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Real-time signals support (for kill command) 

SignalsPanel_new now fetches SIGRTMIN and SIGRTMAX and generates real-
time signals entries at runtime.

All signals between SIGRTMIN and SIGRTMAX are written in "SIGRTMIN+n"
notation, per discussion in pull request #551.

Signed-off-by: Kang-Che Sung <explorer09 @ gmail.com>
This commit is contained in:
Explorer09 2016-09-14 21:47:24 +08:00
parent 823481ae22
commit 0ce4835f95
1 changed files with 24 additions and 1 deletions
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25
SignalsPanel.c
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@ -31,13 +31,36 @@ Panel* SignalsPanel_new() {
Panel* this = Panel_new(1, 1, 1, 1, true, Class(ListItem), FunctionBar_newEnterEsc("Send ", "Cancel ")); Panel* this = Panel_new(1, 1, 1, 1, true, Class(ListItem), FunctionBar_newEnterEsc("Send ", "Cancel "));
const int defaultSignal = SIGTERM; const int defaultSignal = SIGTERM;
int defaultPosition = 15; int defaultPosition = 15;
for(unsigned int i = 0; i < Platform_numberOfSignals; i++) { unsigned int i;
for (i = 0; i < Platform_numberOfSignals; i++) {
Panel_set(this, i, (Object*) ListItem_new(Platform_signals[i].name, Platform_signals[i].number)); Panel_set(this, i, (Object*) ListItem_new(Platform_signals[i].name, Platform_signals[i].number));
// signal 15 is not always the 15th signal in the table // signal 15 is not always the 15th signal in the table
if (Platform_signals[i].number == defaultSignal) { if (Platform_signals[i].number == defaultSignal) {
defaultPosition = i; defaultPosition = i;
} }
} }
#if (defined(SIGRTMIN) && defined(SIGRTMAX))
// Real-time signals.
// SIGRTMIN and SIGRTMAX expand to libc internal functions and we have to
// grab their numbers at runtime.
static char buf[15]; // 15 == sizeof("xx SIGRTMIN+nn")
int rtmax;
for (int sig = SIGRTMIN; sig <= (rtmax = SIGRTMAX); i++, sig++) {
// Every signal between SIGRTMIN and SIGRTMAX are denoted in "SIGRTMIN+n"
// notation. This matches glibc's strsignal(3) behavior.
// We deviate from behaviors of Bash, ksh and Solaris intentionally.
if (sig == rtmax) {
snprintf(buf, 15, "%2d SIGRTMAX", sig);
} else {
int n = sig - SIGRTMIN;
snprintf(buf, 15, "%2d SIGRTMIN%+d", sig, n);
if (n == 0) {
buf[11] = '\0';
}
}
Panel_set(this, i, (Object*) ListItem_new(buf, sig));
}
#endif
Panel_setHeader(this, "Send signal:"); Panel_setHeader(this, "Send signal:");
Panel_setSelected(this, defaultPosition); Panel_setSelected(this, defaultPosition);
return this; return this;