1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s 2 #include "java.h" 3 4 jptr varaddr; 5 jptr lockaddr; 6 7 void *Thread(void *p) { 8 __tsan_java_mutex_lock(lockaddr); 9 __tsan_java_mutex_lock(lockaddr); 10 __tsan_java_mutex_lock(lockaddr); 11 int rec = __tsan_java_mutex_unlock_rec(lockaddr); 12 if (rec != 3) { 13 printf("FAILED 0 rec=%d\n", rec); 14 exit(1); 15 } 16 *(int*)varaddr = 42; 17 barrier_wait(&barrier); 18 barrier_wait(&barrier); 19 __tsan_java_mutex_lock_rec(lockaddr, rec); 20 __tsan_java_mutex_unlock(lockaddr); 21 __tsan_java_mutex_unlock(lockaddr); 22 __tsan_java_mutex_unlock(lockaddr); 23 return 0; 24 } 25 26 int main() { 27 barrier_init(&barrier, 2); 28 int const kHeapSize = 1024 * 1024; 29 jptr jheap = (jptr)malloc(kHeapSize + 8) + 8; 30 __tsan_java_init(jheap, kHeapSize); 31 const int kBlockSize = 16; 32 __tsan_java_alloc(jheap, kBlockSize); 33 varaddr = jheap; 34 *(int*)varaddr = 0; 35 lockaddr = jheap + 8; 36 pthread_t th; 37 pthread_create(&th, 0, Thread, 0); 38 barrier_wait(&barrier); 39 __tsan_java_mutex_lock(lockaddr); 40 *(int*)varaddr = 43; 41 __tsan_java_mutex_unlock(lockaddr); 42 barrier_wait(&barrier); 43 pthread_join(th, 0); 44 __tsan_java_free(jheap, kBlockSize); 45 printf("DONE\n"); 46 return __tsan_java_fini(); 47 } 48 49 // CHECK: WARNING: ThreadSanitizer: data race 50 // CHECK-NOT: FAILED 51 // CHECK: DONE 52
