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juce_ScopedLock.h
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1 /*
2  ==============================================================================
3 
4  This file is part of the juce_core module of the JUCE library.
5  Copyright (c) 2015 - ROLI Ltd.
6 
7  Permission to use, copy, modify, and/or distribute this software for any purpose with
8  or without fee is hereby granted, provided that the above copyright notice and this
9  permission notice appear in all copies.
10 
11  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
12  TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
13  NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14  DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
15  IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
16  CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 
18  ------------------------------------------------------------------------------
19 
20  NOTE! This permissive ISC license applies ONLY to files within the juce_core module!
21  All other JUCE modules are covered by a dual GPL/commercial license, so if you are
22  using any other modules, be sure to check that you also comply with their license.
23 
24  For more details, visit www.juce.com
25 
26  ==============================================================================
27 */
28 
29 #ifndef JUCE_SCOPEDLOCK_H_INCLUDED
30 #define JUCE_SCOPEDLOCK_H_INCLUDED
31 
32 
33 //==============================================================================
58 template <class LockType>
60 {
61 public:
62  //==============================================================================
72  inline explicit GenericScopedLock (const LockType& lock) noexcept : lock_ (lock) { lock.enter(); }
73 
79  inline ~GenericScopedLock() noexcept { lock_.exit(); }
80 
81 private:
82  //==============================================================================
83  const LockType& lock_;
84 
86 };
87 
88 
89 //==============================================================================
127 template <class LockType>
129 {
130 public:
131  //==============================================================================
142  inline explicit GenericScopedUnlock (const LockType& lock) noexcept : lock_ (lock) { lock.exit(); }
143 
151  inline ~GenericScopedUnlock() noexcept { lock_.enter(); }
152 
153 
154 private:
155  //==============================================================================
156  const LockType& lock_;
157 
159 };
160 
161 
162 //==============================================================================
197 template <class LockType>
199 {
200 public:
201  //==============================================================================
212  inline explicit GenericScopedTryLock (const LockType& lock) noexcept
213  : lock_ (lock), lockWasSuccessful (lock.tryEnter()) {}
214 
223  inline ~GenericScopedTryLock() noexcept { if (lockWasSuccessful) lock_.exit(); }
224 
226  bool isLocked() const noexcept { return lockWasSuccessful; }
227 
228 private:
229  //==============================================================================
230  const LockType& lock_;
231  const bool lockWasSuccessful;
232 
234 };
235 
236 
237 #endif // JUCE_SCOPEDLOCK_H_INCLUDED
bool isLocked() const noexcept
Definition: juce_ScopedLock.h:226
#define noexcept
Definition: juce_CompilerSupport.h:141
Definition: juce_ScopedLock.h:59
Definition: juce_ScopedLock.h:128
Definition: juce_ScopedLock.h:198
GenericScopedTryLock(const LockType &lock) noexcept
Definition: juce_ScopedLock.h:212
~GenericScopedUnlock() noexcept
Definition: juce_ScopedLock.h:151
~GenericScopedTryLock() noexcept
Definition: juce_ScopedLock.h:223
GenericScopedUnlock(const LockType &lock) noexcept
Definition: juce_ScopedLock.h:142
~GenericScopedLock() noexcept
Definition: juce_ScopedLock.h:79
GenericScopedLock(const LockType &lock) noexcept
Definition: juce_ScopedLock.h:72
#define JUCE_DECLARE_NON_COPYABLE(className)
Definition: juce_PlatformDefs.h:191