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ISymUnmanagedAsyncMethodPropertiesWriter Interface

  • Bài viết

Allows you to define optional async method information for each method symbol. Always use with an opened method; that is, between calls to the OpenMethod Method and the CloseMethod Method.

Syntax

[object,uuid(FC073774-1739-4232-BD56-A027294BEC15),pointer_default(unique)]interface ISymUnmanagedAsyncMethodPropertiesWriter : IUnknown

Methods

This interface contains the following methods:

Method Description
DefineAsyncStepInfo Method Define a group of async await operations in the current method.

Each yield offset matches an await's return instruction, identifying a potential yield. Each breakpointMethod/breakpointOffset pair identifies where the asynchronous operation will resume; it may be in a different method.
DefineCatchHandlerILOffset Method Sets the IL offset for the compiler-generated catch handler that wraps an async method.

The IL offset of the generated catch is used by the debugger to handle the catch as if it were non-user code, even though it may occur in a user code method. In particular, it is used in response to a CatchHandlerFound exception event.
DefineKickoffMethod Method Sets the starting method that initiates the async operation.

Requirements

Header: CorSym.idl, CorSym.h

See also