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https://github.com/Atmosphere-NX/Atmosphere-libs.git
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b52d630cf0
This implements waitable management for Events (and implements Events). It also refactors PM to use new Event/Waitable semantics, and also adds STS_ASSERT as a macro for asserting a boolean expression. The rest of stratosphere has been refactored to use STS_ASSERT whenever possible.
64 lines
2.7 KiB
C++
64 lines
2.7 KiB
C++
/*
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* Copyright (c) 2018-2019 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_waitable_holder_base.hpp"
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#include "os_waitable_object_list.hpp"
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namespace sts::os::impl {
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template<MessageQueueWaitKind WaitKind>
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class WaitableHolderOfMessageQueue : public WaitableHolderOfUserObject {
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static_assert(WaitKind == MessageQueueWaitKind::ForNotEmpty || WaitKind == MessageQueueWaitKind::ForNotFull, "MessageQueueHolder WaitKind!");
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private:
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MessageQueue *message_queue;
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private:
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TriBool IsSignaledImpl() const {
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if constexpr (WaitKind == MessageQueueWaitKind::ForNotEmpty) {
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/* ForNotEmpty. */
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return this->message_queue->IsEmpty() ? TriBool::False : TriBool::True;
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} else /* if constexpr (WaitKind == MessageQueueWaitKind::ForNotFull) */ {
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/* ForNotFull */
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return this->message_queue->IsFull() ? TriBool::False : TriBool::True;
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}
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}
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public:
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explicit WaitableHolderOfMessageQueue(MessageQueue *mq) : message_queue(mq) { /* ... */ }
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/* IsSignaled, Link, Unlink implemented. */
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virtual TriBool IsSignaled() const override {
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std::scoped_lock lk(this->message_queue->queue_lock);
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return this->IsSignaledImpl();
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}
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virtual TriBool LinkToObjectList() override {
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std::scoped_lock lk(this->message_queue->queue_lock);
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GetReference(this->message_queue->waitable_object_list_storage).LinkWaitableHolder(*this);
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return this->IsSignaledImpl();
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}
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virtual void UnlinkFromObjectList() override {
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std::scoped_lock lk(this->message_queue->queue_lock);
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GetReference(this->message_queue->waitable_object_list_storage).UnlinkWaitableHolder(*this);
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}
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};
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using WaitableHolderOfMessageQueueForNotEmpty = WaitableHolderOfMessageQueue<MessageQueueWaitKind::ForNotEmpty>;
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using WaitableHolderOfMessageQueueForNotFull = WaitableHolderOfMessageQueue<MessageQueueWaitKind::ForNotFull>;
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}
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