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Update libcxx test to use timer_settime instead of setitimer #120354

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Update libcxx test to use timer_settime instead of setitimer #120354

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17 changes: 13 additions & 4 deletions libcxx/test/libcxx/thread/thread.threads/thread.thread.this/sleep_for.signals.pass.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,7 @@
#include <cstring> // for std::memset

#include <signal.h>
#include <time.h>
#include <sys/time.h>

#include "test_macros.h"
Expand All @@ -44,13 +45,21 @@ int main(int, char**)
ec = sigaction(SIGALRM, &action, nullptr);
assert(!ec);

struct itimerval it;
std::memset(&it, 0, sizeof(itimerval));
timer_t timer_id = 0;
struct sigevent _sev;
_sev.sigev_signo = SIGALRM;
_sev.sigev_notify = SIGEV_SIGNAL;
_sev.sigev_value.sival_ptr = &timer_id;
ec = timer_create(CLOCK_REALTIME, &_sev, &timer_id);
assert(!ec);

struct itimerspec it;
std::memset(&it, 0, sizeof(itimerspec));
it.it_value.tv_sec = 0;
it.it_value.tv_usec = 250000;
it.it_value.tv_nsec = 250000000;
// This will result in a SIGALRM getting fired resulting in the nanosleep
// inside sleep_for getting EINTR.
ec = setitimer(ITIMER_REAL, &it, nullptr);
ec = timer_settime(timer_id, 0, &it, nullptr);
assert(!ec);

typedef std::chrono::system_clock Clock;
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