test/tsan/java_lock.cc

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