/**
 * Concurrency Manager / 并发管理器
 * Manages concurrent execution limits for background tasks by model/provider
 * 按模型/提供者管理后台任务的并发执行限制
 */
import type { BackgroundTaskConfig } from "./types";
export declare class ConcurrencyManager {
    private counts;
    private queues;
    private readonly defaultConcurrency;
    private readonly providerConcurrency;
    private readonly modelConcurrency;
    /**
     * Initialize concurrency manager with configuration
     * 使用配置初始化并发管理器
     */
    constructor(config?: BackgroundTaskConfig);
    /**
     * Get concurrency limit for a specific model
     * 获取特定模型的并发限制
     */
    getConcurrencyLimit(model: string): number;
    /**
     * Acquire a concurrency slot for the given model
     * 为给定模型获取一个并发槽位
     */
    acquire(model: string): Promise<void>;
    /**
     * Release a concurrency slot for the given model
     * 释放给定模型的并发槽位
     */
    release(model: string): void;
    /**
     * Cancel all waiting tasks for the given model
     * 取消给定模型的所有等待任务
     */
    cancelWaiters(model: string): void;
}