57 lines
1.1 KiB
C++
57 lines
1.1 KiB
C++
// RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
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// UNSUPPORTED: darwin
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#include "test.h"
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#include <signal.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <errno.h>
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volatile int X;
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static void handler(int sig) {
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(void)sig;
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if (X != 42)
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printf("bad");
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}
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static void* thr(void *p) {
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for (int i = 0; i != 1000; i++)
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usleep(1000); // process signals
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return 0;
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}
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int main() {
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const int kThreads = 10;
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pthread_t th[kThreads];
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for (int i = 0; i < kThreads; i++)
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pthread_create(&th[i], 0, thr, 0);
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X = 42;
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struct sigaction act = {};
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act.sa_handler = &handler;
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if (sigaction(SIGPROF, &act, 0)) {
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perror("sigaction");
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exit(1);
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}
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itimerval t;
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t.it_value.tv_sec = 0;
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t.it_value.tv_usec = 10;
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t.it_interval = t.it_value;
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if (setitimer(ITIMER_PROF, &t, 0)) {
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perror("setitimer");
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exit(1);
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}
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for (int i = 0; i < kThreads; i++)
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pthread_join(th[i], 0);
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fprintf(stderr, "DONE\n");
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return 0;
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}
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// CHECK-NOT: WARNING: ThreadSanitizer:
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// CHECK: DONE
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// CHECK-NOT: WARNING: ThreadSanitizer:
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