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Side by Side Diff: mojo/public/go/system/impl/core_impl.go

Issue 814543006: Move //mojo/{public, edk} underneath //third_party (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Rebase Created 5 years, 11 months ago
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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
3 // found in the LICENSE file.
4
5 package impl
6
7 //#include "mojo/public/platform/native/system_thunks.h"
8 //#include "mojo/public/c/system/main.h"
9 import "C"
10 import "unsafe"
11
12 var core *CoreImpl
13
14 func init() {
15 core = &CoreImpl{}
16 }
17
18 // CoreImpl is an implementation of the Mojo system APIs.
19 type CoreImpl struct {
20 }
21
22 func GetCore() *CoreImpl {
23 return core
24 }
25
26 func (c *CoreImpl) GetTimeTicksNow() MojoTimeTicks {
27 return (MojoTimeTicks)(C.MojoGetTimeTicksNow())
28 }
29
30 func (c *CoreImpl) Close(handle MojoHandle) MojoResult {
31 return (MojoResult)(C.MojoClose(handle.cType()))
32 }
33
34 func (c *CoreImpl) Wait(handle MojoHandle, signal MojoHandleSignals, deadline Mo joDeadline) (MojoResult, *MojoHandleSignalsState) {
35 var signal_states C.struct_MojoHandleSignalsState
36 result := C.MojoNewWait(handle.cType(), signal.cType(), deadline.cType() , &signal_states)
37 return MojoResult(result), &MojoHandleSignalsState{MojoHandleSignals(sig nal_states.satisfied_signals), MojoHandleSignals(signal_states.satisfiable_signa ls)}
38 }
39
40 func (c *CoreImpl) WaitMany(handles []MojoHandle, signals []MojoHandleSignals, d eadline MojoDeadline) (result MojoResult, index *uint32, state []MojoHandleSigna lsState) {
41 // Set "-1" using the instructions from http://blog.golang.org/constants
42 cindex := ^C.uint32_t(0)
43 cstate := make([]C.struct_MojoHandleSignalsState, len(handles))
44
45 result = (MojoResult)(C.MojoNewWaitMany(cArrayMojoHandle(handles), cArra yMojoHandleSignals(signals), (C.uint32_t)(len(handles)), deadline.cType(), &cind ex, &cstate[0]))
46
47 if uint32(cindex) < uint32(len(handles)) {
48 temp := uint32(cindex)
49 index = &temp
50 }
51
52 if result != MOJO_RESULT_INVALID_ARGUMENT && result != MOJO_RESULT_RESOU RCE_EXHAUSTED {
53 state = make([]MojoHandleSignalsState, len(cstate))
54 for i, value := range cstate {
55 state[i] = NewMojoHandleSignalsState(value)
56 }
57 }
58
59 return
60 }
61
62 func (c *CoreImpl) CreateMessagePipe(opts *MessagePipeOptions) (MojoResult, Mojo Handle, MojoHandle) {
63 var handle0, handle1 C.MojoHandle
64 result := C.MojoCreateMessagePipe(opts.cType(), &handle0, &handle1)
65 return (MojoResult)(result), (MojoHandle)(handle0), (MojoHandle)(handle1 )
66 }
67
68 func (c *CoreImpl) WriteMessage(handle MojoHandle, msg []byte, attached []MojoHa ndle, flags MojoWriteMessageFlags) MojoResult {
69 return (MojoResult)(C.MojoWriteMessage(handle.cType(), cArrayBytes(msg), (C.uint32_t)(len(msg)), cArrayMojoHandle(attached), (C.uint32_t)(len(attached)) , flags.cType()))
70 }
71
72 func (c *CoreImpl) ReadMessage(handle MojoHandle, flags MojoReadMessageFlags) (M ojoResult, []byte, []MojoHandle, uint32, uint32) {
73 var num_bytes, num_handles C.uint32_t
74 if result := C.MojoReadMessage(handle.cType(), nil, &num_bytes, nil, &nu m_handles, flags.cType()); result != C.MOJO_RESULT_RESOURCE_EXHAUSTED {
75 return (MojoResult)(result), nil, nil, 0, 0
76 }
77 msg := make([]byte, (uint32)(num_bytes))
78 attached := make([]MojoHandle, (uint32)(num_handles))
79 result := C.MojoReadMessage(handle.cType(), cArrayBytes(msg), &num_bytes , cArrayMojoHandle(attached), &num_handles, (C.MojoReadMessageFlags)(flags))
80 return (MojoResult)(result), msg, attached, (uint32)(num_bytes), (uint32 )(num_handles)
81 }
82
83 func (c *CoreImpl) CreateDataPipe(opts *DataPipeOptions) (MojoResult, MojoHandle , MojoHandle) {
84 var producer, consumer C.MojoHandle
85 result := C.MojoCreateDataPipe(opts.cType(), &producer, &consumer)
86 return (MojoResult)(result), (MojoHandle)(producer), (MojoHandle)(consum er)
87 }
88
89 func (c *CoreImpl) WriteData(producer MojoHandle, data []byte, flags MojoWriteDa taFlags) (MojoResult, uint32) {
90 num_bytes := (C.uint32_t)(len(data))
91 result := C.MojoWriteData(producer.cType(), cArrayBytes(data), &num_byte s, flags.cType())
92 return (MojoResult)(result), (uint32)(num_bytes)
93 }
94
95 func (c *CoreImpl) ReadData(consumer MojoHandle, flags MojoReadDataFlags) (MojoR esult, []byte) {
96 var num_bytes C.uint32_t
97 var result C.MojoResult
98 if result = C.MojoReadData(consumer.cType(), nil, &num_bytes, C.MOJO_REA D_DATA_FLAG_QUERY); result != C.MOJO_RESULT_OK {
99 return (MojoResult)(result), nil
100 }
101 data := make([]byte, (uint32)(num_bytes))
102 result = C.MojoReadData(consumer.cType(), cArrayBytes(data), &num_bytes, flags.cType())
103 return (MojoResult)(result), data
104 }
105
106 func (c *CoreImpl) CreateSharedBuffer(opts *SharedBufferOptions, numBytes uint64 ) (MojoResult, MojoHandle) {
107 var handle C.MojoHandle
108 result := C.MojoCreateSharedBuffer(opts.cType(), (C.uint64_t)(numBytes), &handle)
109 return (MojoResult)(result), (MojoHandle)(handle)
110 }
111
112 func (c *CoreImpl) DuplicateBufferHandle(handle MojoHandle, opts *DuplicateBuffe rHandleOptions) (MojoResult, MojoHandle) {
113 var duplicate C.MojoHandle
114 result := C.MojoDuplicateBufferHandle(handle.cType(), opts.cType(), &dup licate)
115 return (MojoResult)(result), (MojoHandle)(duplicate)
116 }
117
118 func (c *CoreImpl) MapBuffer(handle MojoHandle, offset uint64, numBytes uint64, flags MojoMapBufferFlags) (MojoResult, unsafe.Pointer) {
119 var bufPtr unsafe.Pointer
120 result := C.MojoMapBuffer(handle.cType(), (C.uint64_t)(offset), (C.uint6 4_t)(numBytes), &bufPtr, flags.cType())
121 if result != C.MOJO_RESULT_OK {
122 return (MojoResult)(result), nil
123 }
124 return MOJO_RESULT_OK, bufPtr
125 }
126
127 func (c *CoreImpl) UnmapBuffer(buffer unsafe.Pointer) MojoResult {
128 return (MojoResult)(C.MojoUnmapBuffer(buffer))
129 }
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