mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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90 lines
2.8 KiB
C++
90 lines
2.8 KiB
C++
/*
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* Copyright (c) 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 <mesosphere.hpp>
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namespace ams::kern {
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void KInterruptTaskManager::TaskQueue::Enqueue(KInterruptTask *task) {
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MESOSPHERE_ASSERT(task != m_head);
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MESOSPHERE_ASSERT(task != m_tail);
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MESOSPHERE_AUDIT(task->GetNextTask() == nullptr);
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/* Insert the task into the queue. */
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if (m_tail != nullptr) {
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m_tail->SetNextTask(task);
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} else {
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m_head = task;
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}
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m_tail = task;
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/* Set the next task for auditing. */
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#if defined (MESOSPHERE_BUILD_FOR_AUDITING)
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task->SetNextTask(GetDummyInterruptTask());
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#endif
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}
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void KInterruptTaskManager::TaskQueue::Dequeue() {
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MESOSPHERE_ASSERT(m_head != nullptr);
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MESOSPHERE_ASSERT(m_tail != nullptr);
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MESOSPHERE_AUDIT(m_tail->GetNextTask() == GetDummyInterruptTask());
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/* Pop the task from the front of the queue. */
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KInterruptTask *old_head = m_head;
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if (m_head == m_tail) {
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m_head = nullptr;
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m_tail = nullptr;
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} else {
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m_head = m_head->GetNextTask();
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}
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#if defined (MESOSPHERE_BUILD_FOR_AUDITING)
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old_head->SetNextTask(nullptr);
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#else
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AMS_UNUSED(old_head);
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#endif
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}
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void KInterruptTaskManager::EnqueueTask(KInterruptTask *task) {
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MESOSPHERE_ASSERT(!KInterruptManager::AreInterruptsEnabled());
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/* Enqueue the task and signal the scheduler. */
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m_task_queue.Enqueue(task);
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Kernel::GetScheduler().SetInterruptTaskRunnable();
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}
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void KInterruptTaskManager::DoTasks() {
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/* Execute pending tasks. */
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const s64 start_time = KHardwareTimer::GetTick();
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for (KInterruptTask *task = m_task_queue.GetHead(); task != nullptr; task = m_task_queue.GetHead()) {
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/* Dequeue the task. */
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m_task_queue.Dequeue();
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/* Do the task with interrupts temporarily enabled. */
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{
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KScopedInterruptEnable ei;
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task->DoTask();
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}
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}
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const s64 end_time = KHardwareTimer::GetTick();
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/* Increment the time we've spent executing. */
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m_cpu_time += end_time - start_time;
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}
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}
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