完善线程安全设计

api/include/mk_media.h

@@ -15,6 +15,7 @@
 #include "mk_track.h"
 #include "mk_frame.h"
 #include "mk_events_objects.h"
+#include "mk_thread.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -246,7 +247,7 @@ API_EXPORT void API_CALL mk_media_set_on_regist(mk_media ctx, on_mk_media_source
 typedef on_mk_media_source_send_rtp_result on_mk_media_send_rtp_result;
 
 /**
- * 开始发送一路ps-rtp流(通过ssrc区分多路)
+ * 开始发送一路ps-rtp流(通过ssrc区分多路)，此api线程安全
  * @param ctx 对象指针
  * @param dst_url 目标ip或域名
  * @param dst_port 目标端口
@@ -258,12 +259,18 @@ typedef on_mk_media_source_send_rtp_result on_mk_media_send_rtp_result;
 API_EXPORT void API_CALL mk_media_start_send_rtp(mk_media ctx, const char *dst_url, uint16_t dst_port, const char *ssrc, int is_udp, on_mk_media_send_rtp_result cb, void *user_data);
 
 /**
- * 停止某路或全部ps-rtp发送
+ * 停止某路或全部ps-rtp发送，此api线程安全
  * @param ctx 对象指针
  * @param ssrc rtp的ssrc，10进制的字符串打印，如果为null或空字符串，则停止所有rtp推流
- * @return 1成功，0失败
  */
-API_EXPORT int API_CALL mk_media_stop_send_rtp(mk_media ctx, const char *ssrc);
+API_EXPORT void API_CALL mk_media_stop_send_rtp(mk_media ctx, const char *ssrc);
+
+/**
+ * 获取所属线程
+ * @param ctx 对象指针
+ */
+API_EXPORT mk_thread API_CALL mk_media_get_owner_thread(mk_media ctx);
+
 
 #ifdef __cplusplus
 }

api/source/mk_media.cpp

@@ -22,6 +22,7 @@ public:
     template<typename ...ArgsType>
     MediaHelper(ArgsType &&...args){
         _channel = std::make_shared<DevChannel>(std::forward<ArgsType>(args)...);
+        _poller = EventPollerPool::Instance().getPoller();
     }
     ~MediaHelper(){}
 
@@ -58,6 +59,11 @@ public:
         _on_regist_data = user_data;
     }
 
+    // 获取所属线程
+    toolkit::EventPoller::Ptr getOwnerPoller(MediaSource &sender) override {
+        return _poller;
+    }
+
 protected:
     // 通知其停止推流
     bool close(MediaSource &sender,bool force) override{
@@ -111,6 +117,7 @@ protected:
     }
 
 private:
+    EventPoller::Ptr _poller;
     DevChannel::Ptr _channel;
     on_mk_media_close _on_close = nullptr;
     on_mk_media_seek _on_seek = nullptr;
@@ -266,16 +273,28 @@ API_EXPORT void API_CALL mk_media_start_send_rtp(mk_media ctx, const char *dst_u
     args.is_udp = is_udp;
 
     // sender参数无用
-    (*obj)->getChannel()->startSendRtp(MediaSource::NullMediaSource(), args, [cb, user_data](uint16_t local_port, const SockException &ex){
+    auto ref = *obj;
+    (*obj)->getOwnerPoller(MediaSource::NullMediaSource())->async([args, ref, cb, user_data]() {
+        ref->getChannel()->startSendRtp(MediaSource::NullMediaSource(), args, [cb, user_data](uint16_t local_port, const SockException &ex) {
             if (cb) {
                 cb(user_data, local_port, ex.getErrCode(), ex.what());
             }
         });
+    });
 }
 
-API_EXPORT int API_CALL mk_media_stop_send_rtp(mk_media ctx, const char *ssrc){
+API_EXPORT void API_CALL mk_media_stop_send_rtp(mk_media ctx, const char *ssrc){
     assert(ctx);
     MediaHelper::Ptr *obj = (MediaHelper::Ptr *)ctx;
     // sender参数无用
-    return (*obj)->getChannel()->stopSendRtp(MediaSource::NullMediaSource(), ssrc ? ssrc : "");
+    auto ref = *obj;
+    string ssrc_str = ssrc ? ssrc : "";
+    (*obj)->getOwnerPoller(MediaSource::NullMediaSource())->async([ref, ssrc_str]() {
+        ref->getChannel()->stopSendRtp(MediaSource::NullMediaSource(), ssrc_str);
+    });
+}
+
+API_EXPORT mk_thread API_CALL mk_media_get_owner_thread(mk_media ctx) {
+    MediaHelper::Ptr *obj = (MediaHelper::Ptr *)ctx;
+    return (*obj)->getOwnerPoller(MediaSource::NullMediaSource()).get();
 }

