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.
5 #ifndef MOJO_APPLICATION_MANAGER_BACKGROUND_SHELL_APPLICATION_LOADER_H_
6 #define MOJO_APPLICATION_MANAGER_BACKGROUND_SHELL_APPLICATION_LOADER_H_
8 #include "base/memory/scoped_ptr.h"
9 #include "base/message_loop/message_loop.h"
10 #include "base/synchronization/waitable_event.h"
11 #include "base/threading/simple_thread.h"
12 #include "mojo/application_manager/application_loader.h"
16 // TODO(tim): Eventually this should be Android-only to support services
17 // that we need to bundle with the shell (such as NetworkService). Perhaps
18 // we should move it to shell/ as well.
19 class MOJO_APPLICATION_MANAGER_EXPORT BackgroundShellApplicationLoader
20 : public ApplicationLoader
,
21 public base::DelegateSimpleThread::Delegate
{
23 BackgroundShellApplicationLoader(scoped_ptr
<ApplicationLoader
> real_loader
,
24 const std::string
& thread_name
,
25 base::MessageLoop::Type message_loop_type
);
26 virtual ~BackgroundShellApplicationLoader();
28 // ApplicationLoader overrides:
29 virtual void Load(ApplicationManager
* manager
,
31 scoped_refptr
<LoadCallbacks
> callbacks
) OVERRIDE
;
32 virtual void OnApplicationError(ApplicationManager
* manager
,
33 const GURL
& url
) OVERRIDE
;
36 class BackgroundLoader
;
38 // |base::DelegateSimpleThread::Delegate| method:
39 virtual void Run() OVERRIDE
;
41 // These functions are exected on the background thread. They call through
42 // to |background_loader_| to do the actual loading.
43 // TODO: having this code take a |manager| is fragile (as ApplicationManager
44 // isn't thread safe).
45 void LoadOnBackgroundThread(ApplicationManager
* manager
,
47 ScopedMessagePipeHandle
* shell_handle
);
48 void OnApplicationErrorOnBackgroundThread(ApplicationManager
* manager
,
50 bool quit_on_shutdown_
;
51 scoped_ptr
<ApplicationLoader
> loader_
;
53 const base::MessageLoop::Type message_loop_type_
;
54 const std::string thread_name_
;
56 // Created on |thread_| during construction of |this|. Protected against
57 // uninitialized use by |message_loop_created_|, and protected against
58 // use-after-free by holding a reference to the thread-safe object. Note
59 // that holding a reference won't hold |thread_| from exiting.
60 scoped_refptr
<base::TaskRunner
> task_runner_
;
61 base::WaitableEvent message_loop_created_
;
63 // Lives on |thread_|.
64 base::Closure quit_closure_
;
66 scoped_ptr
<base::DelegateSimpleThread
> thread_
;
68 // Lives on |thread_|. Trivial interface that calls through to |loader_|.
69 BackgroundLoader
* background_loader_
;
71 DISALLOW_COPY_AND_ASSIGN(BackgroundShellApplicationLoader
);
76 #endif // MOJO_APPLICATION_MANAGER_BACKGROUND_SHELL_APPLICATION_LOADER_H_