mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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56 lines
1.6 KiB
C++
56 lines
1.6 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "os_mutex.hpp"
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#include "os_condvar.hpp"
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namespace ams::os {
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namespace impl {
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class WaitableObjectList;
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class WaitableHolderOfSemaphore;
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}
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class Semaphore {
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friend class impl::WaitableHolderOfSemaphore;
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NON_COPYABLE(Semaphore);
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NON_MOVEABLE(Semaphore);
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private:
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util::TypedStorage<impl::WaitableObjectList, sizeof(util::IntrusiveListNode), alignof(util::IntrusiveListNode)> waitlist;
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os::Mutex mutex;
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os::ConditionVariable condvar;
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int count;
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int max_count;
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public:
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explicit Semaphore(int c, int mc);
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~Semaphore();
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void Acquire();
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bool TryAcquire();
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bool TimedAcquire(u64 timeout);
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void Release();
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void Release(int count);
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constexpr inline int GetCurrentCount() const {
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return this->count;
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}
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};
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}
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