1 // RUN: %clangxx_tsan -O1 %s -o %t && %env_tsan_opts=atexit_sleep_ms=50 %run %t 2>&1 | FileCheck %s 2 #include "test.h" 3 #include <errno.h> 4 #include <sys/types.h> 5 #include <sys/wait.h> 6 7 int counter; 8 9 static void *incrementer(void *p) { 10 for (;;) 11 __sync_fetch_and_add(&counter, 1); 12 return 0; 13 } 14 15 int main() { 16 barrier_init(&barrier, 2); 17 pthread_t th1; 18 pthread_create(&th1, 0, incrementer, 0); 19 for (int i = 0; i < 10; i++) { 20 switch (fork()) { 21 default: // parent 22 while (wait(0) < 0) {} 23 fprintf(stderr, "."); 24 break; 25 case 0: // child 26 __sync_fetch_and_add(&counter, 1); 27 exit(0); 28 break; 29 case -1: // error 30 fprintf(stderr, "failed to fork (%d)\n", errno); 31 exit(1); 32 } 33 } 34 fprintf(stderr, "OK\n"); 35 } 36 37 // CHECK: OK 38 39
