polybar-dwm/include/modules/meta/timer_module.hpp
2017-01-27 13:29:10 +01:00

50 lines
1.1 KiB
C++

#pragma once
#include "modules/meta/base.hpp"
POLYBAR_NS
namespace modules {
using interval_t = chrono::duration<double>;
template <class Impl>
class timer_module : public module<Impl> {
public:
using module<Impl>::module;
void start() {
this->m_mainthread = thread(&timer_module::runner, this);
}
protected:
void runner() {
this->m_log.trace("%s: Thread id = %i", this->name(), concurrency_util::thread_id(this_thread::get_id()));
const auto check = [&]() -> bool {
std::unique_lock<std::mutex> guard(this->m_updatelock);
return CAST_MOD(Impl)->update();
};
// warm up module output before entering the loop
check();
CAST_MOD(Impl)->broadcast();
try {
while (this->running()) {
if (check()) {
CAST_MOD(Impl)->broadcast();
}
CAST_MOD(Impl)->sleep(m_interval);
}
} catch (const exception& err) {
CAST_MOD(Impl)->halt(err.what());
}
}
protected:
interval_t m_interval{1.0};
};
}
POLYBAR_NS_END