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 #include "base/critical_closure.h" 6 7 #import <UIKit/UIKit.h> 8 9 #include "base/bind.h" 10 #include "base/ios/scoped_critical_action.h" 11 #include "base/memory/ref_counted.h" 12 13 namespace { 14 15 // This class wraps a closure so it can continue to run for a period of time 16 // when the application goes to the background by using 17 // |base::ios::ScopedCriticalAction|. 18 class CriticalClosure : public base::RefCountedThreadSafe<CriticalClosure> { 19 public: 20 explicit CriticalClosure(base::Closure* closure) : closure_(closure) { 21 } 22 23 void Run() { 24 closure_->Run(); 25 } 26 27 private: 28 friend class base::RefCountedThreadSafe<CriticalClosure>; 29 30 virtual ~CriticalClosure() {} 31 32 base::ios::ScopedCriticalAction criticial_action_; 33 scoped_ptr<base::Closure> closure_; 34 35 DISALLOW_COPY_AND_ASSIGN(CriticalClosure); 36 }; 37 38 } // namespace 39 40 namespace base { 41 42 base::Closure MakeCriticalClosure(const base::Closure& closure) { 43 DCHECK([[UIDevice currentDevice] isMultitaskingSupported]); 44 scoped_refptr<CriticalClosure> critical_closure( 45 new CriticalClosure(new base::Closure(closure))); 46 return base::Bind(&CriticalClosure::Run, critical_closure.get()); 47 } 48 49 } // namespace base 50
