for bug #241, support merged read. 2.0.48

@@ -26,6 +26,14 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <srs_protocol_rtmp.hpp>
 #include <srs_protocol_stack.hpp>
 #include <srs_app_rtmp_conn.hpp>
+#include <srs_protocol_buffer.hpp>
+
+// when we read from socket less than this value,
+// sleep a while to merge read.
+// @see https://github.com/winlinvip/simple-rtmp-server/issues/241
+#define SRS_MERGED_READ_SIZE (SOCKET_READ_SIZE / 10)
+// the time to sleep to merge read, to read more bytes.
+#define SRS_MERGED_READ_US (300 * 1000)
 
 ISrsMessageHandler::ISrsMessageHandler()
 {
@@ -271,6 +279,30 @@ void SrsPublishRecvThread::stop()
     trd.stop();
 }
 
+void SrsPublishRecvThread::on_thread_start()
+{
+    // we donot set the auto response to false,
+    // for the main thread never send message.
+
+    // enable the merge read
+    // @see https://github.com/winlinvip/simple-rtmp-server/issues/241
+    rtmp->set_merge_read(true, this);
+}
+
+void SrsPublishRecvThread::on_thread_stop()
+{
+    // we donot set the auto response to true,
+    // for we donot set to false yet.
+    
+    // when thread stop, signal the conn thread which wait.
+    // @see https://github.com/winlinvip/simple-rtmp-server/issues/244
+    st_cond_signal(error);
+
+    // disable the merge read
+    // @see https://github.com/winlinvip/simple-rtmp-server/issues/241
+    rtmp->set_merge_read(false, NULL);
+}
+
 bool SrsPublishRecvThread::can_handle()
 {
     // publish thread always can handle message.
@@ -302,18 +334,19 @@ void SrsPublishRecvThread::on_recv_error(int ret)
     st_cond_signal(error);
 }
 
-void SrsPublishRecvThread::on_thread_start()
-{
-    // we donot set the auto response to false,
-    // for the main thread never send message.
-}
-
-void SrsPublishRecvThread::on_thread_stop()
+void SrsPublishRecvThread::on_read(ssize_t nread)
 {
-    // we donot set the auto response to true,
-    // for we donot set to false yet.
+    if (nread < 0) {
+        return;
+    }
     
-    // when thread stop, signal the conn thread which wait.
-    // @see https://github.com/winlinvip/simple-rtmp-server/issues/244
-    st_cond_signal(error);
+    /**
+    * to improve read performance, merge some packets then read,
+    * when it on and read small bytes, we sleep to wait more data.,
+    * that is, we merge some data to read together.
+    * @see https://github.com/winlinvip/simple-rtmp-server/issues/241
+    */
+    if (nread < SRS_MERGED_READ_SIZE) {
+        st_usleep(SRS_MERGED_READ_US);
+    }
 }

@@ -33,6 +33,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <vector>
 
 #include <srs_app_thread.hpp>
+#include <srs_protocol_buffer.hpp>
 
 class SrsRtmpServer;
 class SrsMessage;
@@ -132,7 +133,7 @@ public:
 * the publish recv thread got message and callback the source method to process message.
 * @see: https://github.com/winlinvip/simple-rtmp-server/issues/237
 */
-class SrsPublishRecvThread : public ISrsMessageHandler
+class SrsPublishRecvThread : virtual public ISrsMessageHandler, virtual public IMergeReadHandler
 {
 private:
     SrsRecvThread trd;
@@ -163,13 +164,16 @@ public:
 public:
     virtual int start();
     virtual void stop();
+    virtual void on_thread_start();
+    virtual void on_thread_stop();
+// interface ISrsMessageHandler    
 public:
     virtual bool can_handle();
     virtual int handle(SrsMessage* msg);
     virtual void on_recv_error(int ret);
+// interface IMergeReadHandler
 public:
-    virtual void on_thread_start();
-    virtual void on_thread_stop();
+    virtual void on_read(ssize_t nread);
 };
 
 #endif

@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR       2
 #define VERSION_MINOR       0
-#define VERSION_REVISION    47
+#define VERSION_REVISION    48
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"
 #define RTMP_SIG_SRS_ROLE "origin/edge server"

@@ -26,16 +26,19 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <srs_kernel_error.hpp>
 #include <srs_kernel_log.hpp>
 
-// 4KB=4096
-// 8KB=8192
-// 16KB=16384
-// 32KB=32768
-// 64KB=65536
-// @see https://github.com/winlinvip/simple-rtmp-server/issues/241
-#define SOCKET_READ_SIZE 4096
+IMergeReadHandler::IMergeReadHandler()
+{
+}
+
+IMergeReadHandler::~IMergeReadHandler()
+{
+}
 
 SrsBuffer::SrsBuffer()
 {
+    merged_read = false;
+    _handler = NULL;
+    
     buffer = new char[SOCKET_READ_SIZE];
 }
 
@@ -93,6 +96,16 @@ int SrsBuffer::grow(ISrsBufferReader* reader, int required_size)
             return ret;
         }
         
