private NameInfo UpdateDescriptor(
string name,
TraceLoggingEventTypes eventInfo,
ref EventSourceOptions options,
out EventDescriptor descriptor)
{
NameInfo nameInfo = null;
int identity = 0;
byte level = (options.valuesSet & EventSourceOptions.levelSet) != 0
? options.level
: eventInfo.level;
byte opcode = (options.valuesSet & EventSourceOptions.opcodeSet) != 0
? options.opcode
: eventInfo.opcode;
EventTags tags = (options.valuesSet & EventSourceOptions.tagsSet) != 0
? options.tags
: eventInfo.Tags;
EventKeywords keywords = (options.valuesSet & EventSourceOptions.keywordsSet) != 0
? options.keywords
: eventInfo.keywords;
if (this.IsEnabled((EventLevel)level, keywords))
{
nameInfo = eventInfo.GetNameInfo(name ?? eventInfo.Name, tags);
identity = nameInfo.identity;
}
descriptor = new EventDescriptor(identity, level, opcode, (long)keywords);
return(nameInfo);
}
/// <summary>
/// Writes an extended event, where the values of the event are the
/// combined properties of any number of values. This method is
/// intended for use in advanced logging scenarios that support a
/// dynamic set of event context providers.
/// Attention: This API does not check whether the event is enabled or not.
/// Please use WriteMultiMerge to avoid spending CPU cycles for events that are
/// not enabled.
/// </summary>
/// <param name="eventName">
/// The name for the event. If null, the name from eventTypes is used.
/// (Note that providing the event name via the name parameter is slightly
/// less efficient than using the name from eventTypes.)
/// </param>
/// <param name="options">
/// Optional overrides for the event, such as the level, keyword, opcode,
/// activityId, and relatedActivityId. Any settings not specified by options
/// are obtained from eventTypes.
/// </param>
/// <param name="eventTypes">
/// Information about the event and the types of the values in the event.
/// Must not be null. Note that the eventTypes object should be created once and
/// saved. It should not be recreated for each event.
/// </param>
/// <param name="activityID">
/// A pointer to the activity ID GUID to log
/// </param>
/// <param name="childActivityID">
/// A pointer to the child activity ID to log (can be null)
/// </param>
/// <param name="values">
/// The values to include in the event. Must not be null. The number and types of
/// the values must match the number and types of the fields described by the
/// eventTypes parameter.
/// </param>
private unsafe void WriteMultiMergeInner(
string eventName,
ref EventSourceOptions options,
TraceLoggingEventTypes eventTypes,
Guid *activityID,
Guid *childActivityID,
params object[] values)
{
#if FEATURE_MANAGED_ETW
int identity = 0;
byte level = (options.valuesSet & EventSourceOptions.levelSet) != 0
? options.level
: eventTypes.level;
byte opcode = (options.valuesSet & EventSourceOptions.opcodeSet) != 0
? options.opcode
: eventTypes.opcode;
EventTags tags = (options.valuesSet & EventSourceOptions.tagsSet) != 0
? options.tags
: eventTypes.Tags;
EventKeywords keywords = (options.valuesSet & EventSourceOptions.keywordsSet) != 0
? options.keywords
: eventTypes.keywords;
var nameInfo = eventTypes.GetNameInfo(eventName ?? eventTypes.Name, tags);
if (nameInfo == null)
{
return;
}
identity = nameInfo.identity;
EventDescriptor descriptor = new EventDescriptor(identity, level, opcode, (long)keywords);
#if FEATURE_PERFTRACING
IntPtr eventHandle = nameInfo.GetOrCreateEventHandle(m_eventPipeProvider, m_eventHandleMap, descriptor, eventTypes);
