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top: kill/nice provide for a default pid

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As an aid to the above 2 commands, and as a prelude to
an upcoming 'inspect other output' capability, the act
of selecting a process for either has been simplified.

Positioning a task as the first one displayed, via the
up/down arrow keys, will now establish it as a default
selection for the appropriate command.  Thus, that pid
will then be incorporated in a subsequent input prompt.

Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit is contained in:
Jim Warner
2012-11-25 00:00:03 -05:00
committed by Craig Small
parent 4dfb01aa37
commit 39f4067c66
3 changed files with 24 additions and 17 deletions
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35
top/top.c
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@ -1068,17 +1068,20 @@ static float get_float (const char *prompt) {
} // 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;
if (!(*(line = linein(prompt)))) return INT_MIN;
if (!(*(line = linein(prompt)))) return GET_INTNONE;
// note: we've got to allow negative ints (renice)
if (strcspn(line, "-+0123456789")) {
show_msg(N_txt(BAD_integers_txt));
return INT_MIN;
return GET_INT_BAD;
}
sscanf(line, "%d", &n);
return n;
@ -3132,10 +3135,10 @@ static void keys_global (int ch) {
if (Secure_mode) {
show_msg(N_txt(NOT_onsecure_txt));
} else {
int pid, sig = SIGTERM;
char *str;
if (-1 < (pid = get_int(N_txt(GET_pid2kill_txt)))) {
str = linein(fmtmk(N_fmt(GET_sigs_num_fmt), pid, SIGTERM));
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 = linein(fmtmk(N_fmt(GET_sigs_num_fmt), pid, SIGTERM));
if (0 > pid) pid = def;
if (*str) sig = signal_name_to_number(str);
if (0 < sig && kill(pid, sig))
show_msg(fmtmk(N_fmt(FAIL_signals_fmt)
@ -3148,18 +3151,22 @@ static void keys_global (int ch) {
if (Secure_mode)
show_msg(N_txt(NOT_onsecure_txt));
else {
int val, pid;
if (-1 < (pid = get_int(N_txt(GET_pid2nice_txt)))
&& INT_MIN < (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)));
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 (-1 < wide) Rc.fixed_widest = wide;
else if (INT_MIN < wide) Rc.fixed_widest = -1;
if (GET_INTNONE < wide) {
if (-1 < wide) Rc.fixed_widest = wide;
else if (INT_MIN < wide) Rc.fixed_widest = -1;
}
}
break;
case 'Z':