mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-05 04:28:04 +01:00
f534d3498e
subrepo: subdir: "stratosphere/libstratosphere" merged: "0c5dab80" upstream: origin: "https://github.com/Atmosphere-NX/libstratosphere" branch: "master" commit: "0c5dab80" git-subrepo: version: "0.4.0" origin: "https://github.com/ingydotnet/git-subrepo" commit: "5d6aba9"
235 lines
6.0 KiB
C++
235 lines
6.0 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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#include <mutex>
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#include <switch.h>
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#include <stratosphere.hpp>
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void HosMessageQueue::Send(uintptr_t data) {
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/* Acquire mutex, wait sendable. */
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std::scoped_lock<HosMutex> lock(this->queue_lock);
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while (this->IsFull()) {
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this->cv_not_full.Wait(&this->queue_lock);
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}
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/* Send, signal. */
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this->SendInternal(data);
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this->cv_not_empty.WakeAll();
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}
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bool HosMessageQueue::TrySend(uintptr_t data) {
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std::scoped_lock<HosMutex> lock(this->queue_lock);
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if (this->IsFull()) {
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return false;
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}
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/* Send, signal. */
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this->SendInternal(data);
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this->cv_not_empty.WakeAll();
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return true;
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}
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bool HosMessageQueue::TimedSend(uintptr_t data, u64 timeout) {
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std::scoped_lock<HosMutex> lock(this->queue_lock);
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TimeoutHelper timeout_helper(timeout);
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while (this->IsFull()) {
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if (timeout_helper.TimedOut()) {
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return false;
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}
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this->cv_not_full.TimedWait(timeout, &this->queue_lock);
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}
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/* Send, signal. */
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this->SendInternal(data);
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this->cv_not_empty.WakeAll();
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return true;
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}
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void HosMessageQueue::SendNext(uintptr_t data) {
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/* Acquire mutex, wait sendable. */
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std::scoped_lock<HosMutex> lock(this->queue_lock);
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while (this->IsFull()) {
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this->cv_not_full.Wait(&this->queue_lock);
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}
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/* Send, signal. */
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this->SendNextInternal(data);
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this->cv_not_empty.WakeAll();
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}
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bool HosMessageQueue::TrySendNext(uintptr_t data) {
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std::scoped_lock<HosMutex> lock(this->queue_lock);
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if (this->IsFull()) {
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return false;
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}
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/* Send, signal. */
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this->SendNextInternal(data);
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this->cv_not_empty.WakeAll();
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return true;
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}
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bool HosMessageQueue::TimedSendNext(uintptr_t data, u64 timeout) {
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std::scoped_lock<HosMutex> lock(this->queue_lock);
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TimeoutHelper timeout_helper(timeout);
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while (this->IsFull()) {
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if (timeout_helper.TimedOut()) {
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return false;
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}
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this->cv_not_full.TimedWait(timeout, &this->queue_lock);
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}
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/* Send, signal. */
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this->SendNextInternal(data);
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this->cv_not_empty.WakeAll();
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return true;
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}
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void HosMessageQueue::Receive(uintptr_t *out) {
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/* Acquire mutex, wait receivable. */
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std::scoped_lock<HosMutex> lock(this->queue_lock);
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while (this->IsEmpty()) {
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this->cv_not_empty.Wait(&this->queue_lock);
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}
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/* Receive, signal. */
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*out = this->ReceiveInternal();
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this->cv_not_full.WakeAll();
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}
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bool HosMessageQueue::TryReceive(uintptr_t *out) {
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/* Acquire mutex, wait receivable. */
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std::scoped_lock<HosMutex> lock(this->queue_lock);
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if (this->IsEmpty()) {
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return false;
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}
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/* Receive, signal. */
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*out = this->ReceiveInternal();
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this->cv_not_full.WakeAll();
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return true;
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}
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bool HosMessageQueue::TimedReceive(uintptr_t *out, u64 timeout) {
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std::scoped_lock<HosMutex> lock(this->queue_lock);
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TimeoutHelper timeout_helper(timeout);
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while (this->IsEmpty()) {
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if (timeout_helper.TimedOut()) {
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return false;
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}
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this->cv_not_empty.TimedWait(timeout, &this->queue_lock);
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}
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/* Receive, signal. */
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*out = this->ReceiveInternal();
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this->cv_not_full.WakeAll();
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return true;
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}
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void HosMessageQueue::Peek(uintptr_t *out) {
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/* Acquire mutex, wait receivable. */
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std::scoped_lock<HosMutex> lock(this->queue_lock);
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while (this->IsEmpty()) {
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this->cv_not_empty.Wait(&this->queue_lock);
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}
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/* Peek. */
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*out = this->PeekInternal();
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}
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bool HosMessageQueue::TryPeek(uintptr_t *out) {
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/* Acquire mutex, wait receivable. */
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std::scoped_lock<HosMutex> lock(this->queue_lock);
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if (this->IsEmpty()) {
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return false;
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}
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/* Peek. */
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*out = this->PeekInternal();
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return true;
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}
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bool HosMessageQueue::TimedPeek(uintptr_t *out, u64 timeout) {
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std::scoped_lock<HosMutex> lock(this->queue_lock);
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TimeoutHelper timeout_helper(timeout);
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while (this->IsEmpty()) {
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if (timeout_helper.TimedOut()) {
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return false;
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}
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this->cv_not_empty.TimedWait(timeout, &this->queue_lock);
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}
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/* Peek. */
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*out = this->PeekInternal();
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return true;
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}
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void HosMessageQueue::SendInternal(uintptr_t data) {
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/* Ensure we don't corrupt the queue, but this should never happen. */
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if (this->count >= this->capacity) {
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std::abort();
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}
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/* Write data to tail of queue. */
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this->buffer[(this->count++ + this->offset) % this->capacity] = data;
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}
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void HosMessageQueue::SendNextInternal(uintptr_t data) {
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/* Ensure we don't corrupt the queue, but this should never happen. */
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if (this->count >= this->capacity) {
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std::abort();
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}
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/* Write data to head of queue. */
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this->offset = (this->offset + this->capacity - 1) % this->capacity;
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this->buffer[this->offset] = data;
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this->count++;
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}
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uintptr_t HosMessageQueue::ReceiveInternal() {
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/* Ensure we don't corrupt the queue, but this should never happen. */
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if (this->count == 0) {
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std::abort();
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}
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uintptr_t data = this->buffer[this->offset];
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this->offset = (this->offset + 1) % this->capacity;
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this->count--;
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return data;
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}
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uintptr_t HosMessageQueue::PeekInternal() {
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/* Ensure we don't corrupt the queue, but this should never happen. */
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if (this->count == 0) {
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std::abort();
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}
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return this->buffer[this->offset];
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} |