1// Copyright (c) 2011 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef BASE_TEST_THREAD_TEST_HELPER_H_ 6#define BASE_TEST_THREAD_TEST_HELPER_H_ 7 8#include "base/compiler_specific.h" 9#include "base/memory/ref_counted.h" 10#include "base/message_loop/message_loop_proxy.h" 11#include "base/synchronization/waitable_event.h" 12 13namespace base { 14 15// Helper class that executes code on a given thread while blocking on the 16// invoking thread. To use, derive from this class and overwrite RunTest. An 17// alternative use of this class is to use it directly. It will then block 18// until all pending tasks on a given thread have been executed. 19class ThreadTestHelper : public RefCountedThreadSafe<ThreadTestHelper> { 20 public: 21 explicit ThreadTestHelper( 22 const scoped_refptr<MessageLoopProxy>& target_thread); 23 24 // True if RunTest() was successfully executed on the target thread. 25 bool Run() WARN_UNUSED_RESULT; 26 27 virtual void RunTest(); 28 29 protected: 30 friend class RefCountedThreadSafe<ThreadTestHelper>; 31 32 virtual ~ThreadTestHelper(); 33 34 // Use this method to store the result of RunTest(). 35 void set_test_result(bool test_result) { test_result_ = test_result; } 36 37 private: 38 void RunInThread(); 39 40 bool test_result_; 41 scoped_refptr<MessageLoopProxy> target_thread_; 42 WaitableEvent done_event_; 43 44 DISALLOW_COPY_AND_ASSIGN(ThreadTestHelper); 45}; 46 47} // namespace base 48 49#endif // BASE_TEST_THREAD_TEST_HELPER_H_ 50