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Merge pull request #110 from Microsoft/jjh/lineendings
Convert to Uix line endings
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,15 +1,15 @@ | ||
| // Package etw provides support for TraceLogging-based ETW (Event Tracing | ||
| // for Windows). TraceLogging is a format of ETW events that are self-describing | ||
| // (the event contains information on its own schema). This allows them to be | ||
| // decoded without needing a separate manifest with event information. The | ||
| // implementation here is based on the information found in | ||
| // TraceLoggingProvider.h in the Windows SDK, which implements TraceLogging as a | ||
| // set of C macros. | ||
| package etw | ||
|
|
||
| //go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -output zsyscall_windows.go etw.go | ||
|
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| //sys eventRegister(providerId *windows.GUID, callback uintptr, callbackContext uintptr, providerHandle *providerHandle) (win32err error) = advapi32.EventRegister | ||
| //sys eventUnregister(providerHandle providerHandle) (win32err error) = advapi32.EventUnregister | ||
| //sys eventWriteTransfer(providerHandle providerHandle, descriptor *EventDescriptor, activityID *windows.GUID, relatedActivityID *windows.GUID, dataDescriptorCount uint32, dataDescriptors *eventDataDescriptor) (win32err error) = advapi32.EventWriteTransfer | ||
| //sys eventSetInformation(providerHandle providerHandle, class eventInfoClass, information uintptr, length uint32) (win32err error) = advapi32.EventSetInformation | ||
| // Package etw provides support for TraceLogging-based ETW (Event Tracing | ||
| // for Windows). TraceLogging is a format of ETW events that are self-describing | ||
| // (the event contains information on its own schema). This allows them to be | ||
| // decoded without needing a separate manifest with event information. The | ||
| // implementation here is based on the information found in | ||
| // TraceLoggingProvider.h in the Windows SDK, which implements TraceLogging as a | ||
| // set of C macros. | ||
| package etw | ||
|
|
||
| //go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -output zsyscall_windows.go etw.go | ||
|
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| //sys eventRegister(providerId *windows.GUID, callback uintptr, callbackContext uintptr, providerHandle *providerHandle) (win32err error) = advapi32.EventRegister | ||
| //sys eventUnregister(providerHandle providerHandle) (win32err error) = advapi32.EventUnregister | ||
| //sys eventWriteTransfer(providerHandle providerHandle, descriptor *EventDescriptor, activityID *windows.GUID, relatedActivityID *windows.GUID, dataDescriptorCount uint32, dataDescriptors *eventDataDescriptor) (win32err error) = advapi32.EventWriteTransfer | ||
| //sys eventSetInformation(providerHandle providerHandle, class eventInfoClass, information uintptr, length uint32) (win32err error) = advapi32.EventSetInformation |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,65 +1,65 @@ | ||
| package etw | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/binary" | ||
| ) | ||
|
|
||
| // EventData maintains a buffer which builds up the data for an ETW event. It | ||
| // needs to be paired with EventMetadata which describes the event. | ||
| type EventData struct { | ||
| buffer bytes.Buffer | ||
| } | ||
|
|
||
| // Bytes returns the raw binary data containing the event data. The returned | ||
| // value is not copied from the internal buffer, so it can be mutated by the | ||
| // EventData object after it is returned. | ||
