procps/oldtop.h

/*
 * top.h header file 1996/05/18, 
 *
 * function prototypes, global data definitions and string constants.
 */

static proc_t** readproctab2(int flags, proc_t** tab, ...);
static void parse_options(char *Options, int secure);
static void get_options(void);
static void error_end(int rno);
static void end(int signo);
static void stop(int signo);
static void window_size(int signo);
static int make_header(void);
static char *getstr(void);
static int getsig(void);
static float getfloat(void);
static int time_sort(proc_t **P, proc_t **Q);
static int pcpu_sort(proc_t **P, proc_t **Q);
static int mem_sort(proc_t **P, proc_t **Q);
static int age_sort(proc_t **P, proc_t **Q);
static void show_fields(void);
static void change_order(void);
static void change_fields(void);
static void show_task_info(proc_t *task);
static void show_procs(void);
static float get_elapsed_time(void);
static void show_meminfo(void);
static void do_stats(proc_t** p, float elapsed_time, int pass);
static void do_key(char c);


/* configurable field display support */

static int pflags[30];
static int Numfields;


	/* Name of the config file (in $HOME)  */
#ifndef RCFILE
#define RCFILE		".toprc"
#endif

#ifndef SYS_TOPRC
#define SYS_TOPRC	"/etc/toprc"
#endif

#define MAXLINES 2048
#define MAXNAMELEN 1024

/* this is what procps top does by default, so let's do this, if nothing is
 * specified
 */
#ifndef DEFAULT_SHOW
/*                       0         1         2         3 */
/*                       0123456789012345678901234567890 */
#define DEFAULT_SHOW    "AbcDgHIjklMnoTP|qrsuzyV{EFWX"
#endif
static char Fields[256] = "";


/* This structure stores some critical information from one frame to
   the next. mostly used for sorting. Added cumulative and resident fields. */
struct save_hist {
    int ticks;
    int pid;
    int pcpu;
    int utime;
    int stime;
};

	/* The original terminal attributes. */
static struct termios Savetty;
	/* The new terminal attributes. */
static struct termios Rawtty;
	/* Cached termcap entries. */
static char *cm, *cl, *top_clrtobot, *top_clrtoeol, *ho, *md, *me, *mr;
	/* Current window size.  Note that it is legal to set Display_procs
	   larger than can fit; if the window is later resized, all will be ok.
	   In other words: Display_procs is the specified max number of
	   processes to display (zero for infinite), and Maxlines is the actual
	   number. */
static int Lines, Cols, Maxlines, Display_procs;
	/* Maximum length to display of the command line of a process. */
static unsigned Maxcmd;

	/* Controls how long we sleep between screen updates.  Accurate to
	   microseconds. */
static float Sleeptime = 5;
	/* for opening/closing the system map */
static int psdbsucc = 0;
	/* Mode flags. */
static int Irixmode = 1;
static int Secure = 0;
static int Cumulative = 0;
static int Noidle = 0;

static int CPU_states = 0;
static char CurrUser[BUFSIZ];

static int CL_pg_shift = (PAGE_SHIFT - 10);
static int CL_wchan_nout = -1;

static int show_stats = 1;    /* show status summary */
static int show_memory = 1;   /* show memory summary */
static int show_loadav = 1;   /* show load average and uptime */
static int show_cmd = 1;      /* show command name instead of commandline */

static pid_t monpids[520]; /* randomly chosen value */
static const int monpids_max = sizeof(monpids)/sizeof(pid_t);
static int monpids_index = 0;

static int Loops = -1;	       /* number of iterations. -1 loops forever */
static int Batch = 0;         /* batch mode. Collect no input, dumb output */

/* sorting order: cpu%, mem, time (cumulative, if in cumulative mode) */
enum {
    S_PCPU, S_MEM, S_TIME, S_AGE, S_NONE
};
/* default sorting by CPU% */ 
static int sort_type = S_PCPU;

