bc84b2857f
Clone does not exist on Mac. There are chances it will break on other OSes. Enable it incrementally starting with Linux only, other OSes can enable it later as needed. Reviewed By: melver, thakis Differential Revision: https://reviews.llvm.org/D113693
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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