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53 lines
1.2 KiB
C++
53 lines
1.2 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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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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#include "mojo/public/cpp/utility/mutex.h"
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#include <assert.h>
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#include <errno.h>
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namespace mojo {
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// Release builds have inlined (non-error-checking) definitions in the header.
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#if !defined(NDEBUG)
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Mutex::Mutex() {
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pthread_mutexattr_t mutexattr;
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int rv = pthread_mutexattr_init(&mutexattr);
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assert(rv == 0);
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rv = pthread_mutexattr_settype(&mutexattr, PTHREAD_MUTEX_ERRORCHECK);
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assert(rv == 0);
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rv = pthread_mutex_init(&mutex_, &mutexattr);
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assert(rv == 0);
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rv = pthread_mutexattr_destroy(&mutexattr);
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assert(rv == 0);
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}
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Mutex::~Mutex() {
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int rv = pthread_mutex_destroy(&mutex_);
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assert(rv == 0);
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}
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void Mutex::Lock() {
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int rv = pthread_mutex_lock(&mutex_);
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assert(rv == 0);
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}
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void Mutex::Unlock() {
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int rv = pthread_mutex_unlock(&mutex_);
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assert(rv == 0);
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}
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bool Mutex::TryLock() {
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int rv = pthread_mutex_trylock(&mutex_);
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assert(rv == 0 || rv == EBUSY);
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return rv == 0;
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}
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void Mutex::AssertHeld() {
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assert(pthread_mutex_lock(&mutex_) == EDEADLK);
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}
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#endif // !defined(NDEBUG)
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} // namespace mojo
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