mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-18 01:46:47 +00:00
320 lines
11 KiB
C++
320 lines
11 KiB
C++
/*
|
|
* Copyright (c) 2018-2020 Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <stratosphere.hpp>
|
|
#include "impl/os_timeout_helper.hpp"
|
|
#include "impl/os_message_queue_helper.hpp"
|
|
|
|
namespace ams::os {
|
|
|
|
namespace {
|
|
|
|
using MessageQueueHelper = impl::MessageQueueHelper<LightMessageQueueType>;
|
|
|
|
template<bool ClearEvent, auto EnqueueFunction>
|
|
bool TryEnqueueLightMessageQueueImpl(LightMessageQueueType *mq, uintptr_t data) {
|
|
/* Perform the enqueue. */
|
|
{
|
|
/* Acquire exclusive access to the queue. */
|
|
std::scoped_lock lk(util::GetReference(mq->mutex_queue));
|
|
|
|
/* Check that we can enqueue. */
|
|
if (MessageQueueHelper::IsMessageQueueFull(mq)) {
|
|
/* If we should, clear the event. */
|
|
if constexpr (ClearEvent) {
|
|
util::GetReference(mq->ev_not_full).Clear();
|
|
}
|
|
|
|
/* We can't enqueue because we're full. */
|
|
return false;
|
|
}
|
|
|
|
/* Enqueue the data. */
|
|
EnqueueFunction(mq, data);
|
|
}
|
|
|
|
/* Signal that we're not empty. */
|
|
util::GetReference(mq->ev_not_empty).SignalWithManualClear();
|
|
|
|
return true;
|
|
}
|
|
|
|
template<bool ClearEvent>
|
|
bool TrySendLightMessageQueueImpl(LightMessageQueueType *mq, uintptr_t data) {
|
|
return TryEnqueueLightMessageQueueImpl<ClearEvent, MessageQueueHelper::EnqueueUnsafe>(mq, data);
|
|
}
|
|
|
|
template<bool ClearEvent>
|
|
bool TryJamLightMessageQueueImpl(LightMessageQueueType *mq, uintptr_t data) {
|
|
return TryEnqueueLightMessageQueueImpl<ClearEvent, MessageQueueHelper::JamUnsafe>(mq, data);
|
|
}
|
|
|
|
template<bool ClearEvent>
|
|
bool TryReceiveLightMessageQueueImpl(uintptr_t *out, LightMessageQueueType *mq) {
|
|
/* Perform the receive. */
|
|
{
|
|
/* Acquire exclusive access to the queue. */
|
|
std::scoped_lock lk(util::GetReference(mq->mutex_queue));
|
|
|
|
/* Check that we can receive. */
|
|
if (MessageQueueHelper::IsMessageQueueEmpty(mq)) {
|
|
/* If we should, clear the event. */
|
|
if constexpr (ClearEvent) {
|
|
util::GetReference(mq->ev_not_empty).Clear();
|
|
}
|
|
|
|
/* We can't enqueue because we're full. */
|
|
return false;
|
|
}
|
|
|
|
/* Receive the data. */
|
|
*out = MessageQueueHelper::DequeueUnsafe(mq);
|
|
}
|
|
|
|
/* Signal that we're not full. */
|
|
util::GetReference(mq->ev_not_full).SignalWithManualClear();
|
|
|
|
return true;
|
|
}
|
|
|
|
template<bool ClearEvent>
|
|
bool TryPeekLightMessageQueueImpl(uintptr_t *out, const LightMessageQueueType *mq) {
|
|
/* Perform the peek. */
|
|
{
|
|
/* Acquire exclusive access to the queue. */
|
|
std::scoped_lock lk(util::GetReference(mq->mutex_queue));
|
|
|
|
/* Check that we can peek. */
|
|
if (MessageQueueHelper::IsMessageQueueEmpty(mq)) {
|
|
/* If we should, clear the event. */
|
|
if constexpr (ClearEvent) {
|
|
util::GetReference(mq->ev_not_empty).Clear();
|
|
}
|
|
|
|
/* We can't enqueue because we're full. */
|
|
return false;
|
|
}
|
|
|
|
/* Peek the data. */
|
|
*out = MessageQueueHelper::PeekUnsafe(mq);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
}
|
|
|
|
void InitializeLightMessageQueue(LightMessageQueueType *mq, uintptr_t *buffer, size_t count) {
|
|
/* Check pre-conditions. */
|
|
