You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
82 lines
2.0 KiB
82 lines
2.0 KiB
// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
|
|
#include "test.h"
|
|
|
|
const int kTestCount = 4;
|
|
typedef long long T;
|
|
T atomics[kTestCount * 2];
|
|
|
|
void Test(int test, T *p, bool main_thread) {
|
|
volatile T sink;
|
|
if (test == 0) {
|
|
if (main_thread)
|
|
__atomic_fetch_add(p, 1, __ATOMIC_RELAXED);
|
|
else
|
|
*p = 42;
|
|
} else if (test == 1) {
|
|
if (main_thread)
|
|
__atomic_fetch_add(p, 1, __ATOMIC_RELAXED);
|
|
else
|
|
sink = *p;
|
|
} else if (test == 2) {
|
|
if (main_thread)
|
|
sink = __atomic_load_n(p, __ATOMIC_SEQ_CST);
|
|
else
|
|
*p = 42;
|
|
} else if (test == 3) {
|
|
if (main_thread)
|
|
__atomic_store_n(p, 1, __ATOMIC_SEQ_CST);
|
|
else
|
|
sink = *p;
|
|
}
|
|
}
|
|
|
|
void *Thread(void *p) {
|
|
for (int i = 0; i < kTestCount; i++) {
|
|
Test(i, &atomics[i], false);
|
|
}
|
|
barrier_wait(&barrier);
|
|
barrier_wait(&barrier);
|
|
for (int i = 0; i < kTestCount; i++) {
|
|
fprintf(stderr, "Test %d reverse\n", i);
|
|
Test(i, &atomics[kTestCount + i], false);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int main() {
|
|
barrier_init(&barrier, 2);
|
|
pthread_t t;
|
|
pthread_create(&t, 0, Thread, 0);
|
|
barrier_wait(&barrier);
|
|
for (int i = 0; i < kTestCount; i++) {
|
|
fprintf(stderr, "Test %d\n", i);
|
|
Test(i, &atomics[i], true);
|
|
}
|
|
for (int i = 0; i < kTestCount; i++) {
|
|
Test(i, &atomics[kTestCount + i], true);
|
|
}
|
|
barrier_wait(&barrier);
|
|
pthread_join(t, 0);
|
|
}
|
|
|
|
// CHECK: Test 0
|
|
// CHECK: ThreadSanitizer: data race
|
|
// CHECK-NOT: SUMMARY{{.*}}tsan_interface_atomic
|
|
// CHECK: Test 1
|
|
// CHECK: ThreadSanitizer: data race
|
|
// CHECK-NOT: SUMMARY{{.*}}tsan_interface_atomic
|
|
// CHECK: Test 2
|
|
// CHECK: ThreadSanitizer: data race
|
|
// CHECK-NOT: SUMMARY{{.*}}tsan_interface_atomic
|
|
// CHECK: Test 3
|
|
// CHECK: ThreadSanitizer: data race
|
|
// CHECK-NOT: SUMMARY{{.*}}tsan_interface_atomic
|
|
// CHECK: Test 0 reverse
|
|
// CHECK: ThreadSanitizer: data race
|
|
// CHECK: Test 1 reverse
|
|
// CHECK: ThreadSanitizer: data race
|
|
// CHECK: Test 2 reverse
|
|
// CHECK: ThreadSanitizer: data race
|
|
// CHECK: Test 3 reverse
|
|
// CHECK: ThreadSanitizer: data race
|