mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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339 lines
11 KiB
C++
339 lines
11 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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#include <stratosphere.hpp>
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#include "impl/os_timeout_helper.hpp"
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#include "impl/os_waitable_object_list.hpp"
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#include "impl/os_waitable_holder_impl.hpp"
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#include "impl/os_message_queue_helper.hpp"
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namespace ams::os {
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namespace {
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using MessageQueueHelper = impl::MessageQueueHelper<MessageQueueType>;
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}
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void InitializeMessageQueue(MessageQueueType *mq, uintptr_t *buffer, size_t count) {
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AMS_ASSERT(buffer != nullptr);
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AMS_ASSERT(count >= 1);
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/* Setup objects. */
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util::ConstructAt(mq->cs_queue);
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util::ConstructAt(mq->cv_not_full);
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util::ConstructAt(mq->cv_not_empty);
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/* Setup wait lists. */
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util::ConstructAt(mq->waitlist_not_empty);
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util::ConstructAt(mq->waitlist_not_full);
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/* Set member variables. */
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mq->buffer = buffer;
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mq->capacity = static_cast<s32>(count);
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mq->count = 0;
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mq->offset = 0;
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/* Mark initialized. */
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mq->state = MessageQueueType::State_Initialized;
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}
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void FinalizeMessageQueue(MessageQueueType *mq) {
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AMS_ASSERT(mq->state = MessageQueueType::State_Initialized);
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AMS_ASSERT(GetReference(mq->waitlist_not_empty).IsEmpty());
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AMS_ASSERT(GetReference(mq->waitlist_not_full).IsEmpty());
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/* Mark uninitialized. */
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mq->state = MessageQueueType::State_NotInitialized;
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/* Destroy wait lists. */
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util::DestroyAt(mq->waitlist_not_empty);
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util::DestroyAt(mq->waitlist_not_full);
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/* Destroy objects. */
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util::DestroyAt(mq->cv_not_empty);
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util::DestroyAt(mq->cv_not_full);
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util::DestroyAt(mq->cs_queue);
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}
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/* Sending (FIFO functionality) */
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void SendMessageQueue(MessageQueueType *mq, uintptr_t data) {
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AMS_ASSERT(mq->state == MessageQueueType::State_Initialized);
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{
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/* Acquire mutex, wait sendable. */
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std::scoped_lock lk(GetReference(mq->cs_queue));
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while (MessageQueueHelper::IsMessageQueueFull(mq)) {
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GetReference(mq->cv_not_full).Wait(GetPointer(mq->cs_queue));
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}
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/* Send, signal. */
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MessageQueueHelper::EnqueueUnsafe(mq, data);
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GetReference(mq->cv_not_empty).Broadcast();
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GetReference(mq->waitlist_not_empty).SignalAllThreads();
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}
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}
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bool TrySendMessageQueue(MessageQueueType *mq, uintptr_t data) {
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AMS_ASSERT(mq->state == MessageQueueType::State_Initialized);
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{
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/* Acquire mutex, check sendable. */
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std::scoped_lock lk(GetReference(mq->cs_queue));
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if (MessageQueueHelper::IsMessageQueueFull(mq)) {
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return false;
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}
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/* Send, signal. */
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MessageQueueHelper::EnqueueUnsafe(mq, data);
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GetReference(mq->cv_not_empty).Broadcast();
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GetReference(mq->waitlist_not_empty).SignalAllThreads();
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}
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return true;
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}
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bool TimedSendMessageQueue(MessageQueueType *mq, uintptr_t data, TimeSpan timeout) {
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AMS_ASSERT(mq->state == MessageQueueType::State_Initialized);
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AMS_ASSERT(timeout.GetNanoSeconds() >= 0);
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{
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/* Acquire mutex, wait sendable. */
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impl::TimeoutHelper timeout_helper(timeout);
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std::scoped_lock lk(GetReference(mq->cs_queue));
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while (MessageQueueHelper::IsMessageQueueFull(mq)) {
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if (timeout_helper.TimedOut()) {
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return false;
