mirror of https://github.com/polybar/polybar.git
47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
#pragma once
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#include "modules/meta/base.hpp"
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POLYBAR_NS
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namespace modules {
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template <class Impl>
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class event_module : public module<Impl> {
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public:
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using module<Impl>::module;
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void start() override {
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this->module<Impl>::start();
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this->m_mainthread = thread(&event_module::runner, this);
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}
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protected:
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void runner() {
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this->m_log.trace("%s: Thread id = %i", this->name(), concurrency_util::thread_id(this_thread::get_id()));
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try {
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// warm up module output before entering the loop
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std::unique_lock<std::mutex> guard(this->m_updatelock);
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CAST_MOD(Impl)->update();
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CAST_MOD(Impl)->broadcast();
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guard.unlock();
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const auto check = [&]() -> bool {
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std::lock_guard<std::mutex> guard(this->m_updatelock);
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return CAST_MOD(Impl)->has_event() && CAST_MOD(Impl)->update();
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};
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while (this->running()) {
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if (check()) {
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CAST_MOD(Impl)->broadcast();
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}
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CAST_MOD(Impl)->idle();
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}
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} catch (const exception& err) {
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CAST_MOD(Impl)->halt(err.what());
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}
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}
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};
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} // namespace modules
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POLYBAR_NS_END
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