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refactor: simpler memory code

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This commit is contained in:
Alexis 2018-11-09 22:55:25 +01:00
parent a5bca24f9b
commit 45bb8b1a1f
2 changed files with 32 additions and 38 deletions
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1
include/modules/memory.hpp
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@ -12,6 +12,7 @@ class Memory : public ALabel {
Memory(const Json::Value&);
auto update() -> void;
private:
static inline const std::string data_dir_ = "/proc/meminfo";
unsigned long memtotal_;
unsigned long memfree_;
void parseMeminfo();

69
src/modules/memory.cpp
View File

@ -3,7 +3,6 @@
waybar::modules::Memory::Memory(const Json::Value& config)
: ALabel(config, "{}%")
{
label_.set_name("memory");
uint32_t interval = config_["interval"].isUInt() ? config_["interval"].asUInt() : 30;
thread_ = [this, interval] {
dp.emit();
@ -14,56 +13,50 @@ waybar::modules::Memory::Memory(const Json::Value& config)
auto waybar::modules::Memory::update() -> void
{
parseMeminfo();
if(memtotal_ > 0 && memfree_ >= 0) {
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_.set_name("memory");
label_.show();
} else {
label_.set_name("");
label_.hide();
}
}
void waybar::modules::Memory::parseMeminfo()
{
long memtotal = -1, memfree = -1, membuffer = -1, memcache = -1, memavail = -1;
int count = 0;
long memfree = -1, membuffer = -1, memcache = -1, memavail = -1;
std::ifstream info(data_dir_);
if (!info.is_open()) {
throw std::runtime_error("Can't open " + data_dir_);
}
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();
}
while (getline(info, line)) {
auto posDelim = line.find(":");
if (posDelim == std::string::npos) {
continue;
}
std::string name = line.substr(0, posDelim);
long value = std::stol(line.substr(posDelim + 1));
if (name.compare("MemTotal") == 0) {
memtotal_ = value;
} else if (name.compare("MemAvailable") == 0) {
memavail = value;
} else if (name.compare("MemFree") == 0) {
memfree = value;
} else if (name.compare("Buffers") == 0) {
membuffer = value;
} else if (name.compare("Cached") == 0) {
memcache = value;
}
if (memtotal_ > 0 &&
(memavail >= 0 || (memfree > -1 && membuffer > -1 && memcache > -1))) {
break;
}
} else {
throw std::runtime_error("Can't open /proc/meminfo");
}
memtotal_ = memtotal;
if(memavail >= 0) {
memfree_ = memavail;
} else {
memfree_ = memfree + (membuffer + memcache);
}
memfree_ = memavail >= 0 ? memavail : memfree + membuffer + memcache;
}