Initial commit of eigent-main

package/@stackframe/stack-shared/dist/utils/locks.js

@@ -0,0 +1,82 @@
+"use strict";
+var __defProp = Object.defineProperty;
+var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
+var __getOwnPropNames = Object.getOwnPropertyNames;
+var __hasOwnProp = Object.prototype.hasOwnProperty;
+var __export = (target, all) => {
+  for (var name in all)
+    __defProp(target, name, { get: all[name], enumerable: true });
+};
+var __copyProps = (to, from, except, desc) => {
+  if (from && typeof from === "object" || typeof from === "function") {
+    for (let key of __getOwnPropNames(from))
+      if (!__hasOwnProp.call(to, key) && key !== except)
+        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
+  }
+  return to;
+};
+var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
+
+// src/utils/locks.tsx
+var locks_exports = {};
+__export(locks_exports, {
+  ReadWriteLock: () => ReadWriteLock
+});
+module.exports = __toCommonJS(locks_exports);
+var import_async_mutex = require("async-mutex");
+var ReadWriteLock = class {
+  constructor() {
+    this.semaphore = new import_async_mutex.Semaphore(1);
+    this.readers = 0;
+    this.readersMutex = new import_async_mutex.Semaphore(1);
+  }
+  async withReadLock(callback) {
+    await this._acquireReadLock();
+    try {
+      return await callback();
+    } finally {
+      await this._releaseReadLock();
+    }
+  }
+  async withWriteLock(callback) {
+    await this._acquireWriteLock();
+    try {
+      return await callback();
+    } finally {
+      await this._releaseWriteLock();
+    }
+  }
+  async _acquireReadLock() {
+    await this.readersMutex.acquire();
+    try {
+      this.readers += 1;
+      if (this.readers === 1) {
+        await this.semaphore.acquire();
+      }
+    } finally {
+      this.readersMutex.release();
+    }
+  }
+  async _releaseReadLock() {
+    await this.readersMutex.acquire();
+    try {
+      this.readers -= 1;
+      if (this.readers === 0) {
+        this.semaphore.release();
+      }
+    } finally {
+      this.readersMutex.release();
+    }
+  }
+  async _acquireWriteLock() {
+    await this.semaphore.acquire();
+  }
+  async _releaseWriteLock() {
+    this.semaphore.release();
+  }
+};
+// Annotate the CommonJS export names for ESM import in node:
+0 && (module.exports = {
+  ReadWriteLock
+});
+//# sourceMappingURL=locks.js.map