| OLD | NEW |
|---|
| (Empty) |
| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef MOJO_EDK_SYSTEM_CORE_H_ | |
| 6 #define MOJO_EDK_SYSTEM_CORE_H_ | |
| 7 | |
| 8 #include <stdint.h> | |
| 9 | |
| 10 #include "base/callback.h" | |
| 11 #include "base/macros.h" | |
| 12 #include "base/memory/ref_counted.h" | |
| 13 #include "base/memory/scoped_ptr.h" | |
| 14 #include "base/synchronization/lock.h" | |
| 15 #include "mojo/edk/system/handle_table.h" | |
| 16 #include "mojo/edk/system/mapping_table.h" | |
| 17 #include "mojo/edk/system/memory.h" | |
| 18 #include "mojo/edk/system/system_impl_export.h" | |
| 19 #include "mojo/public/c/system/buffer.h" | |
| 20 #include "mojo/public/c/system/data_pipe.h" | |
| 21 #include "mojo/public/c/system/message_pipe.h" | |
| 22 #include "mojo/public/c/system/types.h" | |
| 23 | |
| 24 namespace mojo { | |
| 25 | |
| 26 namespace embedder { | |
| 27 class PlatformSupport; | |
| 28 } | |
| 29 | |
| 30 namespace system { | |
| 31 | |
| 32 class Dispatcher; | |
| 33 struct HandleSignalsState; | |
| 34 | |
| 35 // |Core| is an object that implements the Mojo system calls. All public methods | |
| 36 // are thread-safe. | |
| 37 class MOJO_SYSTEM_IMPL_EXPORT Core { | |
| 38 public: | |
| 39 // --------------------------------------------------------------------------- | |
| 40 | |
| 41 // These methods are only to be used by via the embedder API (and internally): | |
| 42 explicit Core(scoped_ptr<embedder::PlatformSupport> platform_support); | |
| 43 virtual ~Core(); | |
| 44 | |
| 45 // Adds |dispatcher| to the handle table, returning the handle for it. Returns | |
| 46 // |MOJO_HANDLE_INVALID| on failure, namely if the handle table is full. | |
| 47 MojoHandle AddDispatcher(const scoped_refptr<Dispatcher>& dispatcher); | |
| 48 | |
| 49 // Looks up the dispatcher for the given handle. Returns null if the handle is | |
| 50 // invalid. | |
| 51 scoped_refptr<Dispatcher> GetDispatcher(MojoHandle handle); | |
| 52 | |
| 53 // Watches on the given handle for the given signals, calling |callback| when | |
| 54 // a signal is satisfied or when all signals become unsatisfiable. |callback| | |
| 55 // must satisfy stringent requirements -- see |Awakable::Awake()| in | |
| 56 // awakable.h. In particular, it must not call any Mojo system functions. | |
| 57 MojoResult AsyncWait(MojoHandle handle, | |
| 58 MojoHandleSignals signals, | |
| 59 base::Callback<void(MojoResult)> callback); | |
| 60 | |
| 61 embedder::PlatformSupport* platform_support() const { | |
| 62 return platform_support_.get(); | |
| 63 } | |
| 64 | |
| 65 // --------------------------------------------------------------------------- | |
| 66 | |
| 67 // System calls implementation: | |
| 68 MojoTimeTicks GetTimeTicksNow(); | |
| 69 MojoResult Close(MojoHandle handle); | |
| 70 MojoResult Wait(MojoHandle handle, | |
| 71 MojoHandleSignals signals, | |
| 72 MojoDeadline deadline, | |
| 73 UserPointer<MojoHandleSignalsState> signals_state); | |
| 74 MojoResult WaitMany(UserPointer<const MojoHandle> handles, | |
| 75 UserPointer<const MojoHandleSignals> signals, | |
| 76 uint32_t num_handles, | |
| 77 MojoDeadline deadline, | |
| 78 UserPointer<uint32_t> result_index, | |
| 79 UserPointer<MojoHandleSignalsState> signals_states); | |
| 80 MojoResult CreateMessagePipe( | |
| 81 UserPointer<const MojoCreateMessagePipeOptions> options, | |
| 82 UserPointer<MojoHandle> message_pipe_handle0, | |
| 83 UserPointer<MojoHandle> message_pipe_handle1); | |
| 84 MojoResult WriteMessage(MojoHandle message_pipe_handle, | |
| 85 UserPointer<const void> bytes, | |
| 86 uint32_t num_bytes, | |
| 87 UserPointer<const MojoHandle> handles, | |
