58 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 __tsan_java_mutex_lock(lockaddr);9 __tsan_java_mutex_lock(lockaddr);10 *(int*)varaddr = 42;11 int rec = __tsan_java_mutex_unlock_rec(lockaddr);12 if (rec != 2) {13 fprintf(stderr, "FAILED 0 rec=%d\n", rec);14 exit(1);15 }16 barrier_wait(&barrier);17 barrier_wait(&barrier);18 __tsan_java_mutex_lock_rec(lockaddr, rec);19 if (*(int*)varaddr != 43) {20 fprintf(stderr, "FAILED 3 var=%d\n", *(int*)varaddr);21 exit(1);22 }23 __tsan_java_mutex_unlock(lockaddr);24 __tsan_java_mutex_unlock(lockaddr);25 return 0;26}27 28int main() {29 barrier_init(&barrier, 2);30 int const kHeapSize = 1024 * 1024;31 jptr jheap = (jptr)malloc(kHeapSize + 8) + 8;32 __tsan_java_init(jheap, kHeapSize);33 const int kBlockSize = 16;34 __tsan_java_alloc(jheap, kBlockSize);35 varaddr = jheap;36 *(int*)varaddr = 0;37 lockaddr = jheap + 8;38 pthread_t th;39 pthread_create(&th, 0, Thread, 0);40 barrier_wait(&barrier);41 __tsan_java_mutex_lock(lockaddr);42 if (*(int*)varaddr != 42) {43 fprintf(stderr, "FAILED 1 var=%d\n", *(int*)varaddr);44 exit(1);45 }46 *(int*)varaddr = 43;47 __tsan_java_mutex_unlock(lockaddr);48 barrier_wait(&barrier);49 pthread_join(th, 0);50 __tsan_java_free(jheap, kBlockSize);51 fprintf(stderr, "DONE\n");52 return __tsan_java_fini();53}54 55// CHECK-NOT: WARNING: ThreadSanitizer: data race56// CHECK-NOT: FAILED57// CHECK: DONE58