The events described in this article collect information that is specific to methods. The payload of these events is required for symbol resolution. In addition, these events provide helpful information such as methods that are loaded and unloaded. For more information about how to use these events for diagnostic purposes, see logging and tracing .NET applications
All method events have a level of "Informational (4)". All method verbose events have a level of "Verbose (5)".
All method events are raised by the JITKeyword (0x10) keyword or the NGenKeyword (0x20) keyword under the runtime provider, or JitRundownKeyword (0x10) or NGENRundownKeyword (0x20) under the rundown provider.
The V2 versions of these events include the ReJITID, the V1 versions do not.
MethodLoad_V1 event
The following table shows the event information:
Event
Event ID
Description
MethodLoad_V1
141
Raised when a method is just-in-time loaded (JIT-loaded) or an NGEN image is loaded. Dynamic and generic methods do not use this version for method loads. JIT helpers never use this version.
Keyword for raising the event
Level
JITKeyword (0x10) runtime provider
Informational (4)
NGenKeyword (0x20) runtime provider
Informational (4)
Field name
Data type
Description
MethodID
win:UInt64
Unique identifier of a method. For JIT helper methods, this is set to the start address of the method.
ModuleID
win:UInt64
Identifier of the module to which this method belongs (0 for JIT helpers).
Raised when a method is just-in-time loaded (JIT-loaded) or an NGEN image is loaded. Dynamic and generic methods do not use this version for method loads. JIT helpers never use this version.
Keyword for raising the event
Level
JITKeyword (0x10) runtime provider
Informational (4)
NGenKeyword (0x20) runtime provider
Informational (4)
Field name
Data type
Description
MethodID
win:UInt64
Unique identifier of a method. For JIT helper methods, this is set to the start address of the method.
ModuleID
win:UInt64
Identifier of the module to which this method belongs (0 for JIT helpers).
Signature of the method (comma-separated list of type names).
EntryPoint
win:UInt64
The pointer to the entry point of the R2R method
ClrInstanceID
win:UInt16
Unique ID for the instance of CoreCLR.
R2RGetEntryPointStart event
Event
Event ID
Description
R2RGetEntryPointStart
160
Raised when an R2R entry point lookup starts.
Keyword for raising the event
Level
CompilationDiagnosticKeyword (0x2000000000)
Informational (4)
Field name
Data type
Description
MethodID
win:UInt64
Unique identifier of a R2R method.
ClrInstanceID
win:UInt16
Unique ID for the instance of CoreCLR.
MethodLoadVerbose_V1 event
Event
Event ID
Description
MethodLoadVerbose_V1
143
Raised when a method is JIT-loaded or an NGEN image is loaded. Dynamic and generic methods always use this version for method loads. JIT helpers always use this version.
Keyword for raising the event
Level
JITKeyword (0x10)
Informational (4)
NGenKeyword (0x20)
Informational (4)
Field name
Data type
Description
MethodID
win:UInt64
Unique identifier of the method. For JIT helper methods, set to the start address of the method.
ModuleID
win:UInt64
Identifier of the module to which this method belongs (0 for JIT helpers).
MethodStartAddress
win:UInt64
Start address.
MethodSize
win:UInt32
Method length.
MethodToken
win:UInt32
0 for dynamic methods and JIT helpers.
MethodFlags
win:UInt32
0x1: Dynamic method.
0x2: Generic method.
0x4: JIT-compiled method (otherwise, generated by NGen.exe)
0x8: Helper method.
MethodNameSpace
win:UnicodeString
Full namespace name associated with the method.
MethodName
win:UnicodeString
Full class name associated with the method.
MethodSignature
win:UnicodeString
Signature of the method (comma-separated list of type names).
ClrInstanceID
win:UInt16
Unique ID for the instance of CoreCLR.
MethodLoadVerbose_V2 event
Event
Event ID
Description
MethodLoadVerbose_V1
143
Raised when a method is JIT-loaded or an NGEN image is loaded. Dynamic and generic methods always use this version for method loads. JIT helpers always use this version.
Keyword for raising the event
Level
JITKeyword (0x10)
Informational (4)
NGenKeyword (0x20)
Informational (4)
Field name
Data type
Description
MethodID
win:UInt64
Unique identifier of the method. For JIT helper methods, set to the start address of the method.
ModuleID
win:UInt64
Identifier of the module to which this method belongs (0 for JIT helpers).
MethodStartAddress
win:UInt64
Start address.
MethodSize
win:UInt32
Method length.
MethodToken
win:UInt32
0 for dynamic methods and JIT helpers.
MethodFlags
win:UInt32
0x1: Dynamic method.
0x2: Generic method.
0x4: JIT-compiled method (otherwise, generated by NGen.exe)
0x8: Helper method.
MethodNameSpace
win:UnicodeString
Full namespace name associated with the method.
MethodName
win:UnicodeString
Full class name associated with the method.
