1 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s 2 // UNSUPPORTED: darwin 3 #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 12 volatile int X; 13 14 static void handler(int sig) { 15 (void)sig; 16 if (X != 0) 17 printf("bad"); 18 } 19 20 static void* thr(void *p) { 21 return 0; 22 } 23 24 int 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: DONE 53 // CHECK-NOT: WARNING: ThreadSanitizer: 54
