139 lines
3.0 KiB
C++
139 lines
3.0 KiB
C++
/***
|
|
|
|
Olive - Non-Linear Video Editor
|
|
Copyright (C) 2019 Olive Team
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that 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 "threadpool.h"
|
|
|
|
OLIVE_NAMESPACE_ENTER
|
|
|
|
ThreadPool::ThreadPool(QThread::Priority priority, int threads, QObject *parent) :
|
|
QObject(parent)
|
|
{
|
|
all_threads_.resize(threads ? threads : QThread::idealThreadCount());
|
|
|
|
// Create threads
|
|
for (int i=0; i<all_threads_.size(); i++) {
|
|
ThreadPoolThread* t = new ThreadPoolThread(this);
|
|
|
|
// Add to vector of all threads
|
|
all_threads_[i] = t;
|
|
|
|
// Append to list of available threads
|
|
available_threads_.push_back(t);
|
|
|
|
// Connect done signal
|
|
connect(t, &ThreadPoolThread::Done, this, &ThreadPool::ThreadDone);
|
|
|
|
// Start the thread at the given priority
|
|
t->start(priority);
|
|
}
|
|
}
|
|
|
|
ThreadPool::~ThreadPool()
|
|
{
|
|
foreach (ThreadPoolThread* thread, all_threads_) {
|
|
thread->Cancel();
|
|
thread->wait();
|
|
delete thread;
|
|
}
|
|
}
|
|
|
|
void ThreadPool::AddTicket(RenderTicketPtr ticket, bool prioritize)
|
|
{
|
|
if (prioritize) {
|
|
ticket_queue_.push_front(ticket);
|
|
} else {
|
|
ticket_queue_.push_back(ticket);
|
|
}
|
|
|
|
RunNext();
|
|
}
|
|
|
|
void ThreadPool::RunNext()
|
|
{
|
|
while (!ticket_queue_.empty() && !available_threads_.empty()) {
|
|
// Run function
|
|
RenderTicketPtr ticket = ticket_queue_.front();
|
|
ticket_queue_.pop_front();
|
|
|
|
if (!ticket->WasCancelled()) {
|
|
ThreadPoolThread* thread = available_threads_.front();
|
|
available_threads_.pop_front();
|
|
|
|
// Run the ticket in the thread, which actually just calls our virtual function RunTicket
|
|
thread->RunTicket(ticket);
|
|
}
|
|
}
|
|
}
|
|
|
|
void ThreadPool::ThreadDone()
|
|
{
|
|
ThreadPoolThread* thread = static_cast<ThreadPoolThread*>(sender());
|
|
|
|
available_threads_.push_back(thread);
|
|
|
|
RunNext();
|
|
}
|
|
|
|
ThreadPoolThread::ThreadPoolThread(ThreadPool *parent)
|
|
{
|
|
pool_ = parent;
|
|
|
|
// Ensures mutex is definitely locked by the time the thread is running
|
|
mutex_.lock();
|
|
}
|
|
|
|
ThreadPoolThread::~ThreadPoolThread()
|
|
{
|
|
mutex_.unlock();
|
|
}
|
|
|
|
void ThreadPoolThread::RunTicket(RenderTicketPtr ticket)
|
|
{
|
|
mutex_.lock();
|
|
ticket_ = ticket;
|
|
wait_cond_.wakeAll();
|
|
mutex_.unlock();
|
|
}
|
|
|
|
void ThreadPoolThread::run()
|
|
{
|
|
while (true) {
|
|
wait_cond_.wait(&mutex_);
|
|
|
|
if (ticket_) {
|
|
pool_->RunTicket(ticket_);
|
|
ticket_ = nullptr;
|
|
}
|
|
|
|
if (IsCancelled()) {
|
|
break;
|
|
} else {
|
|
emit Done();
|
|
}
|
|
}
|
|
}
|
|
|
|
void ThreadPoolThread::CancelEvent()
|
|
{
|
|
wait_cond_.wakeAll();
|
|
}
|
|
|
|
OLIVE_NAMESPACE_EXIT
|