIZ = %u"
"\n\t PACKAGE = '%s', LOCALEDIR = '%s'"
"\n\tTerminal: %s"
"\n\t device = %s, ncurses = v%s"
"\n\t max_colors = %d, max_pairs = %d"
"\n\t Cap_can_goto = %s"
"\n\t Screen_cols = %d, Screen_rows = %d"
"\n\t Max_lines = %d, most recent Pseudo_size = %u"
#ifndef OFF_STDIOLBF
"\n\t Stdout_buf = %u, BUFSIZ = %u"
#endif
"\n\tWindows and Curwin->"
"\n\t sizeof(WIN_t) = %u, GROUPSMAX = %d"
"\n\t winname = %s, grpname = %s"
#ifdef CASEUP_HEXES
"\n\t winflags = %08X, maxpflgs = %d"
#else
"\n\t winflags = %08x, maxpflgs = %d"
#endif
"\n\t sortindx = %d, fieldscur = %s"
"\n\t maxtasks = %d, varcolsz = %d, winlines = %d"
"\n\t strlen(columnhdr) = %d"
"\n"
, __func__
, LINUX_VERSION_MAJOR(linux_version_code)
, LINUX_VERSION_MINOR(linux_version_code)
, LINUX_VERSION_PATCH(linux_version_code)
, procps_version
, (unsigned)Hertz, (unsigned)sizeof(Hertz), (unsigned)sizeof(Hertz) * 8
, Page_size, Cpu_faux_tot, (int)smp_num_cpus, (unsigned)sizeof(CPU_t)
, (unsigned)sizeof(HST_t), Page_size / (unsigned)sizeof(HST_t), HHist_siz
, (unsigned)sizeof(proc_t), (unsigned)sizeof(p->cmd), (unsigned)sizeof(proc_t*)
, (long)Frames_libflags
, (unsigned)SCREENMAX, (unsigned)ROWMINSIZ, (unsigned)ROWMAXSIZ
, PACKAGE, LOCALEDIR
#ifdef PRETENDNOCAP
, "dumb"
#else
, termname()
#endif
, ttyname(STDOUT_FILENO), NCURSES_VERSION
, max_colors, max_pairs
, Cap_can_goto ? "yes" : "No!"
, Screen_cols, Screen_rows
, Max_lines, (unsigned)Pseudo_size
#ifndef OFF_STDIOLBF
, (unsigned)sizeof(Stdout_buf), (unsigned)BUFSIZ
#endif
, (unsigned)sizeof(WIN_t), GROUPSMAX
, Curwin->rc.winname, Curwin->grpname
, Curwin->rc.winflags, Curwin->maxpflgs
, Curwin->rc.sortindx, Curwin->rc.fieldscur
, Curwin->rc.maxtasks, Curwin->varcolsz, Curwin->winlines
, (int)strlen(Curwin->columnhdr)
);
}
}
#endif // end: ATEOJ_RPTSTD
#ifndef OFF_HST_HASH
#ifdef ATEOJ_RPTHSH
if (!str && !Frames_signal && Ttychanged) {
int i, j, pop, total_occupied, maxdepth, maxdepth_sav, numdepth
, cross_foot, sz = HHASH_SIZ * (unsigned)sizeof(int);
int depths[HHASH_SIZ];
for (i = 0, total_occupied = 0, maxdepth = 0; i < HHASH_SIZ; i++) {
int V = PHash_new[i];
j = 0;
if (-1 < V) {
++total_occupied;
while (-1 < V) {
V = PHist_new[V].lnk;
if (-1 < V) j++;
}
}
depths[i] = j;
if (maxdepth < j) maxdepth = j;
}
maxdepth_sav = maxdepth;
fprintf(stderr,
"\n%s's Supplementary HASH report:"
"\n\tTwo Tables providing for %d entries each + 1 extra for 'empty' image"
"\n\t%dk (%d bytes) per table, %d total bytes (including 'empty' image)"
"\n\tResults from latest hash (PHash_new + PHist_new)..."
"\n"
"\n\tTotal hashed = %d"
"\n\tLevel-0 hash entries = %d (%d%% occupied)"
"\n\tMax Depth = %d"
"\n\n"
, __func__
, HHASH_SIZ, sz / 1024, sz, sz * 3
, Frame_maxtask
, total_occupied, (total_occupied * 100) / HHASH_SIZ
, maxdepth + 1);
if (total_occupied) {
for (pop = total_occupied, cross_foot = 0; maxdepth; maxdepth--) {
for (i = 0, numdepth = 0; i < HHASH_SIZ; i++)
if (depths[i] == maxdepth) ++numdepth;
fprintf(stderr,
"\t %5d (%3d%%) hash table entries at depth %d\n"
, numdepth, (numdepth * 100) / total_occupied, maxdepth + 1);
pop -= numdepth;
cross_foot += numdepth;
if (0 == pop && cross_foot == total_occupied) break;
}
if (pop) {
fprintf(stderr, "\t %5d (%3d%%) unchained hash table entries\n"
, pop, (pop * 100) / total_occupied);
cross_foot += pop;
}
fprintf(stderr,
"\t -----\n"
"\t %5d total entries occupied\n", cross_foot);
if (maxdepth_sav) {
fprintf(stderr, "\nPIDs at max depth: ");
for (i = 0; i < HHASH_SIZ; i++)
if (depths[i] == maxdepth_sav) {
j = PHash_new[i];
fprintf(stderr, "\n\tpos %4d: %05d", i, PHist_new[j].pid);
while (-1 < j) {
j = PHist_new[j].lnk;
if (-1 < j) fprintf(stderr, ", %05d", PHist_new[j].pid);
}
}
fprintf(stderr, "\n");
}
}
}
#endif // end: ATEOJ_RPTHSH
#endif // end: OFF_HST_HASH
#ifndef NUMA_DISABLE
if (Libnuma_handle) dlclose(Libnuma_handle);
#endif
if (str) {
fputs(str, stderr);
exit(EXIT_FAILURE);
}
exit(EXIT_SUCCESS);
} // end: bye_bye
/*
* Standard error handler to normalize the look of all err output */
static void error_exit (const char *str) NORETURN;
static void error_exit (const char *str) {
static char buf[MEDBUFSIZ];
/* we'll use our own buffer so callers can still use fmtmk() and, after
twelve long years, 2013 was the year we finally eliminated the leading
tab character -- now our message can get lost in screen clutter too! */
snprintf(buf, sizeof(buf), "%s: %s\n", Myname, str);
bye_bye(buf);
} // end: error_exit
/*
* Handle library errors ourselves rather than accept a default
* fprintf to stderr (since we've mucked with the termios struct) */
static void library_err (const char *fmts, ...) NORETURN;
static void library_err (const char *fmts, ...) {
static char tmp[MEDBUFSIZ];
va_list va;
va_start(va, fmts);
vsnprintf(tmp, sizeof(tmp), fmts, va);
va_end(va);
error_exit(tmp);
} // end: library_err
/*
* Catches all remaining signals not otherwise handled */
static void sig_abexit (int sig) {
sigset_t ss;
// POSIX.1-2004 async-signal-safe: sigfillset, sigprocmask, signal, raise
sigfillset(&ss);
sigprocmask(SIG_BLOCK, &ss, NULL);
at_eoj(); // restore tty in preparation for exit
fprintf(stderr, N_fmt(EXIT_signals_fmt)
, sig, signal_number_to_name(sig), Myname);
signal(sig, SIG_DFL); // allow core dumps, if applicable
raise(sig); // ( plus set proper return code )
} // end: sig_abexit
/*
* Catches:
* SIGALRM, SIGHUP, SIGINT, SIGPIPE, SIGQUIT, SIGTERM,
* SIGUSR1 and SIGUSR2 */
static void sig_endpgm (int dont_care_sig) NORETURN;
static void sig_endpgm (int dont_care_sig) {
sigset_t ss;
// POSIX.1-2004 async-signal-safe: sigfillset, sigprocmask
sigfillset(&ss);
sigprocmask(SIG_BLOCK, &ss, NULL);
Frames_signal = BREAK_sig;
bye_bye(NULL);
(void)dont_care_sig;
} // end: sig_endpgm
/*
* Catches:
* SIGTSTP, SIGTTIN and SIGTTOU */
static void sig_paused (int dont_care_sig) {
// POSIX.1-2004 async-signal-safe: tcsetattr, tcdrain, raise
if (-1 == tcsetattr(STDIN_FILENO, TCSAFLUSH, &Tty_original))
error_exit(fmtmk(N_fmt(FAIL_tty_set_fmt), strerror(errno)));
if (keypad_local) putp(keypad_local);
putp(tg2(0, Screen_rows));
putp(Cap_curs_norm);
#ifndef RMAN_IGNORED
putp(Cap_smam);
#endif
// tcdrain(STDOUT_FILENO) was not reliable prior to ncurses-5.9.20121017,
// so we'll risk POSIX's wrath with good ol' fflush, lest 'Stopped' gets
// co-mingled with our most recent output...
fflush(stdout);
raise(SIGSTOP);
// later, after SIGCONT...
if (-1 == tcsetattr(STDIN_FILENO, TCSAFLUSH, &Tty_raw))
error_exit(fmtmk(N_fmt(FAIL_tty_set_fmt), strerror(errno)));
#ifndef RMAN_IGNORED
putp(Cap_rmam);
#endif
if (keypad_xmit) putp(keypad_xmit);
putp(Cursor_state);
Frames_signal = BREAK_sig;
(void)dont_care_sig;
} // end: sig_paused
/*
* Catches:
* SIGCONT and SIGWINCH */
static void sig_resize (int dont_care_sig) {
// POSIX.1-2004 async-signal-safe: tcdrain
tcdrain(STDOUT_FILENO);
Frames_signal = BREAK_sig;
(void)dont_care_sig;
} // end: sig_resize
/*###### Misc Color/Display support ####################################*/
/*
* Make the appropriate caps/color strings for a window/field group.
* note: we avoid the use of background color so as to maximize
* compatibility with the user's xterm settings */
static void capsmk (WIN_t *q) {
/* macro to test if a basic (non-color) capability is valid
thanks: Floyd Davidson <floyd@ptialaska.net> */
#define tIF(s) s ? s : ""
static int capsdone = 0;
// we must NOT disturb our 'empty' terminfo strings!
if (Batch) return;
// these are the unchangeable puppies, so we only do 'em once
if (!capsdone) {
STRLCPY(Cap_clr_eol, tIF(clr_eol))
STRLCPY(Cap_clr_eos, tIF(clr_eos))
STRLCPY(Cap_clr_scr, tIF(clear_screen))
// due to the leading newline, the following must be used with care
snprintf(Cap_nl_clreos, sizeof(Cap_nl_clreos), "\n%s", tIF(clr_eos));
STRLCPY(Cap_curs_huge, tIF(cursor_visible))
STRLCPY(Cap_curs_norm, tIF(cursor_normal))
STRLCPY(Cap_curs_hide, tIF(cursor_invisible))
STRLCPY(Cap_home, tIF(cursor_home))
STRLCPY(Cap_norm, tIF(exit_attribute_mode))
STRLCPY(Cap_reverse, tIF(enter_reverse_mode))
#ifndef RMAN_IGNORED
if (!eat_newline_glitch) {
STRLCPY(Cap_rmam, tIF(exit_am_mode))
STRLCPY(Cap_smam, tIF(enter_am_mode))
if (!*Cap_rmam || !*Cap_smam) {
*Cap_rmam = '\0';
*Cap_smam = '\0';
if (auto_right_margin)
Cap_avoid_eol = 1;
}
putp(Cap_rmam);
}
#endif
snprintf(Caps_off, sizeof(Caps_off), "%s%s", Cap_norm, tIF(orig_pair));
snprintf(Caps_endline, sizeof(Caps_endline), "%s%s", Caps_off, Cap_clr_eol);
if (tgoto(cursor_address, 1, 1)) Cap_can_goto = 1;
capsdone = 1;
}
/* the key to NO run-time costs for configurable colors -- we spend a
little time with the user now setting up our terminfo strings, and
the job's done until he/she/it has a change-of-heart */
STRLCPY(q->cap_bold, CHKw(q, View_NOBOLD) ? Cap_norm : tIF(enter_bold_mode))
if (CHKw(q, Show_COLORS) && max_colors > 0) {
STRLCPY(q->capclr_sum, tparm(set_a_foreground, q->rc.summclr))
snprintf(q->capclr_msg, sizeof(q->capclr_msg), "%s%s"
, tparm(set_a_foreground, q->rc.msgsclr), Cap_reverse);
snprintf(q->capclr_pmt, sizeof(q->capclr_pmt), "%s%s"
, tparm(set_a_foreground, q->rc.msgsclr), q->cap_bold);
snprintf(q->capclr_hdr, sizeof(q->capclr_hdr), "%s%s"
, tparm(set_a_foreground, q->rc.headclr), Cap_reverse);
snprintf(q->capclr_rownorm, sizeof(q->capclr_rownorm), "%s%s"
, Caps_off, tparm(set_a_foreground, q->rc.taskclr));
} else {
q->capclr_sum[0] = '\0';
#ifdef USE_X_COLHDR
snprintf(q->capclr_msg, sizeof(q->capclr_pmt), "%s%s"
, Cap_reverse, q->cap_bold);
#else
STRLCPY(q->capclr_msg, Cap_reverse)
#endif
STRLCPY(q->capclr_pmt, q->cap_bold)
STRLCPY(q->capclr_hdr, Cap_reverse)
STRLCPY(q->capclr_rownorm, Cap_norm)
}
// composite(s), so we do 'em outside and after the if
snprintf(q->capclr_rowhigh, sizeof(q->capclr_rowhigh), "%s%s"
, q->capclr_rownorm, CHKw(q, Show_HIBOLD) ? q->cap_bold : Cap_reverse);
#undef tIF
} // end: capsmk
/*
* Show an error message (caller may include '\a' for sound) */
static void show_msg (const char *str) {
PUTT("%s%s %.*s %s%s%s"
, tg2(0, Msg_row)
, Curwin->capclr_msg
, Screen_cols - 2
, str
, Cap_curs_hide
, Caps_off
, Cap_clr_eol);
fflush(stdout);
usleep(MSG_USLEEP);
} // end: show_msg
/*
* Show an input prompt + larger cursor (if possible) */
static int show_pmt (const char *str) {
int rc;
PUTT("%s%s%.*s %s%s%s"
, tg2(0, Msg_row)
, Curwin->capclr_pmt
, Screen_cols - 2
, str
, Cap_curs_huge
, Caps_off
, Cap_clr_eol);
fflush(stdout);
// +1 for the space we added or -1 for the cursor...
return ((rc = (int)strlen(str)+1) < Screen_cols) ? rc : Screen_cols-1;
} // end: show_pmt
/*
* Show a special coordinate message, in support of scrolling */
static inline void show_scroll (void) {
PUTT(Scroll_fmts, tg2(0, Msg_row), Frame_maxtask);
} // end: show_scroll
/*
* Show lines with specially formatted elements, but only output
* what will fit within the current screen width.
* Our special formatting consists of:
* "some text <_delimiter_> some more text <_delimiter_>...\n"
* Where <_delimiter_> is a two byte combination consisting of a
* tilde followed by an ascii digit in the the range of 1 - 8.
* examples: ~1, ~5, ~8, etc.
* The tilde is effectively stripped and the next digit
* converted to an index which is then used to select an
* 'attribute' from a capabilities table. That attribute
* is then applied to the *preceding* substring.
* Once recognized, the delimiter is replaced with a null character
* and viola, we've got a substring ready to output! Strings or
* substrings without delimiters will receive the Cap_norm attribute.
*
* Caution:
* This routine treats all non-delimiter bytes as displayable
* data subject to our screen width marching orders. If callers
* embed non-display data like tabs or terminfo strings in our
* glob, a line will truncate incorrectly at best. Worse case
* would be truncation of an embedded tty escape sequence.
*
* Tabs must always be avoided or our efforts are wasted and
* lines will wrap. To lessen but not eliminate the risk of
* terminfo string truncation, such non-display stuff should
* be placed at the beginning of a "short" line. */
static void show_special (int interact, const char *glob) {
/* note: the following is for documentation only,
the real captab is now found in a group's WIN_t !
+------------------------------------------------------+
| char *captab[] = { : Cap's/Delim's |
| Cap_norm, Cap_norm, = \000, \001, |
| cap_bold, capclr_sum, = \002, \003, |
| capclr_msg, capclr_pmt, = \004, \005, |
| capclr_hdr, = \006, |
| capclr_rowhigh, = \007, |
| capclr_rownorm }; = \010 [octal!] |
+------------------------------------------------------+ */
/* ( Pssst, after adding the termcap transitions, row may )
( exceed 300+ bytes, even in an 80x24 terminal window! )
( And if we're no longer guaranteed lines created only )
( by top, we'll need larger buffs plus some protection )
( against overrunning them with this 'lin_end - glob'. ) */
char tmp[LRGBUFSIZ], lin[LRGBUFSIZ], row[ROWMAXSIZ];
char *rp, *lin_end, *sub_beg, *sub_end;
int room;
// handle multiple lines passed in a bunch
while ((lin_end = strchr(glob, '\n'))) {
#define myMIN(a,b) (((a) < (b)) ? (a) : (b))
size_t lessor = myMIN((size_t)(lin_end - glob), sizeof(lin) -1);
// create a local copy we can extend and otherwise abuse
memcpy(lin, glob, lessor);
// zero terminate this part and prepare to parse substrings
lin[lessor] = '\0';
room = Screen_cols;
sub_beg = sub_end = lin;
*(rp = row) = '\0';
while (*sub_beg) {
int ch = *sub_end;
if ('~' == ch) ch = *(sub_end + 1) - '0';
switch (ch) {
case 0: // no end delim, captab makes normal
*(sub_end + 1) = '\0'; // extend str end, then fall through
*(sub_end + 2) = '\0'; // ( +1 optimization for usual path )
case 1: case 2: case 3: case 4:
case 5: case 6: case 7: case 8:
*sub_end = '\0';
snprintf(tmp, sizeof(tmp), "%s%.*s%s"
, Curwin->captab[ch], room, sub_beg, Caps_off);
rp = scat(rp, tmp);
room -= (sub_end - sub_beg);
sub_beg = (sub_end += 2);
break;
default: // nothin' special, just text
++sub_end;
}
if (0 >= room) break; // skip substrings that won't fit
}
if (interact) PUTT("%s%s\n", row, Cap_clr_eol);
else PUFF("%s%s\n", row, Caps_endline);
glob = ++lin_end; // point to next line (maybe)
#undef myMIN
} // end: while 'lines'
/* If there's anything left in the glob (by virtue of no trailing '\n'),
it probably means caller wants to retain cursor position on this final
line. That, in turn, means we're interactive and so we'll just do our
'fit-to-screen' thingy while also leaving room for the cursor... */
if (*glob) PUTT("%.*s", Screen_cols -1, glob);
} // end: show_special
/*
* Create a nearly complete scroll coordinates message, but still
* a format string since we'll be missing a tgoto and total tasks. */
static void updt_scroll_msg (void) {
char tmp1[SMLBUFSIZ], tmp2[SMLBUFSIZ];
int totpflgs = Curwin->totpflgs;
int begpflgs = Curwin->begpflg + 1;
#ifndef USE_X_COLHDR
if (CHKw(Curwin, Show_HICOLS)) {
totpflgs -= 2;
if (ENUpos(Curwin, Curwin->rc.sortindx) < Curwin->begpflg) begpflgs -= 2;
}
#endif
if (1 > totpflgs) totpflgs = 1;
if (1 > begpflgs) begpflgs = 1;
snprintf(tmp1, sizeof(tmp1)
, N_fmt(SCROLL_coord_fmt), Curwin->begtask + 1, begpflgs, totpflgs);
strcpy(tmp2, tmp1);
#ifndef SCROLLVAR_NO
if (Curwin->varcolbeg)
snprintf(tmp2, sizeof(tmp2), "%s + %d", tmp1, Curwin->varcolbeg);
#endif
snprintf(Scroll_fmts, sizeof(Scroll_fmts)
, "%%s%s %.*s%s", Caps_off, Screen_cols - 3, tmp2, Cap_clr_eol);
} // end: updt_scroll_msg
/*###### Low Level Memory/Keyboard/File I/O support ####################*/
/*
* Handle our own memory stuff without the risk of leaving the
* user's terminal in an ugly state should things go sour. */
static void *alloc_c (size_t num) MALLOC;
static void *alloc_c (size_t num) {
void *pv;
if (!num) ++num;
if (!(pv = calloc(1, num)))
error_exit(N_txt(FAIL_alloc_c_txt));
return pv;
} // end: alloc_c
static void *alloc_r (void *ptr, size_t num) MALLOC;
static void *alloc_r (void *ptr, size_t num) {
void *pv;
if (!num) ++num;
if (!(pv = realloc(ptr, num)))
error_exit(N_txt(FAIL_alloc_r_txt));
return pv;
} // end: alloc_r
static char *alloc_s (const char *str) MALLOC;
static char *alloc_s (const char *str) {
return strcpy(alloc_c(strlen(str) +1), str);
} // end: alloc_s
/*
* This function is used in connection with raw single byte
* unsolicited keyboard input that's susceptible to SIGWINCH
* interrupts (or any other signal). He also supports timout
* in the absence of user keystrokes or some signal interrupt. */
static inline int ioa (struct timespec *ts) {
fd_set fs;
int rc;
FD_ZERO(&fs);
FD_SET(STDIN_FILENO, &fs);
#ifdef SIGNALS_LESS // conditional comments are silly, but help in documenting
// hold here until we've got keyboard input, any signal except SIGWINCH
// or (optionally) we timeout with nanosecond granularity
#else
// hold here until we've got keyboard input, any signal (including SIGWINCH)
// or (optionally) we timeout with nanosecond granularity
#endif
rc = pselect(STDIN_FILENO + 1, &fs, NULL, NULL, ts, &Sigwinch_set);
if (rc < 0) rc = 0;
return rc;
} // end: ioa
/*
* This routine isolates ALL user INPUT and ensures that we
* wont be mixing I/O from stdio and low-level read() requests */
static int ioch (int ech, char *buf, unsigned cnt) {
int rc = -1;
#ifdef TERMIOS_ONLY
if (ech) {
tcsetattr(STDIN_FILENO, TCSAFLUSH, &Tty_tweaked);
rc = read(STDIN_FILENO, buf, cnt);
tcsetattr(STDIN_FILENO, TCSAFLUSH, &Tty_raw);
} else {
if (ioa(NULL))
rc = read(STDIN_FILENO, buf, cnt);
}
#else
(void)ech;
if (ioa(NULL))
rc = read(STDIN_FILENO, buf, cnt);
#endif
// zero means EOF, might happen if we erroneously get detached from terminal
if (0 == rc) bye_bye(NULL);
// it may have been the beginning of a lengthy escape sequence
tcflush(STDIN_FILENO, TCIFLUSH);
// note: we do NOT produce a vaid 'string'
return rc;
} // end: ioch
/*
* Support for single or multiple keystroke input AND
* escaped cursor motion keys.
* note: we support more keys than we currently need, in case
* we attract new consumers in the future */
static int iokey (int action) {
static char buf12[CAPBUFSIZ], buf13[CAPBUFSIZ]
, buf14[CAPBUFSIZ], buf15[CAPBUFSIZ];
static struct {
const char *str;
int key;
} tinfo_tab[] = {
{ "\033\n",kbd_ENTER }, { NULL, kbd_UP }, { NULL, kbd_DOWN },
{ NULL, kbd_LEFT }, { NULL, kbd_RIGHT }, { NULL, kbd_PGUP },
{ NULL, kbd_PGDN }, { NULL, kbd_HOME }, { NULL, kbd_END },
{ NULL, kbd_BKSP }, { NULL, kbd_INS }, { NULL, kbd_DEL },
// next 4 destined to be meta + arrow keys...