| 88 uint32_t num_handles, | |
| 89 MojoWriteMessageFlags flags); | |
| 90 MojoResult ReadMessage(MojoHandle message_pipe_handle, | |
| 91 UserPointer<void> bytes, | |
| 92 UserPointer<uint32_t> num_bytes, | |
| 93 UserPointer<MojoHandle> handles, | |
| 94 UserPointer<uint32_t> num_handles, | |
| 95 MojoReadMessageFlags flags); | |
| 96 MojoResult CreateDataPipe( | |
| 97 UserPointer<const MojoCreateDataPipeOptions> options, | |
| 98 UserPointer<MojoHandle> data_pipe_producer_handle, | |
| 99 UserPointer<MojoHandle> data_pipe_consumer_handle); | |
| 100 MojoResult WriteData(MojoHandle data_pipe_producer_handle, | |
| 101 UserPointer<const void> elements, | |
| 102 UserPointer<uint32_t> num_bytes, | |
| 103 MojoWriteDataFlags flags); | |
| 104 MojoResult BeginWriteData(MojoHandle data_pipe_producer_handle, | |
| 105 UserPointer<void*> buffer, | |
| 106 UserPointer<uint32_t> buffer_num_bytes, | |
| 107 MojoWriteDataFlags flags); | |
| 108 MojoResult EndWriteData(MojoHandle data_pipe_producer_handle, | |
| 109 uint32_t num_bytes_written); | |
| 110 MojoResult ReadData(MojoHandle data_pipe_consumer_handle, | |
| 111 UserPointer<void> elements, | |
| 112 UserPointer<uint32_t> num_bytes, | |
| 113 MojoReadDataFlags flags); | |
| 114 MojoResult BeginReadData(MojoHandle data_pipe_consumer_handle, | |
| 115 UserPointer<const void*> buffer, | |
| 116 UserPointer<uint32_t> buffer_num_bytes, | |
| 117 MojoReadDataFlags flags); | |
| 118 MojoResult EndReadData(MojoHandle data_pipe_consumer_handle, | |
| 119 uint32_t num_bytes_read); | |
| 120 MojoResult CreateSharedBuffer( | |
| 121 UserPointer<const MojoCreateSharedBufferOptions> options, | |
| 122 uint64_t num_bytes, | |
| 123 UserPointer<MojoHandle> shared_buffer_handle); | |
| 124 MojoResult DuplicateBufferHandle( | |
| 125 MojoHandle buffer_handle, | |
| 126 UserPointer<const MojoDuplicateBufferHandleOptions> options, | |
| 127 UserPointer<MojoHandle> new_buffer_handle); | |
| 128 MojoResult MapBuffer(MojoHandle buffer_handle, | |
| 129 uint64_t offset, | |
| 130 uint64_t num_bytes, | |
| 131 UserPointer<void*> buffer, | |
| 132 MojoMapBufferFlags flags); | |
| 133 MojoResult UnmapBuffer(UserPointer<void> buffer); | |
| 134 | |
| 135 private: | |
| 136 friend bool internal::ShutdownCheckNoLeaks(Core*); | |
| 137 | |
| 138 // Internal implementation of |Wait()| and |WaitMany()|; doesn't do basic | |
| 139 // validation of arguments. |*result_index| is only set if the result (whether | |
| 140 // success or failure) applies to a specific handle, so its value should be | |
| 141 // preinitialized to |static_cast<uint32_t>(-1)|. | |
| 142 MojoResult WaitManyInternal(const MojoHandle* handles, | |
| 143 const MojoHandleSignals* signals, | |
| 144 uint32_t num_handles, | |
| 145 MojoDeadline deadline, | |
| 146 uint32_t* result_index, | |
| 147 HandleSignalsState* signals_states); | |
| 148 | |
| 149 const scoped_ptr<embedder::PlatformSupport> platform_support_; | |
| 150 | |
| 151 // TODO(vtl): |handle_table_lock_| should be a reader-writer lock (if only we | |
| 152 // had them). | |
| 153 base::Lock handle_table_lock_; // Protects |handle_table_|. | |
| 154 HandleTable handle_table_; | |
| 155 | |
| 156 base::Lock mapping_table_lock_; // Protects |mapping_table_|. | |
| 157 MappingTable mapping_table_; | |
| 158 | |
| 159 DISALLOW_COPY_AND_ASSIGN(Core); | |
| 160 }; | |
| 161 | |
| 162 } // namespace system | |
| 163 } // namespace mojo | |
| 164 | |
| 165 #endif // MOJO_EDK_SYSTEM_CORE_H_ | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 814543006:
Move //mojo/{public, edk} underneath //third_party (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master