| // Copyright 2014 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 IPC_IPC_CHANNEL_MOJO_H_ |
| #define IPC_IPC_CHANNEL_MOJO_H_ |
| |
| #include <stdint.h> |
| |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/scoped_vector.h" |
| #include "base/memory/weak_ptr.h" |
| #include "build/build_config.h" |
| #include "ipc/ipc_channel.h" |
| #include "ipc/ipc_channel_factory.h" |
| #include "ipc/ipc_export.h" |
| #include "ipc/mojo/ipc_message_pipe_reader.h" |
| #include "ipc/mojo/ipc_mojo_bootstrap.h" |
| #include "mojo/edk/embedder/scoped_platform_handle.h" |
| #include "mojo/public/cpp/system/core.h" |
| |
| namespace IPC { |
| |
| // Mojo-based IPC::Channel implementation over a Mojo message pipe. |
| // |
| // ChannelMojo builds a Mojo MessagePipe using the provided token and builds an |
| // associated interface for each direction on the channel. |
| // |
| // TODO(morrita): Add APIs to create extra MessagePipes to let |
| // Mojo-based objects talk over this Channel. |
| // |
| class IPC_MOJO_EXPORT ChannelMojo |
| : public Channel, |
| public MojoBootstrap::Delegate, |
| public NON_EXPORTED_BASE(internal::MessagePipeReader::Delegate) { |
| public: |
| // True if ChannelMojo should be used regardless of the flag. |
| static bool ShouldBeUsed(); |
| |
| // Create ChannelMojo. A bootstrap channel is created as well. |
| static scoped_ptr<ChannelMojo> Create(const std::string& token, |
| Mode mode, |
| Listener* listener); |
| |
| // Create a factory object for ChannelMojo. |
| // The factory is used to create Mojo-based ChannelProxy family. |
| // |host| must not be null. |
| static scoped_ptr<ChannelFactory> CreateServerFactory( |
| const std::string& token); |
| |
| static scoped_ptr<ChannelFactory> CreateClientFactory( |
| const std::string& token); |
| |
| ~ChannelMojo() override; |
| |
| // Channel implementation |
| bool Connect() override; |
| void Close() override; |
| bool Send(Message* message) override; |
| base::ProcessId GetPeerPID() const override; |
| base::ProcessId GetSelfPID() const override; |
| |
| #if defined(OS_POSIX) && !defined(OS_NACL) |
| int GetClientFileDescriptor() const override; |
| base::ScopedFD TakeClientFileDescriptor() override; |
| #endif // defined(OS_POSIX) && !defined(OS_NACL) |
| |
| // These access protected API of IPC::Message, which has ChannelMojo |
| // as a friend class. |
| static MojoResult WriteToMessageAttachmentSet( |
| mojo::Array<mojo::ScopedHandle> handle_buffer, |
| Message* message); |
| static MojoResult ReadFromMessageAttachmentSet( |
| Message* message, |
| mojo::Array<mojo::ScopedHandle>* handles); |
| |
| // MojoBootstrapDelegate implementation |
| void OnPipesAvailable(mojom::ChannelAssociatedPtrInfo send_channel, |
| mojom::ChannelAssociatedRequest receive_channel, |
| int32_t peer_pid) override; |
| void OnBootstrapError() override; |
| |
| // MessagePipeReader::Delegate |
| void OnMessageReceived(const Message& message) override; |
| void OnPipeClosed(internal::MessagePipeReader* reader) override; |
| void OnPipeError(internal::MessagePipeReader* reader) override; |
| |
| private: |
| ChannelMojo(const std::string& token, |
| Mode mode, |
| Listener* listener); |
| |
| void InitMessageReader(mojom::ChannelAssociatedPtrInfo sender, |
| mojom::ChannelAssociatedRequest receiver); |
| |
| void set_peer_pid(base::ProcessId pid) { peer_pid_ = pid; } |
| |
| // ChannelMojo needs to kill its MessagePipeReader in delayed manner |
| // because the channel wants to kill these readers during the |
| // notifications invoked by them. |
| typedef internal::MessagePipeReader::DelayedDeleter ReaderDeleter; |
| |
| scoped_ptr<internal::MessagePipeReader, ReaderDeleter> CreateMessageReader( |
| mojom::ChannelAssociatedPtrInfo sender, |
| mojom::ChannelAssociatedRequest receiver); |
| |
| scoped_ptr<MojoBootstrap> bootstrap_; |
| Listener* listener_; |
| base::ProcessId peer_pid_; |
| |
| scoped_ptr<internal::MessagePipeReader, ReaderDeleter> message_reader_; |
| std::vector<scoped_ptr<Message>> pending_messages_; |
| bool waiting_connect_; |
| |
| base::WeakPtrFactory<ChannelMojo> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ChannelMojo); |
| }; |
| |
| } // namespace IPC |
| |
| #endif // IPC_IPC_CHANNEL_MOJO_H_ |