src/Common/MediaSource.cpp

@@ -576,8 +576,8 @@ MediaSource::Ptr MediaSource::createFromMP4(const string &schema, const string &
     }
 #ifdef ENABLE_MP4
     try {
-        MP4Reader::Ptr pReader(new MP4Reader(vhost, app, stream, file_path));
-        pReader->startReadMP4();
+        auto reader = std::make_shared<MP4Reader>(vhost, app, stream, file_path);
+        reader->startReadMP4();
         return MediaSource::find(schema, vhost, app, stream);
     } catch (std::exception &ex) {
         WarnL << ex.what();
@@ -733,7 +733,7 @@ toolkit::EventPoller::Ptr MediaSourceEventInterceptor::getOwnerPoller(MediaSourc
     if (listener) {
         return listener->getOwnerPoller(sender);
     }
-    return nullptr;
+    return EventPollerPool::Instance().getPoller();
 }
 
 

src/Common/MediaSource.h

@@ -81,7 +81,7 @@ public:
     // 获取丢包率
     virtual int getLossRate(MediaSource &sender, TrackType type) { return -1; }
     // 获取所在线程
-    virtual toolkit::EventPoller::Ptr getOwnerPoller(MediaSource &sender) { return nullptr; }
+    virtual toolkit::EventPoller::Ptr getOwnerPoller(MediaSource &sender) = 0;
 
     ////////////////////////仅供MultiMediaSourceMuxer对象继承////////////////////////
     // 开启或关闭录制

src/Common/MultiMediaSourceMuxer.cpp

@@ -219,9 +219,9 @@ bool MultiMediaSourceMuxer::isRecording(MediaSource &sender, Recorder::type type
     }
 }
 
-void MultiMediaSourceMuxer::startSendRtp(MediaSource &, const MediaSourceEvent::SendRtpArgs &args, const std::function<void(uint16_t, const toolkit::SockException &)> cb) {
+void MultiMediaSourceMuxer::startSendRtp(MediaSource &sender, const MediaSourceEvent::SendRtpArgs &args, const std::function<void(uint16_t, const toolkit::SockException &)> cb) {
 #if defined(ENABLE_RTPPROXY)
-    auto rtp_sender = std::make_shared<RtpSender>();
+    auto rtp_sender = std::make_shared<RtpSender>(getOwnerPoller(sender));
     weak_ptr<MultiMediaSourceMuxer> weak_self = shared_from_this();
     rtp_sender->startSend(args, [args, weak_self, rtp_sender, cb](uint16_t local_port, const SockException &ex) mutable {
         cb(local_port, ex);

src/Record/MP4Reader.cpp

@@ -20,6 +20,8 @@ using namespace toolkit;
 namespace mediakit {
 
 MP4Reader::MP4Reader(const string &vhost, const string &app, const string &stream_id, const string &file_path) {
+    //读写文件建议放在后台线程
+    _poller = WorkThreadPool::Instance().getPoller();
     _file_path = file_path;
     if (_file_path.empty()) {
         GET_CONFIG(string, recordPath, Record::kFilePath);
@@ -105,7 +107,7 @@ void MP4Reader::stopReadMP4() {
     _timer = nullptr;
 }
 
-void MP4Reader::startReadMP4(const EventPoller::Ptr &poller_in, uint64_t sample_ms, bool ref_self, bool file_repeat) {
+void MP4Reader::startReadMP4(uint64_t sample_ms, bool ref_self, bool file_repeat) {
     GET_CONFIG(uint32_t, sampleMS, Record::kSampleMS);
     auto strong_self = shared_from_this();
     if (_muxer) {
@@ -114,8 +116,6 @@ void MP4Reader::startReadMP4(const EventPoller::Ptr &poller_in, uint64_t sample_
         while (!_muxer->isAllTrackReady() && readNextSample()) {}
     }
 
-    //未指定线程，那么使用后台线程(读写文件采用后台线程)
-    auto poller = poller_in ? poller_in : WorkThreadPool::Instance().getPoller();
     auto timer_sec = (sample_ms ? sample_ms : sampleMS) / 1000.0f;
 
     //启动定时器
@@ -123,7 +123,7 @@ void MP4Reader::startReadMP4(const EventPoller::Ptr &poller_in, uint64_t sample_
         _timer = std::make_shared<Timer>(timer_sec, [strong_self]() {
             lock_guard<recursive_mutex> lck(strong_self->_mtx);
             return strong_self->readSample();
-        }, poller);
+        }, _poller);
     } else {
         weak_ptr<MP4Reader> weak_self = strong_self;
         _timer = std::make_shared<Timer>(timer_sec, [weak_self]() {
@@ -133,7 +133,7 @@ void MP4Reader::startReadMP4(const EventPoller::Ptr &poller_in, uint64_t sample_
             }
             lock_guard<recursive_mutex> lck(strong_self->_mtx);
             return strong_self->readSample();
-        }, poller);
+        }, _poller);
     }
 