{ buf12, kbd_PGUP }, { buf13, kbd_PGDN },
{ buf14, kbd_HOME }, { buf15, kbd_END },
// remainder are alternatives for above, just in case...
// ( the k,j,l,h entries are the vim cursor motion keys )
{ "\033\\", kbd_UP }, { "\033/", kbd_DOWN }, /* meta+ \,/ */
{ "\033<", kbd_LEFT }, { "\033>", kbd_RIGHT }, /* meta+ <,> */
{ "\033k", kbd_UP }, { "\033j", kbd_DOWN }, /* meta+ k,j */
{ "\033h", kbd_LEFT }, { "\033l", kbd_RIGHT }, /* meta+ h,l */
{ "\033\013", kbd_PGUP }, { "\033\012", kbd_PGDN }, /* ctrl+meta+ k,j */
{ "\033\010", kbd_HOME }, { "\033\014", kbd_END } /* ctrl+meta+ h,l */
};
#ifdef TERMIOS_ONLY
char buf[SMLBUFSIZ], *pb;
#else
static char buf[SMLBUFSIZ];
static int pos, len;
char *pb;
#endif
int i;
if (action == 0) {
#define tOk(s) s ? s : ""
tinfo_tab[1].str = tOk(key_up);
tinfo_tab[2].str = tOk(key_down);
tinfo_tab[3].str = tOk(key_left);
tinfo_tab[4].str = tOk(key_right);
tinfo_tab[5].str = tOk(key_ppage);
tinfo_tab[6].str = tOk(key_npage);
tinfo_tab[7].str = tOk(key_home);
tinfo_tab[8].str = tOk(key_end);
tinfo_tab[9].str = tOk(key_backspace);
tinfo_tab[10].str = tOk(key_ic);
tinfo_tab[11].str = tOk(key_dc);
STRLCPY(buf12, fmtmk("\033%s", tOk(key_up)));
STRLCPY(buf13, fmtmk("\033%s", tOk(key_down)));
STRLCPY(buf14, fmtmk("\033%s", tOk(key_left)));
STRLCPY(buf15, fmtmk("\033%s", tOk(key_right)));
// next is critical so returned results match bound terminfo keys
putp(tOk(keypad_xmit));
// ( converse keypad_local issued at pause/pgm end, just in case )
return 0;
#undef tOk
}
if (action == 1) {
memset(buf, '\0', sizeof(buf));
if (1 > ioch(0, buf, sizeof(buf)-1)) return 0;
}
#ifndef TERMIOS_ONLY
if (action == 2) {
if (pos < len)
return buf[pos++]; // exhaust prior keystrokes
pos = len = 0;
memset(buf, '\0', sizeof(buf));
if (1 > ioch(0, buf, sizeof(buf)-1)) return 0;
if (isprint(buf[0])) { // no need for translation
len = strlen(buf);
pos = 1;
return buf[0];
}
}
#endif
/* some emulators implement 'key repeat' too well and we get duplicate
key sequences -- so we'll focus on the last escaped sequence, while
also allowing use of the meta key... */
if (!(pb = strrchr(buf, '\033'))) pb = buf;
else if (pb > buf && '\033' == *(pb - 1)) --pb;
for (i = 0; i < MAXTBL(tinfo_tab); i++)
if (!strcmp(tinfo_tab[i].str, pb))
return tinfo_tab[i].key;
// no match, so we'll return single non-escaped keystrokes only
if (buf[0] == '\033' && buf[1]) return 0;
return buf[0];
} // end: iokey
#ifdef TERMIOS_ONLY
/*
* Get line oriented interactive input from the user,
* using native tty support */
static char *ioline (const char *prompt) {
static const char ws[] = "\b\f\n\r\t\v\x1b\x9b"; // 0x1b + 0x9b are escape
static char buf[MEDBUFSIZ];
char *p;
show_pmt(prompt);
memset(buf, '\0', sizeof(buf));
ioch(1, buf, sizeof(buf)-1);
if ((p = strpbrk(buf, ws))) *p = '\0';
// note: we DO produce a vaid 'string'
return buf;
} // end: ioline
#else
/*
* Get line oriented interactive input from the user,
* going way beyond native tty support by providing:
* . true line editing, not just destructive backspace
* . an input limit sensitive to current screen dimensions
* . ability to recall prior strings for re-input/re-editing */
static char *ioline (const char *prompt) {
#define savMAX 50
// thank goodness memmove allows the two strings to overlap
#define sqzSTR { memmove(&buf[pos], &buf[pos+1], bufMAX-pos); \
buf[sizeof(buf)-1] = '\0'; }
#define expSTR if (len+1 < bufMAX && len+beg+1 < Screen_cols) { \
memmove(&buf[pos+1], &buf[pos], bufMAX-pos); buf[pos] = ' '; }
#define logCOL (pos+1)
#define phyCOL (beg+pos+1)
#define bufMAX ((int)sizeof(buf)-2) // -1 for '\0' string delimeter
static char buf[MEDBUFSIZ+1]; // +1 for '\0' string delimeter
static int ovt;
int beg, pos, len, key, i;
struct lin_s {
struct lin_s *bkw; // ptr to older saved strs
struct lin_s *fwd; // ptr to newer saved strs
char *str; // the saved string
};
static struct lin_s *anchor, *plin;
if (!anchor) {
anchor = alloc_c(sizeof(struct lin_s));
anchor->str = alloc_s(""); // top-of-stack == empty str
}
plin = anchor;
pos = 0;
beg = show_pmt(prompt);
memset(buf, '\0', sizeof(buf));
putp(ovt ? Cap_curs_huge : Cap_curs_norm);
do {
fflush(stdout);
len = strlen(buf);
key = iokey(2);
switch (key) {
case 0:
case kbd_ESC:
buf[0] = '\0'; // fall through !
case kbd_ENTER:
continue;
case kbd_INS:
ovt = !ovt;
putp(ovt ? Cap_curs_huge : Cap_curs_norm);
break;
case kbd_DEL:
sqzSTR
break;
case kbd_BKSP :
if (0 < pos) { --pos; sqzSTR }
break;
case kbd_LEFT:
if (0 < pos) --pos;
break;
case kbd_RIGHT:
if (pos < len) ++pos;
break;
case kbd_HOME:
pos = 0;
break;
case kbd_END:
pos = len;
break;
case kbd_UP:
if (plin->bkw) {
plin = plin->bkw;
memset(buf, '\0', sizeof(buf));
pos = snprintf(buf, sizeof(buf), "%s", plin->str);
}
break;
case kbd_DOWN:
memset(buf, '\0', sizeof(buf));
if (plin->fwd) plin = plin->fwd;
pos = snprintf(buf, sizeof(buf), "%s", plin->str);
break;
default: // what we REALLY wanted (maybe)
if (isprint(key) && logCOL < bufMAX && phyCOL < Screen_cols) {
if (!ovt) expSTR
buf[pos++] = key;
}
break;
}
putp(fmtmk("%s%s%s", tg2(beg, Msg_row), Cap_clr_eol, buf));
putp(tg2(beg+pos, Msg_row));
} while (key && key != kbd_ENTER && key != kbd_ESC);
// weed out duplicates, including empty strings (top-of-stack)...
for (i = 0, plin = anchor; ; i++) {
#ifdef RECALL_FIXED
if (!STRCMP(plin->str, buf)) // if matched, retain original order
return buf;
#else
if (!STRCMP(plin->str, buf)) { // if matched, rearrange stack order
if (i > 1) { // but not null str or if already #2
if (plin->bkw) // splice around this matched string
plin->bkw->fwd = plin->fwd; // if older exists link to newer
plin->fwd->bkw = plin->bkw; // newer linked to older or NULL
anchor->bkw->fwd = plin; // stick matched on top of former #2
plin->bkw = anchor->bkw; // keep empty string at top-of-stack
plin->fwd = anchor; // then prepare to be the 2nd banana
anchor->bkw = plin; // by sliding us in below the anchor
}
return buf;
}
#endif
if (!plin->bkw) break; // let i equal total stacked strings
plin = plin->bkw; // ( with plin representing bottom )
}
if (i < savMAX)
plin = alloc_c(sizeof(struct lin_s));
else { // when a new string causes overflow
plin->fwd->bkw = NULL; // make next-to-last string new last
free(plin->str); // and toss copy but keep the struct
}
plin->str = alloc_s(buf); // copy user's new unique input line
plin->bkw = anchor->bkw; // keep empty string as top-of-stack
if (plin->bkw) // did we have some already stacked?
plin->bkw->fwd = plin; // yep, so point prior to new string
plin->fwd = anchor; // and prepare to be a second banana
anchor->bkw = plin; // by sliding it in as new number 2!
return buf; // protect our copy, return original
#undef savMAX
#undef sqzSTR
#undef expSTR
#undef logCOL
#undef phyCOL
#undef bufMAX
} // end: ioline
#endif
/*
* This routine provides the i/o in support of files whose size
* cannot be determined in advance. Given a stream pointer, he'll
* try to slurp in the whole thing and return a dynamically acquired
* buffer supporting that single string glob.
*
* He always creates a buffer at least READMINSZ big, possibly
* all zeros (an empty string), even if the file wasn't read. */
static int readfile (FILE *fp, char **baddr, size_t *bsize, size_t *bread) {
char chunk[4096*16];
size_t num;
*bread = 0;
*bsize = READMINSZ;
*baddr = alloc_c(READMINSZ);
if (fp) {
while (0 < (num = fread(chunk, 1, sizeof(chunk), fp))) {
*baddr = alloc_r(*baddr, num + *bsize);
memcpy(*baddr + *bread, chunk, num);
*bread += num;
*bsize += num;
};
*(*baddr + *bread) = '\0';
return ferror(fp);
}
return ENOENT;
} // end: readfile
/*###### Small Utility routines ########################################*/
/*
* Get a float from the user */
static float get_float (const char *prompt) {
char *line;
float f;
line = ioline(prompt);
if (!line[0] || Frames_signal) return -1.0;
// note: we're not allowing negative floats
if (strcspn(line, "+,.0123456789")) {
show_msg(N_txt(BAD_numfloat_txt));
return -1.0;
}
sscanf(line, "%f", &f);
return f;
} // end: get_float
#define GET_INT_BAD INT_MIN
#define GET_INTNONE (INT_MIN + 1)
/*
* Get an integer from the user, returning INT_MIN for error */
static int get_int (const char *prompt) {
char *line;
int n;
line = ioline(prompt);
if (Frames_signal) return GET_INT_BAD;
if (!line[0]) return GET_INTNONE;
// note: we've got to allow negative ints (renice)
if (strcspn(line, "-+0123456789")) {
show_msg(N_txt(BAD_integers_txt));
return GET_INT_BAD;
}
sscanf(line, "%d", &n);
return n;
} // end: get_int
/*
* Make a hex value, and maybe suppress zeroes. */
static inline const char *hex_make (KLONG num, int noz) {
static char buf[SMLBUFSIZ];
int i;
#ifdef CASEUP_HEXES
snprintf(buf, sizeof(buf), "%08" KLF "X", num);
#else
snprintf(buf, sizeof(buf), "%08" KLF "x", num);
#endif
if (noz)
for (i = 0; buf[i]; i++)
if ('0' == buf[i])
buf[i] = '.';
return buf;
} // end: hex_make
/*
* This sructure is hung from a WIN_t when other filtering is active */
struct osel_s {
struct osel_s *nxt; // the next criteria or NULL.
int (*rel)(const char *, const char *); // relational strings compare
char *(*sel)(const char *, const char *); // for selection str compares
char *raw; // raw user input (dup check)
char *val; // value included or excluded
int ops; // filter delimiter/operation
int inc; // include == 1, exclude == 0
int enu; // field (procflag) to filter
};
/*
* A function to turn off entire other filtering in the given window */
static void osel_clear (WIN_t *q) {
struct osel_s *osel = q->osel_1st;
while (osel) {
struct osel_s *nxt = osel->nxt;
free(osel->val);
free(osel->raw);
free(osel);
osel = nxt;
}
q->osel_tot = 0;
q->osel_1st = NULL;
free (q->osel_prt);
q->osel_prt = NULL;
#ifndef USE_X_COLHDR
OFFw(Curwin, NOHISEL_xxx);
#endif
} // end: osel_clear
/*
* Determine if there is a matching value or releationship among the
* other criteria in this passed window -- it's called from only one
* place, and likely inlined even without the directive */
static inline int osel_matched (const WIN_t *q, FLG_t enu, const char *str) {
struct osel_s *osel = q->osel_1st;
while (osel) {
if (osel->enu == enu) {
int r;
switch (osel->ops) {
case '<': // '<' needs the r < 0 unless
r = osel->rel(str, osel->val); // '!' which needs an inverse
if ((r >= 0 && osel->inc) || (r < 0 && !osel->inc)) return 0;
break;
case '>': // '>' needs the r > 0 unless
r = osel->rel(str, osel->val); // '!' which needs an inverse
if ((r <= 0 && osel->inc) || (r > 0 && !osel->inc)) return 0;
break;
default:
{ char *p = osel->sel(str, osel->val);
if ((!p && osel->inc) || (p && !osel->inc)) return 0;
}
break;
}
}
osel = osel->nxt;
}
return 1;
} // end: osel_matched
/*
* Validate the passed string as a user name or number,
* and/or update the window's 'u/U' selection stuff. */
static const char *user_certify (WIN_t *q, const char *str, char typ) {
struct passwd *pwd;
char *endp;
uid_t num;
q->usrseltyp = 0;
q->usrselflg = 1;
Monpidsidx = 0;
if (*str) {
if ('!' == *str) { ++str; q->usrselflg = 0; }
num = (uid_t)strtoul(str, &endp, 0);
if ('\0' == *endp) {
pwd = getpwuid(num);
if (!pwd) {
/* allow foreign users, from e.g within chroot
( thanks Dr. Werner Fink <werner@suse.de> ) */
q->usrseluid = num;
q->usrseltyp = typ;
return NULL;
}
} else
pwd = getpwnam(str);
if (!pwd) return N_txt(BAD_username_txt);
q->usrseluid = pwd->pw_uid;
q->usrseltyp = typ;
}
return NULL;
} // end: user_certify
/*
* Determine if this proc_t matches the 'u/U' selection criteria
* for a given window -- it's called from only one place, and
* likely inlined even without the directive */
static inline int user_matched (const WIN_t *q, const proc_t *p) {
switch(q->usrseltyp) {
case 0: // uid selection inactive
return 1;
case 'U': // match any uid
if (p->ruid == q->usrseluid) return q->usrselflg;
if (p->suid == q->usrseluid) return q->usrselflg;
if (p->fuid == q->usrseluid) return q->usrselflg;
// fall through...
case 'u': // match effective uid
if (p->euid == q->usrseluid) return q->usrselflg;
// fall through...
default: // no match...
;
}
return !q->usrselflg;
} // end: user_matched
/*###### Basic Formatting support ######################################*/
/*
* Just do some justify stuff, then add post column padding. */
static inline const char *justify_pad (const char *str, int width, int justr) {
static char l_fmt[] = "%-*.*s%s", r_fmt[] = "%*.*s%s";
static char buf[SCREENMAX];
snprintf(buf, sizeof(buf), justr ? r_fmt : l_fmt, width, width, str, COLPADSTR);
return buf;
} // end: justify_pad
/*
* Make and then justify a single character. */
static inline const char *make_chr (const char ch, int width, int justr) {
static char buf[SMLBUFSIZ];
snprintf(buf, sizeof(buf), "%c", ch);
return justify_pad(buf, width, justr);
} // end: make_chr
/*
* Make and then justify an integer NOT subject to scaling,
* and include a visual clue should tuncation be necessary. */
static inline const char *make_num (long num, int width, int justr, int col) {
static char buf[SMLBUFSIZ];
if (width < snprintf(buf, sizeof(buf), "%ld", num)) {
buf[width-1] = COLPLUSCH;
AUTOX_COL(col);
}
return justify_pad(buf, width, justr);
} // end: make_num
/*
* Make and then justify a character string,
* and include a visual clue should tuncation be necessary. */
static inline const char *make_str (const char *str, int width, int justr, int col) {
static char buf[SCREENMAX];
if (width < snprintf(buf, sizeof(buf), "%s", str)) {
buf[width-1] = COLPLUSCH;
AUTOX_COL(col);
}
return justify_pad(buf, width, justr);
} // end: make_str
/*
* Do some scaling then justify stuff.
* We'll interpret 'num' as a kibibytes quantity and try to
* format it to reach 'target' while also fitting 'width'. */
static const char *scale_mem (int target, unsigned long num, int width, int justr) {
#ifndef NOBOOST_MEMS
// SK_Kb SK_Mb SK_Gb SK_Tb SK_Pb SK_Eb
static const char *fmttab[] = { "%.0f", "%#.1f%c", "%#.3f%c", "%#.3f%c", "%#.3f%c", NULL };
#else
static const char *fmttab[] = { "%.0f", "%.0f%c", "%.0f%c", "%.0f%c", "%.0f%c", NULL };
#endif
static char buf[SMLBUFSIZ];
float scaled_num;
char *psfx;
int i;
buf[0] = '\0';
if (Rc.zero_suppress && 0 >= num)
goto end_justifies;
scaled_num = num;
for (i = SK_Kb, psfx = Scaled_sfxtab; i < SK_Eb; psfx++, i++) {
if (i >= target
&& (width >= snprintf(buf, sizeof(buf), fmttab[i], scaled_num, *psfx)))
goto end_justifies;
scaled_num /= 1024.0;
}
// well shoot, this outta' fit...
snprintf(buf, sizeof(buf), "?");
end_justifies:
return justify_pad(buf, width, justr);
} // end: scale_mem
/*
* Do some scaling then justify stuff. */
static const char *scale_num (unsigned long num, int width, int justr) {
static char buf[SMLBUFSIZ];
float scaled_num;
char *psfx;
buf[0] = '\0';
if (Rc.zero_suppress && 0 >= num)
goto end_justifies;
if (width >= snprintf(buf, sizeof(buf), "%lu", num))
goto end_justifies;
scaled_num = num;
for (psfx = Scaled_sfxtab; 0 < *psfx; psfx++) {
scaled_num /= 1024.0;
if (width >= snprintf(buf, sizeof(buf), "%.1f%c", scaled_num, *psfx))
goto end_justifies;
if (width >= snprintf(buf, sizeof(buf), "%.0f%c", scaled_num, *psfx))
goto end_justifies;
}
// well shoot, this outta' fit...
snprintf(buf, sizeof(buf), "?");
end_justifies:
return justify_pad(buf, width, justr);
} // end: scale_num
/*
* Make and then justify a percentage, with decreasing precision. */
static const char *scale_pcnt (float num, int width, int justr) {
static char buf[SMLBUFSIZ];
buf[0] = '\0';
if (Rc.zero_suppress && 0 >= num)
goto end_justifies;
#ifdef BOOST_PERCNT
if (width >= snprintf(buf, sizeof(buf), "%#.3f", num))
goto end_justifies;
if (width >= snprintf(buf, sizeof(buf), "%#.2f", num))
goto end_justifies;
#endif
if (width >= snprintf(buf, sizeof(buf), "%#.1f", num))
goto end_justifies;
if (width >= snprintf(buf, sizeof(buf), "%*.0f", width, num))
goto end_justifies;
// well shoot, this outta' fit...
snprintf(buf, sizeof(buf), "?");
end_justifies:
return justify_pad(buf, width, justr);
} // end: scale_pcnt
/*
* Do some scaling stuff.
* Format 'tics' to fit 'width', then justify it. */
static const char *scale_tics (TIC_t tics, int width, int justr) {
#ifdef CASEUP_SUFIX
#define HH "%uH" // nls_maybe
#define DD "%uD"
#define WW "%uW"
#else
#define HH "%uh" // nls_maybe
#define DD "%ud"
#define WW "%uw"
#endif
static char buf[SMLBUFSIZ];
unsigned long nt; // narrow time, for speed on 32-bit
unsigned cc; // centiseconds
unsigned nn; // multi-purpose whatever
buf[0] = '\0';
nt = (tics * 100ull) / Hertz; // up to 68 weeks of cpu time
if (Rc.zero_suppress && 0 >= nt)
goto end_justifies;
cc = nt % 100; // centiseconds past second
nt /= 100; // total seconds
nn = nt % 60; // seconds past the minute
nt /= 60; // total minutes
if (width >= snprintf(buf, sizeof(buf), "%lu:%02u.%02u", nt, nn, cc))
goto end_justifies;
if (width >= snprintf(buf, sizeof(buf), "%lu:%02u", nt, nn))
goto end_justifies;
nn = nt % 60; // minutes past the hour
nt /= 60; // total hours
if (width >= snprintf(buf, sizeof(buf), "%lu,%02u", nt, nn))
goto end_justifies;
nn = nt; // now also hours
if (width >= snprintf(buf, sizeof(buf), HH, nn))
goto end_justifies;
nn /= 24; // now days
if (width >= snprintf(buf, sizeof(buf), DD, nn))
goto end_justifies;
nn /= 7; // now weeks
if (width >= snprintf(buf, sizeof(buf), WW, nn))
goto end_justifies;
// well shoot, this outta' fit...
snprintf(buf, sizeof(buf), "?");
end_justifies:
return justify_pad(buf, width, justr);
#undef HH
#undef DD
#undef WW
} // end: scale_tics
/*###### Fields Management support #####################################*/
/* These are the Fieldstab.lflg values used here and in calibrate_fields.
(own identifiers as documentation and protection against changes) */
#define L_stat PROC_FILLSTAT
#define L_statm PROC_FILLMEM
#define L_status PROC_FILLSTATUS
#define L_CGROUP PROC_EDITCGRPCVT | PROC_FILLCGROUP
#define L_CMDLINE PROC_EDITCMDLCVT | PROC_FILLARG
#define L_ENVIRON PROC_EDITENVRCVT | PROC_FILLENV
#define L_EUSER PROC_FILLUSR
#define L_OUSER PROC_FILLSTATUS | PROC_FILLUSR
#define L_EGROUP PROC_FILLSTATUS | PROC_FILLGRP
#define L_SUPGRP PROC_FILLSTATUS | PROC_FILLSUPGRP
#define L_USED PROC_FILLSTATUS | PROC_FILLMEM
// make 'none' non-zero (used to be important to Frames_libflags)
#define L_NONE PROC_SPARE_1
// from either 'stat' or 'status' (preferred), via bits not otherwise used
#define L_EITHER PROC_SPARE_2
// for calibrate_fields and summary_show 1st pass
#define L_DEFAULT PROC_FILLSTAT
/* These are our gosh darn 'Fields' !
They MUST be kept in sync with pflags !! */
static FLD_t Fieldstab[] = {
// a temporary macro, soon to be undef'd...
#define SF(f) (QFP_t)SCB_NAME(f)
// these identifiers reflect the default column alignment but they really
// contain the WIN_t flag used to check/change justification at run-time!
#define A_right Show_JRNUMS /* toggled with upper case 'J' */
#define A_left Show_JRSTRS /* toggled with lower case 'j' */
/* .width anomalies:
a -1 width represents variable width columns
a 0 width represents columns set once at startup (see zap_fieldstab)
.lflg anomalies:
P_UED, L_NONE - natural outgrowth of 'stat()' in readproc (euid)
P_CPU, L_stat - never filled by libproc, but requires times (pcpu)
P_CMD, L_stat - may yet require L_CMDLINE in calibrate_fields (cmd/cmdline)
L_EITHER - must L_status, else L_stat == 64-bit math (__udivdi3) on 32-bit !
