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e777317227
Many systems (glibc<2.30, Bionic before 2019, musl, macOS, etc) do not have the function.
30 lines
703 B
C++
30 lines
703 B
C++
// RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
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// REQUIRES: glibc-2.30
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#include <pthread.h>
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#include <stdio.h>
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pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
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struct timespec ts = {0};
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void *tfunc(void *p) {
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if (!pthread_mutex_trylock(&m)) {
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puts("Second thread could not lock mutex");
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pthread_mutex_unlock(&m);
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}
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return p;
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}
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int main() {
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if (!pthread_mutex_clocklock(&m, CLOCK_REALTIME, &ts)) {
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pthread_t thr;
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pthread_create(&thr, 0, tfunc, 0);
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pthread_join(thr, 0);
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pthread_mutex_unlock(&m);
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} else
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puts("Failed to lock mutex");
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fprintf(stderr, "PASS\n");
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}
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// CHECK-NOT: WARNING: ThreadSanitizer: unlock of an unlocked mutex
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// CHECK: PASS
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