MethodSignature
win:UnicodeString
Signature of the method (comma-separated list of type names).
ReJITID
win:UInt64
ReJIT ID of the method.
ClrInstanceID
win:UInt16
Unique ID for the instance of CoreCLR.
MethodUnLoadVerbose_V1 event
Event
Event ID
Description
MethodUnLoadVerbose_V1
144
Raised when a dynamic method is destroyed, a module is unloaded, or an application domain is destroyed. Dynamic methods always use this version for method unloads.
Keyword for raising the event
Level
JITKeyword (0x10)
Informational (4)
NGenKeyword (0x20)
Informational (4)
Field name
Data type
Description
MethodID
win:UInt64
Unique identifier of the method. For JIT helper methods, set to the start address of the method.
ModuleID
win:UInt64
Identifier of the module to which this method belongs (0 for JIT helpers).
MethodStartAddress
win:UInt64
Start address.
MethodSize
win:UInt32
Method length.
MethodToken
win:UInt32
0 for dynamic methods and JIT helpers.
MethodFlags
win:UInt32
0x1: Dynamic method.
0x2: Generic method.
0x4: JIT-compiled method (otherwise, generated by NGen.exe)
0x8: Helper method.
MethodNameSpace
win:UnicodeString
Full namespace name associated with the method.
MethodName
win:UnicodeString
Full class name associated with the method.
MethodSignature
win:UnicodeString
Signature of the method (comma-separated list of type names).
ClrInstanceID
win:UInt16
Unique ID for the instance of CoreCLR.
MethodUnLoadVerbose_V2 event
Event
Event ID
Description
MethodUnLoadVerbose_V2
144
Raised when a dynamic method is destroyed, a module is unloaded, or an application domain is destroyed. Dynamic methods always use this version for method unloads.
Keyword for raising the event
Level
JITKeyword (0x10)
Informational (4)
NGenKeyword (0x20)
Informational (4)
Field name
Data type
Description
MethodID
win:UInt64
Unique identifier of the method. For JIT helper methods, set to the start address of the method.
ModuleID
win:UInt64
Identifier of the module to which this method belongs (0 for JIT helpers).
MethodStartAddress
win:UInt64
Start address.
MethodSize
win:UInt32
Method length.
MethodToken
win:UInt32
0 for dynamic methods and JIT helpers.
MethodFlags
win:UInt32
0x1: Dynamic method.
0x2: Generic method.
0x4: JIT-compiled method (otherwise, generated by NGen.exe)
0x8: Helper method.
MethodNameSpace
win:UnicodeString
Full namespace name associated with the method.
MethodName
win:UnicodeString
Full class name associated with the method.
MethodSignature
win:UnicodeString
Signature of the method (comma-separated list of type names).
ClrInstanceID
win:UInt16
Unique ID for the instance of CoreCLR.
ReJITID
win:UInt64
ReJIT ID of the method.
MethodJittingStarted_V1 event
The following table shows the keyword and level:
Keyword for raising the event
Level
JITKeyword (0x10)
Verbose (5)
NGenKeyword (0x20)
Verbose (5)
Event
Event ID
Description
MethodJittingStarted_V1
145
Raised when a method is being JIT-compiled.
Field name
Data type
Description
MethodID
win:UInt64
Unique identifier of the method.
ModuleID
win:UInt64
Identifier of the module to which this method belongs.
MethodToken
win:UInt32
0 for dynamic methods and JIT helpers.
MethodILSize
win:UInt32
The size of the Common Intermediate Language (CIL) for the method that is being JIT-compiled.
MethodNameSpace
win:UnicodeString
Full class name associated with the method.
MethodName
win:UnicodeString
Name of the method.
MethodSignature
win:UnicodeString
Signature of the method (comma-separated list of type names).
ClrInstanceID
win:UInt16
Unique ID for the instance of CoreCLR.
MethodJitInliningSucceeded event
Keyword for raising the event
Level
JITTracingKeyword (0x1000)
Verbose (5)
Event
Event ID
Description
MethodJitInliningSucceeded
185
Raised when a method is successfully inlined by the JIT compiler.
Field name
Data type
Description
MethodBeingCompiledNamespace
win:UnicodeString
Namespace of the method being compiled.
MethodBeingCompiledName
win:UnicodeString
Name of the method being compiled.
MethodBeingCompiledNameSignature
win:UnicodeString
Signature of the method (comma-separated list of type names) being compiled.
InlinerNamespace
win:UnicodeString
The namespace of inliner ("parent") method.
InlinerName
win:UnicodeString
Name of the inliner ("parent") method.
InlinerNameSignature
win:UnicodeString
Signature of the inliner ("parent") method (comma-separated list of type names).
InlineeNamespace
win:UnicodeString
The namespace of inlinee ("child") method.
InlineeName
win:UnicodeString
Name of the inlinee ("child") method.
