1 #include "modules/memory.hpp"
2
Memory(const std::string & id,const Json::Value & config)3 waybar::modules::Memory::Memory(const std::string& id, const Json::Value& config)
4 : ALabel(config, "memory", id, "{}%", 30) {
5 thread_ = [this] {
6 dp.emit();
7 thread_.sleep_for(interval_);
8 };
9 }
10
update()11 auto waybar::modules::Memory::update() -> void {
12 parseMeminfo();
13
14 unsigned long memtotal = meminfo_["MemTotal"];
15 unsigned long swaptotal = 0;
16 if (meminfo_.count("SwapTotal")) {
17 swaptotal = meminfo_["SwapTotal"];
18 }
19 unsigned long memfree;
20 unsigned long swapfree = 0;
21 if (meminfo_.count("SwapFree")) {
22 swapfree = meminfo_["SwapFree"];
23 }
24 if (meminfo_.count("MemAvailable")) {
25 // New kernels (3.4+) have an accurate available memory field.
26 memfree = meminfo_["MemAvailable"] + meminfo_["zfs_size"];
27 } else {
28 // Old kernel; give a best-effort approximation of available memory.
29 memfree = meminfo_["MemFree"] + meminfo_["Buffers"] + meminfo_["Cached"] +
30 meminfo_["SReclaimable"] - meminfo_["Shmem"] + meminfo_["zfs_size"];
31 }
32
33 if (memtotal > 0 && memfree >= 0) {
34 auto total_ram_gigabytes = memtotal / std::pow(1024, 2);
35 auto total_swap_gigabytes = swaptotal / std::pow(1024, 2);
36 int used_ram_percentage = 100 * (memtotal - memfree) / memtotal;
37 int used_swap_percentage = 0;
38 if (swaptotal && swapfree) {
39 used_swap_percentage = 100 * (swaptotal - swapfree) / swaptotal;
40 }
41 auto used_ram_gigabytes = (memtotal - memfree) / std::pow(1024, 2);
42 auto used_swap_gigabytes = (swaptotal - swapfree) / std::pow(1024, 2);
43 auto available_ram_gigabytes = memfree / std::pow(1024, 2);
44 auto available_swap_gigabytes = swapfree / std::pow(1024, 2);
45
46 auto format = format_;
47 auto state = getState(used_ram_percentage);
48 if (!state.empty() && config_["format-" + state].isString()) {
49 format = config_["format-" + state].asString();
50 }
51
52 if (format.empty()) {
53 event_box_.hide();
54 } else {
55 event_box_.show();
56 auto icons = std::vector<std::string>{state};
57 label_.set_markup(fmt::format(format,
58 used_ram_percentage,
59 fmt::arg("icon", getIcon(used_ram_percentage, icons)),
60 fmt::arg("total", total_ram_gigabytes),
61 fmt::arg("swapTotal", total_swap_gigabytes),
62 fmt::arg("percentage", used_ram_percentage),
63 fmt::arg("swapPercentage", used_swap_percentage),
64 fmt::arg("used", used_ram_gigabytes),
65 fmt::arg("swapUsed", used_swap_gigabytes),
66 fmt::arg("avail", available_ram_gigabytes),
67 fmt::arg("swapAvail", available_swap_gigabytes)));
68 }
69
70 if (tooltipEnabled()) {
71 if (config_["tooltip-format"].isString()) {
72 auto tooltip_format = config_["tooltip-format"].asString();
73 label_.set_tooltip_text(fmt::format(tooltip_format,
74 used_ram_percentage,
75 fmt::arg("total", total_ram_gigabytes),
76 fmt::arg("swapTotal", total_swap_gigabytes),
77 fmt::arg("percentage", used_ram_percentage),
78 fmt::arg("swapPercentage", used_swap_percentage),
79 fmt::arg("used", used_ram_gigabytes),
80 fmt::arg("swapUsed", used_swap_gigabytes),
81 fmt::arg("avail", available_ram_gigabytes),
82 fmt::arg("swapAvail", available_swap_gigabytes)));
83 } else {
84 label_.set_tooltip_text(fmt::format("{:.{}f}GiB used", used_ram_gigabytes, 1));
85 }
86 }
87 } else {
88 event_box_.hide();
89 }
90 // Call parent update
91 ALabel::update();
92 }
93