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#include "nw4r/snd/snd_TaskManager.h"
/* Original source:
* kiwi515/ogws
* src/nw4r/snd/snd_TaskManager.cpp
*/
/*******************************************************************************
* headers
*/
#include <decomp.h>
#include "common.h" // nullptr
#include "nw4r/snd/snd_global.h"
#include "nw4r/snd/snd_Task.h"
#include "nw4r/ut/ut_Lock.h" // ut::AutoInterruptLock
#include <rvl/OS/OSThread.h>
#include "nw4r/NW4RAssert.hpp"
/*******************************************************************************
* functions
*/
namespace nw4r { namespace snd { namespace detail {
TaskManager &TaskManager::GetInstance()
{
static TaskManager instance;
return instance;
}
TaskManager::TaskManager() :
mCurrentTask (nullptr),
mCancelWaitTaskFlag (false)
{
OSInitThreadQueue(&mAppendThreadQueue);
OSInitThreadQueue(&mDoneThreadQueue);
}
void TaskManager::AppendTask(Task *task, TaskPriority priority)
{
// specifically not the source variant
NW4RAssertHeaderClampedLValue_Line(67, priority, PRIORITY_LOW,
PRIORITY_NUM);
ut::AutoInterruptLock lock;
task->mBusyFlag = true;
mTaskList[priority].PushBack(task);
OSWakeupThread(&mAppendThreadQueue);
}
// TaskManager::FindTask, probably
// DECOMP_FORCE_CLASS_METHOD(Task::LinkList::Iterator, operator *());
Task *TaskManager::GetNextTask(TaskPriority priority, bool doRemove)
{
ut::AutoInterruptLock lock;
if (mTaskList[priority].IsEmpty())
return nullptr;
Task *task = &mTaskList[priority].GetFront();
if (doRemove)
mTaskList[priority].PopFront();
return task;
}
Task *TaskManager::PopTask()
{
ut::AutoInterruptLock lock;
Task *task;
if ((task = GetNextTask(PRIORITY_HIGH, true)))
return task;
if ((task = GetNextTask(PRIORITY_MIDDLE, true)))
return task;
if ((task = GetNextTask(PRIORITY_LOW, true)))
return task;
return nullptr;
}
Task *TaskManager::GetNextTask()
{
ut::AutoInterruptLock lock;
Task *task;
if ((task = GetNextTask(PRIORITY_HIGH, false)))
return task;
if ((task = GetNextTask(PRIORITY_MIDDLE, false)))
return task;
if ((task = GetNextTask(PRIORITY_LOW, false)))
return task;
return nullptr;
}
Task *TaskManager::ExecuteTask()
{
Task *task = PopTask();
if (!task)
return nullptr;
mCurrentTask = task;
task->mBusyFlag = false;
task->Execute();
mCurrentTask = nullptr;
OSWakeupThread(&mDoneThreadQueue);
return task;
}
void TaskManager::CancelTask(Task *task)
{
ut::AutoInterruptLock lock;
if (task == mCurrentTask)
{
task->OnCancel();
while (task == mCurrentTask)
OSSleepThread(&mDoneThreadQueue);
}
else
{
for (int i = 0; i < PRIORITY_NUM; i++)
{
TaskPriority priority = static_cast<TaskPriority>(i);
NW4R_RANGE_FOR_NO_AUTO_INC(itr, mTaskList[priority])
{
decltype(itr) curItr = itr++;
if (&(*curItr) == task)
{
mTaskList[priority].Erase(curItr);
curItr->mBusyFlag = false;
curItr->Cancel();
break;
}
}
}
}
}
void TaskManager::CancelAllTask()
{
ut::AutoInterruptLock lock;
for (int i = 0; i < PRIORITY_NUM; i++)
{
TaskPriority priority = static_cast<TaskPriority>(i);
Task::LinkList &list = mTaskList[priority];
while (!list.IsEmpty())
{
Task &task = list.GetBack();
list.PopBack();
task.mBusyFlag = false;
task.Cancel();
}
}
if (mCurrentTask)
{
mCurrentTask->OnCancel();
while (mCurrentTask)
OSSleepThread(&mDoneThreadQueue);
}
}
void TaskManager::WaitTask()
{
ut::AutoInterruptLock lockIntr;
mCancelWaitTaskFlag = false;
while (!GetNextTask() && !mCancelWaitTaskFlag) // TODO: implies volatile?
OSSleepThread(&mAppendThreadQueue);
}
void TaskManager::CancelWaitTask()
{
ut::AutoInterruptLock lockIntr;
mCancelWaitTaskFlag = true;
OSWakeupThread(&mAppendThreadQueue);
}
}}} // namespace nw4r::snd::detail
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