waybar/src/modules/memory.cpp

70 lines
1.9 KiB
C++
Raw Normal View History

2018-08-09 01:42:52 +02:00
#include "modules/memory.hpp"
2018-08-20 14:50:45 +02:00
waybar::modules::Memory::Memory(const Json::Value& config)
2018-08-27 01:36:25 +02:00
: ALabel(config, "{}%")
2018-08-09 01:42:52 +02:00
{
2018-08-16 14:29:41 +02:00
label_.set_name("memory");
2018-10-26 09:27:16 +02:00
uint32_t interval = config_["interval"].isUInt() ? config_["interval"].asUInt() : 30;
2018-08-16 14:29:41 +02:00
thread_ = [this, interval] {
2018-08-20 14:50:45 +02:00
dp.emit();
2018-08-16 14:29:41 +02:00
thread_.sleep_for(chrono::seconds(interval));
2018-08-09 01:42:52 +02:00
};
}
2018-08-09 01:42:52 +02:00
2018-08-09 12:05:48 +02:00
auto waybar::modules::Memory::update() -> void
{
2018-11-08 21:09:56 +01:00
parseMeminfo();
2018-11-09 16:24:13 +01:00
if(memtotal_ > 0 && memfree_ >= 0) {
int used_ram_percentage = 100 * (memtotal_ - memfree_) / memtotal_;
label_.set_text(fmt::format(format_, used_ram_percentage));
auto used_ram_gigabytes = (memtotal_ - memfree_) / std::pow(1024, 2);
label_.set_tooltip_text(fmt::format("{:.{}f}Gb used", used_ram_gigabytes, 1));
label_.show();
} else {
label_.hide();
}
2018-11-08 21:09:56 +01:00
}
void waybar::modules::Memory::parseMeminfo()
{
2018-11-09 16:24:13 +01:00
long memtotal = -1, memfree = -1, membuffer = -1, memcache = -1, memavail = -1;
int count = 0;
std::string line;
std::ifstream info("/proc/meminfo");
if(info.is_open()) {
while(getline(info, line)) {
auto posDelim = line.find(":");
std::string name = line.substr(0, posDelim);
long value = std::stol(line.substr(posDelim + 1));
if(name.compare("MemTotal") == 0) {
memtotal = value;
count++;
} else if(name.compare("MemAvailable") == 0) {
memavail = value;
count++;
} else if(name.compare("MemFree") == 0) {
memfree = value;
count++;
} else if(name.compare("Buffers") == 0) {
membuffer = value;
count++;
} else if(name.compare("Cached") == 0) {
memcache = value;
count++;
}
if (count >= 5 || (count >= 4 && memavail >= -1)) {
info.close();
}
2018-11-08 21:09:56 +01:00
}
} else {
2018-11-09 16:24:13 +01:00
throw std::runtime_error("Can't open /proc/meminfo");
}
memtotal_ = memtotal;
if(memavail >= 0) {
memfree_ = memavail;
} else {
2018-11-08 21:09:56 +01:00
memfree_ = memfree + (membuffer + memcache);
2018-08-09 12:05:48 +02:00
}
}