Waybar/src/modules/cpu/common.cpp

86 lines
3.0 KiB
C++
Raw Normal View History

2018-08-08 23:54:33 +00:00
#include "modules/cpu.hpp"
2018-12-18 16:30:54 +00:00
waybar::modules::Cpu::Cpu(const std::string& id, const Json::Value& config)
: ALabel(config, "cpu", id, "{usage}%", 10) {
2018-11-23 10:57:37 +00:00
thread_ = [this] {
2018-08-20 12:50:45 +00:00
dp.emit();
2018-11-23 10:57:37 +00:00
thread_.sleep_for(interval_);
2018-08-08 23:54:33 +00:00
};
}
2018-08-08 23:54:33 +00:00
2019-04-18 15:52:00 +00:00
auto waybar::modules::Cpu::update() -> void {
// TODO: as creating dynamic fmt::arg arrays is buggy we have to calc both
auto cpu_load = getCpuLoad();
auto [cpu_usage, tooltip] = getCpuUsage();
2021-02-02 22:33:33 +00:00
auto [max_frequency, min_frequency, avg_frequency] = getCpuFrequency();
if (tooltipEnabled()) {
label_.set_tooltip_text(tooltip);
2019-02-22 10:35:26 +00:00
}
auto format = format_;
auto state = getState(cpu_usage);
if (!state.empty() && config_["format-" + state].isString()) {
format = config_["format-" + state].asString();
}
if (format.empty()) {
event_box_.hide();
} else {
event_box_.show();
2021-02-02 22:33:33 +00:00
label_.set_markup(fmt::format(format,
fmt::arg("load", cpu_load),
fmt::arg("usage", cpu_usage),
fmt::arg("max_frequency", max_frequency),
fmt::arg("min_frequency", min_frequency),
fmt::arg("avg_frequency", avg_frequency)));
}
2020-04-12 16:30:21 +00:00
// Call parent update
ALabel::update();
2018-11-15 13:44:43 +00:00
}
2021-03-12 19:58:51 +00:00
double waybar::modules::Cpu::getCpuLoad() {
double load[1];
if (getloadavg(load, 1) != -1) {
2021-03-12 19:58:51 +00:00
return load[0];
2018-11-15 13:44:43 +00:00
}
throw std::runtime_error("Can't get Cpu load");
}
2019-04-18 15:52:00 +00:00
std::tuple<uint16_t, std::string> waybar::modules::Cpu::getCpuUsage() {
2018-11-15 13:44:43 +00:00
if (prev_times_.empty()) {
prev_times_ = parseCpuinfo();
2018-12-26 10:13:36 +00:00
std::this_thread::sleep_for(std::chrono::milliseconds(100));
2018-08-09 10:05:48 +00:00
}
2018-11-15 13:44:43 +00:00
std::vector<std::tuple<size_t, size_t>> curr_times = parseCpuinfo();
2019-04-18 15:52:00 +00:00
std::string tooltip;
uint16_t usage = 0;
2018-11-15 13:44:43 +00:00
for (size_t i = 0; i < curr_times.size(); ++i) {
auto [curr_idle, curr_total] = curr_times[i];
auto [prev_idle, prev_total] = prev_times_[i];
const float delta_idle = curr_idle - prev_idle;
const float delta_total = curr_total - prev_total;
2019-04-18 15:52:00 +00:00
uint16_t tmp = 100 * (1 - delta_idle / delta_total);
if (i == 0) {
2018-11-15 13:44:43 +00:00
usage = tmp;
tooltip = fmt::format("Total: {}%", tmp);
} else {
2018-11-15 13:44:43 +00:00
tooltip = tooltip + fmt::format("\nCore{}: {}%", i - 1, tmp);
}
}
2018-11-15 13:44:43 +00:00
prev_times_ = curr_times;
return {usage, tooltip};
}
2021-02-02 22:33:33 +00:00
std::tuple<float, float, float> waybar::modules::Cpu::getCpuFrequency() {
std::vector<float> frequencies = parseCpuFrequencies();
auto [min, max] = std::minmax_element(std::begin(frequencies), std::end(frequencies));
float avg_frequency = std::accumulate(std::begin(frequencies), std::end(frequencies), 0.0) / frequencies.size();
// Round frequencies with double decimal precision to get GHz
float max_frequency = std::ceil(*max / 10.0) / 100.0;
float min_frequency = std::ceil(*min / 10.0) / 100.0;
avg_frequency = std::ceil(avg_frequency / 10.0) / 100.0;
return { max_frequency, min_frequency, avg_frequency };
}