1 // Copyright 2013 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_TEST_IO_THREAD_H_ 6 #define BASE_TEST_TEST_IO_THREAD_H_ 7 8 #include "base/callback_forward.h" 9 #include "base/compiler_specific.h" 10 #include "base/macros.h" 11 #include "base/memory/ref_counted.h" 12 #include "base/task_runner.h" 13 #include "base/threading/thread.h" 14 #include "base/time/time.h" 15 16 namespace base { 17 18 // Create and run an IO thread with a MessageLoop, and 19 // making the MessageLoop accessible from its client. 20 // It also provides some ideomatic API like PostTaskAndWait(). 21 class TestIOThread { 22 public: 23 enum Mode { kAutoStart, kManualStart }; 24 explicit TestIOThread(Mode mode); 25 // Stops the I/O thread if necessary. 26 ~TestIOThread(); 27 28 // |Start()|/|Stop()| should only be called from the main (creation) thread. 29 // After |Stop()|, |Start()| may be called again to start a new I/O thread. 30 // |Stop()| may be called even when the I/O thread is not started. 31 void Start(); 32 void Stop(); 33 34 // Post |task| to the IO thread. 35 void PostTask(const tracked_objects::Location& from_here, 36 const base::Closure& task); 37 // Posts |task| to the IO-thread with an WaitableEvent associated blocks on 38 // it until the posted |task| is executed, then returns. 39 void PostTaskAndWait(const tracked_objects::Location& from_here, 40 const base::Closure& task); 41 message_loop()42 base::MessageLoopForIO* message_loop() { 43 return static_cast<base::MessageLoopForIO*>(io_thread_.message_loop()); 44 } 45 task_runner()46 scoped_refptr<SingleThreadTaskRunner> task_runner() { 47 return message_loop()->task_runner(); 48 } 49 50 private: 51 base::Thread io_thread_; 52 bool io_thread_started_; 53 54 DISALLOW_COPY_AND_ASSIGN(TestIOThread); 55 }; 56 57 } // namespace base 58 59 #endif // BASE_TEST_TEST_IO_THREAD_H_ 60