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hosts/totsugeki/home-manager/desktop/ags/config/services/cpu.js

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+class CPUService extends Service {
+  static {
+    Service.register(this, {}, { "current-usage": ["float", "r"] });
+  }
+
+  #previousIdle = 0.0;
+  #previousTotal = 0.0;
+  #currentUsage = 0.0;
+
+  get current_usage() {
+    return this.#currentUsage;
+  }
+
+  constructor() {
+    super();
+    this.#update();
+    const interval = setInterval(() => {
+      this.#update();
+    }, 2000);
+  }
+
+  #update() {
+    const currentValues = Utils.exec(
+      "sh -c 'cat /proc/stat | grep cpu | head -n 1 | tr -s \" \"'",
+    )
+      .split(" ")
+      .slice(1, 10)
+      .map(Number);
+    let idle = currentValues[3];
+    let total = currentValues.reduce((a, b) => a + b, 0);
+    this.#currentUsage =
+      1.0 - (idle - this.#previousIdle) / (total - this.#previousTotal);
+    this.#previousIdle = idle;
+    this.#previousTotal = total;
+    this.changed("current-usage");
+  }
+}
+
+const cpu = new CPUService();
+export default cpu;