/* flags for each possible field. At the moment up to 30 are supported */
enum {
    P_PID, P_PPID, P_EUID, P_EUSER,
    P_PCPU, P_PMEM, P_TTY, P_PRI,
    P_NICE, P_PAGEIN, P_TSIZ, P_DSIZ,
    P_SIZE, P_TRS, P_SWAP, P_SHARE,
    P_A, P_WP, P_DT, P_RSS,
    P_WCHAN, P_STAT, P_TIME, P_COMMAND,
    P_LCPU, P_FLAGS, P_END
};
/* corresponding headers */
static char *headers[] =
{
    "  PID ", " PPID ", " UID ",
    "USER     ", "%CPU ", "%MEM ",
    "TTY      ", "PRI ", " NI ",
    "PAGEIN ", "TSIZE ", "DSIZE ",
    " SIZE ", " TRS ", "SWAP ",
    "SHARE ", "  A ", " WP ",
    "  D ", " RSS ", "WCHAN     ",
    "STAT ", "  TIME ", "COMMAND",
    "LC ",
    "   FLAGS "
};
/* corresponding field desciptions */
static char *headers2[] =
{
    "Process Id", "Parent Process Id", "User Id",
    "User Name", "CPU Usage", "Memory Usage",
    "Controlling tty", "Priority", "Nice Value",
    "Page Fault Count", "Code Size (kb)", "Data+Stack Size (kb)",
    "Virtual Image Size (kb)", "Resident Text Size (kb)", "Swapped kb",
    "Shared Pages (kb)", "Accessed Page count", "Write Protected Pages",
    "Dirty Pages", "Resident Set Size (kb)", "Sleeping in Function",
    "Process Status", "CPU Time", "Command",
    "Last used CPU (expect this to change regularly)",
    "Task Flags (see linux/sched.h)"
};

	/* The header printed at the top of the process list.*/
static char Header[MAXLINES];

	/* The response to the interactive 'h' command. */
#define HELP_SCREEN "\
Interactive commands are:\n\
\n\
space\tUpdate display\n\
^L\tRedraw the screen\n\
fF\tadd and remove fields\n\
oO\tChange order of displayed fields\n\
h or ?\tPrint this list\n\
S\tToggle cumulative mode\n\
i\tToggle display of idle proceses\n\
I\tToggle between Irix and Solaris views (SMP-only)\n\
c\tToggle display of command name/line\n\
l\tToggle display of load average\n\
m\tToggle display of memory information\n\
t\tToggle display of summary information\n\
k\tKill a task (with any signal)\n\
r\tRenice a task\n\
N\tSort by pid (Numerically)\n\
A\tSort by age\n\
P\tSort by CPU usage\n\
M\tSort by resident memory usage\n\
T\tSort by time / cumulative time\n\
u\tShow only a specific user\n\
n or #\tSet the number of process to show\n\
s\tSet the delay in seconds between updates\n\
W\tWrite configuration file ~/.toprc\n\
q\tQuit"
#define SECURE_HELP_SCREEN "\
Interactive commands available in secure mode are:\n\
\n\
space\tUpdate display\n\
^L\tRedraw the screen\n\
fF\tadd and remove fields\n\
h or ?\tPrint this list\n\
S\tToggle cumulative mode\n\
i\tToggle display of idle proceses\n\
c\tToggle display of command name/line\n\
l\tToggle display of load average\n\
m\tToggle display of memory information\n\
t\tToggle display of summary information\n\
n or #\tSet the number of process to show\n\
u\tShow only a specific user\n\
oO\tChange order of displayed fields\n\
W\tWrite configuration file ~/.toprc\n\
q\tQuit"

	/* Number of lines needed to display the header information. */
static int header_lines;

/* ############## Some Macro definitions for screen handling ######### */
	/* String to use in error messages. */
#define PROGNAME "top"
	/* Clear the screen. */
#define clear_screen() \
	    printf("%s", cl)
	/* Show an error in the context of the spiffy full-screen display. */
#define SHOWMESSAGE(x) do { 			\
	    printf("%s%s%s%s", tgoto(cm, 0, header_lines-2), top_clrtoeol,md,mr);	\
	    printf x;					\
	    printf ("%s",me);                           \
	    fflush(stdout);				\
	    sleep(2);					\
	} while (0)