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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 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_TRANSPORT_DATA_H_ | 5 #ifndef MOJO_EDK_SYSTEM_TRANSPORT_DATA_H_ |
6 #define MOJO_EDK_SYSTEM_TRANSPORT_DATA_H_ | 6 #define MOJO_EDK_SYSTEM_TRANSPORT_DATA_H_ |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <memory> | 10 #include <memory> |
11 #include <vector> | 11 #include <vector> |
12 | 12 |
13 #include "base/memory/aligned_memory.h" | 13 #include "base/memory/aligned_memory.h" |
14 #include "base/memory/scoped_ptr.h" | |
15 #include "build/build_config.h" | |
16 #include "mojo/edk/embedder/platform_handle.h" | 14 #include "mojo/edk/embedder/platform_handle.h" |
17 #include "mojo/edk/embedder/platform_handle_vector.h" | 15 #include "mojo/edk/embedder/platform_handle_vector.h" |
18 #include "mojo/edk/system/dispatcher.h" | 16 #include "mojo/edk/system/dispatcher.h" |
19 #include "mojo/edk/system/system_impl_export.h" | 17 #include "mojo/edk/system/system_impl_export.h" |
20 #include "mojo/public/cpp/system/macros.h" | 18 #include "mojo/public/cpp/system/macros.h" |
21 | 19 |
22 namespace mojo { | 20 namespace mojo { |
23 namespace system { | 21 namespace system { |
24 | 22 |
25 class Channel; | 23 class Channel; |
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83 // The maximum number of platform handles to attach for a single serialized | 81 // The maximum number of platform handles to attach for a single serialized |
84 // dispatcher. | 82 // dispatcher. |
85 static const size_t kMaxSerializedDispatcherPlatformHandles = 2; | 83 static const size_t kMaxSerializedDispatcherPlatformHandles = 2; |
86 | 84 |
87 // The maximum possible size of a valid transport data buffer. | 85 // The maximum possible size of a valid transport data buffer. |
88 static size_t GetMaxBufferSize(); | 86 static size_t GetMaxBufferSize(); |
89 | 87 |
90 // The maximum total number of platform handles that may be attached. | 88 // The maximum total number of platform handles that may be attached. |
91 static size_t GetMaxPlatformHandles(); | 89 static size_t GetMaxPlatformHandles(); |
92 | 90 |
93 TransportData(scoped_ptr<DispatcherVector> dispatchers, Channel* channel); | 91 TransportData(std::unique_ptr<DispatcherVector> dispatchers, |
| 92 Channel* channel); |
94 | 93 |
95 // This is used for users of |MessageInTransit|/|TransportData|/|RawChannel| | 94 // This is used for users of |MessageInTransit|/|TransportData|/|RawChannel| |
96 // that want to simply transport data and platform handles, and not | 95 // that want to simply transport data and platform handles, and not |
97 // |Dispatcher|s. (|Header| will be present, and zero except for | 96 // |Dispatcher|s. (|Header| will be present, and zero except for |
98 // |num_platform_handles|, and |platform_handle_table_offset| if necessary.) | 97 // |num_platform_handles|, and |platform_handle_table_offset| if necessary.) |
99 explicit TransportData( | 98 explicit TransportData( |
100 embedder::ScopedPlatformHandleVectorPtr platform_handles, | 99 embedder::ScopedPlatformHandleVectorPtr platform_handles, |
101 size_t serialized_platform_handle_size); | 100 size_t serialized_platform_handle_size); |
102 | 101 |
103 ~TransportData(); | 102 ~TransportData(); |
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134 | 133 |
135 // Gets the platform handle table from a (valid) |TransportData| buffer (which | 134 // Gets the platform handle table from a (valid) |TransportData| buffer (which |
136 // should have been validated using |ValidateBuffer()| first). | 135 // should have been validated using |ValidateBuffer()| first). |
137 static void GetPlatformHandleTable(const void* transport_data_buffer, | 136 static void GetPlatformHandleTable(const void* transport_data_buffer, |
138 size_t* num_platform_handles, | 137 size_t* num_platform_handles, |
139 const void** platform_handle_table); | 138 const void** platform_handle_table); |
140 | 139 |
141 // Deserializes dispatchers from the given (serialized) transport data buffer | 140 // Deserializes dispatchers from the given (serialized) transport data buffer |
142 // (typically from a |MessageInTransit::View|) and vector of platform handles. | 141 // (typically from a |MessageInTransit::View|) and vector of platform handles. |
143 // |buffer| should be non-null and |buffer_size| should be nonzero. | 142 // |buffer| should be non-null and |buffer_size| should be nonzero. |
144 static scoped_ptr<DispatcherVector> DeserializeDispatchers( | 143 static std::unique_ptr<DispatcherVector> DeserializeDispatchers( |
145 const void* buffer, | 144 const void* buffer, |
146 size_t buffer_size, | 145 size_t buffer_size, |
147 embedder::ScopedPlatformHandleVectorPtr platform_handles, | 146 embedder::ScopedPlatformHandleVectorPtr platform_handles, |
148 Channel* channel); | 147 Channel* channel); |
149 | 148 |
150 private: | 149 private: |
151 // To allow us to make compile-assertions about |Header|, etc. in the .cc | 150 // To allow us to make compile-assertions about |Header|, etc. in the .cc |
152 // file. | 151 // file. |
153 struct PrivateStructForCompileAsserts; | 152 struct PrivateStructForCompileAsserts; |
154 | 153 |
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183 // TODO(vtl): With C++11, change it to a vector of |ScopedPlatformHandle|s. | 182 // TODO(vtl): With C++11, change it to a vector of |ScopedPlatformHandle|s. |
184 embedder::ScopedPlatformHandleVectorPtr platform_handles_; | 183 embedder::ScopedPlatformHandleVectorPtr platform_handles_; |
185 | 184 |
186 MOJO_DISALLOW_COPY_AND_ASSIGN(TransportData); | 185 MOJO_DISALLOW_COPY_AND_ASSIGN(TransportData); |
187 }; | 186 }; |
188 | 187 |
189 } // namespace system | 188 } // namespace system |
190 } // namespace mojo | 189 } // namespace mojo |
191 | 190 |
192 #endif // MOJO_EDK_SYSTEM_TRANSPORT_DATA_H_ | 191 #endif // MOJO_EDK_SYSTEM_TRANSPORT_DATA_H_ |
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