mirror of
https://github.com/Atmosphere-NX/Atmosphere
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114 lines
4.4 KiB
C++
114 lines
4.4 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_multiple_wait_holder_base.hpp"
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#if defined(ATMOSPHERE_OS_HORIZON)
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#include "os_multiple_wait_target_impl.os.horizon.hpp"
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#else
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#error "Unknown OS for ams::os::MultiWaitTargetImpl"
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#endif
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namespace ams::os::impl {
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class MultiWaitImpl {
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public:
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static constexpr size_t MaximumHandleCount = MultiWaitTargetImpl::MaximumHandleCount;
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static constexpr s32 WaitInvalid = -3;
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static constexpr s32 WaitCancelled = -2;
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static constexpr s32 WaitTimedOut = -1;
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using MultiWaitList = util::IntrusiveListMemberTraits<&MultiWaitHolderBase::multi_wait_node>::ListType;
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private:
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MultiWaitList multi_wait_list;
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MultiWaitHolderBase *signaled_holder;
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TimeSpan current_time;
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InternalCriticalSection cs_wait;
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MultiWaitTargetImpl target_impl;
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private:
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Result WaitAnyImpl(MultiWaitHolderBase **out, bool infinite, TimeSpan timeout, bool reply, Handle reply_target);
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Result WaitAnyHandleImpl(MultiWaitHolderBase **out, bool infinite, TimeSpan timeout, bool reply, Handle reply_target);
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s32 BuildHandleArray(Handle out_handles[], MultiWaitHolderBase *out_objects[], s32 num);
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MultiWaitHolderBase *LinkHoldersToObjectList();
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void UnlinkHoldersFromObjectList();
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MultiWaitHolderBase *RecalculateNextTimeout(TimeSpan *out_min_timeout, TimeSpan end_time);
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MultiWaitHolderBase *WaitAnyImpl(bool infinite, TimeSpan timeout) {
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MultiWaitHolderBase *holder = nullptr;
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const Result wait_result = this->WaitAnyImpl(std::addressof(holder), infinite, timeout, false, svc::InvalidHandle);
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R_ASSERT(wait_result);
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AMS_UNUSED(wait_result);
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return holder;
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}
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public:
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/* Wait. */
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MultiWaitHolderBase *WaitAny() {
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return this->WaitAnyImpl(true, TimeSpan::FromNanoSeconds(std::numeric_limits<s64>::max()));
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}
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MultiWaitHolderBase *TryWaitAny() {
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return this->WaitAnyImpl(false, TimeSpan(0));
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}
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MultiWaitHolderBase *TimedWaitAny(TimeSpan ts) {
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return this->WaitAnyImpl(false, ts);
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}
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Result ReplyAndReceive(MultiWaitHolderBase **out, Handle reply_target) {
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return this->WaitAnyImpl(out, true, TimeSpan::FromNanoSeconds(std::numeric_limits<s64>::max()), true, reply_target);
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}
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/* List management. */
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bool IsEmpty() const {
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return this->multi_wait_list.empty();
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}
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void LinkMultiWaitHolder(MultiWaitHolderBase &holder_base) {
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this->multi_wait_list.push_back(holder_base);
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}
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void UnlinkMultiWaitHolder(MultiWaitHolderBase &holder_base) {
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this->multi_wait_list.erase(this->multi_wait_list.iterator_to(holder_base));
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}
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void UnlinkAll() {
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while (!this->IsEmpty()) {
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this->multi_wait_list.front().SetMultiWait(nullptr);
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this->multi_wait_list.pop_front();
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}
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}
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void MoveAllFrom(MultiWaitImpl &other) {
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/* Set ourselves as multi wait for all of the other's holders. */
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for (auto &w : other.multi_wait_list) {
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w.SetMultiWait(this);
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}
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this->multi_wait_list.splice(this->multi_wait_list.end(), other.multi_wait_list);
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}
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/* Other. */
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TimeSpan GetCurrentTime() const {
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return this->current_time;
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}
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void SignalAndWakeupThread(MultiWaitHolderBase *holder_base);
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};
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}
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