1 // RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s 2 #include "java.h" 3 4 jptr varaddr; 5 jptr lockaddr; 6 Thread(void * p)7void *Thread(void *p) { 8 __tsan_java_mutex_lock(lockaddr); 9 *(int*)varaddr = 42; 10 __tsan_java_mutex_unlock(lockaddr); 11 return 0; 12 } 13 main()14int main() { 15 int const kHeapSize = 1024 * 1024; 16 void *jheap = malloc(kHeapSize); 17 __tsan_java_init((jptr)jheap, kHeapSize); 18 const int kBlockSize = 16; 19 __tsan_java_alloc((jptr)jheap, kBlockSize); 20 varaddr = (jptr)jheap; 21 lockaddr = (jptr)jheap + 8; 22 pthread_t th; 23 pthread_create(&th, 0, Thread, 0); 24 __tsan_java_mutex_lock(lockaddr); 25 *(int*)varaddr = 43; 26 __tsan_java_mutex_unlock(lockaddr); 27 pthread_join(th, 0); 28 __tsan_java_free((jptr)jheap, kBlockSize); 29 printf("OK\n"); 30 return __tsan_java_fini(); 31 } 32 33 // CHECK-NOT: WARNING: ThreadSanitizer: data race 34