52 lines · cpp
1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s2#include "java.h"3 4jptr varaddr;5jptr lockaddr;6 7void *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 fprintf(stderr, "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 26int 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 fprintf(stderr, "DONE\n");46 return __tsan_java_fini();47}48 49// CHECK: WARNING: ThreadSanitizer: data race50// CHECK-NOT: FAILED51// CHECK: DONE52