OpenShot Audio Library | OpenShotAudio  0.3.1
juce_InterProcessLock.h
1 /*
2  ==============================================================================
3 
4  This file is part of the JUCE library.
5  Copyright (c) 2017 - ROLI Ltd.
6 
7  JUCE is an open source library subject to commercial or open-source
8  licensing.
9 
10  The code included in this file is provided under the terms of the ISC license
11  http://www.isc.org/downloads/software-support-policy/isc-license. Permission
12  To use, copy, modify, and/or distribute this software for any purpose with or
13  without fee is hereby granted provided that the above copyright notice and
14  this permission notice appear in all copies.
15 
16  JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
17  EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
18  DISCLAIMED.
19 
20  ==============================================================================
21 */
22 
23 namespace juce
24 {
25 
26 //==============================================================================
34 class JUCE_API InterProcessLock
35 {
36 public:
37  //==============================================================================
41  explicit InterProcessLock (const String& name);
42 
47 
48  //==============================================================================
57  bool enter (int timeOutMillisecs = -1);
58 
60  void exit();
61 
62  //==============================================================================
72  {
73  public:
74  //==============================================================================
88  explicit ScopedLockType (InterProcessLock& l) : ipLock (l) { lockWasSuccessful = l.enter(); }
89 
97  inline ~ScopedLockType() { ipLock.exit(); }
98 
100  bool isLocked() const noexcept { return lockWasSuccessful; }
101 
102  private:
103  //==============================================================================
104  InterProcessLock& ipLock;
105  bool lockWasSuccessful;
106 
107  JUCE_DECLARE_NON_COPYABLE (ScopedLockType)
108  };
109 
110 private:
111  //==============================================================================
112  class Pimpl;
113  std::unique_ptr<Pimpl> pimpl;
114 
115  CriticalSection lock;
116  String name;
117 
118  JUCE_DECLARE_NON_COPYABLE (InterProcessLock)
119 };
120 
121 } // namespace juce
bool enter(int timeOutMillisecs=-1)