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lib/core: Silence internally used signals

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We use SIGTERM to kill off child processes. We use it a lot. Reporting
everytime we use it is just spam. Treat the similar user signals
(SIGINT, SIGQUIT and the should-never-have-been SIGPIPE) similarly to
reduce noise.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Thomas Wood <thomas.wood@intel.com>
This commit is contained in:
Chris Wilson 2015-03-19 08:29:51 +00:00
parent 559987fc01
commit 2fa35c7316
1 changed files with 11 additions and 4 deletions
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15
lib/igt_core.c
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@ -1304,9 +1304,12 @@ static igt_exit_handler_t exit_handler_fn[MAX_EXIT_HANDLERS];
static bool exit_handler_disabled;
static sigset_t saved_sig_mask;
#define SIGDEF(x) { x, #x, sizeof(#x) - 1 }
#define SILENT(x) { x, NULL, 0 }
static const struct { int number; const char *name; size_t name_len; } handled_signals[] =
{ SIGDEF(SIGINT), SIGDEF(SIGHUP), SIGDEF(SIGTERM), SIGDEF(SIGQUIT),
SIGDEF(SIGPIPE), SIGDEF(SIGABRT), SIGDEF(SIGSEGV), SIGDEF(SIGBUS) };
{ SILENT(SIGINT), SILENT(SIGHUP), SILENT(SIGTERM), SILENT(SIGQUIT),
SILENT(SIGPIPE), SIGDEF(SIGABRT), SIGDEF(SIGSEGV), SIGDEF(SIGBUS) };
#undef SILENT
#undef SIGDEF
static int install_sig_handler(int sig_num, sighandler_t handler)
{
@ -1364,13 +1367,17 @@ static void fatal_sig_handler(int sig)
restore_all_sig_handler();
for (i = 0; i < ARRAY_SIZE(handled_signals); i++) {
if (handled_signals[i].number == sig) {
if (handled_signals[i].number != sig)
continue;
if (handled_signals[i].name_len) {
write(STDERR_FILENO, "Received signal ", 16);
write(STDERR_FILENO, handled_signals[i].name,
handled_signals[i].name_len);
write(STDERR_FILENO, ".\n", 2);
break;
}
break;
}
/*