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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 | /** * 并发控制池 - 限制最大并发数的异步任务调度器 * * 用于内容并行生成:控制同时进行的 LLM 调用数量, * 避免打爆 API 限流同时最大化吞吐量。 */ export class AsyncPool { private concurrency: number; /** * @param concurrency 最大并发数,默认 8 */ constructor(concurrency: number = 8) { this.concurrency = Math.max(1, concurrency); } /** * 并发执行一组任务,结果按原始顺序返回。 * 任意一个任务失败会导致整体 reject。 */ async runAll<T>(tasks: Array<{ fn: () => Promise<T> }>): Promise<T[]> { const results: T[] = new Array(tasks.length); let nextIndex = 0; const worker = async (): Promise<void> => { while (nextIndex < tasks.length) { const idx = nextIndex++; results[idx] = await tasks[idx].fn(); } }; const workers = Array.from({ length: Math.min(this.concurrency, tasks.length) }, () => worker()); await Promise.all(workers); return results; } /** * 顺序执行一组任务(按给定顺序逐个执行,无并发)。 * 适用于需要严格顺序的场景。 */ async runSequential<T>(tasks: Array<{ fn: () => Promise<T> }>): Promise<T[]> { const results: T[] = []; for (const task of tasks) { results.push(await task.fn()); } return results; } } |