Speed up secure sockets by increasing encrypted buffer size.

runtime/bin/secure_socket.h

 // Copyright (c) 2012, 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.
 
 #ifndef BIN_SECURE_SOCKET_H_
 #define BIN_SECURE_SOCKET_H_
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
@@ skipping 41 matching lines @@
  * and certificate verification.
  */
 class SSLFilter {
  public:
   // These enums must agree with those in sdk/lib/io/secure_socket.dart.
   enum BufferIndex {
     kReadPlaintext,
     kWritePlaintext,
     kReadEncrypted,
     kWriteEncrypted,
-    kNumBuffers
+    kNumBuffers,
+    kFirstEncrypted = kReadEncrypted
   };
 
   SSLFilter()
       : string_start_(NULL),
         string_length_(NULL),
         handshake_complete_(NULL),
         bad_certificate_callback_(NULL),
         in_handshake_(false),
         client_certificate_name_(NULL),
         filter_(NULL) { }
@@ skipping 18 matching lines @@
   intptr_t ProcessBuffer(int bufferIndex);
   Dart_Handle PeerCertificate();
 
  private:
   static const int kMemioBufferSize = 20 * KB;
   static bool library_initialized_;
   static const char* password_;
   static dart::Mutex mutex_;  // To protect library initialization.
 
   uint8_t* buffers_[kNumBuffers];
-  int64_t buffer_size_;
+  int buffer_size_;
+  int encrypted_buffer_size_;
   Dart_Handle string_start_;
   Dart_Handle string_length_;
   Dart_Handle dart_buffer_objects_[kNumBuffers];
   Dart_Handle handshake_complete_;
   Dart_Handle bad_certificate_callback_;
   bool in_handshake_;
   bool is_server_;
   char* client_certificate_name_;
   PRFileDesc* filter_;
 
+  static bool isEncrypted(int i) {
+    return static_cast<BufferIndex>(i) >= kFirstEncrypted;
+  }
   void InitializeBuffers(Dart_Handle dart_this);
   void InitializePlatformData();
 
   DISALLOW_COPY_AND_ASSIGN(SSLFilter);
 };
 
 #endif  // BIN_SECURE_SOCKET_H_