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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef PPAPI_PROXY_PPB_MESSAGE_LOOP_PROXY_H_ | 5 #ifndef PPAPI_PROXY_PPB_MESSAGE_LOOP_PROXY_H_ |
6 #define PPAPI_PROXY_PPB_MESSAGE_LOOP_PROXY_H_ | 6 #define PPAPI_PROXY_PPB_MESSAGE_LOOP_PROXY_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 #include "base/bind.h" | 9 #include "base/bind.h" |
10 #include "base/memory/ref_counted.h" | 10 #include "base/memory/ref_counted.h" |
11 #include "base/memory/scoped_ptr.h" | 11 #include "base/memory/scoped_ptr.h" |
12 #include "base/message_loop/message_loop.h" | 12 #include "base/message_loop/message_loop.h" |
| 13 #include "base/single_thread_task_runner.h" |
13 #include "ppapi/proxy/interface_proxy.h" | 14 #include "ppapi/proxy/interface_proxy.h" |
14 #include "ppapi/proxy/ppapi_proxy_export.h" | 15 #include "ppapi/proxy/ppapi_proxy_export.h" |
15 #include "ppapi/shared_impl/ppb_message_loop_shared.h" | 16 #include "ppapi/shared_impl/ppb_message_loop_shared.h" |
16 #include "ppapi/thunk/ppb_message_loop_api.h" | 17 #include "ppapi/thunk/ppb_message_loop_api.h" |
17 | 18 |
18 struct PPB_MessageLoop_1_0; | 19 struct PPB_MessageLoop_1_0; |
19 | 20 |
20 namespace ppapi { | 21 namespace ppapi { |
21 namespace proxy { | 22 namespace proxy { |
22 | 23 |
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36 int32_t Run() override; | 37 int32_t Run() override; |
37 int32_t PostWork(PP_CompletionCallback callback, int64_t delay_ms) override; | 38 int32_t PostWork(PP_CompletionCallback callback, int64_t delay_ms) override; |
38 int32_t PostQuit(PP_Bool should_destroy) override; | 39 int32_t PostQuit(PP_Bool should_destroy) override; |
39 | 40 |
40 static MessageLoopResource* GetCurrent(); | 41 static MessageLoopResource* GetCurrent(); |
41 void DetachFromThread(); | 42 void DetachFromThread(); |
42 bool is_main_thread_loop() const { | 43 bool is_main_thread_loop() const { |
43 return is_main_thread_loop_; | 44 return is_main_thread_loop_; |
44 } | 45 } |
45 | 46 |
46 const scoped_refptr<base::MessageLoopProxy>& message_loop_proxy() { | 47 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner() { |
47 return loop_proxy_; | 48 return task_runner_; |
48 } | 49 } |
49 | 50 |
50 void set_currently_handling_blocking_message(bool handling_blocking_message) { | 51 void set_currently_handling_blocking_message(bool handling_blocking_message) { |
51 currently_handling_blocking_message_ = handling_blocking_message; | 52 currently_handling_blocking_message_ = handling_blocking_message; |
52 } | 53 } |
53 | 54 |
54 private: | 55 private: |
55 struct TaskInfo { | 56 struct TaskInfo { |
56 tracked_objects::Location from_here; | 57 tracked_objects::Location from_here; |
57 base::Closure closure; | 58 base::Closure closure; |
58 int64 delay_ms; | 59 int64 delay_ms; |
59 }; | 60 }; |
60 | 61 |
61 // Returns true if the object is associated with the current thread. | 62 // Returns true if the object is associated with the current thread. |
62 bool IsCurrent() const; | 63 bool IsCurrent() const; |
63 | 64 |
64 // MessageLoopShared implementation. | 65 // MessageLoopShared implementation. |
65 // | 66 // |
66 // Handles posting to the message loop if there is one, or the pending queue | 67 // Handles posting to the message loop if there is one, or the pending queue |
67 // if there isn't. | 68 // if there isn't. |
68 // NOTE: The given closure will be run *WITHOUT* acquiring the Proxy lock. | 69 // NOTE: The given closure will be run *WITHOUT* acquiring the Proxy lock. |
69 // This only makes sense for user code and completely thread-safe | 70 // This only makes sense for user code and completely thread-safe |
70 // proxy operations (e.g., MessageLoop::QuitClosure). | 71 // proxy operations (e.g., MessageLoop::QuitClosure). |
71 void PostClosure(const tracked_objects::Location& from_here, | 72 void PostClosure(const tracked_objects::Location& from_here, |
72 const base::Closure& closure, | 73 const base::Closure& closure, |
73 int64 delay_ms) override; | 74 int64 delay_ms) override; |
74 base::MessageLoopProxy* GetMessageLoopProxy() override; | 75 base::SingleThreadTaskRunner* GetTaskRunner() override; |
75 bool CurrentlyHandlingBlockingMessage() override; | 76 bool CurrentlyHandlingBlockingMessage() override; |
76 | 77 |
77 // TLS destructor function. | 78 // TLS destructor function. |
78 static void ReleaseMessageLoop(void* value); | 79 static void ReleaseMessageLoop(void* value); |
79 | 80 |
80 // Created when we attach to the current thread, since MessageLoop assumes | 81 // Created when we attach to the current thread, since MessageLoop assumes |
81 // that it's created on the thread it will run on. NULL for the main thread | 82 // that it's created on the thread it will run on. NULL for the main thread |
82 // loop, since that's owned by somebody else. This is needed for Run and Quit. | 83 // loop, since that's owned by somebody else. This is needed for Run and Quit. |
83 // Any time we post tasks, we should post them using loop_proxy_. | 84 // Any time we post tasks, we should post them using task_runner_. |
84 scoped_ptr<base::MessageLoop> loop_; | 85 scoped_ptr<base::MessageLoop> loop_; |
85 scoped_refptr<base::MessageLoopProxy> loop_proxy_; | 86 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; |
86 | 87 |
87 // Number of invocations of Run currently on the stack. | 88 // Number of invocations of Run currently on the stack. |
88 int nested_invocations_; | 89 int nested_invocations_; |
89 | 90 |
90 // Set to true when the message loop is destroyed to prevent forther | 91 // Set to true when the message loop is destroyed to prevent forther |
91 // posting of work. | 92 // posting of work. |
92 bool destroyed_; | 93 bool destroyed_; |
93 | 94 |
94 // Set to true if all message loop invocations should exit and that the | 95 // Set to true if all message loop invocations should exit and that the |
95 // loop should be destroyed once it reaches the outermost Run invocation. | 96 // loop should be destroyed once it reaches the outermost Run invocation. |
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115 static const PPB_MessageLoop_1_0* GetInterface(); | 116 static const PPB_MessageLoop_1_0* GetInterface(); |
116 | 117 |
117 private: | 118 private: |
118 DISALLOW_COPY_AND_ASSIGN(PPB_MessageLoop_Proxy); | 119 DISALLOW_COPY_AND_ASSIGN(PPB_MessageLoop_Proxy); |
119 }; | 120 }; |
120 | 121 |
121 } // namespace proxy | 122 } // namespace proxy |
122 } // namespace ppapi | 123 } // namespace ppapi |
123 | 124 |
124 #endif // PPAPI_PROXY_PPB_MESSAGE_LOOP_PROXY_H_ | 125 #endif // PPAPI_PROXY_PPB_MESSAGE_LOOP_PROXY_H_ |
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