38 lines · cpp
1// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s2#include "java.h"3 4jptr varaddr;5jptr lockaddr;6 7void *Thread(void *p) {8 barrier_wait(&barrier);9 __tsan_java_mutex_read_lock(lockaddr);10 *(int*)varaddr = 42;11 __tsan_java_mutex_read_unlock(lockaddr);12 return 0;13}14 15int main() {16 barrier_init(&barrier, 2);17 int const kHeapSize = 1024 * 1024;18 jptr jheap = (jptr)malloc(kHeapSize + 8) + 8;19 __tsan_java_init(jheap, kHeapSize);20 const int kBlockSize = 16;21 __tsan_java_alloc(jheap, kBlockSize);22 varaddr = jheap;23 lockaddr = jheap + 8;24 pthread_t th;25 pthread_create(&th, 0, Thread, 0);26 __tsan_java_mutex_lock(lockaddr);27 *(int*)varaddr = 43;28 __tsan_java_mutex_unlock(lockaddr);29 barrier_wait(&barrier);30 pthread_join(th, 0);31 __tsan_java_free(jheap, kBlockSize);32 fprintf(stderr, "DONE\n");33 return __tsan_java_fini();34}35 36// CHECK-NOT: WARNING: ThreadSanitizer: data race37// CHECK: DONE38