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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_EDK_SYSTEM_MESSAGE_PIPE_ENDPOINT_H_ | 5 #ifndef MOJO_EDK_SYSTEM_MESSAGE_PIPE_ENDPOINT_H_ |
| 6 #define MOJO_EDK_SYSTEM_MESSAGE_PIPE_ENDPOINT_H_ | 6 #define MOJO_EDK_SYSTEM_MESSAGE_PIPE_ENDPOINT_H_ |
| 7 | 7 |
| 8 #include <stdint.h> | 8 #include <stdint.h> |
| 9 | 9 |
| 10 #include <vector> | 10 #include <vector> |
| 11 | 11 |
| 12 #include "base/macros.h" | 12 #include "base/macros.h" |
| 13 #include "base/memory/ref_counted.h" | 13 #include "base/memory/ref_counted.h" |
| 14 #include "base/memory/scoped_ptr.h" | 14 #include "base/memory/scoped_ptr.h" |
| 15 #include "mojo/edk/system/dispatcher.h" | 15 #include "mojo/edk/system/dispatcher.h" |
| 16 #include "mojo/edk/system/memory.h" | 16 #include "mojo/edk/system/memory.h" |
| 17 #include "mojo/edk/system/message_in_transit.h" | 17 #include "mojo/edk/system/message_in_transit.h" |
| 18 #include "mojo/edk/system/system_impl_export.h" | 18 #include "mojo/edk/system/system_impl_export.h" |
| 19 #include "mojo/public/c/system/message_pipe.h" | 19 #include "mojo/public/c/system/message_pipe.h" |
| 20 #include "mojo/public/c/system/types.h" | 20 #include "mojo/public/c/system/types.h" |
| 21 | 21 |
| 22 namespace mojo { | 22 namespace mojo { |
| 23 namespace system { | 23 namespace system { |
| 24 | 24 |
| 25 class ChannelEndpoint; | 25 class ChannelEndpoint; |
| 26 class Waiter; | 26 class Awakable; |
| 27 | 27 |
| 28 // This is an interface to one of the ends of a message pipe, and is used by | 28 // This is an interface to one of the ends of a message pipe, and is used by |
| 29 // |MessagePipe|. Its most important role is to provide a sink for messages | 29 // |MessagePipe|. Its most important role is to provide a sink for messages |
| 30 // (i.e., a place where messages can be sent). It has a secondary role: When the | 30 // (i.e., a place where messages can be sent). It has a secondary role: When the |
| 31 // endpoint is local (i.e., in the current process), there'll be a dispatcher | 31 // endpoint is local (i.e., in the current process), there'll be a dispatcher |
| 32 // corresponding to the endpoint. In that case, the implementation of | 32 // corresponding to the endpoint. In that case, the implementation of |
| 33 // |MessagePipeEndpoint| also implements the functionality required by the | 33 // |MessagePipeEndpoint| also implements the functionality required by the |
| 34 // dispatcher, e.g., to read messages and to wait. Implementations of this class | 34 // dispatcher, e.g., to read messages and to wait. Implementations of this class |
| 35 // are not thread-safe; instances are protected by |MesssagePipe|'s lock. | 35 // are not thread-safe; instances are protected by |MesssagePipe|'s lock. |
| 36 class MOJO_SYSTEM_IMPL_EXPORT MessagePipeEndpoint { | 36 class MOJO_SYSTEM_IMPL_EXPORT MessagePipeEndpoint { |
| (...skipping 14 matching lines...) Expand all Loading... |
| 51 virtual void Close() = 0; | 51 virtual void Close() = 0; |
| 52 | 52 |
| 53 // Implementations must override these if they represent a local endpoint, | 53 // Implementations must override these if they represent a local endpoint, |
| 54 // i.e., one for which there's a |MessagePipeDispatcher| (and thus a handle). | 54 // i.e., one for which there's a |MessagePipeDispatcher| (and thus a handle). |
| 55 // An implementation for a proxy endpoint (for which there's no dispatcher) | 55 // An implementation for a proxy endpoint (for which there's no dispatcher) |
| 56 // needs not override these methods, since they should never be called. | 56 // needs not override these methods, since they should never be called. |
| 57 // | 57 // |
| 58 // These methods implement the methods of the same name in |MessagePipe|, | 58 // These methods implement the methods of the same name in |MessagePipe|, |
| 59 // though |MessagePipe|'s implementation may have to do a little more if the | 59 // though |MessagePipe|'s implementation may have to do a little more if the |
| 60 // operation involves both endpoints. | 60 // operation involves both endpoints. |
| 61 virtual void CancelAllWaiters(); | 61 virtual void CancelAllAwakables(); |
| 62 virtual MojoResult ReadMessage(UserPointer<void> bytes, | 62 virtual MojoResult ReadMessage(UserPointer<void> bytes, |
| 63 UserPointer<uint32_t> num_bytes, | 63 UserPointer<uint32_t> num_bytes, |
| 64 DispatcherVector* dispatchers, | 64 DispatcherVector* dispatchers, |
| 65 uint32_t* num_dispatchers, | 65 uint32_t* num_dispatchers, |
| 66 MojoReadMessageFlags flags); | 66 MojoReadMessageFlags flags); |
| 67 virtual HandleSignalsState GetHandleSignalsState() const; | 67 virtual HandleSignalsState GetHandleSignalsState() const; |
| 68 virtual MojoResult AddWaiter(Waiter* waiter, | 68 virtual MojoResult AddAwakable(Awakable* awakable, |
| 69 MojoHandleSignals signals, | 69 MojoHandleSignals signals, |
| 70 uint32_t context, | 70 uint32_t context, |
| 71 HandleSignalsState* signals_state); | 71 HandleSignalsState* signals_state); |
| 72 virtual void RemoveWaiter(Waiter* waiter, HandleSignalsState* signals_state); | 72 virtual void RemoveAwakable(Awakable* awakable, |
| 73 HandleSignalsState* signals_state); |
| 73 | 74 |
| 74 // Implementations must override these if they represent a proxy endpoint. An | 75 // Implementations must override these if they represent a proxy endpoint. An |
| 75 // implementation for a local endpoint needs not override these methods, since | 76 // implementation for a local endpoint needs not override these methods, since |
| 76 // they should never be called. | 77 // they should never be called. |
| 77 virtual void Attach(ChannelEndpoint* channel_endpoint); | 78 virtual void Attach(ChannelEndpoint* channel_endpoint); |
| 78 | 79 |
| 79 protected: | 80 protected: |
| 80 MessagePipeEndpoint() {} | 81 MessagePipeEndpoint() {} |
| 81 | 82 |
| 82 private: | 83 private: |
| 83 DISALLOW_COPY_AND_ASSIGN(MessagePipeEndpoint); | 84 DISALLOW_COPY_AND_ASSIGN(MessagePipeEndpoint); |
| 84 }; | 85 }; |
| 85 | 86 |
| 86 } // namespace system | 87 } // namespace system |
| 87 } // namespace mojo | 88 } // namespace mojo |
| 88 | 89 |
| 89 #endif // MOJO_EDK_SYSTEM_MESSAGE_PIPE_ENDPOINT_H_ | 90 #endif // MOJO_EDK_SYSTEM_MESSAGE_PIPE_ENDPOINT_H_ |
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