.width .scale .align .sort .lflg
------ ------ -------- -------- -------- */
{ 0, -1, A_right, SF(PID), L_NONE },
{ 0, -1, A_right, SF(PPD), L_EITHER },
{ 5, -1, A_right, SF(UED), L_NONE },
{ 8, -1, A_left, SF(UEN), L_EUSER },
{ 5, -1, A_right, SF(URD), L_status },
{ 8, -1, A_left, SF(URN), L_OUSER },
{ 5, -1, A_right, SF(USD), L_status },
{ 8, -1, A_left, SF(USN), L_OUSER },
{ 5, -1, A_right, SF(GID), L_NONE },
{ 8, -1, A_left, SF(GRP), L_EGROUP },
{ 0, -1, A_right, SF(PGD), L_stat },
{ 8, -1, A_left, SF(TTY), L_stat },
{ 0, -1, A_right, SF(TPG), L_stat },
{ 0, -1, A_right, SF(SID), L_stat },
{ 3, -1, A_right, SF(PRI), L_stat },
{ 3, -1, A_right, SF(NCE), L_stat },
{ 3, -1, A_right, SF(THD), L_EITHER },
{ 0, -1, A_right, SF(CPN), L_stat },
{ 0, -1, A_right, SF(CPU), L_stat },
{ 6, -1, A_right, SF(TME), L_stat },
{ 9, -1, A_right, SF(TME), L_stat }, // P_TM2 slot
#ifdef BOOST_PERCNT
{ 5, -1, A_right, SF(RES), L_statm }, // P_MEM slot
#else
{ 4, -1, A_right, SF(RES), L_statm }, // P_MEM slot
#endif
#ifndef NOBOOST_MEMS
{ 7, SK_Kb, A_right, SF(VRT), L_statm },
{ 6, SK_Kb, A_right, SF(SWP), L_status },
{ 6, SK_Kb, A_right, SF(RES), L_statm },
{ 6, SK_Kb, A_right, SF(COD), L_statm },
{ 7, SK_Kb, A_right, SF(DAT), L_statm },
{ 6, SK_Kb, A_right, SF(SHR), L_statm },
#else
{ 5, SK_Kb, A_right, SF(VRT), L_statm },
{ 4, SK_Kb, A_right, SF(SWP), L_status },
{ 4, SK_Kb, A_right, SF(RES), L_statm },
{ 4, SK_Kb, A_right, SF(COD), L_statm },
{ 5, SK_Kb, A_right, SF(DAT), L_statm },
{ 4, SK_Kb, A_right, SF(SHR), L_statm },
#endif
{ 4, -1, A_right, SF(FL1), L_stat },
{ 4, -1, A_right, SF(FL2), L_stat },
{ 4, -1, A_right, SF(DRT), L_statm },
{ 1, -1, A_right, SF(STA), L_EITHER },
{ -1, -1, A_left, SF(CMD), L_EITHER },
{ 10, -1, A_left, SF(WCH), L_stat },
{ 8, -1, A_left, SF(FLG), L_stat },
{ -1, -1, A_left, SF(CGR), L_CGROUP },
{ -1, -1, A_left, SF(SGD), L_status },
{ -1, -1, A_left, SF(SGN), L_SUPGRP },
{ 0, -1, A_right, SF(TGD), L_status },
#ifdef OOMEM_ENABLE
#define L_oom PROC_FILLOOM
{ 3, -1, A_right, SF(OOA), L_oom },
{ 8, -1, A_right, SF(OOM), L_oom },
#undef L_oom
#endif
{ -1, -1, A_left, SF(ENV), L_ENVIRON },
{ 3, -1, A_right, SF(FV1), L_stat },
{ 3, -1, A_right, SF(FV2), L_stat },
#ifndef NOBOOST_MEMS
{ 6, SK_Kb, A_right, SF(USE), L_USED }
#else
{ 4, SK_Kb, A_right, SF(USE), L_USED }
#endif
#undef SF
#undef A_left
#undef A_right
};
/*
* A calibrate_fields() *Helper* function to refresh the
* cached screen geometry and related variables */
static void adj_geometry (void) {
static size_t pseudo_max = 0;
static int w_set = 0, w_cols = 0, w_rows = 0;
struct winsize wz;
Screen_cols = columns; // <term.h>
Screen_rows = lines; // <term.h>
if (-1 != ioctl(STDOUT_FILENO, TIOCGWINSZ, &wz)
&& 0 < wz.ws_col && 0 < wz.ws_row) {
Screen_cols = wz.ws_col;
Screen_rows = wz.ws_row;
}
#ifndef RMAN_IGNORED
// be crudely tolerant of crude tty emulators
if (Cap_avoid_eol) Screen_cols--;
#endif
// we might disappoint some folks (but they'll deserve it)
if (SCREENMAX < Screen_cols) Screen_cols = SCREENMAX;
if (!w_set) {
if (Width_mode > 0) // -w with arg, we'll try to honor
w_cols = Width_mode;
else
if (Width_mode < 0) { // -w without arg, try environment
char *env_columns = getenv("COLUMNS"),
*env_lines = getenv("LINES"),
*ep;
if (env_columns && *env_columns) {
long t, tc = 0;
t = strtol(env_columns, &ep, 0);
if (!*ep && (t > 0) && (t <= 0x7fffffffL)) tc = t;
if (0 < tc) w_cols = (int)tc;
}
if (env_lines && *env_lines) {
long t, tr = 0;
t = strtol(env_lines, &ep, 0);
if (!*ep && (t > 0) && (t <= 0x7fffffffL)) tr = t;
if (0 < tr) w_rows = (int)tr;
}
if (!w_cols) w_cols = SCREENMAX;
if (w_cols && w_cols < W_MIN_COL) w_cols = W_MIN_COL;
if (w_rows && w_rows < W_MIN_ROW) w_rows = W_MIN_ROW;
}
w_set = 1;
}
/* keep our support for output optimization in sync with current reality
note: when we're in Batch mode, we don't really need a Pseudo_screen
and when not Batch, our buffer will contain 1 extra 'line' since
Msg_row is never represented -- but it's nice to have some space
between us and the great-beyond... */
if (Batch) {
if (w_cols) Screen_cols = w_cols;
Screen_rows = w_rows ? w_rows : MAXINT;
Pseudo_size = (sizeof(*Pseudo_screen) * ROWMAXSIZ);
} else {
if (w_cols && w_cols < Screen_cols) Screen_cols = w_cols;
if (w_rows && w_rows < Screen_rows) Screen_rows = w_rows;
Pseudo_size = (sizeof(*Pseudo_screen) * ROWMAXSIZ) * Screen_rows;
}
// we'll only grow our Pseudo_screen, never shrink it
if (pseudo_max < Pseudo_size) {
pseudo_max = Pseudo_size;
Pseudo_screen = alloc_r(Pseudo_screen, pseudo_max);
}
// ensure each row is repainted (just in case)
PSU_CLREOS(0);
fflush(stdout);
Frames_signal = BREAK_off;
} // end: adj_geometry
/*
* A calibrate_fields() *Helper* function to build the
* actual column headers and required library flags */
static void build_headers (void) {
FLG_t f;
char *s;
WIN_t *w = Curwin;
#ifdef EQUCOLHDRYES
int x, hdrmax = 0;
#endif
int i, needpsdb = 0;
Frames_libflags = 0;
do {
if (VIZISw(w)) {
memset((s = w->columnhdr), 0, sizeof(w->columnhdr));
if (Rc.mode_altscr) s = scat(s, fmtmk("%d", w->winnum));
for (i = 0; i < w->maxpflgs; i++) {
f = w->procflgs[i];
#ifdef USE_X_COLHDR
if (CHKw(w, Show_HICOLS) && f == w->rc.sortindx) {
s = scat(s, fmtmk("%s%s", Caps_off, w->capclr_msg));
w->hdrcaplen += strlen(Caps_off) + strlen(w->capclr_msg);
}
#else
if (P_MAXPFLGS <= f) continue;
#endif
if (P_WCH == f) needpsdb = 1;
if (P_CMD == f && CHKw(w, Show_CMDLIN)) Frames_libflags |= L_CMDLINE;
Frames_libflags |= Fieldstab[w->procflgs[i]].lflg;
s = scat(s, justify_pad(N_col(f)
, VARcol(f) ? w->varcolsz : Fieldstab[f].width
, CHKw(w, Fieldstab[f].align)));
#ifdef USE_X_COLHDR
if (CHKw(w, Show_HICOLS) && f == w->rc.sortindx) {
s = scat(s, fmtmk("%s%s", Caps_off, w->capclr_hdr));
w->hdrcaplen += strlen(Caps_off) + strlen(w->capclr_hdr);
}
#endif
}
#ifdef EQUCOLHDRYES
// prepare to even out column header lengths...
if (hdrmax + w->hdrcaplen < (x = strlen(w->columnhdr))) hdrmax = x - w->hdrcaplen;
#endif
// with forest view mode, we'll need tgid, ppid & start_time...
if (CHKw(w, Show_FOREST)) Frames_libflags |= (L_status | L_stat);
// for 'busy' only processes, we'll need pcpu (utime & stime)...
if (!CHKw(w, Show_IDLEPS)) Frames_libflags |= L_stat;
// we must also accommodate an out of view sort field...
f = w->rc.sortindx;
Frames_libflags |= Fieldstab[f].lflg;
if (P_CMD == f && CHKw(w, Show_CMDLIN)) Frames_libflags |= L_CMDLINE;
} // end: VIZISw(w)
if (Rc.mode_altscr) w = w->next;
} while (w != Curwin);
#ifdef EQUCOLHDRYES
/* now we can finally even out column header lengths
(we're assuming entire columnhdr was memset to '\0') */
if (Rc.mode_altscr && SCREENMAX > Screen_cols)
for (i = 0; i < GROUPSMAX; i++) {
w = &Winstk[i];
if (CHKw(w, Show_TASKON))
if (hdrmax + w->hdrcaplen > (x = strlen(w->columnhdr)))
memset(&w->columnhdr[x], ' ', hdrmax + w->hdrcaplen - x);
}
#endif
// do we need the kernel symbol table (and is it already open?)
if (needpsdb) {
if (-1 == No_ksyms) {
No_ksyms = 0;
if (open_psdb_message(NULL, library_err))
No_ksyms = 1;
else
PSDBopen = 1;
}
}
// finalize/touchup the libproc PROC_FILLxxx flags for current config...
if ((Frames_libflags & L_EITHER) && !(Frames_libflags & L_stat))
Frames_libflags |= L_status;
if (!Frames_libflags) Frames_libflags = L_DEFAULT;
if (Monpidsidx) Frames_libflags |= PROC_PID;
} // end: build_headers
/*
* This guy coordinates the activities surrounding the maintenance
* of each visible window's columns headers and the library flags
* required for the openproc interface. */
static void calibrate_fields (void) {
FLG_t f;
char *s;
const char *h;
WIN_t *w = Curwin;
int i, varcolcnt, len;
adj_geometry();
do {
if (VIZISw(w)) {
w->hdrcaplen = 0; // really only used with USE_X_COLHDR
// build window's pflgsall array, establish upper bounds for maxpflgs
for (i = 0, w->totpflgs = 0; i < P_MAXPFLGS; i++) {
if (FLDviz(w, i)) {
f = FLDget(w, i);
#ifdef USE_X_COLHDR
w->pflgsall[w->totpflgs++] = f;
#else
if (CHKw(w, Show_HICOLS) && f == w->rc.sortindx) {
w->pflgsall[w->totpflgs++] = X_XON;
w->pflgsall[w->totpflgs++] = f;
w->pflgsall[w->totpflgs++] = X_XOF;
} else
w->pflgsall[w->totpflgs++] = f;
#endif
}
}
/* build a preliminary columns header not to exceed screen width
while accounting for a possible leading window number */
w->varcolsz = varcolcnt = 0;
*(s = w->columnhdr) = '\0';
if (Rc.mode_altscr) s = scat(s, " ");
for (i = 0; i + w->begpflg < w->totpflgs; i++) {
f = w->pflgsall[i + w->begpflg];
w->procflgs[i] = f;
#ifndef USE_X_COLHDR
if (P_MAXPFLGS <= f) continue;
#endif
h = N_col(f);
len = (VARcol(f) ? (int)strlen(h) : Fieldstab[f].width) + COLPADSIZ;
// oops, won't fit -- we're outta here...
if (Screen_cols < ((int)(s - w->columnhdr) + len)) break;
if (VARcol(f)) { ++varcolcnt; w->varcolsz += strlen(h); }
s = scat(s, fmtmk("%*.*s", len, len, h));
}
#ifndef USE_X_COLHDR
if (X_XON == w->procflgs[i - 1]) --i;
#endif
/* establish the final maxpflgs and prepare to grow the variable column
heading(s) via varcolsz - it may be a fib if their pflags weren't
encountered, but that's ok because they won't be displayed anyway */
w->maxpflgs = i;
w->varcolsz += Screen_cols - strlen(w->columnhdr);
if (varcolcnt) w->varcolsz /= varcolcnt;
/* establish the field where all remaining fields would still
fit within screen width, including a leading window number */
*(s = w->columnhdr) = '\0';
if (Rc.mode_altscr) s = scat(s, " ");
for (i = w->totpflgs - 1; -1 < i; i--) {
f = w->pflgsall[i];
#ifndef USE_X_COLHDR
if (P_MAXPFLGS <= f) { w->endpflg = i; continue; }
#endif
h = N_col(f);
len = (VARcol(f) ? (int)strlen(h) : Fieldstab[f].width) + COLPADSIZ;
if (Screen_cols < ((int)(s - w->columnhdr) + len)) break;
s = scat(s, fmtmk("%*.*s", len, len, h));
w->endpflg = i;
}
#ifndef USE_X_COLHDR
if (X_XOF == w->pflgsall[w->endpflg]) ++w->endpflg;
#endif
} // end: if (VIZISw(w))
if (Rc.mode_altscr) w = w->next;
} while (w != Curwin);
build_headers();
if (CHKw(Curwin, View_SCROLL))
updt_scroll_msg();
} // end: calibrate_fields
/*
* Display each field represented in the current window's fieldscur
* array along with its description. Mark with bold and a leading
* asterisk those fields associated with the "on" or "active" state.
*
* Special highlighting will be accorded the "focus" field with such
* highlighting potentially extended to include the description.
*
* Below is the current Fieldstab space requirement and how
* we apportion it. The xSUFX is considered sacrificial,
* something we can reduce or do without.
* 0 1 2 3
* 12345678901234567890123456789012
* * HEADING = Longest Description!
* xPRFX ----------______________________ xSUFX
* ( xPRFX has pos 2 & 10 for 'extending' when at minimums )
*
* The first 4 screen rows are reserved for explanatory text, and
* the maximum number of columns is Screen_cols / xPRFX + 1 space
* between columns. Thus, for example, with 42 fields a tty will
* still remain useable under these extremes:
* rows columns what's
* tty top tty top displayed
* --- --- --- --- ------------------
* 46 42 10 1 xPRFX only
* 46 42 32 1 full xPRFX + xSUFX
* 6 2 231 21 xPRFX only
* 10 6 231 7 full xPRFX + xSUFX
*/
static void display_fields (int focus, int extend) {
#define mkERR { putp("\n"); putp(N_txt(XTRA_winsize_txt)); return; }
#define mxCOL ( (Screen_cols / 11) > 0 ? (Screen_cols / 11) : 1 )
#define yRSVD 4
#define xSUFX 22
#define xPRFX (10 + xadd)
#define xTOTL (xPRFX + xSUFX)
WIN_t *w = Curwin; // avoid gcc bloat with a local copy
int i; // utility int (a row, tot cols, ix)
int smax; // printable width of xSUFX
int xadd = 0; // spacing between data columns
int cmax = Screen_cols; // total data column width
int rmax = Screen_rows - yRSVD; // total useable rows
static int col_sav, row_sav;
i = (P_MAXPFLGS % mxCOL) ? 1 : 0;
if (rmax < i + (P_MAXPFLGS / mxCOL)) mkERR;
i = P_MAXPFLGS / rmax;
if (P_MAXPFLGS % rmax) ++i;
if (i > 1) { cmax /= i; xadd = 1; }
if (cmax > xTOTL) cmax = xTOTL;
smax = cmax - xPRFX;
if (smax < 0) mkERR;
/* we'll go the extra distance to avoid any potential screen flicker
which occurs under some terminal emulators (but it was our fault) */
if (col_sav != Screen_cols || row_sav != Screen_rows) {
col_sav = Screen_cols;
row_sav = Screen_rows;
putp(Cap_clr_eos);
}
fflush(stdout);
for (i = 0; i < P_MAXPFLGS; ++i) {
int b = FLDviz(w, i), x = (i / rmax) * cmax, y = (i % rmax) + yRSVD;
const char *e = (i == focus && extend) ? w->capclr_hdr : "";
FLG_t f = FLDget(w, i);
char sbuf[xSUFX+1];
// prep sacrificial suffix
snprintf(sbuf, sizeof(sbuf), "= %s", N_fld(f));
PUTT("%s%c%s%s %s%-7.7s%s%s%s %-*.*s%s"
, tg2(x, y)
, b ? '*' : ' '
, b ? w->cap_bold : Cap_norm
, e
, i == focus ? w->capclr_hdr : ""
, N_col(f)
, Cap_norm
, b ? w->cap_bold : ""
, e
, smax, smax
, sbuf
, Cap_norm);
}
putp(Caps_off);
#undef mkERR
#undef mxCOL
#undef yRSVD
#undef xSUFX
#undef xPRFX
#undef xTOTL
} // end: display_fields
/*
* Manage all fields aspects (order/toggle/sort), for all windows. */
static void fields_utility (void) {
#ifndef SCROLLVAR_NO
#define unSCRL { w->begpflg = w->varcolbeg = 0; OFFw(w, Show_HICOLS); }
#else
#define unSCRL { w->begpflg = 0; OFFw(w, Show_HICOLS); }
#endif
#define swapEM { char c; unSCRL; c = w->rc.fieldscur[i]; \
w->rc.fieldscur[i] = *p; *p = c; p = &w->rc.fieldscur[i]; }
#define spewFI { char *t; f = w->rc.sortindx; t = strchr(w->rc.fieldscur, f + FLD_OFFSET); \
if (!t) t = strchr(w->rc.fieldscur, (f + FLD_OFFSET) | 0x80); \
i = (t) ? (int)(t - w->rc.fieldscur) : 0; }
WIN_t *w = Curwin; // avoid gcc bloat with a local copy
const char *h = NULL;
char *p = NULL;
int i, key;
FLG_t f;
spewFI
signify_that:
putp(Cap_clr_scr);
adj_geometry();
do {
if (!h) h = N_col(f);
putp(Cap_home);
show_special(1, fmtmk(N_unq(FIELD_header_fmt)
, w->grpname, CHKw(w, Show_FOREST) ? N_txt(FOREST_views_txt) : h));
display_fields(i, (p != NULL));
fflush(stdout);
if (Frames_signal) goto signify_that;
key = iokey(1);
if (key < 1) goto signify_that;
switch (key) {
case kbd_UP:
if (i > 0) { --i; if (p) swapEM }
break;
case kbd_DOWN:
if (i + 1 < P_MAXPFLGS) { ++i; if (p) swapEM }
break;
case kbd_LEFT:
case kbd_ENTER:
p = NULL;
break;
case kbd_RIGHT:
p = &w->rc.fieldscur[i];
break;
case kbd_HOME:
case kbd_PGUP:
if (!p) i = 0;
break;
case kbd_END:
case kbd_PGDN:
if (!p) i = P_MAXPFLGS - 1;
break;
case kbd_SPACE:
case 'd':
if (!p) { FLDtog(w, i); unSCRL }
break;
case 's':
#ifdef TREE_NORESET
if (!p && !CHKw(w, Show_FOREST)) { w->rc.sortindx = f = FLDget(w, i); h = NULL; unSCRL }
#else
if (!p) { w->rc.sortindx = f = FLDget(w, i); h = NULL; unSCRL; OFFw(w, Show_FOREST); }
#endif
break;
case 'a':
case 'w':
Curwin = w = ('a' == key) ? w->next : w->prev;
spewFI
h = p = NULL;
break;
default: // keep gcc happy
break;
}
} while (key != 'q' && key != kbd_ESC);
#undef unSCRL
#undef swapEM
#undef spewFI
} // end: fields_utility
/*
* This routine takes care of auto sizing field widths
* if/when the user sets Rc.fixed_widest to -1. Along the
* way he reinitializes some things for the next frame. */
static inline void widths_resize (void) {
int i;
// next var may also be set by the guys that actually truncate stuff
Autox_found = 0;
for (i = 0; i < P_MAXPFLGS; i++) {
if (Autox_array[i]) {
Fieldstab[i].width++;
Autox_array[i] = 0;
Autox_found = 1;
}
}
if (Autox_found) calibrate_fields();
} // end: widths_resize
/*
* This routine exists just to consolidate most of the messin'
* around with the Fieldstab array and some related stuff. */
static void zap_fieldstab (void) {
static int once;
unsigned digits;
char buf[8];
if (!once) {
Fieldstab[P_PID].width = Fieldstab[P_PPD].width
= Fieldstab[P_PGD].width = Fieldstab[P_SID].width
= Fieldstab[P_TGD].width = Fieldstab[P_TPG].width = 5;
if (5 < (digits = get_pid_digits())) {
if (10 < digits) error_exit(N_txt(FAIL_widepid_txt));
Fieldstab[P_PID].width = Fieldstab[P_PPD].width
= Fieldstab[P_PGD].width = Fieldstab[P_SID].width
= Fieldstab[P_TGD].width = Fieldstab[P_TPG].width = digits;
}
once = 1;
}
/*** hotplug_acclimated ***/
Fieldstab[P_CPN].width = 1;
if (1 < (digits = (unsigned)snprintf(buf, sizeof(buf), "%u", (unsigned)smp_num_cpus))) {
if (5 < digits) error_exit(N_txt(FAIL_widecpu_txt));
Fieldstab[P_CPN].width = digits;
}
#ifdef BOOST_PERCNT
Cpu_pmax = 99.9;
Fieldstab[P_CPU].width = 5;
if (Rc.mode_irixps && smp_num_cpus > 1 && !Thread_mode) {
Cpu_pmax = 100.0 * smp_num_cpus;
if (smp_num_cpus > 10) {
if (Cpu_pmax > 99999.0) Cpu_pmax = 99999.0;
} else {
if (Cpu_pmax > 999.9) Cpu_pmax = 999.9;
}
}
#else
Cpu_pmax = 99.9;
Fieldstab[P_CPU].width = 4;
if (Rc.mode_irixps && smp_num_cpus > 1 && !Thread_mode) {
Cpu_pmax = 100.0 * smp_num_cpus;
if (smp_num_cpus > 10) {
if (Cpu_pmax > 99999.0) Cpu_pmax = 99999.0;
} else {
if (Cpu_pmax > 999.9) Cpu_pmax = 999.9;
}
Fieldstab[P_CPU].width = 5;
}
#endif
/* and accommodate optional wider non-scalable columns (maybe) */
if (!AUTOX_MODE) {
Fieldstab[P_UED].width = Fieldstab[P_URD].width
= Fieldstab[P_USD].width = Fieldstab[P_GID].width
= Rc.fixed_widest ? 5 + Rc.fixed_widest : 5;
Fieldstab[P_UEN].width = Fieldstab[P_URN].width
= Fieldstab[P_USN].width = Fieldstab[P_GRP].width
= Rc.fixed_widest ? 8 + Rc.fixed_widest : 8;
Fieldstab[P_TTY].width
= Rc.fixed_widest ? 8 + Rc.fixed_widest : 8;
Fieldstab[P_WCH].width
= Rc.fixed_widest ? 10 + Rc.fixed_widest : 10;
}
/* plus user selectable scaling */
Fieldstab[P_VRT].scale = Fieldstab[P_SWP].scale
= Fieldstab[P_RES].scale = Fieldstab[P_COD].scale
= Fieldstab[P_DAT].scale = Fieldstab[P_SHR].scale
= Fieldstab[P_USE].scale = Rc.task_mscale;
// lastly, ensure we've got proper column headers...
