From 0ce4835f95a6dc358710c5c16723295a8370d4f5 Mon Sep 17 00:00:00 2001 From: Explorer09 Date: Wed, 14 Sep 2016 21:47:24 +0800 Subject: 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 --- SignalsPanel.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) (limited to 'SignalsPanel.c') diff --git a/SignalsPanel.c b/SignalsPanel.c index 9816a848..22fefa62 100644 --- a/SignalsPanel.c +++ b/SignalsPanel.c @@ -31,13 +31,36 @@ Panel* SignalsPanel_new() { Panel* this = Panel_new(1, 1, 1, 1, true, Class(ListItem), FunctionBar_newEnterEsc("Send ", "Cancel ")); const int defaultSignal = SIGTERM; 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)); // signal 15 is not always the 15th signal in the table if (Platform_signals[i].number == defaultSignal) { 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_setSelected(this, defaultPosition); return this; -- cgit v1.2.3