28 lines
648 B
C
28 lines
648 B
C
// 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
|