calibrate_fields();
} // end: zap_fieldstab
/*###### Library Interface #############################################*/
/*
* This guy's modeled on libproc's 'eight_cpu_numbers' function except
* we preserve all cpu data in our CPU_t array which is organized
* as follows:
* cpus[0] thru cpus[n] == tics for each separate cpu
* cpus[sumSLOT] == tics from the 1st /proc/stat line
* [ and beyond sumSLOT == tics for each cpu NUMA node ] */
static CPU_t *cpus_refresh (CPU_t *cpus) {
#define sumSLOT ( smp_num_cpus )
#define totSLOT ( 1 + smp_num_cpus + Numa_node_tot)
static FILE *fp = NULL;
static int siz, sav_slot = -1;
static char *buf;
int i, num, tot_read;
#ifndef NUMA_DISABLE
int node;
#endif
char *bp;
/*** hotplug_acclimated ***/
if (sav_slot != sumSLOT) {
sav_slot = sumSLOT;
zap_fieldstab();
if (fp) { fclose(fp); fp = NULL; }
if (cpus) { free(cpus); cpus = NULL; }
}
/* by opening this file once, we'll avoid the hit on minor page faults
(sorry Linux, but you'll have to close it for us) */
if (!fp) {
if (!(fp = fopen("/proc/stat", "r")))
error_exit(fmtmk(N_fmt(FAIL_statopn_fmt), strerror(errno)));
/* note: we allocate one more CPU_t via totSLOT than 'cpus' so that a
slot can hold tics representing the /proc/stat cpu summary */
cpus = alloc_c(totSLOT * sizeof(CPU_t));
}
rewind(fp);
fflush(fp);
#define buffGRW 1024
/* we slurp in the entire directory thus avoiding repeated calls to fgets,
especially in a massively parallel environment. additionally, each cpu
line is then frozen in time rather than changing until we get around to
accessing it. this helps to minimize (not eliminate) most distortions. */
tot_read = 0;
if (buf) buf[0] = '\0';
else buf = alloc_c((siz = buffGRW));
while (0 < (num = fread(buf + tot_read, 1, (siz - tot_read), fp))) {
tot_read += num;
if (tot_read < siz) break;
buf = alloc_r(buf, (siz += buffGRW));
};
buf[tot_read] = '\0';
bp = buf;
#undef buffGRW
// remember from last time around
memcpy(&cpus[sumSLOT].sav, &cpus[sumSLOT].cur, sizeof(CT_t));
// then value the last slot with the cpu summary line
if (4 > sscanf(bp, "cpu %Lu %Lu %Lu %Lu %Lu %Lu %Lu %Lu"
, &cpus[sumSLOT].cur.u, &cpus[sumSLOT].cur.n, &cpus[sumSLOT].cur.s
, &cpus[sumSLOT].cur.i, &cpus[sumSLOT].cur.w, &cpus[sumSLOT].cur.x
, &cpus[sumSLOT].cur.y, &cpus[sumSLOT].cur.z))
error_exit(N_txt(FAIL_statget_txt));
#ifndef CPU_ZEROTICS
cpus[sumSLOT].cur.tot = cpus[sumSLOT].cur.u + cpus[sumSLOT].cur.s
+ cpus[sumSLOT].cur.n + cpus[sumSLOT].cur.i + cpus[sumSLOT].cur.w
+ cpus[sumSLOT].cur.x + cpus[sumSLOT].cur.y + cpus[sumSLOT].cur.z;
/* if a cpu has registered substantially fewer tics than those expected,
we'll force it to be treated as 'idle' so as not to present misleading
percentages. */
cpus[sumSLOT].edge =
((cpus[sumSLOT].cur.tot - cpus[sumSLOT].sav.tot) / smp_num_cpus) / (100 / TICS_EDGE);
#endif
#ifndef NUMA_DISABLE
for (i = 0; i < Numa_node_tot; i++) {
node = sumSLOT + 1 + i;
// remember from last time around
memcpy(&cpus[node].sav, &cpus[node].cur, sizeof(CT_t));
// initialize current node statistics
memset(&cpus[node].cur, 0, sizeof(CT_t));
#ifndef CPU_ZEROTICS
cpus[node].edge = cpus[sumSLOT].edge;
// this is for symmetry only, it's not currently required
cpus[node].cur.tot = cpus[sumSLOT].cur.tot;
#endif
}
#endif
// now value each separate cpu's tics...
for (i = 0; i < sumSLOT; i++) {
#ifdef PRETEND8CPUS
bp = buf;
#endif
bp = 1 + strchr(bp, '\n');
// remember from last time around
memcpy(&cpus[i].sav, &cpus[i].cur, sizeof(CT_t));
if (4 > sscanf(bp, "cpu%d %Lu %Lu %Lu %Lu %Lu %Lu %Lu %Lu", &cpus[i].id
, &cpus[i].cur.u, &cpus[i].cur.n, &cpus[i].cur.s
, &cpus[i].cur.i, &cpus[i].cur.w, &cpus[i].cur.x
, &cpus[i].cur.y, &cpus[i].cur.z)) {
memmove(&cpus[i], &cpus[sumSLOT], sizeof(CPU_t));
break; // tolerate cpus taken offline
}
#ifndef CPU_ZEROTICS
cpus[i].edge = cpus[sumSLOT].edge;
// this is for symmetry only, it's not currently required
cpus[i].cur.tot = cpus[sumSLOT].cur.tot;
#endif
#ifdef PRETEND8CPUS
cpus[i].id = i;
#endif
#ifndef NUMA_DISABLE
if (Numa_node_tot
&& -1 < (node = Numa_node_of_cpu(cpus[i].id))) {
cpus[i].node = node;
node += (sumSLOT + 1);
cpus[node].cur.u += cpus[i].cur.u;
cpus[node].cur.n += cpus[i].cur.n;
cpus[node].cur.s += cpus[i].cur.s;
cpus[node].cur.i += cpus[i].cur.i;
cpus[node].cur.w += cpus[i].cur.w;
cpus[node].cur.x += cpus[i].cur.x;
cpus[node].cur.y += cpus[i].cur.y;
cpus[node].cur.z += cpus[i].cur.z;
}
#endif
}
Cpu_faux_tot = i; // tolerate cpus taken offline
return cpus;
#undef sumSLOT
#undef totSLOT
} // end: cpus_refresh
#ifdef OFF_HST_HASH
/*
* Binary Search for HST_t's put/get support */
static inline HST_t *hstbsrch (HST_t *hst, int max, int pid) {
int mid, min = 0;
while (min <= max) {
mid = (min + max) / 2;
if (pid < hst[mid].pid) max = mid - 1;
else if (pid > hst[mid].pid) min = mid + 1;
else return &hst[mid];
}
return NULL;
} // end: hstbsrch
#else
/*
* Hashing functions for HST_t's put/get support
* (not your normal 'chaining', those damn HST_t's might move!) */
#define _HASH_(K) (K & (HHASH_SIZ - 1))
static inline HST_t *hstget (int pid) {
int V = PHash_sav[_HASH_(pid)];
while (-1 < V) {
if (PHist_sav[V].pid == pid) return &PHist_sav[V];
V = PHist_sav[V].lnk; }
return NULL;
} // end: hstget
static inline void hstput (unsigned idx) {
int V = _HASH_(PHist_new[idx].pid);
PHist_new[idx].lnk = PHash_new[V];
PHash_new[V] = idx;
} // end: hstput
#undef _HASH_
#endif
/*
* Refresh procs *Helper* function to eliminate yet one more need
* to loop through our darn proc_t table. He's responsible for:
* 1) calculating the elapsed time since the previous frame
* 2) counting the number of tasks in each state (run, sleep, etc)
* 3) maintaining the HST_t's and priming the proc_t pcpu field
* 4) establishing the total number tasks for this frame */
static void procs_hlp (proc_t *this) {
#ifdef OFF_HST_HASH
static unsigned maxt_sav = 0; // prior frame's max tasks
#endif
TIC_t tics;
HST_t *h;
if (!this) {
static struct timeval oldtimev;
struct timeval timev;
struct timezone timez;
float et;
void *v;
gettimeofday(&timev, &timez);
et = (timev.tv_sec - oldtimev.tv_sec)
+ (float)(timev.tv_usec - oldtimev.tv_usec) / 1000000.0;
oldtimev.tv_sec = timev.tv_sec;
oldtimev.tv_usec = timev.tv_usec;
// if in Solaris mode, adjust our scaling for all cpus
Frame_etscale = 100.0f / ((float)Hertz * (float)et * (Rc.mode_irixps ? 1 : smp_num_cpus));
#ifdef OFF_HST_HASH
maxt_sav = Frame_maxtask;
#endif
Frame_maxtask = Frame_running = Frame_sleepin = Frame_stopped = Frame_zombied = 0;
// prep for saving this frame's HST_t's (and reuse mem each time around)
v = PHist_sav;
PHist_sav = PHist_new;
PHist_new = v;
#ifdef OFF_HST_HASH
// prep for binary search by sorting the last frame's HST_t's
qsort(PHist_sav, maxt_sav, sizeof(HST_t), (QFP_t)sort_HST_t);
#else
v = PHash_sav;
PHash_sav = PHash_new;
PHash_new = v;
memcpy(PHash_new, HHash_nul, sizeof(HHash_nul));
#endif
return;
}
switch (this->state) {
case 'R':
Frame_running++;
break;
case 'S':
case 'D':
Frame_sleepin++;
break;
case 'T':
Frame_stopped++;
break;
case 'Z':
Frame_zombied++;
break;
default: // keep gcc happy
break;
}
if (Frame_maxtask+1 >= HHist_siz) {
HHist_siz = HHist_siz * 5 / 4 + 100;
PHist_sav = alloc_r(PHist_sav, sizeof(HST_t) * HHist_siz);
PHist_new = alloc_r(PHist_new, sizeof(HST_t) * HHist_siz);
}
/* calculate time in this process; the sum of user time (utime) and
system time (stime) -- but PLEASE dont waste time and effort on
calcs and saves that go unused, like the old top! */
PHist_new[Frame_maxtask].pid = this->tid;
PHist_new[Frame_maxtask].tics = tics = (this->utime + this->stime);
// finally, save major/minor fault counts in case the deltas are displayable
PHist_new[Frame_maxtask].maj = this->maj_flt;
PHist_new[Frame_maxtask].min = this->min_flt;
#ifdef OFF_HST_HASH
// find matching entry from previous frame and make stuff elapsed
if ((h = hstbsrch(PHist_sav, maxt_sav - 1, this->tid))) {
tics -= h->tics;
this->maj_delta = this->maj_flt - h->maj;
this->min_delta = this->min_flt - h->min;
}
#else
// hash & save for the next frame
hstput(Frame_maxtask);
// find matching entry from previous frame and make stuff elapsed
if ((h = hstget(this->tid))) {
tics -= h->tics;
this->maj_delta = this->maj_flt - h->maj;
this->min_delta = this->min_flt - h->min;
}
#endif
/* we're just saving elapsed tics, to be converted into %cpu if
this task wins it's displayable screen row lottery... */
this->pcpu = tics;
// shout this to the world with the final call (or us the next time in)
Frame_maxtask++;
} // end: procs_hlp
/*
* This guy's modeled on libproc's 'readproctab' function except
* we reuse and extend any prior proc_t's. He's been customized
* for our specific needs and to avoid the use of <stdarg.h> */
static void procs_refresh (void) {
#define n_used Frame_maxtask // maintained by procs_hlp()
static proc_t **private_ppt; // our base proc_t ptr table
static int n_alloc = 0; // size of our private_ppt
static int n_saved = 0; // last window ppt size
proc_t *ptask;
PROCTAB* PT;
int i;
proc_t*(*read_something)(PROCTAB*, proc_t*);
procs_hlp(NULL); // prep for a new frame
if (NULL == (PT = openproc(Frames_libflags, Monpids)))
error_exit(fmtmk(N_fmt(FAIL_openlib_fmt), strerror(errno)));
read_something = Thread_mode ? readeither : readproc;
for (;;) {
if (n_used == n_alloc) {
n_alloc = 10 + ((n_alloc * 5) / 4); // grow by over 25%
private_ppt = alloc_r(private_ppt, sizeof(proc_t*) * n_alloc);
// ensure NULL pointers for the additional memory just acquired
memset(private_ppt + n_used, 0, sizeof(proc_t*) * (n_alloc - n_used));
}
// on the way to n_alloc, the library will allocate the underlying
// proc_t storage whenever our private_ppt[] pointer is NULL...
if (!(ptask = read_something(PT, private_ppt[n_used]))) break;
procs_hlp((private_ppt[n_used] = ptask)); // tally this proc_t
}
closeproc(PT);
// lastly, refresh each window's proc pointers table...
if (n_saved == n_alloc)
for (i = 0; i < GROUPSMAX; i++)
memcpy(Winstk[i].ppt, private_ppt, sizeof(proc_t*) * n_used);
else {
n_saved = n_alloc;
for (i = 0; i < GROUPSMAX; i++) {
Winstk[i].ppt = alloc_r(Winstk[i].ppt, sizeof(proc_t*) * n_alloc);
memcpy(Winstk[i].ppt, private_ppt, sizeof(proc_t*) * n_used);
}
}
#undef n_used
} // end: procs_refresh
/*
* This serves as our interface to the memory & cpu count (sysinfo)
* portion of libproc. In support of those hotpluggable resources,
* the sampling frequencies are reduced so as to minimize overhead.
* We'll strive to verify the number of cpus every 5 minutes and the
* memory availability/usage every 3 seconds. */
static void sysinfo_refresh (int forced) {
static time_t mem_secs, cpu_secs;
time_t cur_secs;
if (forced)
mem_secs = cpu_secs = 0;
time(&cur_secs);
/*** hotplug_acclimated ***/
if (3 <= cur_secs - mem_secs) {
meminfo();
mem_secs = cur_secs;
}
#ifndef PRETEND8CPUS
/*** hotplug_acclimated ***/
if (300 <= cur_secs - cpu_secs) {
cpuinfo();
Cpu_faux_tot = smp_num_cpus;
cpu_secs = cur_secs;
#ifndef NUMA_DISABLE
if (Libnuma_handle)
Numa_node_tot = Numa_max_node() + 1;
#endif
}
#endif
} // end: sysinfo_refresh
/*###### Inspect Other Output ##########################################*/
/*
* HOWTO Extend the top 'inspect' functionality:
*
* To exploit the 'Y' interactive command, one must add entries to
* the top personal configuration file. Such entries simply reflect
* a file to be read or command/pipeline to be executed whose results
* will then be displayed in a separate scrollable window.
*
* Entries beginning with a '#' character are ignored, regardless of
* content. Otherwise they consist of the following 3 elements, each
* of which must be separated by a tab character (thus 2 '\t' total):
* type: literal 'file' or 'pipe'
* name: selection shown on the Inspect screen
* fmts: string representing a path or command
*
* The two types of Inspect entries are not interchangeable.
* Those designated 'file' will be accessed using fopen/fread and must
* reference a single file in the 'fmts' element. Entries specifying
* 'pipe' will employ popen/fread, their 'fmts' element could contain
* many pipelined commands and, none can be interactive.
*
* Here are some examples of both types of inspection entries.
* The first entry will be ignored due to the initial '#' character.
* For clarity, the pseudo tab depictions (^I) are surrounded by an
* extra space but the actual tabs would not be.
*
* # pipe ^I Sockets ^I lsof -n -P -i 2>&1
* pipe ^I Open Files ^I lsof -P -p %d 2>&1
* file ^I NUMA Info ^I /proc/%d/numa_maps
* pipe ^I Log ^I tail -n100 /var/log/syslog | sort -Mr
*
* Caution: If the output contains unprintable characters they will
* be displayed in either the ^I notation or hexidecimal <FF> form.
* This applies to tab characters as well. So if one wants a more
* accurate display, any tabs should be expanded within the 'fmts'.
*
* The following example takes what could have been a 'file' entry
* but employs a 'pipe' instead so as to expand the tabs.
*
* # next would have contained '\t' ...
* # file ^I <your_name> ^I /proc/%d/status
* # but this will eliminate embedded '\t' ...
* pipe ^I <your_name> ^I cat /proc/%d/status | expand -
*/
/*
* Our driving table support, the basis for generalized inspection,
* built at startup (if at all) from rcfile or demo entries. */
struct I_ent {
void (*func)(char *, int); // a pointer to file/pipe/demo function
char *type; // the type of entry ('file' or 'pipe')
char *name; // the selection label for display
char *fmts; // format string to build path or command
int farg; // 1 = '%d' in fmts, 0 = not (future use)
const char *caps; // not really caps, show_special() delim's
char *fstr; // entry's current/active search string
int flen; // above's strlen, without call overhead
};
struct I_struc {
int demo; // do NOT save table entries in rcfile
int total; // total I_ent table entries
char *raw; // all entries for 'W', incl '#' & blank
struct I_ent *tab;
};
static struct I_struc Inspect;
static char **Insp_p; // pointers to each line start
static int Insp_nl; // total lines, total Insp_p entries
static char *Insp_buf; // the results from insp_do_file/pipe
static size_t Insp_bufsz; // allocated size of Insp_buf
static size_t Insp_bufrd; // bytes actually in Insp_buf
static struct I_ent *Insp_sel; // currently selected Inspect entry
// Our 'make status line' macro
#define INSP_MKSL(big,txt) { int _sz = big ? Screen_cols : 80; \
putp(tg2(0, (Msg_row = 3))); \
PUTT("%s%.*s", Curwin->capclr_hdr, Screen_cols -1 \
, fmtmk("%-*.*s%s", _sz, _sz, txt, Cap_clr_eol)); \
putp(Caps_off); fflush(stdout); }
// Our 'row length' macro, equivalent to a strlen() call
#define INSP_RLEN(idx) (int)(Insp_p[idx +1] - Insp_p[idx] -1)
// Our 'busy' (wait please) macro
#define INSP_BUSY { INSP_MKSL(0, N_txt(YINSP_workin_txt)); }
/*
* Establish the number of lines present in the Insp_buf glob plus
* build the all important row start array. It is that array that
* others will rely on since we dare not try to use strlen() on what
* is potentially raw binary data. Who knows what some user might
* name as a file or include in a pipeline (scary, ain't it?). */
static void insp_cnt_nl (void) {
char *beg = Insp_buf;
char *cur = Insp_buf;
char *end = Insp_buf + Insp_bufrd + 1;
#ifdef INSP_SAVEBUF
{
static int n = 1;
char fn[SMLBUFSIZ];
FILE *fd;
snprintf(fn, sizeof(fn), "%s.Insp_buf.%02d.txt", Myname, n++);
fd = fopen(fn, "w");
if (fd) {
fwrite(Insp_buf, 1, Insp_bufrd, fd);
fclose(fd);
}
}
#endif
Insp_p = alloc_c(sizeof(char*) * 2);
for (Insp_nl = 0; beg < end; beg++) {
if (*beg == '\n') {
Insp_p[Insp_nl++] = cur;
// keep our array ahead of next potential need (plus the 2 above)
Insp_p = alloc_r(Insp_p, (sizeof(char*) * (Insp_nl +3)));
cur = beg +1;
}
}
Insp_p[0] = Insp_buf;
Insp_p[Insp_nl++] = cur;
Insp_p[Insp_nl] = end;
if ((end - cur) == 1) // if there's an eof null delimiter,
--Insp_nl; // don't count it as a new line
} // end: insp_cnt_nl
#ifndef INSP_OFFDEMO
/*
* The pseudo output DEMO utility. */
static void insp_do_demo (char *fmts, int pid) {
(void)fmts; (void)pid;
/* next will put us on a par with the real file/pipe read buffers
( and also avoid a harmless, but evil sounding, valgrind warning ) */
Insp_bufsz = READMINSZ + strlen(N_txt(YINSP_dstory_txt));
Insp_buf = alloc_c(Insp_bufsz);
Insp_bufrd = snprintf(Insp_buf, Insp_bufsz, "%s", N_txt(YINSP_dstory_txt));
insp_cnt_nl();
} // end: insp_do_demo
#endif
/*
* The generalized FILE utility. */
static void insp_do_file (char *fmts, int pid) {
char buf[LRGBUFSIZ];
FILE *fp;
int rc;
snprintf(buf, sizeof(buf), fmts, pid);
fp = fopen(buf, "r");
rc = readfile(fp, &Insp_buf, &Insp_bufsz, &Insp_bufrd);
if (fp) fclose(fp);
if (rc) Insp_bufrd = snprintf(Insp_buf, Insp_bufsz, "%s"
, fmtmk(N_fmt(YINSP_failed_fmt), strerror(errno)));
insp_cnt_nl();
} // end: insp_do_file
/*
* The generalized PIPE utility. */
static void insp_do_pipe (char *fmts, int pid) {
char buf[LRGBUFSIZ];
FILE *fp;
int rc;
snprintf(buf, sizeof(buf), fmts, pid);
fp = popen(buf, "r");
rc = readfile(fp, &Insp_buf, &Insp_bufsz, &Insp_bufrd);
if (fp) pclose(fp);
if (rc) Insp_bufrd = snprintf(Insp_buf, Insp_bufsz, "%s"
, fmtmk(N_fmt(YINSP_failed_fmt), strerror(errno)));
insp_cnt_nl();
} // end: insp_do_pipe
/*
* This guy is a *Helper* function serving the following two masters:
* insp_find_str() - find the next Insp_sel->fstr match
* insp_make_row() - highlight any Insp_sel->fstr matches in-view
* If Insp_sel->fstr is found in the designated row, he returns the
* offset from the start of the row, otherwise he returns a huge
* integer so traditional fencepost usage can be employed. */
static inline int insp_find_ofs (int col, int row) {
#define begFS (int)(fnd - Insp_p[row])
char *p, *fnd = NULL;
if (Insp_sel->fstr[0]) {
// skip this row, if there's no chance of a match
if (memchr(Insp_p[row], Insp_sel->fstr[0], INSP_RLEN(row))) {
for ( ; col < INSP_RLEN(row); col++) {
if (!*(p = Insp_p[row] + col)) // skip any empty strings
continue;
fnd = STRSTR(p, Insp_sel->fstr); // with binary data, each
if (fnd) // row may have '\0'. so
break; // our scans must be done
col += strlen(p); // as individual strings.
}
if (fnd && fnd < Insp_p[row + 1]) // and, we must watch out
return begFS; // for potential overrun!
}
}
return INT_MAX;
#undef begFS
} // end: insp_find_ofs
/*
* This guy supports the inspect 'L' and '&' search provisions
* and returns the row and *optimal* column for viewing any match
* ( we'll always opt for left column justification since any )
* ( preceding ctrl chars appropriate an unpredictable amount ) */
static void insp_find_str (int ch, int *col, int *row) {
#define reDUX (found) ? N_txt(WORD_another_txt) : ""
static int found;
if ((ch == '&' || ch == 'n') && !Insp_sel->fstr[0]) {
show_msg(N_txt(FIND_no_next_txt));
return;
}
if (ch == 'L' || ch == '/') {
snprintf(Insp_sel->fstr, FNDBUFSIZ, "%s", ioline(N_txt(GET_find_str_txt)));
Insp_sel->flen = strlen(Insp_sel->fstr);
found = 0;
}
if (Insp_sel->fstr[0]) {
int xx, yy;
INSP_BUSY;
for (xx = *col, yy = *row; yy < Insp_nl; ) {
xx = insp_find_ofs(xx, yy);
if (xx < INSP_RLEN(yy)) {
found = 1;
if (xx == *col && yy == *row) { // matched where we were!
