1 // Copyright 2014 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 MOJO_SHELL_KEEP_ALIVE_H_ 6 #define MOJO_SHELL_KEEP_ALIVE_H_ 7 8 #include "base/basictypes.h" 9 10 namespace mojo { 11 namespace shell { 12 13 class Context; 14 class KeepAlive; 15 16 class KeepAliveCounter { 17 public: 18 KeepAliveCounter() : count_(0) { 19 } 20 private: 21 friend class KeepAlive; 22 int count_; 23 }; 24 25 // Instantiate this class to extend the lifetime of the thread associated 26 // with |context| (i.e., the shell's UI thread). Must only be used from 27 // the shell's UI thread. 28 class KeepAlive { 29 public: 30 explicit KeepAlive(Context* context); 31 ~KeepAlive(); 32 33 private: 34 static void MaybeQuit(Context* context); 35 36 Context* context_; 37 38 DISALLOW_COPY_AND_ASSIGN(KeepAlive); 39 }; 40 41 } // namespace shell 42 } // namespace mojo 43 44 #endif // MOJO_SHELL_KEEP_ALIVE_H_ 45
