1 // Copyright (c) 2012 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_CRITICAL_CLOSURE_H_ 6 #define BASE_CRITICAL_CLOSURE_H_ 7 8 #include "base/callback.h" 9 10 namespace base { 11 12 // Returns a closure that will continue to run for a period of time when the 13 // application goes to the background if possible on platforms where 14 // applications don't execute while backgrounded, otherwise the original task is 15 // returned. 16 // 17 // Example: 18 // file_message_loop_proxy_->PostTask( 19 // FROM_HERE, 20 // MakeCriticalClosure(base::Bind(&WriteToDiskTask, path_, data))); 21 // 22 // Note new closures might be posted in this closure. If the new closures need 23 // background running time, |MakeCriticalClosure| should be applied on them 24 // before posting. 25 #if defined(OS_IOS) 26 base::Closure MakeCriticalClosure(const base::Closure& closure); 27 #else 28 inline base::Closure MakeCriticalClosure(const base::Closure& closure) { 29 // No-op for platforms where the application does not need to acquire 30 // background time for closures to finish when it goes into the background. 31 return closure; 32 } 33 #endif // !defined(OS_IOS) 34 35 } // namespace base 36 37 #endif // BASE_CRITICAL_CLOSURE_H_ 38
