![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
Color Oled(SSD1331) connect to STMicroelectronics Nucleo-F466
Diff: mbed-os/platform/ScopedLock.h
- Revision:
- 0:8fdf9a60065b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os/platform/ScopedLock.h Wed Oct 10 00:33:53 2018 +0000 @@ -0,0 +1,87 @@ +/* mbed Microcontroller Library + * Copyright (c) 2018 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef MBED_SCOPEDLOCK_H +#define MBED_SCOPEDLOCK_H + +#include "platform/NonCopyable.h" + +namespace mbed { + +/** \addtogroup platform */ +/** @{*/ +/** + * \defgroup platform_ScopedLock ScopedLock functions + * @{ + */ + +/** RAII-style mechanism for owning a lock of Lockable object for the duration of a scoped block + * + * @tparam Lockable The type implementing BasicLockable concept + * + * @note For type Lockable to be BasicLockable, the following conditions have to be satisfied: + * - has public member function @a lock which blocks until a lock can be obtained for the current execution context + * - has public member function @a unlock which releases the lock + * + * Usage: + * + * Example with rtos::Mutex + * + * @code + * void foo(Mutex &m) { + * ScopedLock<Mutex> lock(m); + * // Mutex lock protects code in this block + * } + * @endcode + * + * + * More generic example + * + * @code + * template<typename Lockable> + * void foo(Lockable& lockable) { + * ScopedLock<Lockable> lock(lockable); + * // Code in this block runs under lock + * } + * @endcode + */ +template <typename Lockable> +class ScopedLock : private NonCopyable<ScopedLock<Lockable> > { +public: + /** Locks given locable object + * + * @param lockable reference to the instance of Lockable object + * @note lockable object should outlive the ScopedLock object + */ + ScopedLock(Lockable &lockable): _lockable(lockable) + { + _lockable.lock(); + } + + ~ScopedLock() + { + _lockable.unlock(); + } +private: + Lockable &_lockable; +}; + +/**@}*/ + +/**@}*/ + +} // embed + +#endif // MBED_SCOPEDLOCK_H