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Add a SIGALRM handler that does nothing

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This will be part of a future signal torture-test, to ensure
we are handling EINTR correctly
This commit is contained in:
ridiculousfish 2017-01-21 14:07:54 -08:00
parent 7e3db843cd
commit d8a6c0a91b
1 changed files with 14 additions and 0 deletions
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14
src/signal.cpp
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@ -242,6 +242,15 @@ static void handle_chld(int sig, siginfo_t *info, void *context) {
default_handler(sig, info, context);
}
// We have a sigalarm handler that does nothing
// This is used in the signal torture test, to verify
// that we behave correctly when receiving lots of irrelevant signals
static void handle_sigalarm(int sig, siginfo_t *info, void *context) {
UNUSED(sig);
UNUSED(info);
UNUSED(context);
}
void signal_reset_handlers() {
int i;
@ -285,6 +294,11 @@ static void set_interactive_handlers() {
act.sa_flags = SA_SIGINFO;
sigaction(SIGHUP, &act, 0);
// SIGALARM as part of our signal torture test
act.sa_sigaction = &handle_sigalarm;
act.sa_flags = SA_SIGINFO;
sigaction(SIGALRM, &act, 0);
#ifdef SIGWINCH
act.sa_sigaction = &handle_winch;
act.sa_flags = SA_SIGINFO;