| // 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 MOJO_EMBEDDER_CHANNEL_INIT_H_ |
| #define MOJO_EMBEDDER_CHANNEL_INIT_H_ |
| |
| #include "base/files/file.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/weak_ptr.h" |
| #include "mojo/public/cpp/system/core.h" |
| #include "mojo/system/system_impl_export.h" |
| |
| namespace base { |
| class MessageLoopProxy; |
| class TaskRunner; |
| } |
| |
| namespace mojo { |
| namespace embedder { |
| struct ChannelInfo; |
| } |
| |
| namespace embedder { |
| |
| // |ChannelInit| handles creation (and destruction) of the Mojo channel. It is |
| // not thread-safe, but may be used on any single thread (with a |MessageLoop|). |
| class MOJO_SYSTEM_IMPL_EXPORT ChannelInit { |
| public: |
| ChannelInit(); |
| ~ChannelInit(); |
| |
| // Initializes the channel. This takes ownership of |file|. Returns the |
| // primordial MessagePipe for the channel. |
| mojo::ScopedMessagePipeHandle Init( |
| base::PlatformFile file, |
| scoped_refptr<base::TaskRunner> io_thread_task_runner); |
| |
| // Notifies the channel that we (hence it) will soon be destroyed. |
| void WillDestroySoon(); |
| |
| private: |
| // Invoked on the thread on which this object lives once the channel has been |
| // established. (This is a static method that takes a weak pointer to self, |
| // since we want to destroy the channel even if we're destroyed.) |
| static void OnCreatedChannel(base::WeakPtr<ChannelInit> self, |
| scoped_refptr<base::TaskRunner> io_thread, |
| ChannelInfo* channel); |
| |
| scoped_refptr<base::TaskRunner> io_thread_task_runner_; |
| |
| // If non-null the channel has been established. |
| ChannelInfo* channel_info_; |
| |
| base::WeakPtrFactory<ChannelInit> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ChannelInit); |
| }; |
| |
| } // namespace embedder |
| } // namespace mojo |
| |
| #endif // MOJO_EMBEDDER_CHANNEL_INIT_H_ |