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| 1 // Copyright 2015 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 package system | |
| 6 | |
| 7 import "math" | |
| 8 | |
| 9 // Go equivalent definitions of the various system types defined in Mojo. | |
| 10 // | |
| 11 type MojoTimeTicks int64 | |
| 12 type MojoHandle uint32 | |
| 13 type MojoResult uint32 | |
| 14 type MojoDeadline uint64 | |
| 15 type MojoHandleSignals uint32 | |
| 16 type MojoWriteMessageFlags uint32 | |
| 17 type MojoReadMessageFlags uint32 | |
| 18 type MojoWriteDataFlags uint32 | |
| 19 type MojoReadDataFlags uint32 | |
| 20 type MojoCreateDataPipeOptionsFlags uint32 | |
| 21 type MojoCreateMessagePipeOptionsFlags uint32 | |
| 22 type MojoCreateSharedBufferOptionsFlags uint32 | |
| 23 type MojoDuplicateBufferHandleOptionsFlags uint32 | |
| 24 type MojoMapBufferFlags uint32 | |
| 25 type MojoBufferInformationFlags uint32 | |
| 26 | |
| 27 const ( | |
| 28 MOJO_DEADLINE_INDEFINITE MojoDeadline = math.MaxUint64 | |
| 29 MOJO_HANDLE_INVALID MojoHandle = 0 | |
| 30 // TODO(vtl): Find a way of supporting the new, more flexible/extensible | |
| 31 // MojoResult (see mojo/public/c/syste/result.h). | |
| 32 MOJO_RESULT_OK MojoResult = 0x0 | |
| 33 MOJO_RESULT_CANCELLED MojoResult = 0x1 | |
| 34 MOJO_RESULT_UNKNOWN MojoResult = 0x2 | |
| 35 MOJO_RESULT_INVALID_ARGUMENT MojoResult = 0x3 | |
| 36 MOJO_RESULT_DEADLINE_EXCEEDED MojoResult = 0x4 | |
| 37 MOJO_RESULT_NOT_FOUND MojoResult = 0x5 | |
| 38 MOJO_RESULT_ALREADY_EXISTS MojoResult = 0x6 | |
| 39 MOJO_RESULT_PERMISSION_DENIED MojoResult = 0x7 | |
| 40 MOJO_RESULT_RESOURCE_EXHAUSTED MojoResult = 0x8 | |
| 41 MOJO_RESULT_FAILED_PRECONDITION MojoResult = 0x9 | |
| 42 MOJO_RESULT_ABORTED MojoResult = 0xa | |
| 43 MOJO_RESULT_OUT_OF_RANGE MojoResult = 0xb | |
| 44 MOJO_RESULT_UNIMPLEMENTED MojoResult = 0xc | |
| 45 MOJO_RESULT_INTERNAL MojoResult = 0xd | |
| 46 MOJO_RESULT_UNAVAILABLE MojoResult = 0xe | |
| 47 MOJO_RESULT_DATA_LOSS MojoResult = 0xf | |
| 48 // MOJO_RESULT_FAILED_PRECONDITION, subcode 0x001: | |
| 49 MOJO_RESULT_BUSY MojoResult = 0x0019 | |
| 50 // MOJO_RESULT_UNAVAILABLE, subcode 0x001: | |
| 51 MOJO_RESULT_SHOULD_WAIT MojoResult = 0x001e | |
| 52 | |
| 53 MOJO_HANDLE_SIGNAL_NONE MojoHandleSignals = 0 | |
| 54 MOJO_HANDLE_SIGNAL_READABLE MojoHandleSignals = 1 << 0 | |
| 55 MOJO_HANDLE_SIGNAL_WRITABLE MojoHandleSignals = 1 << 1 | |
| 56 MOJO_HANDLE_SIGNAL_PEER_CLOSED MojoHandleSignals = 1 << 2 | |
| 57 | |
| 58 MOJO_WRITE_MESSAGE_FLAG_NONE MojoWriteMessageFlags = 0 | |
| 59 MOJO_READ_MESSAGE_FLAG_NONE MojoReadMessageFlags = 0 | |
| 60 MOJO_READ_MESSAGE_FLAG_MAY_DISCARD MojoReadMessageFlags = 1 << 0 | |
| 61 | |
| 62 MOJO_READ_DATA_FLAG_NONE MojoReadDataFlags = 0 | |
| 63 MOJO_READ_DATA_FLAG_ALL_OR_NONE MojoReadDataFlags = 1 << 0 | |
| 64 MOJO_READ_DATA_FLAG_DISCARD MojoReadDataFlags = 1 << 1 | |
| 65 MOJO_READ_DATA_FLAG_QUERY MojoReadDataFlags = 1 << 2 | |
| 66 MOJO_READ_DATA_FLAG_PEEK MojoReadDataFlags = 1 << 3 | |
| 67 MOJO_WRITE_DATA_FLAG_NONE MojoWriteDataFlags = 0 | |
| 68 MOJO_WRITE_DATA_FLAG_ALL_OR_NONE MojoWriteDataFlags = 1 << 0 | |
| 69 | |
| 70 MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE MojoCreateDataPipeOptionsFlag
s = 0 | |
| 71 MOJO_CREATE_MESSAGE_PIPE_OPTIONS_FLAG_NONE MojoCreateMessagePipeOptionsF
lags = 0 | |
