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vcmi/lib/LoadProgress.cpp
2023-08-22 20:10:20 +04:00

136 lines
2.5 KiB
C++

/*
* LoadProgress.cpp, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#include "StdInc.h"
#include "LoadProgress.h"
using namespace Load;
Progress::Progress(): _progress(std::numeric_limits<Type>::min())
{
setupSteps(100);
}
Progress::Progress(int steps): _progress(std::numeric_limits<Type>::min())
{
setupSteps(steps);
}
Type Progress::get() const
{
if(_step >= _maxSteps)
return _target;
if(!_maxSteps)
return _progress;
return static_cast<int>(_progress) + _step * static_cast<int>(_target - _progress) / _maxSteps;
}
void Progress::set(Type p)
{
_progress = p;
}
bool Progress::finished() const
{
return get() == std::numeric_limits<Type>::max();
}
void Progress::reset(int s)
{
_progress = std::numeric_limits<Type>::min();
setupSteps(s);
}
void Progress::finish()
{
_progress = _target = std::numeric_limits<Type>::max();
_step = std::numeric_limits<Type>::min();
_maxSteps = std::numeric_limits<Type>::min();
}
void Progress::setupSteps(int s)
{
setupStepsTill(s, std::numeric_limits<Type>::max());
}
void Progress::setupStepsTill(int s, Type p)
{
if(finished())
return;
if(_step > std::numeric_limits<Type>::min())
_progress = get();
_step = std::numeric_limits<Type>::min();
_maxSteps = s;
_target = p;
}
void Progress::step(int count)
{
if(_step + count > _maxSteps)
{
_step = _maxSteps.load();
}
else
{
_step += count;
}
}
void ProgressAccumulator::include(const Progress & p)
{
boost::unique_lock<boost::mutex> guard(_mx);
_progress.emplace_back(p);
}
void ProgressAccumulator::exclude(const Progress & p)
{
boost::unique_lock<boost::mutex> guard(_mx);
for(auto i = _progress.begin(); i != _progress.end(); ++i)
{
if(&i->get() == &p)
{
_accumulated += static_cast<long long>(p.get()) * p._maxSteps;
_steps += p._maxSteps;
_progress.erase(i);
return;
}
}
}
bool ProgressAccumulator::finished() const
{
boost::unique_lock<boost::mutex> guard(_mx);
for(auto i : _progress)
if(!i.get().finished())
return false;
return true;
}
Type ProgressAccumulator::get() const
{
boost::unique_lock<boost::mutex> guard(_mx);
auto sum = _accumulated;
auto totalSteps = _steps;
for(auto p : _progress)
{
sum += static_cast<long long>(p.get().get()) * p.get()._maxSteps;
totalSteps += p.get()._maxSteps;
}
if(totalSteps)
sum /= totalSteps;
return static_cast<Type>(sum);
}