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Swap settimer and sigaction calls to avoid SIGPROF

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Fixes #2760.
This commit is contained in:
Przemek Kryger 2020-03-24 10:08:42 +00:00
parent 749148f1ac
commit 08347d7a16
1 changed files with 7 additions and 5 deletions
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12
googletest/test/googletest-death-test-test.cc
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@ -391,17 +391,19 @@ void SigprofAction(int, siginfo_t*, void*) { /* no op */ }
// Sets SIGPROF action and ITIMER_PROF timer (interval: 1ms). // Sets SIGPROF action and ITIMER_PROF timer (interval: 1ms).
void SetSigprofActionAndTimer() { void SetSigprofActionAndTimer() {
struct itimerval timer;
timer.it_interval.tv_sec = 0;
timer.it_interval.tv_usec = 1;
timer.it_value = timer.it_interval;
ASSERT_EQ(0, setitimer(ITIMER_PROF, &timer, nullptr));
struct sigaction signal_action; struct sigaction signal_action;
memset(&signal_action, 0, sizeof(signal_action)); memset(&signal_action, 0, sizeof(signal_action));
sigemptyset(&signal_action.sa_mask); sigemptyset(&signal_action.sa_mask);
signal_action.sa_sigaction = SigprofAction; signal_action.sa_sigaction = SigprofAction;
signal_action.sa_flags = SA_RESTART | SA_SIGINFO; signal_action.sa_flags = SA_RESTART | SA_SIGINFO;
ASSERT_EQ(0, sigaction(SIGPROF, &signal_action, nullptr)); ASSERT_EQ(0, sigaction(SIGPROF, &signal_action, nullptr));
// timer comes second, to avoid SIGPROF premature delivery, as suggested at
// https://www.gnu.org/software/libc/manual/html_node/Setting-an-Alarm.html
struct itimerval timer;
timer.it_interval.tv_sec = 0;
timer.it_interval.tv_usec = 1;
timer.it_value = timer.it_interval;
ASSERT_EQ(0, setitimer(ITIMER_PROF, &timer, nullptr));
} }
// Disables ITIMER_PROF timer and ignores SIGPROF signal. // Disables ITIMER_PROF timer and ignores SIGPROF signal.