Function DangerousOperationThread

be/src/kudu/util/debug-util-test.cc:334–367

                                           MALLOC_AND_FREE));

void DangerousOperationThread(DangerousOp op, CountDownLatch* l) {
  while (l->count()) {
    switch (op) {
      case DLOPEN_AND_CLOSE: {
        // Check races against dlopen/dlclose.
        void* v = dlopen("libc.so.6", RTLD_LAZY);
        CHECK(v);
        dlclose(v);
        break;
      }

      case DL_ITERATE_PHDR: {
        // Check for races against dl_iterate_phdr.
        dl_iterate_phdr(&DoNothingDlCallback, nullptr);
        break;
      }

      case GET_STACK_TRACE: {
        // Check for reentrancy issues
        GetStackTrace();
        break;
      }

      case MALLOC_AND_FREE: {
        // Check large allocations in tcmalloc.
        volatile char* x = new char[1024 * 1024 * 2];
        delete[] x;
        break;
      }
      default:
        LOG(FATAL) << "unknown op";
    }
  }
}

// Starts a thread performing dangerous operations and then gathers
// its stack trace in a loop trying to trigger races.