| // RUN: %clang_tsan %s -o %t |
| // RUN: %run %t 2>&1 | FileCheck %s --implicit-check-not='ThreadSanitizer' |
| |
| #include <os/lock.h> |
| #include <pthread.h> |
| #include <stdio.h> |
| |
| long global_variable; |
| os_unfair_lock lock = OS_UNFAIR_LOCK_INIT; |
| |
| void *Thread(void *a) { |
| os_unfair_lock_lock(&lock); |
| global_variable++; |
| os_unfair_lock_unlock(&lock); |
| return NULL; |
| } |
| |
| int main() { |
| pthread_t t1, t2; |
| global_variable = 0; |
| pthread_create(&t1, NULL, Thread, NULL); |
| pthread_create(&t2, NULL, Thread, NULL); |
| pthread_join(t1, NULL); |
| pthread_join(t2, NULL); |
| fprintf(stderr, "global_variable = %ld\n", global_variable); |
| } |
| |
| // CHECK: global_variable = 2 |
