XiuChengWu
ba7382db2a
- Implemented the OpenAI-compatible AI provider plugin, including configuration, chat, and chat_stream functionalities. - Added support for SSE streaming and tool calls. - Integrated Boost.JSON for JSON handling. - Created CMake configuration for the plugin. - Added error handling and logging throughout the plugin.
51 lines
1.8 KiB
C++
51 lines
1.8 KiB
C++
/* @file event_bus.hpp
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* @brief Publish-subscribe event bus with shared_mutex for concurrent read access.
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* 发布-订阅事件总线，使用 shared_mutex 支持并发读访问。
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* Copyright (c) 2026 dstalk contributors. GPLv3.
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*/
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#pragma once
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#include <functional>
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#include <mutex>
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#include <shared_mutex>
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#include <unordered_map>
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#include <vector>
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namespace dstalk {
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using EventHandler = std::function<void(int event_type, const void* data)>;
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// 轻量级发布-订阅事件总线 / Lightweight pub-sub event bus.
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// 读取者使用 shared_lock（emit），因此多个处理器可以并发分发；
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// 写入者使用 unique_lock（subscribe / unsubscribe）。
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// Readers use shared_lock (emit) so multiple handlers can be dispatched
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// concurrently; writers use unique_lock (subscribe / unsubscribe).
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class EventBus {
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public:
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EventBus() = default;
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~EventBus() = default;
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// 订阅事件，返回订阅ID / Subscribe to an event, returning a subscription id
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int subscribe(int event_type, EventHandler handler);
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// 取消订阅 / Unsubscribe by subscription id
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void unsubscribe(int subscription_id);
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// 发布事件 / Emit an event to all matching subscribers
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int emit(int event_type, const void* data);
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private:
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struct Subscription {
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int id;
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int event_type;
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EventHandler handler;
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};
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mutable std::shared_mutex mutex_; // 读写锁：emit 用 shared，subscribe/unsubscribe 用 unique / RW lock: shared for emit, unique for subscribe/unsubscribe
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std::vector<Subscription> subscriptions_; // emit 时线性扫描；对少量订阅者足够 / Linear scan on emit; ok for small subscriber counts
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int next_id_ = 1; // 单调递增订阅 ID 计数器 / Monotonic subscription id counter
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};
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} // namespace dstalk
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