++xx; // ( was the user maybe )
continue; // ( trying to fool us? )
}
*col = xx;
*row = yy;
return;
}
xx = 0;
++yy;
}
show_msg(fmtmk(N_fmt(FIND_no_find_fmt), reDUX, Insp_sel->fstr));
}
#undef reDUX
} // end: insp_find_str
/*
* This guy is a *Helper* function responsible for positioning a
* single row in the current 'X axis', then displaying the results.
* Along the way, he makes sure control characters and/or unprintable
* characters display in a less-like fashion:
* '^A' for control chars
* '<BC>' for other unprintable stuff
* Those will be highlighted with the current windows's capclr_msg,
* while visible search matches display with capclr_hdr for emphasis.
* ( we hide ugly plumbing in macros to concentrate on the algorithm ) */
static inline void insp_make_row (int col, int row) {
#define maxSZ ( Screen_cols - (to + 1) )
#define capNO { if (hicap) { putp(Caps_off); hicap = 0; } }
#define mkFND { PUTT("%s%.*s%s", Curwin->capclr_hdr, maxSZ, Insp_sel->fstr, Caps_off); \
fr += Insp_sel->flen -1; to += Insp_sel->flen; hicap = 0; }
#ifndef INSP_JUSTNOT
#define mkCTL { int x = maxSZ; const char *p = fmtmk("^%c", uch + '@'); \
PUTT("%s%.*s", (!hicap) ? Curwin->capclr_msg : "", x, p); to += 2; hicap = 1; }
#define mkUNP { int x = maxSZ; const char *p = fmtmk("<%02X>", uch); \
PUTT("%s%.*s", (!hicap) ? Curwin->capclr_msg : "", x, p); to += 4; hicap = 1; }
#else
#define mkCTL { if ((to += 2) <= Screen_cols) \
PUTT("%s^%c", (!hicap) ? Curwin->capclr_msg : "", uch + '@'); hicap = 1; }
#define mkUNP { if ((to += 4) <= Screen_cols) \
PUTT("%s<%02X>", (!hicap) ? Curwin->capclr_msg : "", uch); hicap = 1; }
#endif
#define mkSTD { capNO; if (++to <= Screen_cols) { static char _str[2]; \
_str[0] = uch; putp(_str); } }
char tline[SCREENMAX];
int fr, to, ofs;
int hicap = 0;
capNO;
if (col < INSP_RLEN(row))
memcpy(tline, Insp_p[row] + col, sizeof(tline));
else tline[0] = '\n';
for (fr = 0, to = 0, ofs = 0; to < Screen_cols -1; fr++) {
if (!ofs)
ofs = insp_find_ofs(col + fr, row);
if (col + fr < ofs) {
unsigned char uch = tline[fr];
if (uch == '\n') break; // a no show (he,he)
if (uch > 126) mkUNP // show as: '<AB>'
else if (uch < 32) mkCTL // show as: '^C'
else mkSTD // a show off (he,he)
} else { mkFND // a big show (he,he)
ofs = 0;
}
if (col + fr >= INSP_RLEN(row)) break;
}
capNO;
putp(Cap_clr_eol);
#undef maxSZ
#undef capNO
#undef mkFND
#undef mkCTL
#undef mkUNP
#undef mkSTD
} // end: insp_make_row
/*
* This guy is an insp_view_choice() *Helper* function who displays
* a page worth of of the user's damages. He also creates a status
* line based on maximum digits for the current selection's lines and
* hozizontal position (so it serves to inform, not distract, by
* otherwise being jumpy). */
static inline void insp_show_pgs (int col, int row, int max) {
char buf[SMLBUFSIZ];
int r = snprintf(buf, sizeof(buf), "%d", Insp_nl);
int c = snprintf(buf, sizeof(buf), "%d", col +Screen_cols);
int l = row +1, ls = Insp_nl;;
if (!Insp_bufrd)
l = ls = 0;
snprintf(buf, sizeof(buf), N_fmt(YINSP_status_fmt)
, Insp_sel->name
, r, l, r, ls
, c, col + 1, c, col + Screen_cols
, (unsigned long)Insp_bufrd);
INSP_MKSL(0, buf);
for ( ; max && row < Insp_nl; row++) {
putp("\n");
insp_make_row(col, row);
--max;
}
if (max)
putp(Cap_nl_clreos);
} // end: insp_show_pgs
/*
* This guy is responsible for displaying the Insp_buf contents and
* managing all scrolling/locate requests until the user gives up. */
static int insp_view_choice (proc_t *obj) {
#ifdef INSP_SLIDE_1
#define hzAMT 1
#else
#define hzAMT 8
#endif
#define maxLN (Screen_rows - (Msg_row +1))
#define makHD(b1,b2,b3) { \
snprintf(b1, sizeof(b1), "%s", make_num(obj->tid, 5, 1, AUTOX_NO)); \
snprintf(b2, sizeof(b2), "%s", make_str(obj->cmd, 8, 1, AUTOX_NO)); \
snprintf(b3, sizeof(b3), "%s", make_str(obj->euser, 8, 1, AUTOX_NO)); }
#define makFS(dst) { if (Insp_sel->flen < 22) \
snprintf(dst, sizeof(dst), "%s", Insp_sel->fstr); \
else snprintf(dst, sizeof(dst), "%.19s...", Insp_sel->fstr); }
char buf[SMLBUFSIZ];
int key, curlin = 0, curcol = 0;
signify_that:
putp(Cap_clr_scr);
adj_geometry();
for (;;) {
char pid[6], cmd[9], usr[9];
if (curcol < 0) curcol = 0;
if (curlin >= Insp_nl) curlin = Insp_nl -1;
if (curlin < 0) curlin = 0;
makFS(buf)
makHD(pid,cmd,usr)
putp(Cap_home);
show_special(1, fmtmk(N_unq(INSP_hdrview_fmt)
, pid, cmd, usr, (Insp_sel->fstr[0]) ? buf : " N/A ")); // nls_maybe
insp_show_pgs(curcol, curlin, maxLN);
fflush(stdout);
/* fflush(stdin) didn't do the trick, so we'll just dip a little deeper
lest repeated <Enter> keys produce immediate re-selection in caller */
tcflush(STDIN_FILENO, TCIFLUSH);
if (Frames_signal) goto signify_that;
key = iokey(1);
if (key < 1) goto signify_that;
switch (key) {
case kbd_ENTER: // must force new iokey()
key = INT_MAX; // fall through !
case kbd_ESC:
case 'q':
putp(Cap_clr_scr);
return key;
case kbd_LEFT:
curcol -= hzAMT;
break;
case kbd_RIGHT:
curcol += hzAMT;
break;
case kbd_UP:
--curlin;
break;
case kbd_DOWN:
++curlin;
break;
case kbd_PGUP:
case 'b':
curlin -= maxLN -1; // keep 1 line for reference
break;
case kbd_PGDN:
case kbd_SPACE:
curlin += maxLN -1; // ditto
break;
case kbd_HOME:
case 'g':
curcol = curlin = 0;
break;
case kbd_END:
case 'G':
curcol = 0;
curlin = Insp_nl - maxLN;
break;
case 'L':
case '&':
case '/':
case 'n':
insp_find_str(key, &curcol, &curlin);
// must re-hide cursor in case a prompt for a string makes it huge
putp((Cursor_state = Cap_curs_hide));
break;
case '=':
snprintf(buf, sizeof(buf), "%s: %s", Insp_sel->type, Insp_sel->fmts);
INSP_MKSL(1, buf); // show an extended SL
if (iokey(1) < 1)
goto signify_that;
break;
default: // keep gcc happy
break;
}
}
#undef hzAMT
#undef maxLN
#undef makHD
#undef makFS
} // end: insp_view_choice
/*
* This is the main Inspect routine, responsible for:
* 1) validating the passed pid (required, but not always used)
* 2) presenting/establishing the target selection
* 3) arranging to fill Insp_buf (via the Inspect.tab[?].func)
* 4) invoking insp_view_choice for viewing/scrolling/searching
* 5) cleaning up the dynamically acquired memory afterwards */
static void inspection_utility (int pid) {
#define mkSEL(dst) { for (i = 0; i < Inspect.total; i++) Inspect.tab[i].caps = "~1"; \
Inspect.tab[sel].caps = "~4"; dst[0] = '\0'; \
for (i = 0; i < Inspect.total; i++) { char _s[SMLBUFSIZ]; \
snprintf(_s, sizeof(_s), " %s %s", Inspect.tab[i].name, Inspect.tab[i].caps); \
strcat(dst, _s); } }
char sels[MEDBUFSIZ];
static int sel;
int i, key;
proc_t *p;
for (i = 0, p = NULL; i < Frame_maxtask; i++)
if (pid == Curwin->ppt[i]->tid) {
p = Curwin->ppt[i];
break;
}
if (!p) {
show_msg(fmtmk(N_fmt(YINSP_pidbad_fmt), pid));
return;
}
// must re-hide cursor since the prompt for a pid made it huge
putp((Cursor_state = Cap_curs_hide));
signify_that:
putp(Cap_clr_scr);
adj_geometry();
key = INT_MAX;
do {
mkSEL(sels);
putp(Cap_home);
show_special(1, fmtmk(N_unq(INSP_hdrsels_fmt)
, pid, p->cmd, p->euser, sels));
INSP_MKSL(0, " ");
if (Frames_signal) goto signify_that;
if (key == INT_MAX) key = iokey(1);
if (key < 1) goto signify_that;
switch (key) {
case 'q':
case kbd_ESC:
break;
case kbd_END:
sel = 0; // fall through !
case kbd_LEFT:
if (--sel < 0) sel = Inspect.total -1;
key = INT_MAX;
break;
case kbd_HOME:
sel = Inspect.total; // fall through !
case kbd_RIGHT:
if (++sel >= Inspect.total) sel = 0;
key = INT_MAX;
break;
case kbd_ENTER:
INSP_BUSY;
Insp_sel = &Inspect.tab[sel];
Inspect.tab[sel].func(Inspect.tab[sel].fmts, pid);
key = insp_view_choice(p);
free(Insp_buf);
free(Insp_p);
break;
default:
goto signify_that;
}
} while (key != 'q' && key != kbd_ESC);
#undef mkSEL
} // end: inspection_utility
#undef INSP_MKSL
#undef INSP_RLEN
#undef INSP_BUSY
/*###### Startup routines ##############################################*/
/*
* No matter what *they* say, we handle the really really BIG and
* IMPORTANT stuff upon which all those lessor functions depend! */
static void before (char *me) {
struct sigaction sa;
proc_t p;
int i;
atexit(close_stdout);
// is /proc mounted?
look_up_our_self(&p);
// setup our program name
Myname = strrchr(me, '/');
if (Myname) ++Myname; else Myname = me;
// accommodate nls/gettext potential translations
initialize_nls();
// establish cpu particulars
#ifdef PRETEND8CPUS
smp_num_cpus = 8;
#endif
Cpu_faux_tot = smp_num_cpus;
Cpu_States_fmts = N_unq(STATE_lin2x4_fmt);
if (linux_version_code > LINUX_VERSION(2, 5, 41))
Cpu_States_fmts = N_unq(STATE_lin2x5_fmt);
if (linux_version_code >= LINUX_VERSION(2, 6, 0))
Cpu_States_fmts = N_unq(STATE_lin2x6_fmt);
if (linux_version_code >= LINUX_VERSION(2, 6, 11))
Cpu_States_fmts = N_unq(STATE_lin2x7_fmt);
// get virtual page stuff
Page_size = getpagesize();
i = Page_size;
while(i > 1024) { i >>= 1; Pg2K_shft++; }
#ifndef OFF_HST_HASH
// prep for HST_t's put/get hashing optimizations
for (i = 0; i < HHASH_SIZ; i++) HHash_nul[i] = -1;
memcpy(HHash_one, HHash_nul, sizeof(HHash_nul));
memcpy(HHash_two, HHash_nul, sizeof(HHash_nul));
#endif
#ifndef NUMA_DISABLE
#if defined(PRETEND_NUMA) || defined(PRETEND8CPUS)
Numa_node_tot = Numa_max_node() + 1;
#else
Libnuma_handle = dlopen("libnuma.so.1", RTLD_LAZY);
if (Libnuma_handle) {
Numa_max_node = dlsym(Libnuma_handle, "numa_max_node");
Numa_node_of_cpu = dlsym(Libnuma_handle, "numa_node_of_cpu");
if (Numa_max_node && Numa_node_of_cpu)
Numa_node_tot = Numa_max_node() + 1;
else {
dlclose(Libnuma_handle);
Libnuma_handle = NULL;
}
}
#endif
#endif
#ifndef SIGRTMAX // not available on hurd, maybe others too
#define SIGRTMAX 32
#endif
// lastly, establish a robust signals environment
sigemptyset(&sa.sa_mask);
// with user position perserved through SIGWINCH, we must avoid SA_RESTART
sa.sa_flags = 0;
for (i = SIGRTMAX; i; i--) {
switch (i) {
case SIGALRM: case SIGHUP: case SIGINT:
case SIGPIPE: case SIGQUIT: case SIGTERM:
case SIGUSR1: case SIGUSR2:
sa.sa_handler = sig_endpgm;
break;
case SIGTSTP: case SIGTTIN: case SIGTTOU:
sa.sa_handler = sig_paused;
break;
case SIGCONT: case SIGWINCH:
sa.sa_handler = sig_resize;
break;
default:
sa.sa_handler = sig_abexit;
break;
case SIGCHLD: // we can't catch this
continue; // when opening a pipe
}
sigaction(i, &sa, NULL);
}
} // end: before
/*
* A configs_read *Helper* function responsible for converting
* a single window's old rc stuff into a new style rcfile entry */
static int config_cvt (WIN_t *q) {
static struct {
int old, new;
} flags_tab[] = {
#define old_View_NOBOLD 0x000001
#define old_VISIBLE_tsk 0x000008
#define old_Qsrt_NORMAL 0x000010
#define old_Show_HICOLS 0x000200
#define old_Show_THREAD 0x010000
{ old_View_NOBOLD, View_NOBOLD },
{ old_VISIBLE_tsk, Show_TASKON },
{ old_Qsrt_NORMAL, Qsrt_NORMAL },
{ old_Show_HICOLS, Show_HICOLS },
{ old_Show_THREAD, 0 }
#undef old_View_NOBOLD
#undef old_VISIBLE_tsk
#undef old_Qsrt_NORMAL
#undef old_Show_HICOLS
#undef old_Show_THREAD
};
static const char fields_src[] = CVT_FIELDS;
#ifdef OOMEM_ENABLE
char fields_dst[PFLAGSSIZ], *p1, *p2;
#else
char fields_dst[PFLAGSSIZ];
#endif
int i, j, x;
// first we'll touch up this window's winflags...
x = q->rc.winflags;
q->rc.winflags = 0;
for (i = 0; i < MAXTBL(flags_tab); i++) {
if (x & flags_tab[i].old) {
x &= ~flags_tab[i].old;
q->rc.winflags |= flags_tab[i].new;
}
}
q->rc.winflags |= x;
SETw(q, Show_JRNUMS);
// now let's convert old top's more limited fields...
j = strlen(q->rc.fieldscur);
if (j > CVT_FLDMAX)
return 1;
strcpy(fields_dst, fields_src);
#ifdef OOMEM_ENABLE
/* all other fields represent the 'on' state with a capitalized version
of a particular qwerty key. for the 2 additional suse out-of-memory
fields it makes perfect sense to do the exact opposite, doesn't it?
in any case, we must turn them 'off' temporarily... */
if ((p1 = strchr(q->rc.fieldscur, '['))) *p1 = '{';
if ((p2 = strchr(q->rc.fieldscur, '\\'))) *p2 = '|';
#endif
for (i = 0; i < j; i++) {
int c = q->rc.fieldscur[i];
x = tolower(c) - 'a';
if (x < 0 || x >= CVT_FLDMAX)
return 1;
fields_dst[i] = fields_src[x];
if (isupper(c))
FLDon(fields_dst[i]);
}
#ifdef OOMEM_ENABLE
// if we turned any suse only fields off, turn 'em back on OUR way...
if (p1) FLDon(fields_dst[p1 - q->rc.fieldscur]);
if (p2) FLDon(fields_dst[p2 - q->rc.fieldscur]);
#endif
strcpy(q->rc.fieldscur, fields_dst);
// lastly, we must adjust the old sort field enum...
x = q->rc.sortindx;
q->rc.sortindx = fields_src[x] - FLD_OFFSET;
Rc_questions = 1;
return 0;
} // end: config_cvt
/*
* Build the local RC file name then try to read both of 'em.
* 'SYS_RCFILESPEC' contains two lines consisting of the secure
* mode switch and an update interval. It's presence limits what
* ordinary users are allowed to do.
* 'Rc_name' contains multiple lines - 3 global + 3 per window.
* line 1 : an eyecatcher and creating program/alias name
* line 2 : an id, Mode_altcsr, Mode_irixps, Delay_time, Curwin.
* For each of the 4 windows:
* line a: contains w->winname, fieldscur
* line b: contains w->winflags, sortindx, maxtasks
* line c: contains w->summclr, msgsclr, headclr, taskclr
* line 15 : Fixed_widest, Summ_mscale, Task_mscale, Zero_suppress */
static void configs_read (void) {
float tmp_delay = DEF_DELAY;
char fbuf[LRGBUFSIZ];
const char *p;
FILE *fp;
int i;
p = getenv("HOME");
snprintf(Rc_name, sizeof(Rc_name), "%s/.%src", (p && *p) ? p : ".", Myname);
fp = fopen(SYS_RCFILESPEC, "r");
if (fp) {
fbuf[0] = '\0';
fgets(fbuf, sizeof(fbuf), fp); // sys rc file, line 1
if (strchr(fbuf, 's')) Secure_mode = 1;
fbuf[0] = '\0';
fgets(fbuf, sizeof(fbuf), fp); // sys rc file, line 2
sscanf(fbuf, "%f", &Rc.delay_time);
fclose(fp);
}
fp = fopen(Rc_name, "r");
if (fp) {
int tmp_whole, tmp_fract;
fbuf[0] = '\0';
fgets(fbuf, sizeof(fbuf), fp); // ignore eyecatcher
if (6 != fscanf(fp
, "Id:%c, Mode_altscr=%d, Mode_irixps=%d, Delay_time=%d.%d, Curwin=%d\n"
, &Rc.id, &Rc.mode_altscr, &Rc.mode_irixps, &tmp_whole, &tmp_fract, &i)) {
p = fmtmk(N_fmt(RC_bad_files_fmt), Rc_name);
Rc_questions = -1;
goto try_inspect_entries; // maybe a faulty 'inspect' echo
}
// you saw that, right? (fscanf stickin' it to 'i')
Curwin = &Winstk[i];
// this may be ugly, but it keeps us locale independent...
tmp_delay = (float)tmp_whole + (float)tmp_fract / 1000;
for (i = 0 ; i < GROUPSMAX; i++) {
int x;
WIN_t *w = &Winstk[i];
p = fmtmk(N_fmt(RC_bad_entry_fmt), i+1, Rc_name);
// note: "fieldscur=%__s" on next line should equal PFLAGSSIZ !
if (2 != fscanf(fp, "%3s\tfieldscur=%64s\n"
, w->rc.winname, w->rc.fieldscur))
goto default_or_error;
#if PFLAGSSIZ > 64
// too bad fscanf is not as flexible with his format string as snprintf
# error Hey, fix the above fscanf 'PFLAGSSIZ' dependency !
#endif
if (3 != fscanf(fp, "\twinflags=%d, sortindx=%d, maxtasks=%d\n"
, &w->rc.winflags, &w->rc.sortindx, &w->rc.maxtasks))
goto default_or_error;
if (4 != fscanf(fp, "\tsummclr=%d, msgsclr=%d, headclr=%d, taskclr=%d\n"
, &w->rc.summclr, &w->rc.msgsclr
, &w->rc.headclr, &w->rc.taskclr))
goto default_or_error;
switch (Rc.id) {
case 'f': // 3.3.0 thru 3.3.3 (procps-ng)
SETw(w, Show_JRNUMS); // fall through !
case 'g': // current RCF_VERSION_ID
default: // and future versions?
if (strlen(w->rc.fieldscur) != sizeof(DEF_FIELDS) - 1)
goto default_or_error;
for (x = 0; x < P_MAXPFLGS; ++x)
if (P_MAXPFLGS <= FLDget(w, x))
goto default_or_error;
break;
case 'a': // 3.2.8 (former procps)
if (config_cvt(w))
goto default_or_error;
break;
}
#ifndef USE_X_COLHDR
OFFw(w, NOHIFND_xxx | NOHISEL_xxx);
#endif
} // end: for (GROUPSMAX)
// any new addition(s) last, for older rcfiles compatibility...
fscanf(fp, "Fixed_widest=%d, Summ_mscale=%d, Task_mscale=%d, Zero_suppress=%d\n"
, &Rc.fixed_widest, &Rc.summ_mscale, &Rc.task_mscale, &Rc.zero_suppress);
try_inspect_entries:
// we'll start off Inspect stuff with 1 'potential' blank line
// ( only realized if we end up with Inspect.total > 0 )
for (i = 0, Inspect.raw = alloc_s("\n");;) {
#define iT(element) Inspect.tab[i].element
size_t lraw = strlen(Inspect.raw) +1;
char *s;
if (!fgets(fbuf, sizeof(fbuf), fp)) break;
lraw += strlen(fbuf) +1;
Inspect.raw = alloc_r(Inspect.raw, lraw);
strcat(Inspect.raw, fbuf);
if (fbuf[0] == '#' || fbuf[0] == '\n') continue;
Inspect.tab = alloc_r(Inspect.tab, sizeof(struct I_ent) * (i + 1));
p = fmtmk(N_fmt(YINSP_rcfile_fmt), i +1);
if (!(s = strtok(fbuf, "\t\n"))) { Rc_questions = 1; continue; }
iT(type) = alloc_s(s);
if (!(s = strtok(NULL, "\t\n"))) { Rc_questions = 1; continue; }
iT(name) = alloc_s(s);
if (!(s = strtok(NULL, "\t\n"))) { Rc_questions = 1; continue; }
iT(fmts) = alloc_s(s);
switch (toupper(fbuf[0])) {
case 'F':
iT(func) = insp_do_file;
break;
case 'P':
iT(func) = insp_do_pipe;
break;
default:
Rc_questions = 1;
continue;
}
iT(farg) = (strstr(iT(fmts), "%d")) ? 1 : 0;
iT(fstr) = alloc_c(FNDBUFSIZ);
iT(flen) = 0;
if (Rc_questions < 0) Rc_questions = 1;
++i;
#undef iT
} // end: for ('inspect' entries)
Inspect.total = i;
#ifndef INSP_OFFDEMO
if (!Inspect.total) {
#define mkS(n) N_txt(YINSP_demo ## n ## _txt)
const char *sels[] = { mkS(01), mkS(02), mkS(03) };
Inspect.total = Inspect.demo = MAXTBL(sels);
Inspect.tab = alloc_c(sizeof(struct I_ent) * Inspect.total);
for (i = 0; i < Inspect.total; i++) {
Inspect.tab[i].type = alloc_s(N_txt(YINSP_deqtyp_txt));
Inspect.tab[i].name = alloc_s(sels[i]);
Inspect.tab[i].func = insp_do_demo;
Inspect.tab[i].fmts = alloc_s(N_txt(YINSP_deqfmt_txt));
Inspect.tab[i].fstr = alloc_c(FNDBUFSIZ);
}
#undef mkS
}
#endif
if (Rc_questions < 0) {
p = fmtmk(N_fmt(RC_bad_files_fmt), Rc_name);
goto default_or_error;
}
fclose(fp);
} // end: if (fp)
// lastly, establish the true runtime secure mode and delay time
if (!getuid()) Secure_mode = 0;
if (!Secure_mode) Rc.delay_time = tmp_delay;
return;
default_or_error:
#ifdef RCFILE_NOERR
{ RCF_t rcdef = DEF_RCFILE;
fclose(fp);
Rc = rcdef;
for (i = 0 ; i < GROUPSMAX; i++)
Winstk[i].rc = Rc.win[i];
Rc_questions = 1;
}
#else
error_exit(p);
#endif
} // end: configs_read
/*
* Parse command line arguments.
