Adjust memory pressure from SSL

runtime/bin/secure_socket_boringssl.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 RUNTIME_BIN_SECURE_SOCKET_BORINGSSL_H_
 #define RUNTIME_BIN_SECURE_SOCKET_BORINGSSL_H_
 
 #if !defined(RUNTIME_BIN_SECURE_SOCKET_H_)
 #error Do not include secure_socket_boringssl.h directly. Use secure_socket.h.
 #endif
@@ skipping 17 matching lines @@
 
 namespace dart {
 namespace bin {
 
 /* These are defined in root_certificates.cc. */
 extern const unsigned char* root_certificates_pem;
 extern unsigned int root_certificates_pem_length;
 
 class SSLContext {
  public:
+  static const intptr_t kApproximateSize;
+
   explicit SSLContext(SSL_CTX* context)
       : context_(context), alpn_protocol_string_(NULL) {}
 
   ~SSLContext() {
     SSL_CTX_free(context_);
     if (alpn_protocol_string_ != NULL) {
       free(alpn_protocol_string_);
     }
   }
 
@@ skipping 26 matching lines @@
   // These enums must agree with those in sdk/lib/io/secure_socket.dart.
   enum BufferIndex {
     kReadPlaintext,
     kWritePlaintext,
     kReadEncrypted,
     kWriteEncrypted,
     kNumBuffers,
     kFirstEncrypted = kReadEncrypted
   };
 
+  static const intptr_t kApproximateSize;
+
   SSLFilter()
       : callback_error(NULL),
         ssl_(NULL),
         socket_side_(NULL),
         string_start_(NULL),
         string_length_(NULL),
         handshake_complete_(NULL),
         bad_certificate_callback_(NULL),
         in_handshake_(false),
         hostname_(NULL) {}
@@ skipping 32 matching lines @@
   static CObject* ProcessFilterRequest(const CObjectArray& request);
 
   // The index of the external data field in _ssl that points to the SSLFilter.
   static int filter_ssl_index;
 
   // TODO(whesse): make private:
   SSL* ssl_;
   BIO* socket_side_;
 
  private:
+  static const intptr_t kInternalBIOSize;
   static bool library_initialized_;
   static Mutex* mutex_;  // To protect library initialization.
 
   uint8_t* buffers_[kNumBuffers];
   int buffer_size_;
   int encrypted_buffer_size_;
   Dart_PersistentHandle string_start_;
   Dart_PersistentHandle string_length_;
   Dart_PersistentHandle dart_buffer_objects_[kNumBuffers];
   Dart_PersistentHandle handshake_complete_;
   Dart_PersistentHandle bad_certificate_callback_;
   bool in_handshake_;
   bool is_server_;
   char* hostname_;
 
   static bool isBufferEncrypted(int i) {
     return static_cast<BufferIndex>(i) >= kFirstEncrypted;
   }
   Dart_Handle InitializeBuffers(Dart_Handle dart_this);
   void InitializePlatformData();
 
   DISALLOW_COPY_AND_ASSIGN(SSLFilter);
 };
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // RUNTIME_BIN_SECURE_SOCKET_BORINGSSL_H_