| func (ed *EventData) Bytes() []byte { | ||
| return ed.buffer.Bytes() | ||
| } | ||
|
|
||
| // WriteString appends a string, including the null terminator, to the buffer. | ||
| func (ed *EventData) WriteString(data string) { | ||
| ed.buffer.WriteString(data) | ||
| ed.buffer.WriteByte(0) | ||
| } | ||
|
|
||
| // WriteInt8 appends a int8 to the buffer. | ||
| func (ed *EventData) WriteInt8(value int8) { | ||
| ed.buffer.WriteByte(uint8(value)) | ||
| } | ||
|
|
||
| // WriteInt16 appends a int16 to the buffer. | ||
| func (ed *EventData) WriteInt16(value int16) { | ||
| binary.Write(&ed.buffer, binary.LittleEndian, value) | ||
| } | ||
|
|
||
| // WriteInt32 appends a int32 to the buffer. | ||
| func (ed *EventData) WriteInt32(value int32) { | ||
| binary.Write(&ed.buffer, binary.LittleEndian, value) | ||
| } | ||
|
|
||
| // WriteInt64 appends a int64 to the buffer. | ||
| func (ed *EventData) WriteInt64(value int64) { | ||
| binary.Write(&ed.buffer, binary.LittleEndian, value) | ||
| } | ||
|
|
||
| // WriteUint8 appends a uint8 to the buffer. | ||
| func (ed *EventData) WriteUint8(value uint8) { | ||
| ed.buffer.WriteByte(value) | ||
| } | ||
|
|
||
| // WriteUint16 appends a uint16 to the buffer. | ||
| func (ed *EventData) WriteUint16(value uint16) { | ||
| binary.Write(&ed.buffer, binary.LittleEndian, value) | ||
| } | ||
|
|
||
| // WriteUint32 appends a uint32 to the buffer. | ||
| func (ed *EventData) WriteUint32(value uint32) { | ||
| binary.Write(&ed.buffer, binary.LittleEndian, value) | ||
| } | ||
|
|
||
| // WriteUint64 appends a uint64 to the buffer. | ||
| func (ed *EventData) WriteUint64(value uint64) { | ||
| binary.Write(&ed.buffer, binary.LittleEndian, value) | ||
| } | ||
| package etw | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/binary" | ||
| ) | ||
|
|
||
| // EventData maintains a buffer which builds up the data for an ETW event. It | ||
| // needs to be paired with EventMetadata which describes the event. | ||
| type EventData struct { | ||
| buffer bytes.Buffer | ||
| } | ||
|
|
||
| // Bytes returns the raw binary data containing the event data. The returned | ||
| // value is not copied from the internal buffer, so it can be mutated by the | ||
| // EventData object after it is returned. | ||
| func (ed *EventData) Bytes() []byte { | ||
| return ed.buffer.Bytes() | ||
| } | ||
|
|
||
| // WriteString appends a string, including the null terminator, to the buffer. | ||
| func (ed *EventData) WriteString(data string) { | ||
| ed.buffer.WriteString(data) | ||
| ed.buffer.WriteByte(0) | ||
| } | ||
|
|
||
| // WriteInt8 appends a int8 to the buffer. | ||
| func (ed *EventData) WriteInt8(value int8) { | ||
| ed.buffer.WriteByte(uint8(value)) | ||
| } | ||
|
|
||
| // WriteInt16 appends a int16 to the buffer. | ||
| func (ed *EventData) WriteInt16(value int16) { | ||
| binary.Write(&ed.buffer, binary.LittleEndian, value) | ||
| } | ||
|
|
||
| // WriteInt32 appends a int32 to the buffer. | ||
| func (ed *EventData) WriteInt32(value int32) { | ||
| binary.Write(&ed.buffer, binary.LittleEndian, value) | ||
| } | ||
|
|
||
| // WriteInt64 appends a int64 to the buffer. | ||
| func (ed *EventData) WriteInt64(value int64) { | ||
| binary.Write(&ed.buffer, binary.LittleEndian, value) | ||
| } | ||
|
|
||
| // WriteUint8 appends a uint8 to the buffer. | ||
| func (ed *EventData) WriteUint8(value uint8) { | ||
| ed.buffer.WriteByte(value) | ||
| } | ||
|
|
||
| // WriteUint16 appends a uint16 to the buffer. | ||
| func (ed *EventData) WriteUint16(value uint16) { | ||
| binary.Write(&ed.buffer, binary.LittleEndian, value) | ||
| } | ||
|
|
||
| // WriteUint32 appends a uint32 to the buffer. | ||