Debug.Assert(eventHandle != IntPtr.Zero);
#else
IntPtr eventHandle = IntPtr.Zero;
#endif
var pinCount = eventTypes.pinCount;
var scratch = stackalloc byte[eventTypes.scratchSize];
var descriptors = stackalloc EventData[eventTypes.dataCount + 3];
for (int i = 0; i < eventTypes.dataCount + 3; i++)
{
descriptors[i] = default;
}
var pins = stackalloc GCHandle[pinCount];
for (int i = 0; i < pinCount; i++)
pins[i] = default;
fixed(byte *
pMetadata0 = this.providerMetadata,
pMetadata1 = nameInfo.nameMetadata,
pMetadata2 = eventTypes.typeMetadata)
{
descriptors[0].SetMetadata(pMetadata0, this.providerMetadata.Length, 2);
descriptors[1].SetMetadata(pMetadata1, nameInfo.nameMetadata.Length, 1);
descriptors[2].SetMetadata(pMetadata2, eventTypes.typeMetadata.Length, 1);
#if (!ES_BUILD_PCL && !ES_BUILD_PN)
System.Runtime.CompilerServices.RuntimeHelpers.PrepareConstrainedRegions();
#endif
try
{
DataCollector.ThreadInstance.Enable(
scratch,
eventTypes.scratchSize,
descriptors + 3,
eventTypes.dataCount,
pins,
pinCount);
for (int i = 0; i < eventTypes.typeInfos.Length; i++)
{
var info = eventTypes.typeInfos[i];
info.WriteData(TraceLoggingDataCollector.Instance, info.PropertyValueFactory(values[i]));
}
this.WriteEventRaw(
eventName,
ref descriptor,
eventHandle,
activityID,
childActivityID,
(int)(DataCollector.ThreadInstance.Finish() - descriptors),
(IntPtr)descriptors);
}
finally
{
this.WriteCleanup(pins, pinCount);
}
}
#endif // FEATURE_MANAGED_ETW
}
private unsafe void WriteMultiMergeInner(
string eventName,
ref EventSourceOptions options,
TraceLoggingEventTypes eventTypes,
Guid *activityID,
Guid *childActivityID,
params object[] values)
{
int identity = 0;
byte level = (options.valuesSet & EventSourceOptions.levelSet) != 0
? options.level
: eventTypes.level;
byte opcode = (options.valuesSet & EventSourceOptions.opcodeSet) != 0
? options.opcode
: eventTypes.opcode;
EventTags tags = (options.valuesSet & EventSourceOptions.tagsSet) != 0
? options.tags
: eventTypes.Tags;
EventKeywords keywords = (options.valuesSet & EventSourceOptions.keywordsSet) != 0
? options.keywords
: eventTypes.keywords;
var nameInfo = eventTypes.GetNameInfo(eventName ?? eventTypes.Name, tags);
if (nameInfo == null)
{
return;
}
identity = nameInfo.identity;
EventDescriptor descriptor = new EventDescriptor(identity, level, opcode, (long)keywords);
var pinCount = eventTypes.pinCount;
var scratch = stackalloc byte[eventTypes.scratchSize];
var descriptors = stackalloc EventData[eventTypes.dataCount + 3];
var pins = stackalloc GCHandle[pinCount];
fixed(byte *
pMetadata0 = this.providerMetadata,
pMetadata1 = nameInfo.nameMetadata,
pMetadata2 = eventTypes.typeMetadata)
{
descriptors[0].SetMetadata(pMetadata0, this.providerMetadata.Length, 2);
descriptors[1].SetMetadata(pMetadata1, nameInfo.nameMetadata.Length, 1);
descriptors[2].SetMetadata(pMetadata2, eventTypes.typeMetadata.Length, 1);
#if !ES_BUILD_PCL
System.Runtime.CompilerServices.RuntimeHelpers.PrepareConstrainedRegions();
#endif
try
{
DataCollector.ThreadInstance.Enable(
scratch,
eventTypes.scratchSize,
descriptors + 3,
eventTypes.dataCount,
pins,
pinCount);
for (int i = 0; i < eventTypes.typeInfos.Length; i++)
{
eventTypes.typeInfos[i].WriteObjectData(TraceLoggingDataCollector.Instance, values[i]);
}
this.WriteEventRaw(
eventName,
ref descriptor,
activityID,
childActivityID,
(int)(DataCollector.ThreadInstance.Finish() - descriptors),
(IntPtr)descriptors);
}
finally
{
this.WriteCleanup(pins, pinCount);
}
}
}