| 72 | |
| 73 MOJO_CREATE_SHARED_BUFFER_OPTIONS_FLAG_NONE MojoCreateSharedBufferOpt
ionsFlags = 0 | |
| 74 MOJO_DUPLICATE_BUFFER_HANDLE_OPTIONS_FLAG_NONE MojoDuplicateBufferHandle
OptionsFlags = 0 | |
| 75 MOJO_MAP_BUFFER_FLAG_NONE MojoMapBufferFlags
= 0 | |
| 76 MOJO_BUFFER_INFORMATION_FLAG_NONE MojoBufferInformationFlag
s = 0 | |
| 77 ) | |
| 78 | |
| 79 // IsReadable returns true iff the |MOJO_HANDLE_SIGNAL_READABLE| bit is set. | |
| 80 func (m MojoHandleSignals) IsReadable() bool { | |
| 81 return (m & MOJO_HANDLE_SIGNAL_READABLE) != 0 | |
| 82 } | |
| 83 | |
| 84 // IsWritable returns true iff the |MOJO_HANDLE_SIGNAL_WRITABLE| bit is set. | |
| 85 func (m MojoHandleSignals) IsWritable() bool { | |
| 86 return (m & MOJO_HANDLE_SIGNAL_WRITABLE) != 0 | |
| 87 } | |
| 88 | |
| 89 // IsClosed returns true iff the |MOJO_HANDLE_SIGNAL_PEER_CLOSED| bit is set. | |
| 90 func (m MojoHandleSignals) IsClosed() bool { | |
| 91 return (m & MOJO_HANDLE_SIGNAL_PEER_CLOSED) != 0 | |
| 92 } | |
| 93 | |
| 94 // MojoHandleSignalsState is a struct returned by wait functions to indicate | |
| 95 // the signaling state of handles. | |
| 96 type MojoHandleSignalsState struct { | |
| 97 // Signals that were satisfied at some time before the call returned. | |
| 98 SatisfiedSignals MojoHandleSignals | |
| 99 // Signals that are possible to satisfy. For example, if the return valu
e | |
| 100 // was |MOJO_RESULT_FAILED_PRECONDITION|, you can use this field to | |
| 101 // determine which, if any, of the signals can still be satisfied. | |
| 102 SatisfiableSignals MojoHandleSignals | |
| 103 } | |
| 104 | |
| 105 // DataPipeOptions is used to specify creation parameters for a data pipe. | |
| 106 type DataPipeOptions struct { | |
| 107 Flags MojoCreateDataPipeOptionsFlags | |
| 108 // The size of an element in bytes. All transactions and buffers will | |
| 109 // be an integral number of elements. | |
| 110 ElemSize uint32 | |
| 111 // The capacity of the data pipe in bytes. Must be a multiple of elemSiz
e. | |
| 112 Capacity uint32 | |
| 113 } | |
| 114 | |
| 115 // MessagePipeOptions is used to specify creation parameters for a message pipe. | |
| 116 type MessagePipeOptions struct { | |
| 117 Flags MojoCreateMessagePipeOptionsFlags | |
| 118 } | |
| 119 | |
| 120 // SharedBufferOptions is used to specify creation parameters for a | |
| 121 // shared buffer. | |
| 122 type SharedBufferOptions struct { | |
| 123 Flags MojoCreateSharedBufferOptionsFlags | |
| 124 } | |
| 125 | |
| 126 // DuplicateBufferHandleOptions is used to specify parameters in | |
| 127 // duplicating access to a shared buffer. | |
| 128 type DuplicateBufferHandleOptions struct { | |
| 129 Flags MojoDuplicateBufferHandleOptionsFlags | |
| 130 } | |
| 131 | |
| 132 // MojoBufferInformation is returned by the GetBufferInformation system | |
| 133 // call. | |
| 134 type MojoBufferInformation struct { | |
| 135 // Possible values: | |
| 136 // MOJO_BUFFER_INFORMATION_FLAG_NONE | |
| 137 Flags MojoBufferInformationFlags | |
| 138 | |
| 139 // The size of this shared buffer, in bytes. | |
| 140 NumBytes uint64 | |
| 141 } | |
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Chromium Code Reviews
Issue 2250183003:
Make the fuchsia mojo/public repo the source of truth. (Closed)
Base URL: https://github.com/domokit/mojo.git@master