mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-23 12:51:13 +00:00
111 lines
3.6 KiB
C++
111 lines
3.6 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 <mesosphere.hpp>
|
|
|
|
namespace ams::kern {
|
|
|
|
void KWorkerTaskManager::Initialize(WorkerType wt, s32 priority) {
|
|
/* Set type, other members already initialized in constructor. */
|
|
this->type = wt;
|
|
|
|
/* Reserve a thread from the system limit. */
|
|
MESOSPHERE_ABORT_UNLESS(Kernel::GetSystemResourceLimit().Reserve(ams::svc::LimitableResource_ThreadCountMax, 1));
|
|
|
|
/* Create a new thread. */
|
|
this->thread = KThread::Create();
|
|
MESOSPHERE_ABORT_UNLESS(this->thread != nullptr);
|
|
|
|
/* Launch the new thread. */
|
|
MESOSPHERE_R_ABORT_UNLESS(KThread::InitializeKernelThread(this->thread, ThreadFunction, reinterpret_cast<uintptr_t>(this), priority, cpu::NumCores - 1));
|
|
|
|
/* Register the new thread. */
|
|
KThread::Register(this->thread);
|
|
|
|
/* Run the thread. */
|
|
this->thread->Run();
|
|
}
|
|
|
|
void KWorkerTaskManager::AddTask(WorkerType type, KWorkerTask *task) {
|
|
MESOSPHERE_ASSERT(type <= WorkerType_Count);
|
|
Kernel::GetWorkerTaskManager(type).AddTask(task);
|
|
}
|
|
|
|
void KWorkerTaskManager::ThreadFunction(uintptr_t arg) {
|
|
reinterpret_cast<KWorkerTaskManager *>(arg)->ThreadFunctionImpl();
|
|
}
|
|
|
|
void KWorkerTaskManager::ThreadFunctionImpl() {
|
|
while (true) {
|
|
KWorkerTask *task = nullptr;
|
|
|
|
/* Get a worker task. */
|
|
{
|
|
KScopedSchedulerLock sl;
|
|
task = this->GetTask();
|
|
|
|
if (task == nullptr) {
|
|
/* If there's nothing to do, set ourselves as waiting. */
|
|
this->active = false;
|
|
this->thread->SetState(KThread::ThreadState_Waiting);
|
|
continue;
|
|
}
|
|
|
|
this->active = true;
|
|
}
|
|
|
|
/* Do the task. */
|
|
task->DoWorkerTask();
|
|
}
|
|
}
|
|
|
|
KWorkerTask *KWorkerTaskManager::GetTask() {
|
|
MESOSPHERE_ASSERT(KScheduler::IsSchedulerLockedByCurrentThread());
|
|
KWorkerTask *next = this->head_task;
|
|
if (next) {
|
|
/* Advance the list. */
|
|
if (this->head_task == this->tail_task) {
|
|
this->head_task = nullptr;
|
|
this->tail_task = nullptr;
|
|
} else {
|
|
this->head_task = this->head_task->GetNextTask();
|
|
}
|
|
|
|
/* Clear the next task's next. */
|
|
next->SetNextTask(nullptr);
|
|
}
|
|
return next;
|
|
}
|
|
|
|
void KWorkerTaskManager::AddTask(KWorkerTask *task) {
|
|
KScopedSchedulerLock sl;
|
|
MESOSPHERE_ASSERT(task->GetNextTask() == nullptr);
|
|
|
|
/* Insert the task. */
|
|
if (this->tail_task) {
|
|
this->tail_task->SetNextTask(task);
|
|
this->tail_task = task;
|
|
} else {
|
|
this->head_task = task;
|
|
this->tail_task = task;
|
|
|
|
/* Make ourselves active if we need to. */
|
|
if (!this->active) {
|
|
this->thread->SetState(KThread::ThreadState_Runnable);
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|