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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 MOJO_PUBLIC_CPP_UTILITY_RUN_LOOP_H_ | 5 #ifndef MOJO_PUBLIC_CPP_UTILITY_RUN_LOOP_H_ |
6 #define MOJO_PUBLIC_CPP_UTILITY_RUN_LOOP_H_ | 6 #define MOJO_PUBLIC_CPP_UTILITY_RUN_LOOP_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 | 9 |
10 #include "mojo/public/cpp/system/core.h" | 10 #include "mojo/public/cpp/system/core.h" |
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26 static void TearDown(); | 26 static void TearDown(); |
27 | 27 |
28 // Returns the RunLoop for the current thread. Returns NULL if not yet | 28 // Returns the RunLoop for the current thread. Returns NULL if not yet |
29 // created. | 29 // created. |
30 static RunLoop* current(); | 30 static RunLoop* current(); |
31 | 31 |
32 // Registers a RunLoopHandler for the specified handle. Only one handler can | 32 // Registers a RunLoopHandler for the specified handle. Only one handler can |
33 // be registered for a specified handle. | 33 // be registered for a specified handle. |
34 void AddHandler(RunLoopHandler* handler, | 34 void AddHandler(RunLoopHandler* handler, |
35 const Handle& handle, | 35 const Handle& handle, |
36 MojoWaitFlags wait_flags, | 36 MojoHandleSignals handle_signals, |
37 MojoDeadline deadline); | 37 MojoDeadline deadline); |
38 void RemoveHandler(const Handle& handle); | 38 void RemoveHandler(const Handle& handle); |
39 bool HasHandler(const Handle& handle) const; | 39 bool HasHandler(const Handle& handle) const; |
40 | 40 |
41 // Runs the loop servicing handles as they are ready. This returns when Quit() | 41 // Runs the loop servicing handles as they are ready. This returns when Quit() |
42 // is invoked, or there no more handles. | 42 // is invoked, or there no more handles. |
43 void Run(); | 43 void Run(); |
44 | 44 |
45 // Runs the loop servicing any handles that are ready. Does not wait for | 45 // Runs the loop servicing any handles that are ready. Does not wait for |
46 // handles to become ready before returning. Returns early if Quit() is | 46 // handles to become ready before returning. Returns early if Quit() is |
47 // invoked. | 47 // invoked. |
48 void RunUntilIdle(); | 48 void RunUntilIdle(); |
49 | 49 |
50 void Quit(); | 50 void Quit(); |
51 | 51 |
52 private: | 52 private: |
53 struct RunState; | 53 struct RunState; |
54 struct WaitState; | 54 struct WaitState; |
55 | 55 |
56 // Contains the data needed to track a request to AddHandler(). | 56 // Contains the data needed to track a request to AddHandler(). |
57 struct HandlerData { | 57 struct HandlerData { |
58 HandlerData() | 58 HandlerData() |
59 : handler(NULL), | 59 : handler(NULL), |
60 wait_flags(MOJO_WAIT_FLAG_NONE), | 60 handle_signals(MOJO_WAIT_FLAG_NONE), |
61 deadline(0), | 61 deadline(0), |
62 id(0) {} | 62 id(0) {} |
63 | 63 |
64 RunLoopHandler* handler; | 64 RunLoopHandler* handler; |
65 MojoWaitFlags wait_flags; | 65 MojoHandleSignals handle_signals; |
66 MojoTimeTicks deadline; | 66 MojoTimeTicks deadline; |
67 // See description of |RunLoop::next_handler_id_| for details. | 67 // See description of |RunLoop::next_handler_id_| for details. |
68 int id; | 68 int id; |
69 }; | 69 }; |
70 | 70 |
71 typedef std::map<Handle, HandlerData> HandleToHandlerData; | 71 typedef std::map<Handle, HandlerData> HandleToHandlerData; |
72 | 72 |
73 // Waits for a handle to be ready. Returns after servicing at least one | 73 // Waits for a handle to be ready. Returns after servicing at least one |
74 // handle (or there are no more handles) unless |non_blocking| is true, | 74 // handle (or there are no more handles) unless |non_blocking| is true, |
75 // in which case it will also return if servicing at least one handle | 75 // in which case it will also return if servicing at least one handle |
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99 // match it means the handler was removed then added so that we shouldn't | 99 // match it means the handler was removed then added so that we shouldn't |
100 // notify it. | 100 // notify it. |
101 int next_handler_id_; | 101 int next_handler_id_; |
102 | 102 |
103 MOJO_DISALLOW_COPY_AND_ASSIGN(RunLoop); | 103 MOJO_DISALLOW_COPY_AND_ASSIGN(RunLoop); |
104 }; | 104 }; |
105 | 105 |
106 } // namespace mojo | 106 } // namespace mojo |
107 | 107 |
108 #endif // MOJO_PUBLIC_CPP_UTILITY_RUN_LOOP_H_ | 108 #endif // MOJO_PUBLIC_CPP_UTILITY_RUN_LOOP_H_ |
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