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Side by Side Diff: mojo/edk/embedder/channel_init.h

Issue 814543006: Move //mojo/{public, edk} underneath //third_party (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Rebase Created 5 years, 11 months ago
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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_EDK_EMBEDDER_CHANNEL_INIT_H_
6 #define MOJO_EDK_EMBEDDER_CHANNEL_INIT_H_
7
8 #include "base/files/file.h"
9 #include "base/memory/ref_counted.h"
10 #include "base/memory/weak_ptr.h"
11 #include "mojo/edk/embedder/channel_info_forward.h"
12 #include "mojo/edk/system/system_impl_export.h"
13 #include "mojo/public/cpp/system/message_pipe.h"
14
15 namespace base {
16 class MessageLoopProxy;
17 class TaskRunner;
18 }
19
20 namespace mojo {
21 namespace embedder {
22
23 // |ChannelInit| handles creation (and destruction) of the Mojo channel. It is
24 // not thread-safe, but may be used on any single thread (with a |MessageLoop|).
25 class MOJO_SYSTEM_IMPL_EXPORT ChannelInit {
26 public:
27 ChannelInit();
28 ~ChannelInit();
29
30 // Initializes the channel. This takes ownership of |file|. Returns the
31 // primordial MessagePipe for the channel.
32 mojo::ScopedMessagePipeHandle Init(
33 base::PlatformFile file,
34 scoped_refptr<base::TaskRunner> io_thread_task_runner);
35
36 // Notifies the channel that we (hence it) will soon be destroyed.
37 void WillDestroySoon();
38
39 private:
40 // Invoked on the thread on which this object lives once the channel has been
41 // established. (This is a static method that takes a weak pointer to self,
42 // since we want to destroy the channel even if we're destroyed.)
43 static void OnCreatedChannel(base::WeakPtr<ChannelInit> self,
44 scoped_refptr<base::TaskRunner> io_thread,
45 ChannelInfo* channel);
46
47 scoped_refptr<base::TaskRunner> io_thread_task_runner_;
48
49 // If non-null the channel has been established.
50 ChannelInfo* channel_info_;
51
52 base::WeakPtrFactory<ChannelInit> weak_factory_;
53
54 DISALLOW_COPY_AND_ASSIGN(ChannelInit);
55 };
56
57 } // namespace embedder
58 } // namespace mojo
59
60 #endif // MOJO_EDK_EMBEDDER_CHANNEL_INIT_H_
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