88 lines
3.5 KiB
C++
88 lines
3.5 KiB
C++
#include "modules/memory.hpp"
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waybar::modules::Memory::Memory(const std::string& id, const Json::Value& config)
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: ALabel(config, "memory", id, "{}%", 30) {
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thread_ = [this] {
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dp.emit();
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thread_.sleep_for(interval_);
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};
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}
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auto waybar::modules::Memory::update() -> void {
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parseMeminfo();
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unsigned long memtotal = meminfo_["MemTotal"];
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unsigned long swaptotal = 0;
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if (meminfo_.count("SwapTotal")) {
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swaptotal = meminfo_["SwapTotal"];
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}
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unsigned long memfree;
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unsigned long swapfree = 0;
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if (meminfo_.count("SwapFree")) {
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swapfree = meminfo_["SwapFree"];
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}
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if (meminfo_.count("MemAvailable")) {
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// New kernels (3.4+) have an accurate available memory field.
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memfree = meminfo_["MemAvailable"] + meminfo_["zfs_size"];
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} else {
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// Old kernel; give a best-effort approximation of available memory.
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memfree = meminfo_["MemFree"] + meminfo_["Buffers"] + meminfo_["Cached"] +
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meminfo_["SReclaimable"] - meminfo_["Shmem"] + meminfo_["zfs_size"];
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}
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if (memtotal > 0 && memfree >= 0) {
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float total_ram_gigabytes =
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0.01 * round(memtotal / 10485.76); // 100*10485.76 = 2^20 = 1024^2 = GiB/KiB
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float total_swap_gigabytes = 0.01 * round(swaptotal / 10485.76);
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int used_ram_percentage = 100 * (memtotal - memfree) / memtotal;
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int used_swap_percentage = 0;
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if (swaptotal && swapfree) {
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used_swap_percentage = 100 * (swaptotal - swapfree) / swaptotal;
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}
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float used_ram_gigabytes = 0.01 * round((memtotal - memfree) / 10485.76);
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float used_swap_gigabytes = 0.01 * round((swaptotal - swapfree) / 10485.76);
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float available_ram_gigabytes = 0.01 * round(memfree / 10485.76);
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float available_swap_gigabytes = 0.01 * round(swapfree / 10485.76);
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auto format = format_;
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auto state = getState(used_ram_percentage);
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if (!state.empty() && config_["format-" + state].isString()) {
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format = config_["format-" + state].asString();
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}
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if (format.empty()) {
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event_box_.hide();
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} else {
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event_box_.show();
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auto icons = std::vector<std::string>{state};
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label_.set_markup(fmt::format(
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fmt::runtime(format), used_ram_percentage,
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fmt::arg("icon", getIcon(used_ram_percentage, icons)),
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fmt::arg("total", total_ram_gigabytes), fmt::arg("swapTotal", total_swap_gigabytes),
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fmt::arg("percentage", used_ram_percentage),
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fmt::arg("swapPercentage", used_swap_percentage), fmt::arg("used", used_ram_gigabytes),
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fmt::arg("swapUsed", used_swap_gigabytes), fmt::arg("avail", available_ram_gigabytes),
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fmt::arg("swapAvail", available_swap_gigabytes)));
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}
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if (tooltipEnabled()) {
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if (config_["tooltip-format"].isString()) {
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auto tooltip_format = config_["tooltip-format"].asString();
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label_.set_tooltip_text(fmt::format(
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fmt::runtime(tooltip_format), used_ram_percentage,
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fmt::arg("total", total_ram_gigabytes), fmt::arg("swapTotal", total_swap_gigabytes),
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fmt::arg("percentage", used_ram_percentage),
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fmt::arg("swapPercentage", used_swap_percentage), fmt::arg("used", used_ram_gigabytes),
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fmt::arg("swapUsed", used_swap_gigabytes), fmt::arg("avail", available_ram_gigabytes),
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fmt::arg("swapAvail", available_swap_gigabytes)));
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} else {
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label_.set_tooltip_text(fmt::format("{:.{}f}GiB used", used_ram_gigabytes, 1));
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}
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}
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} else {
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event_box_.hide();
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}
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// Call parent update
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ALabel::update();
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}
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