Coalesce small buffers in net::BidirectionalStream

components/cronet/android/cronet_bidirectional_stream_adapter.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_CRONET_ANDROID_CRONET_BIDIRECTIONAL_STREAM_ADAPTER_H_
 #define COMPONENTS_CRONET_ANDROID_CRONET_BIDIRECTIONAL_STREAM_ADAPTER_H_
 
 #include <jni.h>
 #include <string>
 
@@ skipping 25 matching lines @@
 // Java BidirectionalStream is expected to initiate the next step like ReadData
 // or Destroy. Public methods can be called on any thread.
 class CronetBidirectionalStreamAdapter
     : public net::BidirectionalStream::Delegate {
  public:
   static bool RegisterJni(JNIEnv* env);
 
   CronetBidirectionalStreamAdapter(
       CronetURLRequestContextAdapter* context,
       JNIEnv* env,
-      const base::android::JavaParamRef<jobject>& jbidi_stream);
+      const base::android::JavaParamRef<jobject>& jbidi_stream,
+      bool jdisable_auto_flush);
   ~CronetBidirectionalStreamAdapter() override;
 
   // Validates method and headers, initializes and starts the request. If
   // |jend_of_stream| is true, then stream is half-closed after sending header
   // frame and no data is expected to be written.
   // Returns 0 if request is valid and started successfully,
   // Returns -1 if |jmethod| is not valid HTTP method name.
   // Returns position of invalid header value in |jheaders| if header name is
   // not valid.
   jint Start(JNIEnv* env,
@@ skipping 17 matching lines @@
   // |jlimit|-1. Arguments are preserved to ensure that |jbyte_buffer|
   // is not modified by the application during write. The |jend_of_stream| is
   // passed to remote to indicate end of stream.
   jboolean WriteData(JNIEnv* env,
                      const base::android::JavaParamRef<jobject>& jcaller,
                      const base::android::JavaParamRef<jobject>& jbyte_buffer,
                      jint jposition,
                      jint jlimit,
                      jboolean jend_of_stream);
 
+  jboolean WritevData(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& jcaller,
+      const base::android::JavaParamRef<jobjectArray>& jbyte_buffers,
+      const base::android::JavaParamRef<jintArray>& jpositions,
+      const base::android::JavaParamRef<jintArray>& jlimits,
+      jboolean jend_of_stream);
+
   // Releases all resources for the request and deletes the object itself.
   // |jsend_on_canceled| indicates if Java onCanceled callback should be
   // issued to indicate that no more callbacks will be issued.
   void Destroy(JNIEnv* env,
                const base::android::JavaParamRef<jobject>& jcaller,
                jboolean jsend_on_canceled);
 
  private:
+  typedef std::vector<scoped_refptr<IOBufferWithByteBuffer>> IOByteBufferList;
   // net::BidirectionalStream::Delegate implementations:
-  void OnHeadersSent() override;
+  void OnStreamReady() override;
   void OnHeadersReceived(const net::SpdyHeaderBlock& response_headers) override;
   void OnDataRead(int bytes_read) override;
   void OnDataSent() override;
   void OnTrailersReceived(const net::SpdyHeaderBlock& trailers) override;
   void OnFailed(int error) override;
 
   void StartOnNetworkThread(
       scoped_ptr<net::BidirectionalStreamRequestInfo> request_info);
   void ReadDataOnNetworkThread(
       scoped_refptr<IOBufferWithByteBuffer> read_buffer,
       int buffer_size);
   void WriteDataOnNetworkThread(
       scoped_refptr<IOBufferWithByteBuffer> read_buffer,
-      int buffer_size,
       bool end_of_stream);
+  void WritevDataOnNetworkThread(const IOByteBufferList& buffers,
+                                 bool end_of_stream);
   void DestroyOnNetworkThread(bool send_on_canceled);
   // Gets headers as a Java array.
   base::android::ScopedJavaLocalRef<jobjectArray> GetHeadersArray(
       JNIEnv* env,
       const net::SpdyHeaderBlock& header_block);
 
   CronetURLRequestContextAdapter* const context_;
 
   // Java object that owns this CronetBidirectionalStreamAdapter.
   base::android::ScopedJavaGlobalRef<jobject> owner_;
+  const bool disable_auto_flush_;
+  // Whether an end of stream flag is passed in through a write call.
+  // Not applicable to HTTP methods that do not send data.
+  bool write_end_of_stream_;
 
   scoped_refptr<IOBufferWithByteBuffer> read_buffer_;
   scoped_refptr<IOBufferWithByteBuffer> write_buffer_;
+  IOByteBufferList write_buffer_list_;
   scoped_ptr<net::BidirectionalStream> bidi_stream_;
 
   DISALLOW_COPY_AND_ASSIGN(CronetBidirectionalStreamAdapter);
 };
 
 }  // namespace cronet
 
 #endif  // COMPONENTS_CRONET_ANDROID_CRONET_BIDIRECTIONAL_STREAM_ADAPTER_H_