You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
87 lines
2.8 KiB
C++
87 lines
2.8 KiB
C++
/*
|
|
* This file is part of OpenTTD.
|
|
* OpenTTD 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, version 2.
|
|
* OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/** @file progress.cpp Functions for modal progress windows. */
|
|
|
|
#include "stdafx.h"
|
|
#include "progress.h"
|
|
#include "video/video_driver.hpp"
|
|
|
|
#include <chrono>
|
|
#include <mutex>
|
|
#include <condition_variable>
|
|
#if defined(__MINGW32__)
|
|
#include "3rdparty/mingw-std-threads/mingw.mutex.h"
|
|
#include "3rdparty/mingw-std-threads/mingw.condition_variable.h"
|
|
#endif
|
|
|
|
#include "safeguards.h"
|
|
|
|
/** Are we in a modal progress or not? */
|
|
bool _in_modal_progress = false;
|
|
bool _first_in_modal_loop = false;
|
|
/** Threading usable for modal progress? */
|
|
bool _use_threaded_modal_progress = true;
|
|
/** Rights for the performing work. */
|
|
std::mutex _modal_progress_work_mutex;
|
|
/** Rights for the painting. */
|
|
std::mutex _modal_progress_paint_mutex;
|
|
|
|
static std::mutex _modal_progress_cv_mutex;
|
|
static std::condition_variable _modal_progress_cv;
|
|
|
|
/**
|
|
* Set the modal progress state.
|
|
* @note Makes IsFirstModalProgressLoop return true for the next call.
|
|
* @param state The new state; are we modal or not?
|
|
*/
|
|
void SetModalProgress(bool state)
|
|
{
|
|
_modal_progress_cv_mutex.lock();
|
|
_in_modal_progress = state;
|
|
_first_in_modal_loop = true;
|
|
_modal_progress_cv_mutex.unlock();
|
|
if (!state) _modal_progress_cv.notify_all();
|
|
}
|
|
|
|
/**
|
|
* Check whether this is the first modal progress loop.
|
|
* @note Set by SetModalProgress, unset by calling this method.
|
|
* @return True if this is the first loop.
|
|
*/
|
|
bool IsFirstModalProgressLoop()
|
|
{
|
|
bool ret = _first_in_modal_loop;
|
|
_first_in_modal_loop = false;
|
|
return ret;
|
|
}
|
|
|
|
void SleepWhileModalProgress(int milliseconds)
|
|
{
|
|
std::unique_lock<std::mutex> lk(_modal_progress_cv_mutex);
|
|
_modal_progress_cv.wait_for(lk, std::chrono::milliseconds(milliseconds), []{ return !_in_modal_progress; });
|
|
}
|
|
|
|
void WaitUntilModalProgressCompleted()
|
|
{
|
|
if (HasModalProgress()) {
|
|
_modal_progress_paint_mutex.unlock();
|
|
_modal_progress_work_mutex.unlock();
|
|
|
|
{
|
|
std::unique_lock<std::mutex> lk(_modal_progress_cv_mutex);
|
|
_modal_progress_cv.wait(lk, []{ return !_in_modal_progress; });
|
|
}
|
|
|
|
/* Modal progress thread may need blitter access while we are waiting for it. */
|
|
VideoDriver::GetInstance()->ReleaseBlitterLock();
|
|
_modal_progress_paint_mutex.lock();
|
|
VideoDriver::GetInstance()->AcquireBlitterLock();
|
|
_modal_progress_work_mutex.lock();
|
|
}
|
|
}
|