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}
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GetReference(mq->cv_not_full).TimedWait(GetPointer(mq->cs_queue), timeout_helper);
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}
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/* Send, signal. */
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MessageQueueHelper::EnqueueUnsafe(mq, data);
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GetReference(mq->cv_not_empty).Broadcast();
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GetReference(mq->waitlist_not_empty).SignalAllThreads();
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}
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return true;
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}
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/* Jamming (LIFO functionality) */
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void JamMessageQueue(MessageQueueType *mq, uintptr_t data) {
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AMS_ASSERT(mq->state == MessageQueueType::State_Initialized);
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{
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/* Acquire mutex, wait sendable. */
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std::scoped_lock lk(GetReference(mq->cs_queue));
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while (MessageQueueHelper::IsMessageQueueFull(mq)) {
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GetReference(mq->cv_not_full).Wait(GetPointer(mq->cs_queue));
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}
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/* Send, signal. */
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MessageQueueHelper::JamUnsafe(mq, data);
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GetReference(mq->cv_not_empty).Broadcast();
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GetReference(mq->waitlist_not_empty).SignalAllThreads();
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}
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}
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bool TryJamMessageQueue(MessageQueueType *mq, uintptr_t data) {
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AMS_ASSERT(mq->state == MessageQueueType::State_Initialized);
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{
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/* Acquire mutex, check sendable. */
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std::scoped_lock lk(GetReference(mq->cs_queue));
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if (MessageQueueHelper::IsMessageQueueFull(mq)) {
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return false;
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}
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/* Send, signal. */
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MessageQueueHelper::JamUnsafe(mq, data);
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GetReference(mq->cv_not_empty).Broadcast();
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GetReference(mq->waitlist_not_empty).SignalAllThreads();
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}
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return true;
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}
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bool TimedJamMessageQueue(MessageQueueType *mq, uintptr_t data, TimeSpan timeout) {
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AMS_ASSERT(mq->state == MessageQueueType::State_Initialized);
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AMS_ASSERT(timeout.GetNanoSeconds() >= 0);
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{
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/* Acquire mutex, wait sendable. */
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impl::TimeoutHelper timeout_helper(timeout);
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std::scoped_lock lk(GetReference(mq->cs_queue));
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while (MessageQueueHelper::IsMessageQueueFull(mq)) {
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if (timeout_helper.TimedOut()) {
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return false;
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}
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GetReference(mq->cv_not_full).TimedWait(GetPointer(mq->cs_queue), timeout_helper);
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}
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/* Send, signal. */
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MessageQueueHelper::JamUnsafe(mq, data);
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GetReference(mq->cv_not_empty).Broadcast();
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GetReference(mq->waitlist_not_empty).SignalAllThreads();
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}
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return true;
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}
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/* Receive functionality */
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void ReceiveMessageQueue(uintptr_t *out, MessageQueueType *mq) {
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AMS_ASSERT(mq->state == MessageQueueType::State_Initialized);
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{
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/* Acquire mutex, wait receivable. */
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std::scoped_lock lk(GetReference(mq->cs_queue));
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while (MessageQueueHelper::IsMessageQueueEmpty(mq)) {
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GetReference(mq->cv_not_empty).Wait(GetPointer(mq->cs_queue));
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}
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/* Receive, signal. */
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*out = MessageQueueHelper::DequeueUnsafe(mq);
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GetReference(mq->cv_not_full).Broadcast();
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GetReference(mq->waitlist_not_full).SignalAllThreads();
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}
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}
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bool TryReceiveMessageQueue(uintptr_t *out, MessageQueueType *mq) {
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AMS_ASSERT(mq->state == MessageQueueType::State_Initialized);
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{
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/* Acquire mutex, check receivable. */
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std::scoped_lock lk(GetReference(mq->cs_queue));
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if (MessageQueueHelper::IsMessageQueueEmpty(mq)) {
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return false;
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}
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/* Receive, signal. */
