PFLS_CALLBACK_FUNCTION callback function (winnt.h)

An application-defined function. If the FLS slot is in use, FlsCallback is called on fiber deletion, thread exit, and when an FLS index is freed. Specify this function when calling the FlsAlloc function. The PFLS_CALLBACK_FUNCTION type defines a pointer to this callback function. FlsCallback is a placeholder for the application-defined function name.

Syntax

PFLS_CALLBACK_FUNCTION PflsCallbackFunction;

void PflsCallbackFunction(
  [in] PVOID lpFlsData
)
{...}

Parameters

[in] lpFlsData

The value stored in the FLS slot for the calling fiber.

Return value

None

Remarks

Each FLS index has an associated FlsCallback function. The callback function can be used for any purpose, but it is intended to be used primarily to free memory.

Requirements

See also

Fibers

FlsAlloc

Process and Thread Functions