Add basic CPU count selection functionality

This commit is contained in:
NGnius 2022-04-21 14:01:49 -04:00
parent de7e356ea4
commit c93f2a8569
3 changed files with 118 additions and 14 deletions

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@ -1,12 +1,58 @@
class Plugin:
# A normal method. It can be called from JavaScript using call_plugin_function("method_1", argument1, argument2)
async def method_1(self, *args):
import time
# A normal method. It can be called from JavaScript using call_plugin_function("method_2", argument1, argument2)
async def method_2(self, *args):
class Plugin:
# call from main_view.html with setCPUs(onclick_event) or call_plugin_method("set_cpus", count)
async def set_cpus(self, count) -> int:
print("Setting CPUs")
with open("/home/deck/PowerTools.log", "a") as f:
f.write(f"Setting {count} CPUs to active\n")
count = min(int(count), self.CPU_COUNT)
# never touch cpu0, since it's special
for cpu in range(1, count):
f.write(f"Setting CPU {cpu} to online\n")
for cpu in range(count, self.CPU_COUNT):
f.write(f"Setting CPU {cpu} to offline\n")
return self.CPU_COUNT
async def get_cpus(self) -> int:
online_count = 1 # cpu0 is always online
for cpu in range(1, self.CPU_COUNT):
online_count += int(status_cpu(cpu))
return online_count
# Asyncio-compatible long-running code, executed in a task when the plugin is loaded
async def _main(self):
with open("/home/deck/PowerTools.log", "w") as f:
f.write(f"Main loop\n")
# these are stateless (well, the state is not saved internally) functions, so there's no need for these to be called like a class method
def cpu_online_path(cpu_number: int) -> str:
return f"/sys/devices/system/cpu/cpu{cpu_number}/online"
def write_to_sys(path, value: int):
with open(path, mode="w") as f:
def read_from_sys(path):
with open(path, mode="r") as f:
def enable_cpu(cpu_number: int):
filepath = cpu_online_path(cpu_number)
write_to_sys(filepath, 1)
def disable_cpu(cpu_number: int):
filepath = cpu_online_path(cpu_number)
write_to_sys(filepath, 0)
def status_cpu(cpu_number: int) -> bool:
filepath = cpu_online_path(cpu_number)
return read_from_sys(filepath) == "1"

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@ -4,8 +4,66 @@
<link rel="stylesheet" href="/steam_resource/css/39.css">
<link rel="stylesheet" href="/steam_resource/css/library.css">
<script src="/static/library.js"></script>
// Python functions
function setCPUs(value) {
return call_plugin_method("set_cpus", {"count":value});
function getCPUs() {
return call_plugin_method("get_cpus", {});
// other logic
async function onSetCPUs() {
let target = document.getElementById("cpu_threads");
let ok = await setCPUs(target.value);
target.value = await getCPUs();
async function onReady() {
document.getElementById("cpu_threads").value = await getCPUs();
async function decrementCPUs() {
let target = document.getElementById("cpu_threads");
if (target.value >= 2) {
target.value -= 1;
await onSetCPUs();
async function incrementCPUs() {
let target = document.getElementById("cpu_threads");
if (target.value <= 7) {
target.value += 1;
await onSetCPUs();
async function resetCPUs() {
let target = document.getElementById("cpu_threads");
target.value = 8;
await onSetCPUs();
<style type="text/css" media="screen">
input::-webkit-inner-spin-button {
-webkit-appearance: none;
margin: 0;
<h2>Hello World</h2>
<body onload="onReady()">
<label for="cpu_threads">Online CPUs</label>
<input type="number" id="cpu_threads" name="cpu_threads" min="1" max="8">
<button type="button" onclick="incrementCPUs()">/\</button>
<button type="button" onclick="decrementCPUs()">\/</button>
<button type="button" onclick="resetCPUs()">Reset</button>

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@ -1,7 +1,7 @@
"name": "Plugin name",
"author": "Plugin author",
"name": "Power Tools",
"author": "NGnius",
"main_view_html": "main_view.html",
"tile_view_html": "",
"flags": ["hot_reload", "root"]
"flags": ["root", "_debug"]