67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 66 2>&1 | FileCheck %s -check-prefix=CHECK-DIE
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// RUN: %clangxx_tsan -O1 %s -o %t && %env_tsan_opts=die_after_fork=0 %run %t 2>&1 | FileCheck %s -check-prefix=CHECK-NODIE
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#include "test.h"
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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static void *sleeper(void *p) {
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barrier_wait(&barrier);
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return 0;
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}
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static void *nop(void *p) {
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return 0;
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}
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int main(int argc, const char **argv) {
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barrier_init(&barrier, 3);
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const int kSleeperThreads = 2;
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barrier_init(&barrier, kSleeperThreads + 1);
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pthread_t th0[kSleeperThreads];
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for (int i = 0; i < kSleeperThreads; i++)
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pthread_create(&th0[i], 0, sleeper, 0);
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const int kNopThreads = 5;
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pthread_t th1[kNopThreads];
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for (int i = 0; i < kNopThreads; i++)
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pthread_create(&th1[i], 0, nop, 0);
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for (int i = 0; i < kNopThreads; i++)
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pthread_join(th1[i], 0);
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int pid = fork();
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if (pid < 0) {
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fprintf(stderr, "failed to fork (%d)\n", errno);
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exit(1);
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}
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if (pid == 0) {
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// child
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const int kChildThreads = 4;
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pthread_t th2[kChildThreads];
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for (int i = 0; i < kChildThreads; i++)
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pthread_create(&th2[i], 0, nop, 0);
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for (int i = 0; i < kChildThreads; i++)
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pthread_join(th2[i], 0);
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exit(0);
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return 0;
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}
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// parent
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int expect = argc > 1 ? atoi(argv[1]) : 0;
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int status = 0;
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while (waitpid(pid, &status, 0) != pid) {
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}
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if (!WIFEXITED(status) || WEXITSTATUS(status) != expect) {
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fprintf(stderr, "subprocess exited with %d, expected %d\n", status, expect);
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exit(1);
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}
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barrier_wait(&barrier);
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for (int i = 0; i < kSleeperThreads; i++)
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pthread_join(th0[i], 0);
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fprintf(stderr, "OK\n");
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return 0;
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}
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// CHECK-DIE: ThreadSanitizer: starting new threads after multi-threaded fork is not supported
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// CHECK-NODIE-NOT: ThreadSanitizer:
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// CHECK-NODIE: OK
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// CHECK-NODIE-NOT: ThreadSanitizer:
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