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*out = MessageQueueHelper::DequeueUnsafe(mq);
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GetReference(mq->cv_not_full).Broadcast();
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GetReference(mq->waitlist_not_full).SignalAllThreads();
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}
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return true;
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}
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bool TimedReceiveMessageQueue(uintptr_t *out, MessageQueueType *mq, TimeSpan timeout) {
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AMS_ASSERT(mq->state == MessageQueueType::State_Initialized);
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AMS_ASSERT(timeout.GetNanoSeconds() >= 0);
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{
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/* Acquire mutex, wait receivable. */
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impl::TimeoutHelper timeout_helper(timeout);
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std::scoped_lock lk(GetReference(mq->cs_queue));
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while (MessageQueueHelper::IsMessageQueueEmpty(mq)) {
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if (timeout_helper.TimedOut()) {
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return false;
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}
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GetReference(mq->cv_not_empty).TimedWait(GetPointer(mq->cs_queue), timeout_helper);
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}
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/* Receive, signal. */
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*out = MessageQueueHelper::DequeueUnsafe(mq);
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GetReference(mq->cv_not_full).Broadcast();
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GetReference(mq->waitlist_not_full).SignalAllThreads();
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}
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return true;
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}
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/* Peek functionality */
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void PeekMessageQueue(uintptr_t *out, const MessageQueueType *mq) {
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AMS_ASSERT(mq->state == MessageQueueType::State_Initialized);
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{
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/* Acquire mutex, wait receivable. */
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std::scoped_lock lk(GetReference(mq->cs_queue));
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while (MessageQueueHelper::IsMessageQueueEmpty(mq)) {
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GetReference(mq->cv_not_empty).Wait(GetPointer(mq->cs_queue));
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}
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/* Peek. */
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*out = MessageQueueHelper::PeekUnsafe(mq);
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}
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}
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bool TryPeekMessageQueue(uintptr_t *out, const MessageQueueType *mq) {
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AMS_ASSERT(mq->state == MessageQueueType::State_Initialized);
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{
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/* Acquire mutex, check receivable. */
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std::scoped_lock lk(GetReference(mq->cs_queue));
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if (MessageQueueHelper::IsMessageQueueEmpty(mq)) {
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return false;
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}
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/* Peek. */
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*out = MessageQueueHelper::PeekUnsafe(mq);
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}
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return true;
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}
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bool TimedPeekMessageQueue(uintptr_t *out, const MessageQueueType *mq, TimeSpan timeout) {
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AMS_ASSERT(mq->state == MessageQueueType::State_Initialized);
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AMS_ASSERT(timeout.GetNanoSeconds() >= 0);
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{
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/* Acquire mutex, wait receivable. */
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impl::TimeoutHelper timeout_helper(timeout);
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std::scoped_lock lk(GetReference(mq->cs_queue));
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while (MessageQueueHelper::IsMessageQueueEmpty(mq)) {
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if (timeout_helper.TimedOut()) {
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return false;
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}
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GetReference(mq->cv_not_empty).TimedWait(GetPointer(mq->cs_queue), timeout_helper);
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}
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/* Peek. */
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*out = MessageQueueHelper::PeekUnsafe(mq);
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}
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return true;
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}
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void InitializeWaitableHolder(WaitableHolderType *waitable_holder, MessageQueueType *mq, MessageQueueWaitType type) {
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AMS_ASSERT(mq->state == MessageQueueType::State_Initialized);
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switch (type) {
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case MessageQueueWaitType::ForNotFull:
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util::ConstructAt(GetReference(waitable_holder->impl_storage).holder_of_mq_for_not_full_storage, mq);
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break;
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case MessageQueueWaitType::ForNotEmpty:
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util::ConstructAt(GetReference(waitable_holder->impl_storage).holder_of_mq_for_not_empty_storage, mq);
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break;
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AMS_UNREACHABLE_DEFAULT_CASE();
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}
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waitable_holder->user_data = 0;
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}
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}
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