forked from OSchip/llvm-project
41 lines
887 B
C++
41 lines
887 B
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %env_tsan_opts=atexit_sleep_ms=0 %run %t 2>&1 | FileCheck %s
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#include "../test.h"
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#include <errno.h>
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#include <sched.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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long counter;
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static void *incrementer(void *arg) {
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for (;;)
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__sync_fetch_and_add(&counter, 1);
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return 0;
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}
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static int cloned(void *arg) {
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for (int i = 0; i < 1000; i++)
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__sync_fetch_and_add(&counter, 1);
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exit(0);
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return 0;
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}
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int main() {
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barrier_init(&barrier, 2);
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pthread_t th;
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pthread_create(&th, 0, incrementer, 0);
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for (int i = 0; i < 100; i++) {
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char stack[64 << 10] __attribute__((aligned(64)));
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int pid = clone(cloned, stack + sizeof(stack), SIGCHLD, 0);
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if (pid == -1) {
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fprintf(stderr, "failed to clone: %d\n", errno);
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exit(1);
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}
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while (wait(0) != pid) {
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}
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}
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fprintf(stderr, "DONE\n");
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}
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// CHECK: DONE
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