1 // Copyright (c) 2006-2008 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 NET_BASE_TEST_COMPLETION_CALLBACK_H_ 6 #define NET_BASE_TEST_COMPLETION_CALLBACK_H_ 7 8 #include "base/message_loop.h" 9 #include "net/base/completion_callback.h" 10 #include "net/base/net_errors.h" 11 12 //----------------------------------------------------------------------------- 13 // completion callback helper 14 15 // A helper class for completion callbacks, designed to make it easy to run 16 // tests involving asynchronous operations. Just call WaitForResult to wait 17 // for the asynchronous operation to complete. 18 // 19 // NOTE: Since this runs a message loop to wait for the completion callback, 20 // there could be other side-effects resulting from WaitForResult. For this 21 // reason, this class is probably not ideal for a general application. 22 // 23 class TestCompletionCallback : public CallbackRunner< Tuple1<int> > { 24 public: 25 TestCompletionCallback() 26 : result_(0), 27 have_result_(false), 28 waiting_for_result_(false) { 29 } 30 31 int WaitForResult() { 32 DCHECK(!waiting_for_result_); 33 while (!have_result_) { 34 waiting_for_result_ = true; 35 MessageLoop::current()->Run(); 36 waiting_for_result_ = false; 37 } 38 have_result_ = false; // auto-reset for next callback 39 return result_; 40 } 41 42 int GetResult(int result) { 43 if (net::ERR_IO_PENDING != result) 44 return result; 45 return WaitForResult(); 46 } 47 48 bool have_result() const { return have_result_; } 49 50 virtual void RunWithParams(const Tuple1<int>& params) { 51 result_ = params.a; 52 have_result_ = true; 53 if (waiting_for_result_) 54 MessageLoop::current()->Quit(); 55 } 56 57 private: 58 int result_; 59 bool have_result_; 60 bool waiting_for_result_; 61 }; 62 63 #endif // NET_BASE_TEST_COMPLETION_CALLBACK_H_ 64