| func (ed *EventData) WriteUint32(value uint32) { | ||
| binary.Write(&ed.buffer, binary.LittleEndian, value) | ||
| } | ||
|
|
||
| // WriteUint64 appends a uint64 to the buffer. | ||
| func (ed *EventData) WriteUint64(value uint64) { | ||
| binary.Write(&ed.buffer, binary.LittleEndian, value) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,29 +1,29 @@ | ||
| package etw | ||
|
|
||
| import ( | ||
| "unsafe" | ||
| ) | ||
|
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| type eventDataDescriptorType uint8 | ||
|
|
||
| const ( | ||
| eventDataDescriptorTypeUserData eventDataDescriptorType = iota | ||
| eventDataDescriptorTypeEventMetadata | ||
| eventDataDescriptorTypeProviderMetadata | ||
| ) | ||
|
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||
| type eventDataDescriptor struct { | ||
| ptr ptr64 | ||
| size uint32 | ||
| dataType eventDataDescriptorType | ||
| reserved1 uint8 | ||
| reserved2 uint16 | ||
| } | ||
|
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| func newEventDataDescriptor(dataType eventDataDescriptorType, buffer []byte) eventDataDescriptor { | ||
| return eventDataDescriptor{ | ||
| ptr: ptr64{ptr: unsafe.Pointer(&buffer[0])}, | ||
| size: uint32(len(buffer)), | ||
| dataType: dataType, | ||
| } | ||
| } | ||
| package etw | ||
|
|
||
| import ( | ||
| "unsafe" | ||
| ) | ||
|
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| type eventDataDescriptorType uint8 | ||
|
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||
| const ( | ||
| eventDataDescriptorTypeUserData eventDataDescriptorType = iota | ||
| eventDataDescriptorTypeEventMetadata | ||
| eventDataDescriptorTypeProviderMetadata | ||
| ) | ||
|
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||
| type eventDataDescriptor struct { | ||
| ptr ptr64 | ||
| size uint32 | ||
| dataType eventDataDescriptorType | ||
| reserved1 uint8 | ||
| reserved2 uint16 | ||
| } | ||
|
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||
| func newEventDataDescriptor(dataType eventDataDescriptorType, buffer []byte) eventDataDescriptor { | ||
| return eventDataDescriptor{ | ||
| ptr: ptr64{ptr: unsafe.Pointer(&buffer[0])}, | ||
| size: uint32(len(buffer)), | ||
| dataType: dataType, | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,67 +1,67 @@ | ||
| package etw | ||
|
|
||
| // Channel represents the ETW logging channel that is used. It can be used by | ||
| // event consumers to give an event special treatment. | ||
| type Channel uint8 | ||
|
|
||
| const ( | ||
| // ChannelTraceLogging is the default channel for TraceLogging events. It is | ||
| // not required to be used for TraceLogging, but will prevent decoding | ||
| // issues for these events on older operating systems. | ||
| ChannelTraceLogging Channel = 11 | ||
| ) | ||
|
|
||
| // Level represents the ETW logging level. There are several predefined levels | ||
| // that are commonly used, but technically anything from 0-255 is allowed. | ||
| // Lower levels indicate more important events, and 0 indicates an event that | ||
| // will always be collected. | ||
| type Level uint8 | ||
|
|
||
| // Predefined ETW log levels. | ||
| const ( | ||
| LevelAlways Level = iota | ||
| LevelCritical | ||
| LevelError | ||
| LevelWarning | ||
| LevelInfo | ||
| LevelVerbose | ||
| ) | ||
|
|
||
| // EventDescriptor represents various metadata for an ETW event. | ||
| type EventDescriptor struct { | ||
| id uint16 | ||
| version uint8 | ||
| Channel Channel | ||
| Level Level | ||
| Opcode uint8 | ||
| Task uint16 | ||
| Keyword uint64 | ||
| } | ||
|
|
||
| // NewEventDescriptor returns an EventDescriptor initialized for use with | ||
