54 lines · cpp
1// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s2// UNSUPPORTED: darwin3#include <pthread.h>4#include <stdio.h>5#include <stdlib.h>6#include <signal.h>7#include <sys/types.h>8#include <sys/time.h>9#include <unistd.h>10#include <errno.h>11 12volatile int X;13 14static void handler(int sig) {15 (void)sig;16 if (X != 0)17 printf("bad");18}19 20static void* thr(void *p) {21 return 0;22}23 24int main() {25 struct sigaction act = {};26 act.sa_handler = &handler;27 if (sigaction(SIGPROF, &act, 0)) {28 perror("sigaction");29 exit(1);30 }31 32 itimerval t;33 t.it_value.tv_sec = 0;34 t.it_value.tv_usec = 10;35 t.it_interval = t.it_value;36 if (setitimer(ITIMER_PROF, &t, 0)) {37 perror("setitimer");38 exit(1);39 }40 41 for (int i = 0; i < 10000; i++) {42 pthread_t th;43 pthread_create(&th, 0, thr, 0);44 pthread_join(th, 0);45 }46 47 fprintf(stderr, "DONE\n");48 return 0;49}50 51// CHECK-NOT: WARNING: ThreadSanitizer:52// CHECK: DONE53// CHECK-NOT: WARNING: ThreadSanitizer:54