70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
#include "modules/memory.hpp"
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waybar::modules::Memory::Memory(const Json::Value& config)
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: ALabel(config, "{}%")
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{
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label_.set_name("memory");
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uint32_t interval = config_["interval"].isUInt() ? config_["interval"].asUInt() : 30;
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thread_ = [this, interval] {
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dp.emit();
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thread_.sleep_for(chrono::seconds(interval));
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};
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}
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auto waybar::modules::Memory::update() -> void
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{
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parseMeminfo();
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if(memtotal_ > 0 && memfree_ >= 0) {
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int used_ram_percentage = 100 * (memtotal_ - memfree_) / memtotal_;
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label_.set_text(fmt::format(format_, used_ram_percentage));
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auto used_ram_gigabytes = (memtotal_ - memfree_) / std::pow(1024, 2);
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label_.set_tooltip_text(fmt::format("{:.{}f}Gb used", used_ram_gigabytes, 1));
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label_.show();
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} else {
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label_.hide();
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}
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}
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void waybar::modules::Memory::parseMeminfo()
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{
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long memtotal = -1, memfree = -1, membuffer = -1, memcache = -1, memavail = -1;
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int count = 0;
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std::string line;
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std::ifstream info("/proc/meminfo");
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if(info.is_open()) {
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while(getline(info, line)) {
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auto posDelim = line.find(":");
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std::string name = line.substr(0, posDelim);
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long value = std::stol(line.substr(posDelim + 1));
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if(name.compare("MemTotal") == 0) {
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memtotal = value;
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count++;
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} else if(name.compare("MemAvailable") == 0) {
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memavail = value;
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count++;
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} else if(name.compare("MemFree") == 0) {
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memfree = value;
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count++;
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} else if(name.compare("Buffers") == 0) {
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membuffer = value;
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count++;
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} else if(name.compare("Cached") == 0) {
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memcache = value;
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count++;
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}
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if (count >= 5 || (count >= 4 && memavail >= -1)) {
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info.close();
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}
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}
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} else {
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throw std::runtime_error("Can't open /proc/meminfo");
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}
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memtotal_ = memtotal;
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if(memavail >= 0) {
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memfree_ = memavail;
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} else {
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memfree_ = memfree + (membuffer + memcache);
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}
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}
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