源码快照 @ 2026-09-02 (source-only, 剔除非源码素材)

apps/server/src/engine-directory-fence.ts

@@ -0,0 +1,44 @@
+import type { ServerConfig, WorkspaceInfo } from "./types.js";
+
+type Queue = Map<string, Promise<void>>;
+
+const queuesByConfig = new WeakMap<ServerConfig, Queue>();
+
+function directoryKey(workspace: WorkspaceInfo): string {
+  const directory = workspace.directory?.trim() || workspace.path.trim();
+  return process.platform === "win32"
+    ? directory.replace(/^\\\\\?\\/, "").replace(/^\/\/\?\//, "").toLowerCase()
+    : directory;
+}
+
+/**
+ * Serialize target-directory instance disposal with prompt admission routed
+ * through OpenWork. Different directories intentionally use different queues.
+ */
+export async function withEngineDirectoryFence<T>(
+  config: ServerConfig,
+  workspace: WorkspaceInfo,
+  operation: () => Promise<T>,
+): Promise<T> {
+  let queue = queuesByConfig.get(config);
+  if (!queue) {
+    queue = new Map();
+    queuesByConfig.set(config, queue);
+  }
+
+  const key = directoryKey(workspace);
+  const previous = queue.get(key) ?? Promise.resolve();
+  let release: () => void = () => {};
+  const current = new Promise<void>((resolve) => {
+    release = resolve;
+  });
+  queue.set(key, current);
+
+  await previous.catch(() => undefined);
+  try {
+    return await operation();
+  } finally {
+    release();
+    if (queue.get(key) === current) queue.delete(key);
+  }
+}