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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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