39 lines · cpp
1// RUN: %clangxx_tsan -O1 %s -o %t && %env_tsan_opts=atexit_sleep_ms=50 %run %t 2>&1 | FileCheck %s2#include "test.h"3#include <errno.h>4#include <sys/types.h>5#include <sys/wait.h>6 7int counter;8 9static void *incrementer(void *p) {10 for (;;)11 __sync_fetch_and_add(&counter, 1);12 return 0;13}14 15int 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: // parent22 while (wait(0) < 0) {}23 fprintf(stderr, ".");24 break;25 case 0: // child26 __sync_fetch_and_add(&counter, 1);27 exit(0);28 break;29 case -1: // error30 fprintf(stderr, "failed to fork (%d)\n", errno);31 exit(1);32 }33 }34 fprintf(stderr, "OK\n");35}36 37// CHECK: OK38 39