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/*
* Copyright (c) 2017-2019 Arm Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __ARM_COMPUTE_MUTEX_H__
#define __ARM_COMPUTE_MUTEX_H__
#include <mutex>
namespace arm_compute
{
#ifndef NO_MULTI_THREADING
/** Wrapper of Mutex data-object */
using Mutex = std::mutex;
/** Wrapper of lock_guard data-object */
template <typename Mutex>
using lock_guard = std::lock_guard<Mutex>;
/** Wrapper of lock_guard data-object */
template <typename Mutex>
using unique_lock = std::unique_lock<Mutex>;
#else /* NO_MULTI_THREADING */
/** Wrapper implementation of Mutex data-object */
class Mutex
{
public:
/** Default constructor */
Mutex() = default;
/** Default destructor */
~Mutex() = default;
/** Lock */
void lock() {};
/** Unlock */
void unlock() {};
/** Try the lock.
*
* @return true.
*/
bool try_lock()
{
return true;
}
};
/** Wrapper implementation of lock-guard data-object */
template <typename Mutex>
class lock_guard
{
public:
typedef Mutex mutex_type;
public:
explicit lock_guard(Mutex &m_)
: m(m_)
{
}
~lock_guard()
{
}
lock_guard(const lock_guard &) = delete;
private:
mutex_type &m;
};
/** Wrapper implementation of unique-lock data-object */
template <typename Mutex>
class unique_lock
{
public:
typedef Mutex mutex_type;
public:
unique_lock() noexcept : m(nullptr)
{
}
explicit unique_lock(mutex_type &m)
: m(&m)
{
}
unique_lock(const unique_lock &) = delete;
unique_lock(unique_lock &&) = default;
unique_lock &operator=(const unique_lock &) = delete;
unique_lock &operator=(unique_lock &&) = default;
~unique_lock() = default;
void lock()
{
}
bool try_lock()
{
return true;
}
void unlock()
{
}
private:
mutex_type *m;
};
#endif /* NO_MULTI_THREADING */
}
#endif /* __ARM_COMPUTE_MUTEX_H__ */
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