* Note: it's assumed that the rc file(s) have already been read
* and our job is to see if any of those options are to be
* overridden -- we'll force some on and negate others in our
* best effort to honor the loser's (oops, user's) wishes... */
static void parse_args (char **args) {
/* differences between us and the former top:
-C (separate CPU states for SMP) is left to an rcfile
-u (user monitoring) added to compliment interactive 'u'
-p (pid monitoring) allows a comma delimited list
-q (zero delay) eliminated as redundant, incomplete and inappropriate
use: "nice -n-10 top -d0" to achieve what was only claimed
. most switches act as toggles (not 'on' sw) for more user flexibility
. no deprecated/illegal use of 'breakargv:' with goto
. bunched args are actually handled properly and none are ignored
. we tolerate NO whitespace and NO switches -- maybe too tolerant? */
static const char numbs_str[] = "+,-.0123456789";
float tmp_delay = MAXFLOAT;
char *p;
int i;
while (*args) {
const char *cp = *(args++);
while (*cp) {
char ch;
switch ((ch = *cp)) {
case '\0':
break;
case '-':
if (cp[1]) ++cp;
else if (*args) cp = *args++;
if (strspn(cp, numbs_str))
error_exit(fmtmk(N_fmt(WRONG_switch_fmt)
, cp, Myname, N_txt(USAGE_abbrev_txt)));
continue;
case 'b':
Batch = 1;
break;
case 'c':
TOGw(Curwin, Show_CMDLIN);
break;
case 'd':
if (cp[1]) ++cp;
else if (*args) cp = *args++;
else error_exit(fmtmk(N_fmt(MISSING_args_fmt), ch));
/* a negative delay will be dealt with shortly... */
if (1 != sscanf(cp, "%f", &tmp_delay))
error_exit(fmtmk(N_fmt(BAD_delayint_fmt), cp));
break;
case 'H':
Thread_mode = 1;
break;
case 'h':
case 'v':
puts(fmtmk(N_fmt(HELP_cmdline_fmt)
, procps_version, Myname, N_txt(USAGE_abbrev_txt)));
bye_bye(NULL);
case 'i':
TOGw(Curwin, Show_IDLEPS);
Curwin->rc.maxtasks = 0;
break;
case 'n':
if (cp[1]) cp++;
else if (*args) cp = *args++;
else error_exit(fmtmk(N_fmt(MISSING_args_fmt), ch));
if (1 != sscanf(cp, "%d", &Loops) || 1 > Loops)
error_exit(fmtmk(N_fmt(BAD_niterate_fmt), cp));
break;
case 'o':
if (cp[1]) cp++;
else if (*args) cp = *args++;
else error_exit(fmtmk(N_fmt(MISSING_args_fmt), ch));
if (*cp == '+') { SETw(Curwin, Qsrt_NORMAL); ++cp; }
else if (*cp == '-') { OFFw(Curwin, Qsrt_NORMAL); ++cp; }
for (i = 0; i < P_MAXPFLGS; i++)
if (!STRCMP(cp, N_col(i))) break;
if (i == P_MAXPFLGS)
error_exit(fmtmk(N_fmt(XTRA_badflds_fmt), cp));
OFFw(Curwin, Show_FOREST);
Curwin->rc.sortindx = i;
cp += strlen(cp);
break;
case 'O':
for (i = 0; i < P_MAXPFLGS; i++)
puts(N_col(i));
bye_bye(NULL);
case 'p':
if (Curwin->usrseltyp) error_exit(N_txt(SELECT_clash_txt));
do { int pid;
if (cp[1]) cp++;
else if (*args) cp = *args++;
else error_exit(fmtmk(N_fmt(MISSING_args_fmt), ch));
if (Monpidsidx >= MONPIDMAX)
error_exit(fmtmk(N_fmt(LIMIT_exceed_fmt), MONPIDMAX));
if (1 != sscanf(cp, "%d", &pid) || 0 > pid)
error_exit(fmtmk(N_fmt(BAD_mon_pids_fmt), cp));
if (!pid) pid = getpid();
for (i = 0; i < Monpidsidx; i++)
if (Monpids[i] == pid) goto next_pid;
Monpids[Monpidsidx++] = pid;
next_pid:
if (!(p = strchr(cp, ','))) break;
cp = p;
} while (*cp);
break;
case 's':
Secure_mode = 1;
break;
case 'S':
TOGw(Curwin, Show_CTIMES);
break;
case 'u':
case 'U':
{ const char *errmsg;
if (Monpidsidx || Curwin->usrseltyp) error_exit(N_txt(SELECT_clash_txt));
if (cp[1]) cp++;
else if (*args) cp = *args++;
else error_exit(fmtmk(N_fmt(MISSING_args_fmt), ch));
if ((errmsg = user_certify(Curwin, cp, ch))) error_exit(errmsg);
cp += strlen(cp);
break;
}
case 'w':
{ const char *pn = NULL;
int ai = 0, ci = 0;
Width_mode = -1;
if (cp[1]) pn = &cp[1];
else if (*args) { pn = *args; ai = 1; }
if (pn && !(ci = strspn(pn, "0123456789"))) { ai = 0; pn = NULL; }
if (pn && (1 != sscanf(pn, "%d", &Width_mode)
|| Width_mode < W_MIN_COL))
error_exit(fmtmk(N_fmt(BAD_widtharg_fmt), pn, W_MIN_COL-1));
cp++;
args += ai;
if (pn) cp = pn + ci;
continue;
}
default :
error_exit(fmtmk(N_fmt(UNKNOWN_opts_fmt)
, *cp, Myname, N_txt(USAGE_abbrev_txt)));
} // end: switch (*cp)
// advance cp and jump over any numerical args used above
if (*cp) cp += strspn(&cp[1], numbs_str) + 1;
} // end: while (*cp)
} // end: while (*args)
// fixup delay time, maybe...
if (MAXFLOAT > tmp_delay) {
if (Secure_mode)
error_exit(N_txt(DELAY_secure_txt));
if (0 > tmp_delay)
error_exit(N_txt(DELAY_badarg_txt));
Rc.delay_time = tmp_delay;
}
} // end: parse_args
/*
* Set up the terminal attributes */
static void whack_terminal (void) {
static char dummy[] = "dumb";
struct termios tmptty;
// the curses part...
if (Batch) {
setupterm(dummy, STDOUT_FILENO, NULL);
return;
}
#ifdef PRETENDNOCAP
setupterm(dummy, STDOUT_FILENO, NULL);
#else
setupterm(NULL, STDOUT_FILENO, NULL);
#endif
// our part...
if (-1 == tcgetattr(STDIN_FILENO, &Tty_original))
error_exit(N_txt(FAIL_tty_get_txt));
// ok, haven't really changed anything but we do have our snapshot
Ttychanged = 1;
// first, a consistent canonical mode for interactive line input
tmptty = Tty_original;
tmptty.c_lflag |= (ECHO | ECHOCTL | ECHOE | ICANON | ISIG);
tmptty.c_lflag &= ~NOFLSH;
tmptty.c_oflag &= ~TAB3;
tmptty.c_iflag |= BRKINT;
tmptty.c_iflag &= ~IGNBRK;
if (key_backspace && 1 == strlen(key_backspace))
tmptty.c_cc[VERASE] = *key_backspace;
#ifdef TERMIOS_ONLY
if (-1 == tcsetattr(STDIN_FILENO, TCSAFLUSH, &tmptty))
error_exit(fmtmk(N_fmt(FAIL_tty_set_fmt), strerror(errno)));
tcgetattr(STDIN_FILENO, &Tty_tweaked);
#endif
// lastly, a nearly raw mode for unsolicited single keystrokes
tmptty.c_lflag &= ~(ECHO | ECHOCTL | ECHOE | ICANON);
tmptty.c_cc[VMIN] = 1;
tmptty.c_cc[VTIME] = 0;
if (-1 == tcsetattr(STDIN_FILENO, TCSAFLUSH, &tmptty))
error_exit(fmtmk(N_fmt(FAIL_tty_set_fmt), strerror(errno)));
tcgetattr(STDIN_FILENO, &Tty_raw);
#ifndef OFF_STDIOLBF
// thanks anyway stdio, but we'll manage buffering at the frame level...
setbuffer(stdout, Stdout_buf, sizeof(Stdout_buf));
#endif
#ifdef OFF_SCROLLBK
// this has the effect of disabling any troublesome scrollback buffer...
if (enter_ca_mode) putp(enter_ca_mode);
#endif
// and don't forget to ask iokey to initialize his tinfo_tab
iokey(0);
} // end: whack_terminal
/*###### Windows/Field Groups support #################################*/
/*
* Value a window's name and make the associated group name. */
static void win_names (WIN_t *q, const char *name) {
/* note: sprintf/snprintf results are "undefined" when src==dst,
according to C99 & POSIX.1-2001 (thanks adc) */
if (q->rc.winname != name)
snprintf(q->rc.winname, sizeof(q->rc.winname), "%s", name);
snprintf(q->grpname, sizeof(q->grpname), "%d:%s", q->winnum, name);
} // end: win_names
/*
* This guy just resets (normalizes) a single window
* and he ensures pid monitoring is no longer active. */
static void win_reset (WIN_t *q) {
SETw(q, Show_IDLEPS | Show_TASKON);
#ifndef SCROLLVAR_NO
q->rc.maxtasks = q->usrseltyp = q->begpflg = q->begtask = q->varcolbeg = 0;
#else
q->rc.maxtasks = q->usrseltyp = q->begpflg = q->begtask = 0;
#endif
Monpidsidx = 0;
osel_clear(q);
} // end: win_reset
/*
* Display a window/field group (ie. make it "current"). */
static WIN_t *win_select (int ch) {
WIN_t *w = Curwin; // avoid gcc bloat with a local copy
/* if there's no ch, it means we're supporting the external interface,
so we must try to get our own darn ch by begging the user... */
if (!ch) {
show_pmt(N_txt(CHOOSE_group_txt));
if (1 > (ch = iokey(1))) return w;
}
switch (ch) {
case 'a': // we don't carry 'a' / 'w' in our
w = w->next; // pmt - they're here for a good
break; // friend of ours -- wins_colors.
case 'w': // (however those letters work via
w = w->prev; // the pmt too but gee, end-loser
break; // should just press the darn key)
case '1': case '2' : case '3': case '4':
w = &Winstk[ch - '1'];
break;
default: // keep gcc happy
break;
}
return Curwin = w;
} // end: win_select
/*
* Just warn the user when a command can't be honored. */
static int win_warn (int what) {
switch (what) {
case Warn_ALT:
show_msg(N_txt(DISABLED_cmd_txt));
break;
case Warn_VIZ:
show_msg(fmtmk(N_fmt(DISABLED_win_fmt), Curwin->grpname));
break;
default: // keep gcc happy
break;
}
/* we gotta' return false 'cause we're somewhat well known within
macro society, by way of that sassy little tertiary operator... */
return 0;
} // end: win_warn
/*
* Change colors *Helper* function to save/restore settings;
* ensure colors will show; and rebuild the terminfo strings. */
static void wins_clrhlp (WIN_t *q, int save) {
static int flgssav, summsav, msgssav, headsav, tasksav;
if (save) {
flgssav = q->rc.winflags; summsav = q->rc.summclr;
msgssav = q->rc.msgsclr; headsav = q->rc.headclr; tasksav = q->rc.taskclr;
SETw(q, Show_COLORS);
} else {
q->rc.winflags = flgssav; q->rc.summclr = summsav;
q->rc.msgsclr = msgssav; q->rc.headclr = headsav; q->rc.taskclr = tasksav;
}
capsmk(q);
} // end: wins_clrhlp
/*
* Change colors used in display */
static void wins_colors (void) {
#define kbdABORT 'q'
#define kbdAPPLY kbd_ENTER
WIN_t *w = Curwin; // avoid gcc bloat with a local copy
int clr = w->rc.taskclr, *pclr = &w->rc.taskclr;
char tgt = 'T';
int key;
if (0 >= max_colors) {
show_msg(N_txt(COLORS_nomap_txt));
return;
}
wins_clrhlp(w, 1);
putp((Cursor_state = Cap_curs_huge));
signify_that:
putp(Cap_clr_scr);
adj_geometry();
do {
putp(Cap_home);
// this string is well above ISO C89's minimum requirements!
show_special(1, fmtmk(N_unq(COLOR_custom_fmt)
, procps_version, w->grpname
, CHKw(w, View_NOBOLD) ? N_txt(ON_word_only_txt) : N_txt(OFF_one_word_txt)
, CHKw(w, Show_COLORS) ? N_txt(ON_word_only_txt) : N_txt(OFF_one_word_txt)
, CHKw(w, Show_HIBOLD) ? N_txt(ON_word_only_txt) : N_txt(OFF_one_word_txt)
, tgt, clr, w->grpname));
putp(Cap_clr_eos);
fflush(stdout);
if (Frames_signal) goto signify_that;
key = iokey(1);
if (key < 1) goto signify_that;
switch (key) {
case 'S':
pclr = &w->rc.summclr;
clr = *pclr;
tgt = key;
break;
case 'M':
pclr = &w->rc.msgsclr;
clr = *pclr;
tgt = key;
break;
case 'H':
pclr = &w->rc.headclr;
clr = *pclr;
tgt = key;
break;
case 'T':
pclr = &w->rc.taskclr;
clr = *pclr;
tgt = key;
break;
case '0': case '1': case '2': case '3':
case '4': case '5': case '6': case '7':
clr = key - '0';
*pclr = clr;
break;
case 'B':
TOGw(w, View_NOBOLD);
break;
case 'b':
TOGw(w, Show_HIBOLD);
break;
case 'z':
TOGw(w, Show_COLORS);
break;
case 'a':
case 'w':
wins_clrhlp((w = win_select(key)), 1);
clr = w->rc.taskclr, pclr = &w->rc.taskclr;
tgt = 'T';
break;
default:
break; // keep gcc happy
}
capsmk(w);
} while (key != kbdAPPLY && key != kbdABORT);
if (key == kbdABORT) wins_clrhlp(w, 0);
#undef kbdABORT
#undef kbdAPPLY
} // end: wins_colors
/*
* Manipulate flag(s) for all our windows. */
static void wins_reflag (int what, int flg) {
WIN_t *w = Curwin; // avoid gcc bloat with a local copy
do {
switch (what) {
case Flags_TOG:
TOGw(w, flg);
break;
case Flags_SET: // Ummmm, i can't find anybody
SETw(w, flg); // who uses Flags_set ...
break;
case Flags_OFF:
OFFw(w, flg);
break;
default: // keep gcc happy
break;
}
/* a flag with special significance -- user wants to rebalance
display so we gotta' off some stuff then force on two flags... */
if (EQUWINS_xxx == flg)
win_reset(w);
w = w->next;
} while (w != Curwin);
} // end: wins_reflag
/*
* Set up the raw/incomplete field group windows --
* they'll be finished off after startup completes.
* [ and very likely that will override most/all of our efforts ]
* [ --- life-is-NOT-fair --- ] */
static void wins_stage_1 (void) {
WIN_t *w;
int i;
for (i = 0; i < GROUPSMAX; i++) {
w = &Winstk[i];
w->winnum = i + 1;
w->rc = Rc.win[i];
w->captab[0] = Cap_norm;
w->captab[1] = Cap_norm;
w->captab[2] = w->cap_bold;
w->captab[3] = w->capclr_sum;
w->captab[4] = w->capclr_msg;
w->captab[5] = w->capclr_pmt;
w->captab[6] = w->capclr_hdr;
w->captab[7] = w->capclr_rowhigh;
w->captab[8] = w->capclr_rownorm;
w->next = w + 1;
w->prev = w - 1;
}
// fixup the circular chains...
Winstk[GROUPSMAX - 1].next = &Winstk[0];
Winstk[0].prev = &Winstk[GROUPSMAX - 1];
Curwin = Winstk;
} // end: wins_stage_1
/*
* This guy just completes the field group windows after the
* rcfiles have been read and command line arguments parsed.
* And since he's the cabose of startup, he'll also tidy up
* a few final things... */
static void wins_stage_2 (void) {
int i;
for (i = 0; i < GROUPSMAX; i++) {
win_names(&Winstk[i], Winstk[i].rc.winname);
capsmk(&Winstk[i]);
Winstk[i].findstr = alloc_c(FNDBUFSIZ);
Winstk[i].findlen = 0;
}
if (!Batch)
putp((Cursor_state = Cap_curs_hide));
else {
OFFw(Curwin, View_SCROLL);
signal(SIGHUP, SIG_IGN); // allow running under nohup
}
// fill in missing Fieldstab members and build each window's columnhdr
zap_fieldstab();
// lastly, initialize a signal set used to throttle one troublesome signal
sigemptyset(&Sigwinch_set);
#ifdef SIGNALS_LESS
sigaddset(&Sigwinch_set, SIGWINCH);
#endif
} // end: wins_stage_2
/*###### Interactive Input Tertiary support ############################*/
/*
* This section exists so as to offer some function naming freedom
* while also maintaining the strict alphabetical order protocol
* within each section. */
/*
* This guy is a *Helper* function serving the following two masters:
* find_string() - find the next match in a given window
* task_show() - highlight all matches currently in-view
* If q->findstr is found in the designated buffer, he returns the
* offset from the start of the buffer, otherwise he returns -1. */
static inline int find_ofs (const WIN_t *q, const char *buf) {
char *fnd;
if (q->findstr[0] && (fnd = STRSTR(buf, q->findstr)))
return (int)(fnd - buf);
return -1;
} // end: find_ofs
/* This is currently the one true prototype require by top.
It is placed here, instead of top.h, so as to avoid a compiler
warning when top_nls.c is compiled. */
static const char *task_show (const WIN_t *q, const proc_t *p);
static void find_string (int ch) {
#define reDUX (found) ? N_txt(WORD_another_txt) : ""
static int found;
int i;
if ('&' == ch && !Curwin->findstr[0]) {
show_msg(N_txt(FIND_no_next_txt));
return;
}
if ('L' == ch) {
snprintf(Curwin->findstr, FNDBUFSIZ, "%s", ioline(N_txt(GET_find_str_txt)));
Curwin->findlen = strlen(Curwin->findstr);
found = 0;
#ifndef USE_X_COLHDR
if (Curwin->findstr[0]) SETw(Curwin, NOHIFND_xxx);
else OFFw(Curwin, NOHIFND_xxx);
#endif
}
if (Curwin->findstr[0]) {
SETw(Curwin, INFINDS_xxx);
for (i = Curwin->begtask; i < Frame_maxtask; i++) {
const char *row = task_show(Curwin, Curwin->ppt[i]);
if (*row && -1 < find_ofs(Curwin, row)) {
found = 1;
if (i == Curwin->begtask) continue;
Curwin->begtask = i;
return;
}
}
show_msg(fmtmk(N_fmt(FIND_no_find_fmt), reDUX, Curwin->findstr));
}
#undef reDUX
} // end: find_string
static void help_view (void) {
WIN_t *w = Curwin; // avoid gcc bloat with a local copy
char key = 1;
putp((Cursor_state = Cap_curs_huge));
signify_that:
putp(Cap_clr_scr);
adj_geometry();
show_special(1, fmtmk(N_unq(KEYS_helpbas_fmt)
, procps_version
, w->grpname
, CHKw(w, Show_CTIMES) ? N_txt(ON_word_only_txt) : N_txt(OFF_one_word_txt)
, Rc.delay_time
, Secure_mode ? N_txt(ON_word_only_txt) : N_txt(OFF_one_word_txt)
, Secure_mode ? "" : N_unq(KEYS_helpext_fmt)));
putp(Cap_clr_eos);
fflush(stdout);
if (Frames_signal) goto signify_that;
key = iokey(1);
if (key < 1) goto signify_that;
switch (key) {
case kbd_ESC: case 'q':
break;
case '?': case 'h': case 'H':
do {
putp(Cap_home);
show_special(1, fmtmk(N_unq(WINDOWS_help_fmt)
, w->grpname
, Winstk[0].rc.winname, Winstk[1].rc.winname
, Winstk[2].rc.winname, Winstk[3].rc.winname));
putp(Cap_clr_eos);
fflush(stdout);
if (Frames_signal || (key = iokey(1)) < 1) {
adj_geometry();
putp(Cap_clr_scr);
} else w = win_select(key);
} while (key != kbd_ENTER && key != kbd_ESC);
break;
default:
goto signify_that;
}
} // end: help_view
static void other_selection (int ch) {
int (*rel)(const char *, const char *);
char *(*sel)(const char *, const char *);
char raw[MEDBUFSIZ], ops, *glob, *pval;
struct osel_s *osel;
const char *typ;
int inc, enu;
if (ch == 'o') {
typ = N_txt(OSEL_casenot_txt);
rel = strcasecmp;
sel = strcasestr;
} else {
typ = N_txt(OSEL_caseyes_txt);
rel = strcmp;
sel = strstr;
}
glob = ioline(fmtmk(N_fmt(OSEL_prompts_fmt), Curwin->osel_tot + 1, typ));
if (!snprintf(raw, sizeof(raw), "%s", glob)) return;
for (osel = Curwin->osel_1st; osel; ) {
if (!strcmp(osel->raw, glob)) { // #1: is criteria duplicate?
show_msg(N_txt(OSEL_errdups_txt));
return;
}
osel = osel->nxt;
}
if (*glob != '!') inc = 1; // #2: is it include/exclude?
else { ++glob; inc = 0; }
if (!(pval = strpbrk(glob, "<=>"))) { // #3: do we see a delimiter?
show_msg(fmtmk(N_fmt(OSEL_errdelm_fmt)
, inc ? N_txt(WORD_include_txt) : N_txt(WORD_exclude_txt)));
return;
}
ops = *(pval);
*(pval++) = '\0';
for (enu = 0; enu < P_MAXPFLGS; enu++) // #4: is this a valid field?
if (!STRCMP(N_col(enu), glob)) break;
if (enu == P_MAXPFLGS) {
show_msg(fmtmk(N_fmt(XTRA_badflds_fmt), glob));
return;
}
if (!(*pval)) { // #5: did we get some value?
show_msg(fmtmk(N_fmt(OSEL_errvalu_fmt)
, inc ? N_txt(WORD_include_txt) : N_txt(WORD_exclude_txt)));
return;
}
osel = alloc_c(sizeof(struct osel_s));
osel->inc = inc;
osel->enu = enu;
osel->ops = ops;
if (ops == '=') osel->val = alloc_s(pval);
else osel->val = alloc_s(justify_pad(pval, Fieldstab[enu].width, Fieldstab[enu].align));
osel->rel = rel;
osel->sel = sel;
osel->raw = alloc_s(raw);
osel->nxt = Curwin->osel_1st;
Curwin->osel_1st = osel;
Curwin->osel_tot += 1;
if (!Curwin->osel_prt) Curwin->osel_prt = alloc_c(strlen(raw) + 3);
else Curwin->osel_prt = alloc_r(Curwin->osel_prt, strlen(Curwin->osel_prt) + strlen(raw) + 6);
strcat(Curwin->osel_prt, fmtmk("%s'%s'", (Curwin->osel_tot > 1) ? " + " : "", raw));
#ifndef USE_X_COLHDR
SETw(Curwin, NOHISEL_xxx);
#endif
} // end: other_selection
static void write_rcfile (void) {
FILE *fp;
int i;
if (Rc_questions) {
show_pmt(N_txt(XTRA_warncfg_txt));
if ('y' != tolower(iokey(1)))
return;
Rc_questions = 0;
}
if (!(fp = fopen(Rc_name, "w"))) {
show_msg(fmtmk(N_fmt(FAIL_rc_open_fmt), Rc_name, strerror(errno)));
return;
}
fprintf(fp, "%s's " RCF_EYECATCHER, Myname);
fprintf(fp, "Id:%c, Mode_altscr=%d, Mode_irixps=%d, Delay_time=%d.%d, Curwin=%d\n"
, RCF_VERSION_ID
, Rc.mode_altscr, Rc.mode_irixps
// this may be ugly, but it keeps us locale independent...
