#include <glibmm.h>
namespace
{
class ThreadProgress
{
public:
explicit ThreadProgress(int the_id);
~ThreadProgress();
int id() const;
void join();
bool unfinished() const;
private:
enum
{
ITERATIONS = 100
};
int id_;
unsigned int progress_;
void progress_increment();
void thread_function();
};
{
public:
Application();
~Application();
void run();
private:
void launch_threads();
void on_progress_finished(ThreadProgress* thread_progress);
};
template <class T>
class DeletePtr
{
typedef void argument_type;
typedef T result_type;
public:
void operator()(T ptr) const { delete ptr; }
};
ThreadProgress::ThreadProgress(int the_id) : thread_(nullptr), id_(the_id), progress_(0)
{
signal_increment_.connect(
sigc::mem_fun(*
this, &ThreadProgress::progress_increment));
}
ThreadProgress::~ThreadProgress()
{
g_return_if_fail(thread_ == nullptr);
}
int
ThreadProgress::id() const
{
return id_;
}
void
{
thread_ =
new std::thread([
this]() { thread_function(); });
}
void
ThreadProgress::join()
{
thread_->join();
delete thread_;
thread_ = nullptr;
}
bool
ThreadProgress::unfinished() const
{
return (progress_ < ITERATIONS);
}
ThreadProgress::signal_finished()
{
return signal_finished_;
}
void
ThreadProgress::progress_increment()
{
++progress_;
if (progress_ >= ITERATIONS)
signal_finished_();
}
void
ThreadProgress::thread_function()
{
for (auto i = 0; i < ITERATIONS; ++i)
{
signal_increment_();
}
}
{
try
{
{
ThreadProgress* const progress = new ThreadProgress(i + 1);
progress_threads_[i] = progress;
progress->signal_finished().connect(
}
}
catch (...)
{
std::for_each(progress_threads_.begin(), progress_threads_.end(), DeletePtr<ThreadProgress*>());
throw;
}
}
Application::~Application()
{
std::for_each(progress_threads_.begin(), progress_threads_.end(), DeletePtr<ThreadProgress*>());
}
void
Application::run()
{
main_loop_->run();
}
void
Application::launch_threads()
{
}
void
Application::on_progress_finished(ThreadProgress* thread_progress)
{
thread_progress->join();
if (
std::find_if(progress_threads_.begin(), progress_threads_.end(),
std::mem_fn(&ThreadProgress::unfinished)) == progress_threads_.end())
{
main_loop_->quit();
}
}
}
int
main(int, char**)
{
Application application;
application.run();
return 0;
}