FunctionEnter Function
Notifies the profiler that control is being passed to a function.
.gif "Note") Note: |
|---|
The FunctionEnter function is deprecated in the .NET Framework version 2.0. It will continue to work, but will incur a performance penalty. Use the FunctionEnter2 function instead. |
void FunctionEnter (
[in] FunctionID funcID
);
Parameters
- funcID
[in] The identifier of the function to which control is passed.
Remarks
The FunctionEnter function is a callback; you must implement it. The implementation must use the __declspec(naked) storage-class attribute.
The execution engine does not save any registers before calling this function.
On entry, you must save all registers that you use, including those in the floating-point unit (FPU).
On exit, you must restore the stack by popping off all the parameters that were pushed by its caller.
The implementation of FunctionEnter should not block because it will delay garbage collection. The implementation should not attempt a garbage collection because the stack may not be in a garbage collection-friendly state. If a garbage collection is attempted, the runtime will block until FunctionEnter returns.
Also, the FunctionEnter function must not call into managed code or in any way cause a managed memory allocation.
Requirements
Platforms: Windows 2000, Windows XP, Windows Server 2003 family
Header: CorProf.idl
Library: CorGuids.lib
.NET Framework Version: 1.1, 1.0