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// Copyright (c) 2012 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 "ppapi/utility/threading/lock.h"
namespace pp {
#ifdef WIN32 // Windows implementation for native plugins.
Lock::Lock() {
// The second parameter is the spin count; for short-held locks it avoids the
// contending thread from going to sleep which helps performance greatly.
::InitializeCriticalSectionAndSpinCount(&os_lock_, 2000);
}
Lock::~Lock() {
::DeleteCriticalSection(&os_lock_);
}
void Lock::Acquire() {
::EnterCriticalSection(&os_lock_);
}
void Lock::Release() {
::LeaveCriticalSection(&os_lock_);
}
#else // Posix implementation.
Lock::Lock() {
pthread_mutex_init(&os_lock_, NULL);
}
Lock::~Lock() {
pthread_mutex_destroy(&os_lock_);
}
void Lock::Acquire() {
pthread_mutex_lock(&os_lock_);
}
void Lock::Release() {
pthread_mutex_unlock(&os_lock_);
}
#endif
} // namespace pp
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