InlineeNameSignature
win:UnicodeString
Signature of the inlinee ("child") method (comma-separated list of type names).
ClrInstanceID
win:UInt16
Unique ID for the instance of CoreCLR.
MethodJitInliningFailed event
Keyword for raising the event
Level
JITTracingKeyword (0x1000)
Verbose (5)
Event
Event ID
Description
MethodJitInliningFailed
192
Raised when a method was failed to be inlined by the JIT compiler.
Field name
Data type
Description
MethodBeingCompiledNamespace
win:UnicodeString
Namespace of the method being compiled.
MethodBeingCompiledName
win:UnicodeString
Name of the method being compiled.
MethodBeingCompiledNameSignature
win:UnicodeString
Signature of the method (comma-separated list of type names) being compiled.
InlinerNamespace
win:UnicodeString
The namespace of inliner ("parent") method.
InlinerName
win:UnicodeString
Name of the inliner ("parent") method.
InlinerNameSignature
win:UnicodeString
Signature of the inliner ("parent") method (comma-separated list of type names).
InlineeNamespace
win:UnicodeString
The namespace of inlinee ("child") method.
InlineeName
win:UnicodeString
Name of the inlinee ("child") method.
InlineeNameSignature
win:UnicodeString
Signature of the inlinee ("child") method (comma-separated list of type names).
FailAlways
win:Boolean
Whether the method is marked as not inlinable.
FailReason
win:UnicodeString
Reason inlining failed.
ClrInstanceID
win:UInt16
Unique ID for the instance of CoreCLR.
MethodJitTailCallSucceeded event
Keyword for raising the event
Level
JITTracingKeyword (0x1000)
Verbose (5)
Event
Event ID
Description
MethodJitTailCallSucceeded
192
Raised by the JIT compiler when a method can be successfully tail called.
Field name
Data type
Description
MethodBeingCompiledNamespace
win:UnicodeString
Namespace of the method being compiled.
MethodBeingCompiledName
win:UnicodeString
Name of the method being compiled.
MethodBeingCompiledNameSignature
win:UnicodeString
Signature of the method (comma-separated list of type names) being compiled.
CallerNamespace
win:UnicodeString
Namespace of the caller method.
CallerName
win:UnicodeString
Name of the caller method.
CallerNameSignature
win:UnicodeString
Signature of the caller method (Comma-separated list of type names).
CalleeNamespace
win:UnicodeString
Namespace of the callee method.
CalleeName
win:UnicodeString
Name of the callee method.
CalleeNameSignature
win:UnicodeString
Signature of the callee method (Comma-separated list of type names).
TailPrefix
win:Boolean
Whether it is a tail prefix instruction.
TailCallType
win:UInt32
The type of tail call.
0: Optimized tail call (epilog + jmp)
1: Recursive tail call (method tail calls itself)
2: Helper assisted tail call
ClrInstanceID
win:UInt16
Unique ID for the instance of CoreCLR.
MethodJitTailCallFailed event
Keyword for raising the event
Level
JITTracingKeyword (0x1000)
Verbose (5)
Event
Event ID
Description
MethodJitTailCallFailed
191
Raised by the JIT compiler when a method was failed to be tail called.
Field name
Data type
Description
MethodBeingCompiledNamespace
win:UnicodeString
Namespace of the method being compiled.
MethodBeingCompiledName
win:UnicodeString
Name of the method being compiled.
MethodBeingCompiledNameSignature
win:UnicodeString
Signature of the method (comma-separated list of type names) being compiled.
CallerNamespace
win:UnicodeString
Namespace of the caller method.
CallerName
win:UnicodeString
Name of the caller method.
CallerNameSignature
win:UnicodeString
Signature of the caller method (Comma-separated list of type names).
CalleeNamespace
win:UnicodeString
Namespace of the callee method.
CalleeName
win:UnicodeString
Name of the callee method.
CalleeNameSignature
win:UnicodeString
Signature of the callee method (Comma-separated list of type names).
TailPrefix
win:Boolean
Whether it is a tail prefix instruction.
FailReason
win:UnicodeString
Reason tail call failed.
ClrInstanceID
win:UInt16
Unique ID for the instance of CoreCLR.
MethodILToNativeMap event
Keyword for raising the event
Level
JittedMethodILToNativeMapKeyword (0x20000)
Verbose (5)
Event
Event ID
Description
MethodILToNativeMap
190
Maps the IL-to-native map event for JIT-compiled methods.
Field name
Data type
Description
MethodID
win:UInt64
Unique identifier of a method.
ReJITID
win:UInt64
The ReJIT ID of the method.
MethodExtent
win:UInt8
The extent for the jitted method.
CountOfMapEntries
win:UInt16
Number of map entries
ILOffsets
win:UInt32
The IL offset.
NativeOffsets
win:UInt32
The native code offset.
ClrInstanceID
win:UInt16
Unique ID for the instance of CoreCLR.
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