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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "mojo/public/cpp/utility/mutex.h"
#include <assert.h>
#include <errno.h>
namespace mojo {
// Release builds have inlined (non-error-checking) definitions in the header.
#if !defined(NDEBUG)
Mutex::Mutex() {
pthread_mutexattr_t mutexattr;
int rv = pthread_mutexattr_init(&mutexattr);
assert(rv == 0);
rv = pthread_mutexattr_settype(&mutexattr, PTHREAD_MUTEX_ERRORCHECK);
assert(rv == 0);
rv = pthread_mutex_init(&mutex_, &mutexattr);
assert(rv == 0);
rv = pthread_mutexattr_destroy(&mutexattr);
assert(rv == 0);
}
Mutex::~Mutex() {
int rv = pthread_mutex_destroy(&mutex_);
assert(rv == 0);
}
void Mutex::Lock() {
int rv = pthread_mutex_lock(&mutex_);
assert(rv == 0);
}
void Mutex::Unlock() {
int rv = pthread_mutex_unlock(&mutex_);
assert(rv == 0);
}
bool Mutex::TryLock() {
int rv = pthread_mutex_trylock(&mutex_);
assert(rv == 0 || rv == EBUSY);
return rv == 0;
}
void Mutex::AssertHeld() {
assert(pthread_mutex_lock(&mutex_) == EDEADLK);
}
#endif // !defined(NDEBUG)
} // namespace mojo
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