55 lines
1.1 KiB
C++
55 lines
1.1 KiB
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
|
|
#include "test.h"
|
|
|
|
int fds[2];
|
|
|
|
void *ThreadCreatePipe(void *x) {
|
|
pipe(fds);
|
|
return NULL;
|
|
}
|
|
|
|
void *ThreadDummy(void *x) {
|
|
return NULL;
|
|
}
|
|
|
|
void *ThreadWrite(void *x) {
|
|
write(fds[1], "a", 1);
|
|
barrier_wait(&barrier);
|
|
return NULL;
|
|
}
|
|
|
|
void *ThreadClose(void *x) {
|
|
barrier_wait(&barrier);
|
|
close(fds[0]);
|
|
close(fds[1]);
|
|
return NULL;
|
|
}
|
|
|
|
int main() {
|
|
barrier_init(&barrier, 2);
|
|
pthread_t t_create;
|
|
pthread_create(&t_create, NULL, ThreadCreatePipe, NULL);
|
|
pthread_join(t_create, NULL);
|
|
|
|
for (int i = 0; i < 100; i++) {
|
|
pthread_t t_dummy;
|
|
pthread_create(&t_dummy, NULL, ThreadDummy, NULL);
|
|
pthread_join(t_dummy, NULL);
|
|
}
|
|
|
|
pthread_t t[2];
|
|
pthread_create(&t[0], NULL, ThreadWrite, NULL);
|
|
pthread_create(&t[1], NULL, ThreadClose, NULL);
|
|
pthread_join(t[0], NULL);
|
|
pthread_join(t[1], NULL);
|
|
}
|
|
|
|
// CHECK-NOT: CHECK failed
|
|
// CHECK: WARNING: ThreadSanitizer: data race
|
|
// CHECK: Write of size 8
|
|
// CHECK: #0 close
|
|
// CHECK: #1 ThreadClose
|
|
// CHECK: Previous read of size 8
|
|
// CHECK: #0 write
|
|
// CHECK: #1 ThreadWrite
|