Sync upstream Gemini-CLI v0.8.2 (#838)

packages/cli/src/ui/hooks/useMemoryMonitor.ts

@@ -0,0 +1,41 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { useEffect } from 'react';
+import process from 'node:process';
+import { type HistoryItemWithoutId, MessageType } from '../types.js';
+
+export const MEMORY_WARNING_THRESHOLD = 7 * 1024 * 1024 * 1024; // 7GB in bytes
+export const MEMORY_CHECK_INTERVAL = 60 * 1000; // one minute
+
+interface MemoryMonitorOptions {
+  addItem: (item: HistoryItemWithoutId, timestamp: number) => void;
+}
+
+export const useMemoryMonitor = ({ addItem }: MemoryMonitorOptions) => {
+  useEffect(() => {
+    const intervalId = setInterval(() => {
+      const usage = process.memoryUsage().rss;
+      if (usage > MEMORY_WARNING_THRESHOLD) {
+        addItem(
+          {
+            type: MessageType.WARNING,
+            text:
+              `High memory usage detected: ${(
+                usage /
+                (1024 * 1024 * 1024)
+              ).toFixed(2)} GB. ` +
+              'If you experience a crash, please file a bug report by running `/bug`',
+          },
+          Date.now(),
+        );
+        clearInterval(intervalId);
+      }
+    }, MEMORY_CHECK_INTERVAL);
+
+    return () => clearInterval(intervalId);
+  }, [addItem]);
+};