| // TraceLogging. | ||
| func NewEventDescriptor() *EventDescriptor { | ||
| // Standard TraceLogging events default to the TraceLogging channel, and | ||
| // verbose level. | ||
| return &EventDescriptor{ | ||
| Channel: ChannelTraceLogging, | ||
| Level: LevelVerbose, | ||
| } | ||
| } | ||
|
|
||
| // Identity returns the identity of the event. If the identity is not 0, it | ||
| // should uniquely identify the other event metadata (contained in | ||
| // EventDescriptor, and field metadata). Only the lower 24 bits of this value | ||
| // are relevant. | ||
| func (ed *EventDescriptor) Identity() uint32 { | ||
| return (uint32(ed.version) << 16) | uint32(ed.id) | ||
| } | ||
|
|
||
| // SetIdentity sets the identity of the event. If the identity is not 0, it | ||
| // should uniquely identify the other event metadata (contained in | ||
| // EventDescriptor, and field metadata). Only the lower 24 bits of this value | ||
| // are relevant. | ||
| func (ed *EventDescriptor) SetIdentity(identity uint32) { | ||
| ed.id = uint16(identity) | ||
| ed.version = uint8(identity >> 16) | ||
| } | ||
| package etw | ||
|
|
||
| // Channel represents the ETW logging channel that is used. It can be used by | ||
| // event consumers to give an event special treatment. | ||
| type Channel uint8 | ||
|
|
||
| const ( | ||
| // ChannelTraceLogging is the default channel for TraceLogging events. It is | ||
| // not required to be used for TraceLogging, but will prevent decoding | ||
| // issues for these events on older operating systems. | ||
| ChannelTraceLogging Channel = 11 | ||
| ) | ||
|
|
||
| // Level represents the ETW logging level. There are several predefined levels | ||
| // that are commonly used, but technically anything from 0-255 is allowed. | ||
| // Lower levels indicate more important events, and 0 indicates an event that | ||
| // will always be collected. | ||
| type Level uint8 | ||
|
|
||
| // Predefined ETW log levels. | ||
| const ( | ||
| LevelAlways Level = iota | ||
| LevelCritical | ||
| LevelError | ||
| LevelWarning | ||
| LevelInfo | ||
| LevelVerbose | ||
| ) | ||
|
|
||
| // EventDescriptor represents various metadata for an ETW event. | ||
| type EventDescriptor struct { | ||
| id uint16 | ||
| version uint8 | ||
| Channel Channel | ||
| Level Level | ||
| Opcode uint8 | ||
| Task uint16 | ||
| Keyword uint64 | ||
| } | ||
|
|
||
| // NewEventDescriptor returns an EventDescriptor initialized for use with | ||
| // TraceLogging. | ||
| func NewEventDescriptor() *EventDescriptor { | ||
| // Standard TraceLogging events default to the TraceLogging channel, and | ||
| // verbose level. | ||
| return &EventDescriptor{ | ||
| Channel: ChannelTraceLogging, | ||
| Level: LevelVerbose, | ||
| } | ||
| } | ||
|
|
||
| // Identity returns the identity of the event. If the identity is not 0, it | ||
| // should uniquely identify the other event metadata (contained in | ||
| // EventDescriptor, and field metadata). Only the lower 24 bits of this value | ||
| // are relevant. | ||
| func (ed *EventDescriptor) Identity() uint32 { | ||
| return (uint32(ed.version) << 16) | uint32(ed.id) | ||
| } | ||
|
|
||
| // SetIdentity sets the identity of the event. If the identity is not 0, it | ||
| // should uniquely identify the other event metadata (contained in | ||
| // EventDescriptor, and field metadata). Only the lower 24 bits of this value | ||
| // are relevant. | ||
| func (ed *EventDescriptor) SetIdentity(identity uint32) { | ||
| ed.id = uint16(identity) | ||
| ed.version = uint8(identity >> 16) | ||
| } |
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