AMS_ASSERT(buffer != nullptr);
|
|
AMS_ASSERT(count >= 1);
|
|
|
|
/* Construct objects. */
|
|
util::ConstructAt(mq->mutex_queue);
|
|
util::ConstructAt(mq->ev_not_empty, false);
|
|
util::ConstructAt(mq->ev_not_full, true);
|
|
|
|
/* Set member variables. */
|
|
mq->buffer = buffer;
|
|
mq->capacity = static_cast<s32>(count);
|
|
mq->count = 0;
|
|
mq->offset = 0;
|
|
|
|
/* Mark initialized. */
|
|
mq->state = LightMessageQueueType::State_Initialized;
|
|
}
|
|
|
|
void FinalizeLightMessageQueue(LightMessageQueueType *mq) {
|
|
/* Check pre-conditions. */
|
|
AMS_ASSERT(mq->state == LightMessageQueueType::State_Initialized);
|
|
|
|
/* Mark uninitialized. */
|
|
mq->state = LightMessageQueueType::State_NotInitialized;
|
|
|
|
/* Destroy objects. */
|
|
util::DestroyAt(mq->ev_not_empty);
|
|
util::DestroyAt(mq->ev_not_full);
|
|
util::DestroyAt(mq->mutex_queue);
|
|
}
|
|
|
|
/* Sending (FIFO functionality) */
|
|
void SendLightMessageQueue(LightMessageQueueType *mq, uintptr_t data) {
|
|
/* Check pre-conditions. */
|
|
AMS_ASSERT(mq->state == LightMessageQueueType::State_Initialized);
|
|
|
|
/* Repeatedly try to send. */
|
|
while (!TrySendLightMessageQueueImpl<true>(mq, data)) {
|
|
/* Wait until we can try to send again. */
|
|
util::GetReference(mq->ev_not_full).WaitWithManualClear();
|
|
}
|
|
}
|
|
|
|
bool TrySendLightMessageQueue(LightMessageQueueType *mq, uintptr_t data) {
|
|
/* Check pre-conditions. */
|
|
AMS_ASSERT(mq->state == LightMessageQueueType::State_Initialized);
|
|
|
|
/* Try to send. */
|
|
return TrySendLightMessageQueueImpl<false>(mq, data);
|
|
}
|
|
|
|
bool TimedSendLightMessageQueue(LightMessageQueueType *mq, uintptr_t data, TimeSpan timeout) {
|
|
/* Check pre-conditions. */
|
|
AMS_ASSERT(mq->state == LightMessageQueueType::State_Initialized);
|
|
AMS_ASSERT(timeout.GetNanoSeconds() >= 0);
|
|
|
|
/* Create timeout helper. */
|
|
impl::TimeoutHelper timeout_helper(timeout);
|
|
|
|
/* Repeatedly try to send. */
|
|
while (!TrySendLightMessageQueueImpl<true>(mq, data)) {
|
|
/* Check if we're timed out. */
|
|
if (timeout_helper.TimedOut()) {
|
|
return false;
|
|
}
|
|
|
|
/* Wait until we can try to send again. */
|
|
util::GetReference(mq->ev_not_full).TimedWaitWithManualClear(timeout_helper);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Jamming (LIFO functionality) */
|
|
void JamLightMessageQueue(LightMessageQueueType *mq, uintptr_t data) {
|
|
/* Check pre-conditions. */
|
|
AMS_ASSERT(mq->state == LightMessageQueueType::State_Initialized);
|
|
|
|
/* Repeatedly try to jam. */
|
|
while (!TryJamLightMessageQueueImpl<true>(mq, data)) {
|
|
/* Wait until we can try to jam again. */
|
|
util::GetReference(mq->ev_not_full).WaitWithManualClear();
|
|
}
|
|
}
|
|
|
|
bool TryJamLightMessageQueue(LightMessageQueueType *mq, uintptr_t data) {
|
|
/* Check pre-conditions. */
|
|
AMS_ASSERT(mq->state == LightMessageQueueType::State_Initialized);
|
|
|
|
/* Try to jam. */
|
|
return TryJamLightMessageQueueImpl<false>(mq, data);
|
|
}
|
|
|
|
bool TimedJamLightMessageQueue(LightMessageQueueType *mq, uintptr_t data, TimeSpan timeout) {
|
|
/* Check pre-conditions. */
|
|
AMS_ASSERT(mq->state == LightMessageQueueType::State_Initialized);
|
|
AMS_ASSERT(timeout.GetNanoSeconds() >= 0);
|
|
|
|
/* Create timeout helper. */
|
|
