compiler-rt/test/tsan/java_lock_move.cpp

   1 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
   2 #include "java.h"
   3
   4 jptr varaddr;
   5 jptr lockaddr;
   6 jptr varaddr2;
   7 jptr lockaddr2;
   8
   9 void *Thread(void *p) {
  10   barrier_wait(&barrier);
  11   __tsan_java_mutex_lock(lockaddr2);
  12   *(int*)varaddr2 = 42;
  13   __tsan_java_mutex_unlock(lockaddr2);
  14   return 0;
  15 }
  16
  17 int main() {
  18   barrier_init(&barrier, 2);
  19   int const kHeapSize = 1024 * 1024;
  20   jptr jheap = (jptr)malloc(kHeapSize + 8) + 8;
  21   __tsan_java_init(jheap, kHeapSize);
  22   const int kBlockSize = 64;
  23   int const kMove = 1024;
  24   __tsan_java_alloc(jheap, kBlockSize);
  25   varaddr = jheap;
  26   lockaddr = jheap + 46;
  27   varaddr2 = varaddr + kMove;
  28   lockaddr2 = lockaddr + kMove;
  29   pthread_t th;
  30   pthread_create(&th, 0, Thread, 0);
  31   __tsan_java_mutex_lock(lockaddr);
  32   *(int*)varaddr = 43;
  33   __tsan_java_mutex_unlock(lockaddr);
  34   __tsan_java_move(varaddr, varaddr2, kBlockSize);
  35   barrier_wait(&barrier);
  36   pthread_join(th, 0);
  37   __tsan_java_free(varaddr2, kBlockSize);
  38   fprintf(stderr, "DONE\n");
  39   return __tsan_java_fini();
  40 }
  41
  42 // CHECK-NOT: WARNING: ThreadSanitizer: data race
  43 // CHECK: DONE