OpenShot Audio Library | OpenShotAudio 0.3.2
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juce_ScopedLock.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
23namespace juce
24{
25
26//==============================================================================
53template <class LockType>
55{
56public:
57 //==============================================================================
67 inline explicit GenericScopedLock (const LockType& lock) noexcept : lock_ (lock) { lock.enter(); }
68
74 inline ~GenericScopedLock() noexcept { lock_.exit(); }
75
76private:
77 //==============================================================================
78 const LockType& lock_;
79
80 JUCE_DECLARE_NON_COPYABLE (GenericScopedLock)
81};
82
83
84//==============================================================================
124template <class LockType>
126{
127public:
128 //==============================================================================
139 inline explicit GenericScopedUnlock (const LockType& lock) noexcept : lock_ (lock) { lock.exit(); }
140
148 inline ~GenericScopedUnlock() noexcept { lock_.enter(); }
149
150
151private:
152 //==============================================================================
153 const LockType& lock_;
154
155 JUCE_DECLARE_NON_COPYABLE (GenericScopedUnlock)
156};
157
158
159//==============================================================================
196template <class LockType>
198{
199public:
200 //==============================================================================
217 inline explicit GenericScopedTryLock (const LockType& lock, bool acquireLockOnInitialisation = true) noexcept
218 : lock_ (lock), lockWasSuccessful (acquireLockOnInitialisation && lock.tryEnter()) {}
219
228 inline ~GenericScopedTryLock() noexcept { if (lockWasSuccessful) lock_.exit(); }
229
231 bool isLocked() const noexcept { return lockWasSuccessful; }
232
234 bool retryLock() const noexcept { lockWasSuccessful = lock_.tryEnter(); return lockWasSuccessful; }
235
236private:
237 //==============================================================================
238 const LockType& lock_;
239 mutable bool lockWasSuccessful;
240
241 JUCE_DECLARE_NON_COPYABLE (GenericScopedTryLock)
242};
243
244} // namespace juce
GenericScopedLock(const LockType &lock) noexcept
GenericScopedTryLock(const LockType &lock, bool acquireLockOnInitialisation=true) noexcept
bool isLocked() const noexcept
bool retryLock() const noexcept
GenericScopedUnlock(const LockType &lock) noexcept