impl::TimeoutHelper timeout_helper(timeout);
|
|
|
|
/* Repeatedly try to jam. */
|
|
while (!TryJamLightMessageQueueImpl<true>(mq, data)) {
|
|
/* Check if we're timed out. */
|
|
if (timeout_helper.TimedOut()) {
|
|
return false;
|
|
}
|
|
|
|
/* Wait until we can try to jam again. */
|
|
util::GetReference(mq->ev_not_full).TimedWaitWithManualClear(timeout_helper);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Receive functionality */
|
|
void ReceiveLightMessageQueue(uintptr_t *out, LightMessageQueueType *mq) {
|
|
/* Check pre-conditions. */
|
|
AMS_ASSERT(mq->state == LightMessageQueueType::State_Initialized);
|
|
|
|
/* Repeatedly try to receive. */
|
|
while (!TryReceiveLightMessageQueueImpl<true>(out, mq)) {
|
|
/* Wait until we can try to receive again. */
|
|
util::GetReference(mq->ev_not_empty).WaitWithManualClear();
|
|
}
|
|
}
|
|
|
|
bool TryReceiveLightMessageQueue(uintptr_t *out, LightMessageQueueType *mq) {
|
|
/* Check pre-conditions. */
|
|
AMS_ASSERT(mq->state == LightMessageQueueType::State_Initialized);
|
|
|
|
/* Try to receive. */
|
|
return TryReceiveLightMessageQueueImpl<false>(out, mq);
|
|
}
|
|
|
|
bool TimedReceiveLightMessageQueue(uintptr_t *out, LightMessageQueueType *mq, TimeSpan timeout) {
|
|
/* Check pre-conditions. */
|
|
AMS_ASSERT(mq->state == LightMessageQueueType::State_Initialized);
|
|
AMS_ASSERT(timeout.GetNanoSeconds() >= 0);
|
|
|
|
/* Create timeout helper. */
|
|
impl::TimeoutHelper timeout_helper(timeout);
|
|
|
|
/* Repeatedly try to receive. */
|
|
while (!TryReceiveLightMessageQueueImpl<true>(out, mq)) {
|
|
/* Check if we're timed out. */
|
|
if (timeout_helper.TimedOut()) {
|
|
return false;
|
|
}
|
|
|
|
/* Wait until we can try to receive again. */
|
|
util::GetReference(mq->ev_not_empty).TimedWaitWithManualClear(timeout_helper);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Peek functionality */
|
|
void PeekLightMessageQueue(uintptr_t *out, const LightMessageQueueType *mq) {
|
|
/* Check pre-conditions. */
|
|
AMS_ASSERT(mq->state == LightMessageQueueType::State_Initialized);
|
|
|
|
/* Repeatedly try to peek. */
|
|
while (!TryPeekLightMessageQueueImpl<true>(out, mq)) {
|
|
/* Wait until we can try to peek again. */
|
|
util::GetReference(mq->ev_not_empty).WaitWithManualClear();
|
|
}
|
|
}
|
|
|
|
bool TryPeekLightMessageQueue(uintptr_t *out, const LightMessageQueueType *mq) {
|
|
/* Check pre-conditions. */
|
|
AMS_ASSERT(mq->state == LightMessageQueueType::State_Initialized);
|
|
|
|
/* Try to peek. */
|
|
return TryPeekLightMessageQueueImpl<false>(out, mq);
|
|
}
|
|
|
|
bool TimedPeekLightMessageQueue(uintptr_t *out, const LightMessageQueueType *mq, TimeSpan timeout) {
|
|
/* Check pre-conditions. */
|
|
AMS_ASSERT(mq->state == LightMessageQueueType::State_Initialized);
|
|
AMS_ASSERT(timeout.GetNanoSeconds() >= 0);
|
|
|
|
/* Create timeout helper. */
|
|
impl::TimeoutHelper timeout_helper(timeout);
|
|
|
|
/* Repeatedly try to peek. */
|
|
while (!TryPeekLightMessageQueueImpl<true>(out, mq)) {
|
|
/* Check if we're timed out. */
|
|
if (timeout_helper.TimedOut()) {
|
|
return false;
|
|
}
|
|
|
|
/* Wait until we can try to peek again. */
|
|
util::GetReference(mq->ev_not_empty).TimedWaitWithManualClear(timeout_helper);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
}
|