2015-07-09 20:44:32 +00:00
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/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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2015-01-21 21:13:31 +00:00
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#ifndef SkMutex_DEFINED
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#define SkMutex_DEFINED
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2019-04-23 17:05:21 +00:00
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#include "include/core/SkTypes.h"
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#include "include/private/SkMacros.h"
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#include "include/private/SkSemaphore.h"
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2019-05-10 16:16:17 +00:00
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#include "include/private/SkThreadAnnotations.h"
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2019-04-23 17:05:21 +00:00
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#include "include/private/SkThreadID.h"
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2015-01-21 21:13:31 +00:00
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2019-05-10 16:16:17 +00:00
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class SK_CAPABILITY("mutex") SkMutex {
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2016-05-05 01:23:30 +00:00
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public:
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2019-05-10 16:16:17 +00:00
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constexpr SkMutex() = default;
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void acquire() SK_ACQUIRE() {
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fSemaphore.wait();
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SkDEBUGCODE(fOwner = SkGetThreadID();)
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}
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void release() SK_RELEASE_CAPABILITY() {
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this->assertHeld();
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SkDEBUGCODE(fOwner = kIllegalThreadID;)
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fSemaphore.signal();
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}
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void assertHeld() SK_ASSERT_CAPABILITY(this) {
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SkASSERT(fOwner == SkGetThreadID());
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}
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private:
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SkSemaphore fSemaphore{1};
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SkDEBUGCODE(SkThreadID fOwner{kIllegalThreadID};)
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2015-09-24 14:34:49 +00:00
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};
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2015-01-21 21:13:31 +00:00
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2019-05-10 16:16:17 +00:00
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class SK_SCOPED_CAPABILITY SkAutoMutexExclusive {
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2015-10-22 02:11:13 +00:00
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public:
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2019-05-10 16:16:17 +00:00
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SkAutoMutexExclusive(SkMutex& mutex) SK_ACQUIRE(mutex) : fMutex(mutex) { fMutex.acquire(); }
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~SkAutoMutexExclusive() SK_RELEASE_CAPABILITY() { fMutex.release(); }
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2015-02-02 20:22:07 +00:00
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2021-02-28 15:00:29 +00:00
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SkAutoMutexExclusive(const SkAutoMutexExclusive&) = delete;
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SkAutoMutexExclusive(SkAutoMutexExclusive&&) = delete;
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SkAutoMutexExclusive& operator=(const SkAutoMutexExclusive&) = delete;
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SkAutoMutexExclusive& operator=(SkAutoMutexExclusive&&) = delete;
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2016-06-10 20:56:35 +00:00
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private:
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2019-05-10 16:16:17 +00:00
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SkMutex& fMutex;
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2016-06-10 20:56:35 +00:00
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};
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2019-05-10 16:16:17 +00:00
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2019-06-17 18:40:42 +00:00
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#endif // SkMutex_DEFINED
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