     _file_repeat = file_repeat;
@@ -251,5 +251,9 @@ string MP4Reader::getOriginUrl(MediaSource &sender) const {
     return _file_path;
 }
 
+toolkit::EventPoller::Ptr MP4Reader::getOwnerPoller(MediaSource &sender) {
+    return _poller;
+}
+
 } /* namespace mediakit */
 #endif //ENABLE_MP4

src/Record/MP4Reader.h

@@ -33,12 +33,11 @@ public:
 
     /**
      * 开始解复用MP4文件
-     * @param poller 解复用mp4定时器所绑定线程，置空则随机采用一条后台线程
      * @param sample_ms 每次读取文件数据量，单位毫秒，置0时采用配置文件配置
      * @param ref_self 是否让定时器引用此对象本身，如果无其他对象引用本身，在不循环读文件时，读取文件结束后本对象将自动销毁
      * @param file_repeat 是否循环读取文件，如果配置文件设置为循环读文件，此参数无效
      */
-    void startReadMP4(const toolkit::EventPoller::Ptr &poller = nullptr, uint64_t sample_ms = 0, bool ref_self = true,  bool file_repeat = false);
+    void startReadMP4(uint64_t sample_ms = 0, bool ref_self = true,  bool file_repeat = false);
 
     /**
      * 停止解复用MP4定时器
@@ -60,6 +59,7 @@ private:
     int totalReaderCount(MediaSource &sender) override;
     MediaOriginType getOriginType(MediaSource &sender) const override;
     std::string getOriginUrl(MediaSource &sender) const override;
+    toolkit::EventPoller::Ptr getOwnerPoller(MediaSource &sender) override;
 
     bool readSample();
     bool readNextSample();
@@ -80,6 +80,7 @@ private:
     toolkit::Timer::Ptr _timer;
     MP4Demuxer::Ptr _demuxer;
     MultiMediaSourceMuxer::Ptr _muxer;
+    toolkit::EventPoller::Ptr _poller;
 };
 
 } /* namespace mediakit */

src/Rtp/RtpProcess.cpp

@@ -285,7 +285,7 @@ std::shared_ptr<SockInfo> RtpProcess::getOriginSock(MediaSource &sender) const {
 }
 
 toolkit::EventPoller::Ptr RtpProcess::getOwnerPoller(MediaSource &sender) {
-    return _sock ? _sock->getPoller() : nullptr;
+    return _sock ? _sock->getPoller() : EventPollerPool::Instance().getPoller();
 }
 
 void RtpProcess::setHelper(std::weak_ptr<RtcpContext> help) {

src/Rtp/RtpSelector.cpp

@@ -120,12 +120,6 @@ void RtpSelector::onManager() {
     });
 }
 
-RtpSelector::RtpSelector() {
-}
-
-RtpSelector::~RtpSelector() {
-}
-
 RtpProcessHelper::RtpProcessHelper(const string &stream_id, const weak_ptr<RtpSelector> &parent) {
     _stream_id = stream_id;
     _parent = parent;
@@ -136,6 +130,7 @@ RtpProcessHelper::~RtpProcessHelper() {
 }
 
 void RtpProcessHelper::attachEvent() {
+    //主要目的是close回调触发时能把对象从RtpSelector中删除
     _process->setListener(shared_from_this());
 }
 
@@ -157,6 +152,10 @@ int RtpProcessHelper::totalReaderCount(MediaSource &sender) {
     return _process ? _process->getTotalReaderCount() : sender.totalReaderCount();
 }
 
+toolkit::EventPoller::Ptr RtpProcessHelper::getOwnerPoller(MediaSource &sender) {
+    return toolkit::EventPollerPool::Instance().getPoller();
+}
+
 RtpProcess::Ptr &RtpProcessHelper::getProcess() {
     return _process;
 }

src/Rtp/RtpSelector.h

@@ -34,6 +34,8 @@ protected:
     bool close(MediaSource &sender,bool force) override;
     // 观看总人数
     int totalReaderCount(MediaSource &sender) override;
+    // 获取所属线程
+    toolkit::EventPoller::Ptr getOwnerPoller(MediaSource &sender) override;
 
 private:
     std::weak_ptr<RtpSelector > _parent;
@@ -43,8 +45,8 @@ private:
 