, (int)Rc.delay_time, (int)((Rc.delay_time - (int)Rc.delay_time) * 1000)
, (int)(Curwin - Winstk));
for (i = 0 ; i < GROUPSMAX; i++) {
fprintf(fp, "%s\tfieldscur=%s\n"
, Winstk[i].rc.winname, Winstk[i].rc.fieldscur);
fprintf(fp, "\twinflags=%d, sortindx=%d, maxtasks=%d\n"
, Winstk[i].rc.winflags, Winstk[i].rc.sortindx
, Winstk[i].rc.maxtasks);
fprintf(fp, "\tsummclr=%d, msgsclr=%d, headclr=%d, taskclr=%d\n"
, Winstk[i].rc.summclr, Winstk[i].rc.msgsclr
, Winstk[i].rc.headclr, Winstk[i].rc.taskclr);
}
// any new addition(s) last, for older rcfiles compatibility...
fprintf(fp, "Fixed_widest=%d, Summ_mscale=%d, Task_mscale=%d, Zero_suppress=%d\n"
, Rc.fixed_widest, Rc.summ_mscale, Rc.task_mscale, Rc.zero_suppress);
if (Inspect.raw)
fputs(Inspect.raw, fp);
fclose(fp);
show_msg(fmtmk(N_fmt(WRITE_rcfile_fmt), Rc_name));
} // end: write_rcfile
/*###### Interactive Input Secondary support (do_key helpers) ##########*/
/*
* These routines exist just to keep the do_key() function
* a reasonably modest size. */
static void keys_global (int ch) {
WIN_t *w = Curwin; // avoid gcc bloat with a local copy
switch (ch) {
case '?':
case 'h':
help_view();
break;
case 'B':
TOGw(w, View_NOBOLD);
capsmk(w);
break;
case 'd':
case 's':
if (Secure_mode)
show_msg(N_txt(NOT_onsecure_txt));
else {
float tmp =
get_float(fmtmk(N_fmt(DELAY_change_fmt), Rc.delay_time));
if (-1 < tmp) Rc.delay_time = tmp;
}
break;
case 'E':
if (++Rc.summ_mscale > SK_Eb) Rc.summ_mscale = SK_Kb;
break;
case 'e':
if (++Rc.task_mscale > SK_Pb) Rc.task_mscale = SK_Kb;
break;
case 'F':
case 'f':
fields_utility();
break;
case 'g':
win_select(0);
break;
case 'H':
Thread_mode = !Thread_mode;
if (!CHKw(w, View_STATES))
show_msg(fmtmk(N_fmt(THREADS_show_fmt)
, Thread_mode ? N_txt(ON_word_only_txt) : N_txt(OFF_one_word_txt)));
// force an extra procs refresh to avoid %cpu distortions...
Pseudo_row = PROC_XTRA;
break;
case 'I':
if (Cpu_faux_tot > 1) {
Rc.mode_irixps = !Rc.mode_irixps;
show_msg(fmtmk(N_fmt(IRIX_curmode_fmt)
, Rc.mode_irixps ? N_txt(ON_word_only_txt) : N_txt(OFF_one_word_txt)));
} else
show_msg(N_txt(NOT_smp_cpus_txt));
break;
case 'k':
if (Secure_mode) {
show_msg(N_txt(NOT_onsecure_txt));
} else {
int pid, sig = SIGTERM, def = w->ppt[w->begtask]->tid;
if (GET_INT_BAD < (pid = get_int(fmtmk(N_txt(GET_pid2kill_fmt), def)))) {
char *str;
if (0 > pid) pid = def;
str = ioline(fmtmk(N_fmt(GET_sigs_num_fmt), pid, SIGTERM));
if (*str) sig = signal_name_to_number(str);
if (Frames_signal) break;
if (0 < sig && kill(pid, sig))
show_msg(fmtmk(N_fmt(FAIL_signals_fmt)
, pid, sig, strerror(errno)));
else if (0 > sig) show_msg(N_txt(BAD_signalid_txt));
}
}
break;
case 'r':
if (Secure_mode)
show_msg(N_txt(NOT_onsecure_txt));
else {
int val, pid, def = w->ppt[w->begtask]->tid;
if (GET_INT_BAD < (pid = get_int(fmtmk(N_txt(GET_pid2nice_fmt), def)))) {
if (0 > pid) pid = def;
if (GET_INTNONE < (val = get_int(fmtmk(N_fmt(GET_nice_num_fmt), pid))))
if (setpriority(PRIO_PROCESS, (unsigned)pid, val))
show_msg(fmtmk(N_fmt(FAIL_re_nice_fmt)
, pid, val, strerror(errno)));
}
}
break;
case 'X':
{ int wide = get_int(fmtmk(N_fmt(XTRA_fixwide_fmt), Rc.fixed_widest));
if (GET_INTNONE < wide) {
if (-1 < wide) Rc.fixed_widest = wide;
else if (INT_MIN < wide) Rc.fixed_widest = -1;
}
}
break;
case 'Y':
if (!Inspect.total)
ioline(N_txt(YINSP_noents_txt));
else {
int pid, def = w->ppt[w->begtask]->tid;
if (GET_INT_BAD < (pid = get_int(fmtmk(N_fmt(YINSP_pidsee_fmt), def)))) {
if (0 > pid) pid = def;
if (pid) inspection_utility(pid);
}
}
break;
case 'Z':
wins_colors();
break;
case '0':
Rc.zero_suppress = !Rc.zero_suppress;
break;
case kbd_ENTER: // these two have the effect of waking us
case kbd_SPACE: // from 'select()', updating hotplugged
sysinfo_refresh(1); // resources and refreshing the display
break;
default: // keep gcc happy
break;
}
} // end: keys_global
static void keys_summary (int ch) {
WIN_t *w = Curwin; // avoid gcc bloat with a local copy
switch (ch) {
case '1':
if (CHKw(w, View_CPUNOD)) OFFw(w, View_CPUSUM);
else TOGw(w, View_CPUSUM);
OFFw(w, View_CPUNOD);
SETw(w, View_STATES);
break;
case '2':
if (!Numa_node_tot)
show_msg(N_txt(NUMA_nodenot_txt));
else {
if (Numa_node_sel < 0) TOGw(w, View_CPUNOD);
if (!CHKw(w, View_CPUNOD)) SETw(w, View_CPUSUM);
SETw(w, View_STATES);
Numa_node_sel = -1;
}
break;
case '3':
if (!Numa_node_tot)
show_msg(N_txt(NUMA_nodenot_txt));
else {
int num = get_int(fmtmk(N_fmt(NUMA_nodeget_fmt), Numa_node_tot -1));
if (GET_INTNONE < num) {
if (num >= 0 && num < Numa_node_tot) {
Numa_node_sel = num;
SETw(w, View_CPUNOD | View_STATES);
OFFw(w, View_CPUSUM);
} else
show_msg(N_txt(NUMA_nodebad_txt));
}
}
break;
case 'C':
VIZTOGw(w, View_SCROLL);
break;
case 'l':
TOGw(w, View_LOADAV);
break;
case 'm':
TOGw(w, View_MEMORY);
break;
case 't':
TOGw(w, View_STATES);
break;
default: // keep gcc happy
break;
}
} // end: keys_summary
static void keys_task (int ch) {
WIN_t *w = Curwin; // avoid gcc bloat with a local copy
switch (ch) {
case '#':
case 'n':
if (VIZCHKw(w)) {
int num = get_int(fmtmk(N_fmt(GET_max_task_fmt), w->rc.maxtasks));
if (GET_INTNONE < num) {
if (-1 < num ) w->rc.maxtasks = num;
else show_msg(N_txt(BAD_max_task_txt));
}
}
break;
case '<':
#ifdef TREE_NORESET
if (CHKw(w, Show_FOREST)) break;
#endif
if (VIZCHKw(w)) {
FLG_t *p = w->procflgs + w->maxpflgs - 1;
while (p > w->procflgs && *p != w->rc.sortindx) --p;
if (*p == w->rc.sortindx) {
--p;
#ifndef USE_X_COLHDR
if (P_MAXPFLGS < *p) --p;
#endif
if (p >= w->procflgs) {
w->rc.sortindx = *p;
#ifndef TREE_NORESET
OFFw(w, Show_FOREST);
#endif
}
}
}
break;
case '>':
#ifdef TREE_NORESET
if (CHKw(w, Show_FOREST)) break;
#endif
if (VIZCHKw(w)) {
FLG_t *p = w->procflgs + w->maxpflgs - 1;
while (p > w->procflgs && *p != w->rc.sortindx) --p;
if (*p == w->rc.sortindx) {
++p;
#ifndef USE_X_COLHDR
if (P_MAXPFLGS < *p) ++p;
#endif
if (p < w->procflgs + w->maxpflgs) {
w->rc.sortindx = *p;
#ifndef TREE_NORESET
OFFw(w, Show_FOREST);
#endif
}
}
}
break;
case 'b':
if (VIZCHKw(w)) {
#ifdef USE_X_COLHDR
if (!CHKw(w, Show_HIROWS))
#else
if (!CHKw(w, Show_HICOLS | Show_HIROWS))
#endif
show_msg(N_txt(HILIGHT_cant_txt));
else {
TOGw(w, Show_HIBOLD);
capsmk(w);
}
}
break;
case 'c':
VIZTOGw(w, Show_CMDLIN);
break;
case 'i':
VIZTOGw(w, Show_IDLEPS);
break;
case 'J':
VIZTOGw(w, Show_JRNUMS);
break;
case 'j':
VIZTOGw(w, Show_JRSTRS);
break;
case 'R':
#ifdef TREE_NORESET
if (!CHKw(w, Show_FOREST)) VIZTOGw(w, Qsrt_NORMAL);
#else
if (VIZCHKw(w)) {
TOGw(w, Qsrt_NORMAL);
OFFw(w, Show_FOREST);
}
#endif
break;
case 'S':
if (VIZCHKw(w)) {
TOGw(w, Show_CTIMES);
show_msg(fmtmk(N_fmt(TIME_accumed_fmt) , CHKw(w, Show_CTIMES)
? N_txt(ON_word_only_txt) : N_txt(OFF_one_word_txt)));
}
break;
case 'O':
case 'o':
if (VIZCHKw(w)) other_selection(ch);
break;
case 'U':
case 'u':
if (VIZCHKw(w)) {
const char *errmsg;
if ((errmsg = user_certify(w, ioline(N_txt(GET_user_ids_txt)), ch)))
show_msg(errmsg);
}
break;
case 'V':
if (VIZCHKw(w)) {
TOGw(w, Show_FOREST);
if (!ENUviz(w, P_CMD))
show_msg(fmtmk(N_fmt(FOREST_modes_fmt) , CHKw(w, Show_FOREST)
? N_txt(ON_word_only_txt) : N_txt(OFF_one_word_txt)));
}
break;
case 'x':
if (VIZCHKw(w)) {
#ifdef USE_X_COLHDR
TOGw(w, Show_HICOLS);
capsmk(w);
#else
if (ENUviz(w, w->rc.sortindx)) {
TOGw(w, Show_HICOLS);
if (ENUpos(w, w->rc.sortindx) < w->begpflg) {
if (CHKw(w, Show_HICOLS)) w->begpflg += 2;
else w->begpflg -= 2;
if (0 > w->begpflg) w->begpflg = 0;
}
capsmk(w);
}
#endif
}
break;
case 'y':
if (VIZCHKw(w)) {
TOGw(w, Show_HIROWS);
capsmk(w);
}
break;
case 'z':
if (VIZCHKw(w)) {
TOGw(w, Show_COLORS);
capsmk(w);
}
break;
case kbd_CtrlO:
if (VIZCHKw(w))
ioline(fmtmk(N_fmt(OSEL_statlin_fmt)
, w->osel_prt ? w->osel_prt : N_txt(WORD_noneone_txt)));
break;
default: // keep gcc happy
break;
}
} // end: keys_task
static void keys_window (int ch) {
WIN_t *w = Curwin; // avoid gcc bloat with a local copy
switch (ch) {
case '+':
if (ALTCHKw) wins_reflag(Flags_OFF, EQUWINS_xxx);
break;
case '-':
if (ALTCHKw) TOGw(w, Show_TASKON);
break;
case '=':
win_reset(w);
break;
case '_':
if (ALTCHKw) wins_reflag(Flags_TOG, Show_TASKON);
break;
case '&':
case 'L':
if (VIZCHKw(w)) find_string(ch);
break;
case 'A':
Rc.mode_altscr = !Rc.mode_altscr;
break;
case 'a':
case 'w':
if (ALTCHKw) win_select(ch);
break;
case 'G':
if (ALTCHKw) {
char tmp[SMLBUFSIZ];
STRLCPY(tmp, ioline(fmtmk(N_fmt(NAME_windows_fmt), w->rc.winname)));
if (tmp[0]) win_names(w, tmp);
}
break;
case kbd_UP:
if (VIZCHKw(w)) if (0 < w->begtask) w->begtask -= 1;
break;
case kbd_DOWN:
if (VIZCHKw(w)) if (w->begtask < Frame_maxtask - 1) w->begtask += 1;
break;
#ifdef USE_X_COLHDR // ------------------------------------
case kbd_LEFT:
#ifndef SCROLLVAR_NO
if (VIZCHKw(w)) {
if (VARleft(w))
w->varcolbeg -= SCROLLAMT;
else if (0 < w->begpflg)
w->begpflg -= 1;
}
#else
if (VIZCHKw(w)) if (0 < w->begpflg) w->begpflg -= 1;
#endif
break;
case kbd_RIGHT:
#ifndef SCROLLVAR_NO
if (VIZCHKw(w)) {
if (VARright(w)) {
w->varcolbeg += SCROLLAMT;
if (0 > w->varcolbeg) w->varcolbeg = 0;
} else if (w->begpflg + 1 < w->totpflgs)
w->begpflg += 1;
}
#else
if (VIZCHKw(w)) if (w->begpflg + 1 < w->totpflgs) w->begpflg += 1;
#endif
break;
#else // USE_X_COLHDR ------------------------------------
case kbd_LEFT:
#ifndef SCROLLVAR_NO
if (VIZCHKw(w)) {
if (VARleft(w))
w->varcolbeg -= SCROLLAMT;
else if (0 < w->begpflg) {
w->begpflg -= 1;
if (P_MAXPFLGS < w->pflgsall[w->begpflg]) w->begpflg -= 2;
}
}
#else
if (VIZCHKw(w)) if (0 < w->begpflg) {
w->begpflg -= 1;
if (P_MAXPFLGS < w->pflgsall[w->begpflg]) w->begpflg -= 2;
}
#endif
break;
case kbd_RIGHT:
#ifndef SCROLLVAR_NO
if (VIZCHKw(w)) {
if (VARright(w)) {
w->varcolbeg += SCROLLAMT;
if (0 > w->varcolbeg) w->varcolbeg = 0;
} else if (w->begpflg + 1 < w->totpflgs) {
if (P_MAXPFLGS < w->pflgsall[w->begpflg])
w->begpflg += (w->begpflg + 3 < w->totpflgs) ? 3 : 0;
else w->begpflg += 1;
}
}
#else
if (VIZCHKw(w)) if (w->begpflg + 1 < w->totpflgs) {
if (P_MAXPFLGS < w->pflgsall[w->begpflg])
w->begpflg += (w->begpflg + 3 < w->totpflgs) ? 3 : 0;
else w->begpflg += 1;
}
#endif
break;
#endif // USE_X_COLHDR ------------------------------------
case kbd_PGUP:
if (VIZCHKw(w)) if (0 < w->begtask) {
w->begtask -= (w->winlines - 1);
if (0 > w->begtask) w->begtask = 0;
}
break;
case kbd_PGDN:
if (VIZCHKw(w)) if (w->begtask < Frame_maxtask - 1) {
w->begtask += (w->winlines - 1);
if (w->begtask > Frame_maxtask - 1) w->begtask = Frame_maxtask - 1;
if (0 > w->begtask) w->begtask = 0;
}
break;
case kbd_HOME:
#ifndef SCROLLVAR_NO
if (VIZCHKw(w)) w->begtask = w->begpflg = w->varcolbeg = 0;
#else
if (VIZCHKw(w)) w->begtask = w->begpflg = 0;
#endif
break;
case kbd_END:
if (VIZCHKw(w)) {
w->begtask = (Frame_maxtask - w->winlines) + 1;
if (0 > w->begtask) w->begtask = 0;
w->begpflg = w->endpflg;
#ifndef SCROLLVAR_NO
w->varcolbeg = 0;
#endif
}
break;
default: // keep gcc happy
break;
}
} // end: keys_window
static void keys_xtra (int ch) {
// const char *xmsg;
WIN_t *w = Curwin; // avoid gcc bloat with a local copy
#ifdef TREE_NORESET
if (CHKw(w, Show_FOREST)) return;
#else
OFFw(w, Show_FOREST);
#endif
/* these keys represent old-top compatibility --
they're grouped here so that if users could ever be weaned,
we would just whack do_key's key_tab entry and this function... */
switch (ch) {
case 'M':
w->rc.sortindx = P_MEM;
// xmsg = "Memory";
break;
case 'N':
w->rc.sortindx = P_PID;
// xmsg = "Numerical";
break;
case 'P':
w->rc.sortindx = P_CPU;
// xmsg = "CPU";
break;
case 'T':
w->rc.sortindx = P_TM2;
// xmsg = "Time";
break;
default: // keep gcc happy
break;
}
// some have objected to this message, so we'll just keep silent...
// show_msg(fmtmk("%s sort compatibility key honored", xmsg));
} // end: keys_xtra
/*###### Forest View support ###########################################*/
/*
* We try to keep most existing code unaware of our activities
* ( plus, maintain alphabetical order with carefully chosen )
* ( function names: forest_a, forest_b, forest_c & forest_d )
* ( each with exactly one letter more than its predecessor! ) */
static proc_t **Seed_ppt; // temporary window ppt ptr
static proc_t **Tree_ppt; // resized by forest_create
static int Tree_idx; // frame_make initializes
/*
* This little recursive guy is the real forest view workhorse.
* He fills in the Tree_ppt array and also sets the child indent
* level which is stored in an unused proc_t padding byte. */
static void forest_adds (const int self, const int level) {
int i;
Tree_ppt[Tree_idx] = Seed_ppt[self]; // add this as root or child
Tree_ppt[Tree_idx++]->pad_3 = level; // borrow 1 byte, 127 levels
for (i = self + 1; i < Frame_maxtask; i++) {
if (Seed_ppt[self]->tid == Seed_ppt[i]->tgid
|| (Seed_ppt[self]->tid == Seed_ppt[i]->ppid && Seed_ppt[i]->tid == Seed_ppt[i]->tgid))
forest_adds(i, level + 1); // got one child any others?
}
} // end: forest_adds
/*
* Our qsort callback to order a ppt by the non-display start_time
* which will make us immune from any pid, ppid or tgid anomalies
* if/when pid values are wrapped by the kernel! */
static int forest_based (const proc_t **x, const proc_t **y) {
if ( (*x)->start_time > (*y)->start_time ) return 1;
if ( (*x)->start_time < (*y)->start_time ) return -1;
return 0;
} // end: forest_based
/*
* This routine is responsible for preparing the proc_t's for
* a forest display in the designated window. Upon completion,
* he'll replace the original window ppt with our specially
* ordered forest version. */
static void forest_create (WIN_t *q) {
static int hwmsav;
int i;
Seed_ppt = q->ppt; // avoid passing WIN_t ptrs
if (!Tree_idx) { // do just once per frame
if (hwmsav < Frame_maxtask) { // grow, but never shrink
hwmsav = Frame_maxtask;
Tree_ppt = alloc_r(Tree_ppt, sizeof(proc_t*) * hwmsav);
}
qsort(Seed_ppt, Frame_maxtask, sizeof(proc_t*), (QFP_t)forest_based);
for (i = 0; i < Frame_maxtask; i++) // avoid any hidepid distortions
if (!Seed_ppt[i]->pad_3) // identify real or pretend trees
forest_adds(i, 1); // add as parent plus its children
}
memcpy(Seed_ppt, Tree_ppt, sizeof(proc_t*) * Frame_maxtask);
} // end: forest_create
/*
* This guy adds the artwork to either p->cmd or p->cmdline
* when in forest view mode, otherwise he just returns 'em. */
static inline const char *forest_display (const WIN_t *q, const proc_t *p) {
#ifndef SCROLLVAR_NO
static char buf[1024*64*2]; // the same as readproc's MAX_BUFSZ
#else
static char buf[ROWMINSIZ];
#endif
const char *which = (CHKw(q, Show_CMDLIN)) ? *p->cmdline : p->cmd;
if (!CHKw(q, Show_FOREST) || 1 == p->pad_3) return which;
snprintf(buf, sizeof(buf), "%*s%s", 4 * (p->pad_3 - 1), " `- ", which);
return buf;
} // end: forest_display
/*###### Main Screen routines ##########################################*/
/*
* Process keyboard input during the main loop */
static void do_key (int ch) {
static struct {
void (*func)(int ch);
char keys[SMLBUFSIZ];
} key_tab[] = {
{ keys_global,
{ '?', 'B', 'd', 'E', 'e', 'F', 'f', 'g', 'H', 'h'
, 'I', 'k', 'r', 's', 'X', 'Y', 'Z', '0'
, kbd_ENTER, kbd_SPACE, '\0' } },
{ keys_summary,
{ '1', '2', '3', 'C', 'l', 'm', 't', '\0' } },
{ keys_task,
{ '#', '<', '>', 'b', 'c', 'i', 'J', 'j', 'n', 'O', 'o'
, 'R', 'S', 'U', 'u', 'V', 'x', 'y', 'z'
, kbd_CtrlO, '\0' } },
{ keys_window,
{ '+', '-', '=', '_', '&', 'A', 'a', 'G', 'L', 'w'
, kbd_UP, kbd_DOWN, kbd_LEFT, kbd_RIGHT, kbd_PGUP, kbd_PGDN
, kbd_HOME, kbd_END, '\0' } },
{ keys_xtra,
{ 'M', 'N', 'P', 'T', '\0'} }
};
int i;
switch (ch) {
case 0: // ignored (always)
case kbd_ESC: // ignored (sometimes)
goto all_done;
case 'q': // no return from this guy
bye_bye(NULL);
case 'W': // no need for rebuilds
write_rcfile();
goto all_done;
default: // and now, the real work...
for (i = 0; i < MAXTBL(key_tab); ++i)
if (strchr(key_tab[i].keys, ch)) {
key_tab[i].func(ch);
Frames_signal = BREAK_kbd;
goto all_done;
}
};
/* Frames_signal above will force a rebuild of all column headers and
the PROC_FILLxxx flags. It's NOT simply lazy programming. Here are
some keys that COULD require new column headers and/or libproc flags:
'A' - likely
'c' - likely when !Mode_altscr, maybe when Mode_altscr
'F' - likely
'f' - likely
'g' - likely
'H' - likely
'I' - likely
'J' - always
'j' - always
'Z' - likely, if 'Curwin' changed when !Mode_altscr
'-' - likely (restricted to Mode_altscr)
'_' - likely (restricted to Mode_altscr)
'=' - maybe, but only when Mode_altscr
'+' - likely (restricted to Mode_altscr)
PLUS, likely for FOUR of the EIGHT cursor motion keys (scrolled)
( At this point we have a human being involved and so have all the time )
( in the world. We can afford a few extra cpu cycles every now & then! )
*/
show_msg(N_txt(UNKNOWN_cmds_txt));
all_done:
putp((Cursor_state = Cap_curs_hide));
} // end: do_key
/*
* State display *Helper* function to calc and display the state
* percentages for a single cpu. In this way, we can support
* the following environments without the usual code bloat.