+        /**
+        * to improve read performance, merge some packets then read,
+        * when it on and read small bytes, we sleep to wait more data.,
+        * that is, we merge some data to read together.
+        * @see https://github.com/winlinvip/simple-rtmp-server/issues/241
+        */
+        if (merged_read && _handler) {
+            _handler->on_read(nread);
+        }
+        
         srs_assert((int)nread > 0);
         append(buffer, (int)nread);
     }
@@ -100,4 +113,10 @@ int SrsBuffer::grow(ISrsBufferReader* reader, int required_size)
     return ret;
 }
 
+void SrsBuffer::set_merge_read(bool v, IMergeReadHandler* handler)
+{
+    merged_read = v;
+    _handler = handler;
+}
+
 

@@ -34,6 +34,34 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include <srs_protocol_io.hpp>
 
+// 4KB=4096
+// 8KB=8192
+// 16KB=16384
+// 32KB=32768
+// 64KB=65536
+// @see https://github.com/winlinvip/simple-rtmp-server/issues/241
+#define SOCKET_READ_SIZE 4096
+
+/**
+* to improve read performance, merge some packets then read,
+* when it on and read small bytes, we sleep to wait more data.,
+* that is, we merge some data to read together.
+* @see https://github.com/winlinvip/simple-rtmp-server/issues/241
+*/
+class IMergeReadHandler
+{
+public:
+    IMergeReadHandler();
+    virtual ~IMergeReadHandler();
+public:
+    /**
+    * when read from channel, notice the merge handler to sleep for
+    * some small bytes.
+    * @remark, it only for server-side, client srs-librtmp just ignore.
+    */
+    virtual void on_read(ssize_t nread) = 0;
+};
+
 /**
 * the buffer provices bytes cache for protocol. generally, 
 * protocol recv data from socket, put into buffer, decode to RTMP message.
@@ -41,6 +69,10 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 class SrsBuffer
 {
 private:
+    // the merged handler
+    bool merged_read;
+    IMergeReadHandler* _handler;
+    // data and socket buffer
     std::vector<char> data;
     char* buffer;
 public:
@@ -79,6 +111,16 @@ public:
     * @remark, we actually maybe read more than required_size, maybe 4k for example.
     */
     virtual int grow(ISrsBufferReader* reader, int required_size);
+public:
+    /**
+    * to improve read performance, merge some packets then read,
+    * when it on and read small bytes, we sleep to wait more data.,
+    * that is, we merge some data to read together.
+    * @param v true to ename merged read.
+    * @param handler the handler when merge read is enabled.
+    * @see https://github.com/winlinvip/simple-rtmp-server/issues/241
+    */
+    virtual void set_merge_read(bool v, IMergeReadHandler* handler);
 };
 
 #endif

@@ -745,6 +745,11 @@ void SrsRtmpServer::set_auto_response(bool v)
     protocol->set_auto_response(v);
 }
 
+void SrsRtmpServer::set_merge_read(bool v, IMergeReadHandler* handler)
+{
+    protocol->set_merge_read(v, handler);
+}
+
 void SrsRtmpServer::set_recv_timeout(int64_t timeout_us)
 {
     protocol->set_recv_timeout(timeout_us);

@@ -46,6 +46,7 @@ class SrsPlayPacket;
 class SrsMessage;
 class SrsPacket;
 class SrsAmf0Object;
+class IMergeReadHandler;
 
 /**
 * the original request from client.
@@ -343,6 +344,15 @@ public:
     */
     virtual void set_auto_response(bool v);
     /**
+    * to improve read performance, merge some packets then read,
+    * when it on and read small bytes, we sleep to wait more data.,
+    * that is, we merge some data to read together.
+    * @param v true to ename merged read.
+    * @param handler the handler when merge read is enabled.
+    * @see https://github.com/winlinvip/simple-rtmp-server/issues/241
+    */
+    virtual void set_merge_read(bool v, IMergeReadHandler* handler);
+    /**
     * set/get the recv timeout in us.
     * if timeout, recv/send message return ERROR_SOCKET_TIMEOUT.
     */

@@ -479,6 +479,11 @@ int SrsProtocol::manual_response_flush()
     return ret;
 }
 
+void SrsProtocol::set_merge_read(bool v, IMergeReadHandler* handler)
+{
+    in_buffer->set_merge_read(v, handler);
+}
+
 void SrsProtocol::set_recv_timeout(int64_t timeout_us)
 {
     return skt->set_recv_timeout(timeout_us);

@@ -53,6 +53,7 @@ class SrsMessageHeader;
 class SrsMessage;
 class SrsChunkStream;
 class SrsSharedPtrMessage;
+class IMergeReadHandler;
 
 /**
 * 4.1. Message Header
@@ -271,6 +272,16 @@ public:
     virtual int manual_response_flush();
 public:
     /**
+    * to improve read performance, merge some packets then read,
+    * when it on and read small bytes, we sleep to wait more data.,
+    * that is, we merge some data to read together.
+    * @param v true to ename merged read.
+    * @param handler the handler when merge read is enabled.
+    * @see https://github.com/winlinvip/simple-rtmp-server/issues/241
+    */
+    virtual void set_merge_read(bool v, IMergeReadHandler* handler);
+public:
+    /**
     * set/get the recv timeout in us.
     * if timeout, recv/send message return ERROR_SOCKET_TIMEOUT.
     */