41 lines · cpp
1// RUN: %clangxx_tsan -O1 %s -o %t && %env_tsan_opts=atexit_sleep_ms=0 %run %t 2>&1 | FileCheck %s2#include "../test.h"3#include <errno.h>4#include <sched.h>5#include <sys/types.h>6#include <sys/wait.h>7 8long counter;9 10static void *incrementer(void *arg) {11 for (;;)12 __sync_fetch_and_add(&counter, 1);13 return 0;14}15 16static int cloned(void *arg) {17 for (int i = 0; i < 1000; i++)18 __sync_fetch_and_add(&counter, 1);19 exit(0);20 return 0;21}22 23int main() {24 barrier_init(&barrier, 2);25 pthread_t th;26 pthread_create(&th, 0, incrementer, 0);27 for (int i = 0; i < 100; i++) {28 char stack[64 << 10] __attribute__((aligned(64)));29 int pid = clone(cloned, stack + sizeof(stack), SIGCHLD, 0);30 if (pid == -1) {31 fprintf(stderr, "failed to clone: %d\n", errno);32 exit(1);33 }34 while (wait(0) != pid) {35 }36 }37 fprintf(stderr, "DONE\n");38}39 40// CHECK: DONE41