1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef MOJO_PUBLIC_CPP_BINDINGS_SYNC_DISPATCHER_H_ 6 #define MOJO_PUBLIC_CPP_BINDINGS_SYNC_DISPATCHER_H_ 7 8 #include "mojo/public/cpp/bindings/lib/filter_chain.h" 9 #include "mojo/public/cpp/bindings/lib/message_header_validator.h" 10 #include "mojo/public/cpp/system/core.h" 11 12 namespace mojo { 13 14 class MessageReceiver; 15 16 // Waits for one message to arrive on the message pipe, and dispatch it to the 17 // receiver. Returns true on success, false on failure. 18 // 19 // NOTE: The message hasn't been validated and may be malformed! 20 bool WaitForMessageAndDispatch(MessagePipeHandle handle, 21 mojo::MessageReceiver* receiver); 22 23 template<typename Interface> class SyncDispatcher { 24 public: SyncDispatcher(ScopedMessagePipeHandle message_pipe,Interface * sink)25 SyncDispatcher(ScopedMessagePipeHandle message_pipe, Interface* sink) 26 : message_pipe_(message_pipe.Pass()) { 27 stub_.set_sink(sink); 28 29 filters_.Append<internal::MessageHeaderValidator>(); 30 filters_.Append<typename Interface::RequestValidator_>(); 31 filters_.SetSink(&stub_); 32 } 33 WaitAndDispatchOneMessage()34 bool WaitAndDispatchOneMessage() { 35 return WaitForMessageAndDispatch(message_pipe_.get(), 36 filters_.GetHead()); 37 } 38 39 private: 40 ScopedMessagePipeHandle message_pipe_; 41 typename Interface::Stub_ stub_; 42 internal::FilterChain filters_; 43 }; 44 45 } // namespace mojo 46 47 #endif // MOJO_PUBLIC_CPP_BINDINGS_SYNC_DISPATCHER_H_ 48