Add typed data interface to Dart API, this only changes the C++ API as dicussed in a previous email…

bin/socket.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "bin/io_buffer.h"
 #include "bin/socket.h"
 #include "bin/dartutils.h"
 #include "bin/thread.h"
 #include "bin/utils.h"
 
@@ skipping 167 matching lines @@
     Dart_PropagateError(result);
   }
   ASSERT((offset + length) <= buffer_len);
 
   if (short_socket_writes) {
     length = (length + 1) / 2;
   }
 
   intptr_t total_bytes_written = 0;
   intptr_t bytes_written = 0;
-  if (Dart_IsByteArrayExternal(buffer_obj)) {
-    void* buffer = NULL;
-    result = Dart_ExternalByteArrayGetData(buffer_obj, &buffer);
-    if (Dart_IsError(result)) {
-      Dart_PropagateError(result);
-    }
-    buffer = static_cast<void*>(static_cast<uint8_t*>(buffer) + offset);
+  Dart_TypedData_Type type;
+  uint8_t* buffer = NULL;
+  intptr_t len;
+  result = Dart_TypedDataAcquireData(buffer_obj, &type,
+                                     reinterpret_cast<void**>(&buffer), &len);
+  if (!Dart_IsError(result)) {
+    buffer += offset;
     bytes_written = Socket::Write(socket, buffer, length);
     if (bytes_written > 0) total_bytes_written = bytes_written;
+    Dart_TypedDataReleaseData(buffer_obj);
   } else {
     // Send data in chunks of maximum 16KB.
     const intptr_t max_chunk_length =
         dart::Utils::Minimum(length, static_cast<intptr_t>(16 * KB));
-    uint8_t* buffer = new uint8_t[max_chunk_length];
+    buffer = new uint8_t[max_chunk_length];
     do {
       intptr_t chunk_length =
           dart::Utils::Minimum(max_chunk_length, length - total_bytes_written);
       result = Dart_ListGetAsBytes(buffer_obj,
                                    offset + total_bytes_written,
                                    buffer,
                                    chunk_length);
       if (Dart_IsError(result)) {
         delete[] buffer;
         Dart_PropagateError(result);
@@ skipping 233 matching lines @@
 
 
 Dart_Handle Socket::SetSocketIdNativeField(Dart_Handle socket, intptr_t id) {
   return Dart_SetNativeInstanceField(socket, kSocketIdNativeField, id);
 }
 
 
 Dart_Handle Socket::GetSocketIdNativeField(Dart_Handle socket, intptr_t* id) {
   return Dart_GetNativeInstanceField(socket, kSocketIdNativeField, id);
 }