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Merge remote-tracking branch 'Kernel/master'
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Kernel/include_std/mutex
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Kernel/include_std/mutex
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/*
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This file is part of Fennix Kernel.
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Fennix Kernel is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Kernel is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <types.h>
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#include <task.hpp>
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#include <atomic>
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#include <vector>
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namespace std
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{
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struct defer_lock_t
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{
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explicit defer_lock_t() = default;
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};
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struct try_to_lock_t
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{
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explicit try_to_lock_t() = default;
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};
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struct adopt_lock_t
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{
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explicit adopt_lock_t() = default;
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};
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/**
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* A mutex implementation.
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*
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* @note The TaskManager must be
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* initialized before using this class.
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*/
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class mutex
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{
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private:
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atomic_bool Locked = false;
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list<Tasking::TCB *> Waiting;
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Tasking::TCB *Holder = nullptr;
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public:
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void lock();
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bool try_lock();
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void unlock();
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mutex();
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mutex(const mutex &) = delete;
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~mutex();
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};
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template <class Mutex>
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class lock_guard
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{
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private:
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Mutex &mutexRef;
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public:
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explicit lock_guard(Mutex &m)
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: mutexRef(m)
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{
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mutexRef.lock();
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}
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lock_guard(Mutex &m, adopt_lock_t t)
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: mutexRef(m)
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{
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/* Do nothing */
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}
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lock_guard(const lock_guard &) = delete;
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~lock_guard()
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{
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mutexRef.unlock();
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}
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lock_guard &operator=(const lock_guard &) = delete;
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};
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}
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