 class RtpSelector : public std::enable_shared_from_this<RtpSelector>{
 public:
-    RtpSelector();
-    ~RtpSelector();
+    RtpSelector() = default;
+    ~RtpSelector() = default;
 
     static bool getSSRC(const char *data,size_t data_len, uint32_t &ssrc);
     static RtpSelector &Instance();

src/Rtp/RtpSender.cpp

@@ -20,8 +20,8 @@ using namespace toolkit;
 
 namespace mediakit{
 
-RtpSender::RtpSender() {
-    _poller = EventPollerPool::Instance().getPoller();
+RtpSender::RtpSender(EventPoller::Ptr poller) {
+    _poller = poller ? std::move(poller) : EventPollerPool::Instance().getPoller();
     _socket_rtp = Socket::createSocket(_poller, false);
 }
 
@@ -253,9 +253,8 @@ void RtpSender::onSendRtpUdp(const toolkit::Buffer::Ptr &buf, bool check) {
 }
 
 void RtpSender::onClose() {
-    auto cb = _on_close;
-    if (cb) {
-        _poller->async([cb]() { cb(); }, false);
+    if (_on_close) {
+        _on_close();
     }
 }
 
@@ -266,25 +265,18 @@ void RtpSender::onFlushRtpList(shared_ptr<List<Buffer::Ptr> > rtp_list) {
         return;
     }
 
-    weak_ptr<RtpSender> weak_self = shared_from_this();
-    _poller->async([rtp_list, weak_self]() {
-        auto strong_self = weak_self.lock();
-        if (!strong_self) {
-            return;
-        }
     size_t i = 0;
     auto size = rtp_list->size();
     rtp_list->for_each([&](Buffer::Ptr &packet) {
-            if (strong_self->_args.is_udp) {
-                strong_self->onSendRtpUdp(packet, i == 0);
+        if (_args.is_udp) {
+            onSendRtpUdp(packet, i == 0);
             // udp模式，rtp over tcp前4个字节可以忽略
-                strong_self->_socket_rtp->send(std::make_shared<BufferRtp>(std::move(packet),  RtpPacket::kRtpTcpHeaderSize), nullptr, 0, ++i == size);
+            _socket_rtp->send(std::make_shared<BufferRtp>(std::move(packet), RtpPacket::kRtpTcpHeaderSize), nullptr, 0, ++i == size);
         } else {
             // tcp模式, rtp over tcp前2个字节可以忽略,只保留后续rtp长度的2个字节
-                strong_self->_socket_rtp->send(std::make_shared<BufferRtp>(std::move(packet), 2), nullptr, 0, ++i == size);
+            _socket_rtp->send(std::make_shared<BufferRtp>(std::move(packet), 2), nullptr, 0, ++i == size);
         }
     });
-    });
 }
 
 void RtpSender::onErr(const SockException &ex, bool is_connect) {

src/Rtp/RtpSender.h

@@ -22,7 +22,7 @@ class RtpSender : public MediaSinkInterface, public std::enable_shared_from_this
 public:
     typedef std::shared_ptr<RtpSender> Ptr;
 
-    RtpSender();
+    RtpSender(toolkit::EventPoller::Ptr poller = nullptr);
     ~RtpSender() override = default;
 
     /**

src/Rtp/RtpSession.cpp

@@ -139,6 +139,10 @@ int RtpSession::totalReaderCount(MediaSource &sender) {
     return _process ? _process->getTotalReaderCount() : sender.totalReaderCount();
 }
 
+toolkit::EventPoller::Ptr RtpSession::getOwnerPoller(MediaSource &sender) {
+    return getPoller();
+}
+
 static const char *findSSRC(const char *data, ssize_t len, uint32_t ssrc) {
     //rtp前面必须预留两个字节的长度字段
     for (ssize_t i = 2; i <= len - 4; ++i) {

src/Rtp/RtpSession.h

@@ -38,6 +38,8 @@ protected:
     bool close(MediaSource &sender,bool force) override;
     // 观看总人数
     int totalReaderCount(MediaSource &sender) override;
+    // 获取所属线程
+    toolkit::EventPoller::Ptr getOwnerPoller(MediaSource &sender) override;
     // 收到rtp回调
     void onRtpPacket(const char *data, size_t len) override;
 

srt/SrtTransportImp.cpp

@@ -151,7 +151,7 @@ std::shared_ptr<SockInfo> SrtTransportImp::getOriginSock(mediakit::MediaSource &
 
 toolkit::EventPoller::Ptr SrtTransportImp::getOwnerPoller(MediaSource &sender){
     auto session = getSession();
-    return session  ? session->getPoller() : nullptr;
+    return session  ? session->getPoller() : EventPollerPool::Instance().getPoller();
 }
 
 void SrtTransportImp::emitOnPublish() {