* 1) single cpu machines
* 2) modest smp boxes with room for each cpu's percentages
* 3) massive smp guys leaving little or no room for process
* display and thus requiring the cpu summary toggle */
static void summary_hlp (CPU_t *cpu, const char *pfx) {
/* we'll trim to zero if we get negative time ticks,
which has happened with some SMP kernels (pre-2.4?)
and when cpus are dynamically added or removed */
#define TRIMz(x) ((tz = (SIC_t)(x)) < 0 ? 0 : tz)
SIC_t u_frme, s_frme, n_frme, i_frme, w_frme, x_frme, y_frme, z_frme, tot_frme, tz;
float scale;
u_frme = TRIMz(cpu->cur.u - cpu->sav.u);
s_frme = TRIMz(cpu->cur.s - cpu->sav.s);
n_frme = TRIMz(cpu->cur.n - cpu->sav.n);
i_frme = TRIMz(cpu->cur.i - cpu->sav.i);
w_frme = TRIMz(cpu->cur.w - cpu->sav.w);
x_frme = TRIMz(cpu->cur.x - cpu->sav.x);
y_frme = TRIMz(cpu->cur.y - cpu->sav.y);
z_frme = TRIMz(cpu->cur.z - cpu->sav.z);
tot_frme = u_frme + s_frme + n_frme + i_frme + w_frme + x_frme + y_frme + z_frme;
#ifdef CPU_ZEROTICS
if (1 > tot_frme) tot_frme = 1;
#else
if (tot_frme < cpu->edge)
tot_frme = u_frme = s_frme = n_frme = i_frme = w_frme = x_frme = y_frme = z_frme = 0;
if (1 > tot_frme) i_frme = tot_frme = 1;
#endif
scale = 100.0 / (float)tot_frme;
/* display some kinda' cpu state percentages
(who or what is explained by the passed prefix) */
show_special(0, fmtmk(Cpu_States_fmts, pfx
, (float)u_frme * scale, (float)s_frme * scale
, (float)n_frme * scale, (float)i_frme * scale
, (float)w_frme * scale, (float)x_frme * scale
, (float)y_frme * scale, (float)z_frme * scale));
#undef TRIMz
} // end: summary_hlp
/*
* In support of a new frame:
* 1) Display uptime and load average (maybe)
* 2) Display task/cpu states (maybe)
* 3) Display memory & swap usage (maybe) */
static void summary_show (void) {
#define isROOM(f,n) (CHKw(w, f) && Msg_row + (n) < Screen_rows - 1)
#define anyFLG 0xffffff
static CPU_t *smpcpu = NULL;
WIN_t *w = Curwin; // avoid gcc bloat with a local copy
char tmp[MEDBUFSIZ];
int i;
// Display Uptime and Loadavg
if (isROOM(View_LOADAV, 1)) {
if (!Rc.mode_altscr)
show_special(0, fmtmk(LOADAV_line, Myname, sprint_uptime()));
else
show_special(0, fmtmk(CHKw(w, Show_TASKON)? LOADAV_line_alt : LOADAV_line
, w->grpname, sprint_uptime()));
Msg_row += 1;
} // end: View_LOADAV
// Display Task and Cpu(s) States
if (isROOM(View_STATES, 2)) {
show_special(0, fmtmk(N_unq(STATE_line_1_fmt)
, Thread_mode ? N_txt(WORD_threads_txt) : N_txt(WORD_process_txt)
, Frame_maxtask, Frame_running, Frame_sleepin
, Frame_stopped, Frame_zombied));
Msg_row += 1;
smpcpu = cpus_refresh(smpcpu);
#ifndef NUMA_DISABLE
if (!Numa_node_tot) goto numa_nope;
if (CHKw(w, View_CPUNOD)) {
if (Numa_node_sel < 0) {
// display the 1st /proc/stat line, then the nodes (if room)
summary_hlp(&smpcpu[smp_num_cpus], N_txt(WORD_allcpus_txt));
Msg_row += 1;
// display each cpu node's states
for (i = 0; i < Numa_node_tot; i++) {
if (!isROOM(anyFLG, 1)) break;
snprintf(tmp, sizeof(tmp), N_fmt(NUMA_nodenam_fmt), i);
summary_hlp(&smpcpu[1 + smp_num_cpus + i], tmp);
Msg_row += 1;
}
} else {
// display the node summary, then the associated cpus (if room)
snprintf(tmp, sizeof(tmp), N_fmt(NUMA_nodenam_fmt), Numa_node_sel);
summary_hlp(&smpcpu[1 + smp_num_cpus + Numa_node_sel], tmp);
Msg_row += 1;
for (i = 0; i < Cpu_faux_tot; i++) {
if (Numa_node_sel == smpcpu[i].node) {
if (!isROOM(anyFLG, 1)) break;
snprintf(tmp, sizeof(tmp), N_fmt(WORD_eachcpu_fmt), smpcpu[i].id);
summary_hlp(&smpcpu[i], tmp);
Msg_row += 1;
}
}
}
} else
numa_nope:
#endif
if (CHKw(w, View_CPUSUM)) {
// display just the 1st /proc/stat line
summary_hlp(&smpcpu[Cpu_faux_tot], N_txt(WORD_allcpus_txt));
Msg_row += 1;
} else {
// display each cpu's states separately, screen height permitting...
for (i = 0; i < Cpu_faux_tot; i++) {
snprintf(tmp, sizeof(tmp), N_fmt(WORD_eachcpu_fmt), smpcpu[i].id);
summary_hlp(&smpcpu[i], tmp);
Msg_row += 1;
if (!isROOM(anyFLG, 1)) break;
}
}
} // end: View_STATES
// Display Memory and Swap stats
if (isROOM(View_MEMORY, 2)) {
#define bfT(n) buftab[n].buf
#define scT(e) scaletab[Rc.summ_mscale]. e
#define mkM(x) (float)kb_main_ ## x / scT(div)
#define mkS(x) (float)kb_swap_ ## x / scT(div)
#define prT(b,z) { if (9 < snprintf(b, 10, scT(fmts), z)) b[8] = '+'; }
static struct {
float div;
const char *fmts;
const char *label;
} scaletab[] = {
{ 1, "%8.0f ", NULL }, // kibibytes
{ 1024.0, "%#4.3f ", NULL }, // mebibytes
{ 1024.0*1024, "%#4.3f ", NULL }, // gibibytes
{ 1024.0*1024*1024, "%#4.3f ", NULL }, // tebibytes
{ 1024.0*1024*1024*1024, "%#4.3f ", NULL }, // pebibytes
{ 1024.0*1024*1024*1024*1024, "%#4.3f ", NULL } // exbibytes
};
struct { // 0123456789
// snprintf contents of each buf (after SK_Kb): 'nnnn.nnn 0'
// and prT macro might replace space at buf[8] with: ------> +
char buf[10]; // MEMORY_lines_fmt provides for 8+1 bytes
} buftab[8];
if (!scaletab[0].label) {
scaletab[0].label = N_txt(AMT_kilobyte_txt);
scaletab[1].label = N_txt(AMT_megabyte_txt);
scaletab[2].label = N_txt(AMT_gigabyte_txt);
scaletab[3].label = N_txt(AMT_terabyte_txt);
scaletab[4].label = N_txt(AMT_petabyte_txt);
scaletab[5].label = N_txt(AMT_exxabyte_txt);
}
prT(bfT(0), mkM(total)); prT(bfT(1), mkM(used));
prT(bfT(2), mkM(free)); prT(bfT(3), mkM(buffers));
prT(bfT(4), mkS(total)); prT(bfT(5), mkS(used));
prT(bfT(6), mkS(free)); prT(bfT(7), mkM(cached));
show_special(0, fmtmk(N_unq(MEMORY_lines_fmt)
, scT(label), bfT(0), bfT(1), bfT(2), bfT(3)
, scT(label), bfT(4), bfT(5), bfT(6), bfT(7)));
Msg_row += 2;
#undef bfT
#undef scT
#undef mkM
#undef mkS
#undef prT
} // end: View_MEMORY
#undef isROOM
#undef anyFLG
} // end: summary_show
/*
* Build the information for a single task row and
* display the results or return them to the caller. */
static const char *task_show (const WIN_t *q, const proc_t *p) {
#ifndef SCROLLVAR_NO
#define makeVAR(v) { const char *pv = v; \
if (!q->varcolbeg) cp = make_str(pv, q->varcolsz, Js, AUTOX_NO); \
else cp = make_str(q->varcolbeg < (int)strlen(pv) ? pv + q->varcolbeg : "", q->varcolsz, Js, AUTOX_NO); }
#else
#define makeVAR(v) cp = make_str(v, q->varcolsz, Js, AUTOX_NO)
#endif
#define pages2K(n) (unsigned long)( (n) << Pg2K_shft )
static char rbuf[ROWMINSIZ];
char *rp;
int x;
// we must begin a row with a possible window number in mind...
*(rp = rbuf) = '\0';
if (Rc.mode_altscr) rp = scat(rp, " ");
for (x = 0; x < q->maxpflgs; x++) {
const char *cp;
FLG_t i = q->procflgs[x];
#define S Fieldstab[i].scale // these used to be variables
#define W Fieldstab[i].width // but it's much better if we
#define Js CHKw(q, Show_JRSTRS) // represent them as #defines
#define Jn CHKw(q, Show_JRNUMS) // and only exec code if used
switch (i) {
#ifndef USE_X_COLHDR
// these 2 aren't real procflgs, they're used in column highlighting!
case X_XON:
case X_XOF:
cp = NULL;
if (!CHKw(q, INFINDS_xxx | NOHIFND_xxx | NOHISEL_xxx)) {
/* treat running tasks specially - entire row may get highlighted
so we needn't turn it on and we MUST NOT turn it off */
if (!('R' == p->state && CHKw(q, Show_HIROWS)))
cp = (X_XON == i ? q->capclr_rowhigh : q->capclr_rownorm);
}
break;
#endif
case P_CGR:
makeVAR(p->cgroup[0]);
break;
case P_CMD:
makeVAR(forest_display(q, p));
break;
case P_COD:
cp = scale_mem(S, pages2K(p->trs), W, Jn);
break;
case P_CPN:
cp = make_num(p->processor, W, Jn, AUTOX_NO);
break;
case P_CPU:
{ float u = (float)p->pcpu * Frame_etscale;
/* process can't use more %cpu than number of threads it has
( thanks Jaromir Capik <jcapik@redhat.com> ) */
if (u > 100.0 * p->nlwp) u = 100.0 * p->nlwp;
if (u > Cpu_pmax) u = Cpu_pmax;
cp = scale_pcnt(u, W, Jn);
}
break;
case P_DAT:
cp = scale_mem(S, pages2K(p->drs), W, Jn);
break;
case P_DRT:
cp = scale_num(p->dt, W, Jn);
break;
case P_ENV:
makeVAR(p->environ[0]);
break;
case P_FLG:
cp = make_str(hex_make(p->flags, 1), W, Js, AUTOX_NO);
break;
case P_FL1:
cp = scale_num(p->maj_flt, W, Jn);
break;
case P_FL2:
cp = scale_num(p->min_flt, W, Jn);
break;
case P_FV1:
cp = scale_num(p->maj_delta, W, Jn);
break;
case P_FV2:
cp = scale_num(p->min_delta, W, Jn);
break;
case P_GID:
cp = make_num(p->egid, W, Jn, P_GID);
break;
case P_GRP:
cp = make_str(p->egroup, W, Js, P_GRP);
break;
case P_MEM:
cp = scale_pcnt((float)pages2K(p->resident) * 100 / kb_main_total, W, Jn);
break;
case P_NCE:
cp = make_num(p->nice, W, Jn, AUTOX_NO);
break;
#ifdef OOMEM_ENABLE
case P_OOA:
cp = make_num(p->oom_adj, W, Jn, AUTOX_NO);
break;
case P_OOM:
cp = make_num(p->oom_score, W, Jn, AUTOX_NO);
break;
#endif
case P_PGD:
cp = make_num(p->pgrp, W, Jn, AUTOX_NO);
break;
case P_PID:
cp = make_num(p->tid, W, Jn, AUTOX_NO);
break;
case P_PPD:
cp = make_num(p->ppid, W, Jn, AUTOX_NO);
break;
case P_PRI:
if (-99 > p->priority || 999 < p->priority) {
cp = make_str("rt", W, Jn, AUTOX_NO);
} else
cp = make_num(p->priority, W, Jn, AUTOX_NO);
break;
case P_RES:
cp = scale_mem(S, pages2K(p->resident), W, Jn);
break;
case P_SGD:
makeVAR(p->supgid);
break;
case P_SGN:
makeVAR(p->supgrp);
break;
case P_SHR:
cp = scale_mem(S, pages2K(p->share), W, Jn);
break;
case P_SID:
cp = make_num(p->session, W, Jn, AUTOX_NO);
break;
case P_STA:
cp = make_chr(p->state, W, Js);
break;
case P_SWP:
cp = scale_mem(S, p->vm_swap, W, Jn);
break;
case P_TGD:
cp = make_num(p->tgid, W, Jn, AUTOX_NO);
break;
case P_THD:
cp = make_num(p->nlwp, W, Jn, AUTOX_NO);
break;
case P_TME:
case P_TM2:
{ TIC_t t = p->utime + p->stime;
if (CHKw(q, Show_CTIMES)) t += (p->cutime + p->cstime);
cp = scale_tics(t, W, Jn);
}
break;
case P_TPG:
cp = make_num(p->tpgid, W, Jn, AUTOX_NO);
break;
case P_TTY:
{ char tmp[SMLBUFSIZ];
dev_to_tty(tmp, W, p->tty, p->tid, ABBREV_DEV);
cp = make_str(tmp, W, Js, P_TTY);
}
break;
case P_UED:
cp = make_num(p->euid, W, Jn, P_UED);
break;
case P_UEN:
cp = make_str(p->euser, W, Js, P_UEN);
break;
case P_URD:
cp = make_num(p->ruid, W, Jn, P_URD);
break;
case P_URN:
cp = make_str(p->ruser, W, Js, P_URN);
break;
case P_USD:
cp = make_num(p->suid, W, Jn, P_USD);
break;
case P_USE:
cp = scale_mem(S, (p->vm_swap + pages2K(p->resident)), W, Jn);
break;
case P_USN:
cp = make_str(p->suser, W, Js, P_USN);
break;
case P_VRT:
cp = scale_mem(S, pages2K(p->size), W, Jn);
break;
case P_WCH:
{ const char *u;
if (No_ksyms)
u = hex_make(p->wchan, 0);
else
u = lookup_wchan(p->wchan, p->tid);
cp = make_str(u, W, Js, P_WCH);
}
break;
default: // keep gcc happy
continue;
} // end: switch 'procflag'
if (cp) {
if (q->osel_tot && !osel_matched(q, i, cp)) return "";
rp = scat(rp, cp);
}
#undef S
#undef W
#undef Js
#undef Jn
} // end: for 'maxpflgs'
if (!CHKw(q, INFINDS_xxx)) {
const char *cap = ((CHKw(q, Show_HIROWS) && 'R' == p->state))
? q->capclr_rowhigh : q->capclr_rownorm;
char *row = rbuf;
int ofs;
/* since we can't predict what the search string will be and,
considering what a single space search request would do to
potential buffer needs, when any matches are found we skip
normal output routing and send all of the results directly
to the terminal (and we sound asthmatic: poof, putt, puff) */
if (-1 < (ofs = find_ofs(q, row))) {
POOF("\n", cap);
do {
row[ofs] = '\0';
PUTT("%s%s%s%s", row, q->capclr_hdr, q->findstr, cap);
row += (ofs + q->findlen);
ofs = find_ofs(q, row);
} while (-1 < ofs);
PUTT("%s%s", row, Caps_endline);
// with a corrupted rbuf, ensure row is 'counted' by window_show
rbuf[0] = '!';
} else
PUFF("\n%s%s%s", cap, row, Caps_endline);
}
return rbuf;
#undef makeVAR
#undef pages2K
} // end: task_show
/*
* Squeeze as many tasks as we can into a single window,
* after sorting the passed proc table. */
static int window_show (WIN_t *q, int wmax) {
/* the isBUSY macro determines if a task is 'active' --
it returns true if some cpu was used since the last sample.
( actual 'running' tasks will be a subset of those selected ) */
#define isBUSY(x) (0 < x->pcpu)
#define winMIN(a,b) ((a < b) ? a : b)
int i, lwin;
// Display Column Headings -- and distract 'em while we sort (maybe)
PUFF("\n%s%s%s", q->capclr_hdr, q->columnhdr, Caps_endline);
if (CHKw(q, Show_FOREST))
forest_create(q);
else {
if (CHKw(q, Qsrt_NORMAL)) Frame_srtflg = 1; // this is always needed!
else Frame_srtflg = -1;
Frame_ctimes = CHKw(q, Show_CTIMES); // this & next, only maybe
Frame_cmdlin = CHKw(q, Show_CMDLIN);
qsort(q->ppt, Frame_maxtask, sizeof(proc_t*), Fieldstab[q->rc.sortindx].sort);
}
i = q->begtask;
lwin = 1; // 1 for the column header
wmax = winMIN(wmax, q->winlines + 1); // ditto for winlines, too
/* the least likely scenario is also the most costly, so we'll try to avoid
checking some stuff with each iteration and check it just once... */
if (CHKw(q, Show_IDLEPS) && !q->usrseltyp)
while (i < Frame_maxtask && lwin < wmax) {
if (*task_show(q, q->ppt[i++]))
++lwin;
}
else
while (i < Frame_maxtask && lwin < wmax) {
if ((CHKw(q, Show_IDLEPS) || isBUSY(q->ppt[i]))
&& user_matched(q, q->ppt[i])
&& *task_show(q, q->ppt[i++]))
++lwin;
++i;
}
return lwin;
#undef winMIN
#undef isBUSY
} // end: window_show
/*###### Entry point plus two ##########################################*/
/*
* This guy's just a *Helper* function who apportions the
* remaining amount of screen real estate under multiple windows */
static void frame_hlp (int wix, int max) {
int i, size, wins;
// calc remaining number of visible windows
for (i = wix, wins = 0; i < GROUPSMAX; i++)
if (CHKw(&Winstk[i], Show_TASKON))
++wins;
if (!wins) wins = 1;
// deduct 1 line/window for the columns heading
size = (max - wins) / wins;
/* for subject window, set WIN_t winlines to either the user's
maxtask (1st choice) or our 'foxized' size calculation
(foxized adj. - 'fair and balanced') */
Winstk[wix].winlines =
Winstk[wix].rc.maxtasks ? Winstk[wix].rc.maxtasks : size;
} // end: frame_hlp
/*
* Initiate the Frame Display Update cycle at someone's whim!
* This routine doesn't do much, mostly he just calls others.
*
* (Whoa, wait a minute, we DO caretake those row guys, plus)
* (we CALCULATE that IMPORTANT Max_lines thingy so that the)
* (*subordinate* functions invoked know WHEN the user's had)
* (ENOUGH already. And at Frame End, it SHOULD be apparent)
* (WE am d'MAN -- clearing UNUSED screen LINES and ensuring)
* (that those auto-sized columns are addressed, know what I)
* (mean? Huh, "doesn't DO MUCH"! Never, EVER think or say)
* (THAT about THIS function again, Ok? Good that's better.)
*
* (ps. we ARE the UNEQUALED justification KING of COMMENTS!)
* (No, I don't mean significance/relevance, only alignment.)
*/
static void frame_make (void) {
WIN_t *w = Curwin; // avoid gcc bloat with a local copy
int i, scrlins;
// deal with potential signal(s) since the last time around...
if (Frames_signal)
zap_fieldstab();
// whoa either first time or thread/task mode change, (re)prime the pump...
if (Pseudo_row == PROC_XTRA) {
procs_refresh();
usleep(LIB_USLEEP);
putp(Cap_clr_scr);
} else
putp(Batch ? "\n\n" : Cap_home);
procs_refresh();
sysinfo_refresh(0);
Tree_idx = Pseudo_row = Msg_row = scrlins = 0;
summary_show();
Max_lines = (Screen_rows - Msg_row) - 1;
OFFw(w, INFINDS_xxx);
// one way or another, rid us of any prior frame's msg
if (VIZISw(w) && CHKw(w, View_SCROLL)) show_scroll();
else PUTT("%s%s", tg2(0, Msg_row), Cap_clr_eol);
if (!Rc.mode_altscr) {
// only 1 window to show so, piece o' cake
w->winlines = w->rc.maxtasks ? w->rc.maxtasks : Max_lines;
scrlins = window_show(w, Max_lines);
} else {
// maybe NO window is visible but assume, pieces o' cakes
for (i = 0 ; i < GROUPSMAX; i++) {
if (CHKw(&Winstk[i], Show_TASKON)) {
frame_hlp(i, Max_lines - scrlins);
scrlins += window_show(&Winstk[i], Max_lines - scrlins);
}
if (Max_lines <= scrlins) break;
}
}
/* clear to end-of-screen - critical if last window is 'idleps off'
(main loop must iterate such that we're always called before sleep) */
if (scrlins < Max_lines) {
putp(Cap_nl_clreos);
PSU_CLREOS(Pseudo_row);
}
fflush(stdout);
/* we'll deem any terminal not supporting tgoto as dumb and disable
the normal non-interactive output optimization... */
if (!Cap_can_goto) PSU_CLREOS(0);
/* lastly, check auto-sized width needs for the next iteration */
if (AUTOX_MODE && Autox_found)
widths_resize();
} // end: frame_make
/*
* duh... */
int main (int dont_care_argc, char **argv) {
(void)dont_care_argc;
before(*argv);
// +-------------+
wins_stage_1(); // top (sic) slice
configs_read(); // > spread etc, <
parse_args(&argv[1]); // > lean stuff, <
whack_terminal(); // > onions etc. <
wins_stage_2(); // as bottom slice
// +-------------+
for (;;) {
struct timespec ts;
frame_make();
if (0 < Loops) --Loops;
if (!Loops) bye_bye(NULL);
ts.tv_sec = Rc.delay_time;
ts.tv_nsec = (Rc.delay_time - (int)Rc.delay_time) * 1000000000;
if (Batch)
pselect(0, NULL, NULL, NULL, &ts, NULL);
else {
if (ioa(&ts))
do_key(iokey(1));
}
/* note: that above ioa routine exists to consolidate all logic
which is susceptible to signal interrupt and must then
produce a screen refresh. in this main loop frame_make
assumes responsibility for such refreshes. other logic
in contact with users must deal more obliquely with an
interrupt/refresh (hint: Frames_signal + return code)!
(everything is perfectly justified plus right margins)
(are completely filled, but of course it must be luck)
*/
}
return 0;
} // end: main
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