CreateThreadpoolCleanupGroup function (threadpoolapiset.h)

Creates a cleanup group that applications can use to track one or more thread pool callbacks.

Syntax

PTP_CLEANUP_GROUP CreateThreadpoolCleanupGroup();

Return value

If the function succeeds, it returns a pointer to a TP_CLEANUP_GROUP structure of the newly allocated cleanup group. Applications do not modify the members of this structure.

If function fails, it returns NULL. To retrieve extended error information, call GetLastError.

Remarks

After creating the cleanup group, call SetThreadpoolCallbackCleanupGroup to associate the cleanup group with a callback environment.

A member is added to the group each time you call one of the following functions:

• CreateThreadpoolIo
• CreateThreadpoolTimer
• CreateThreadpoolWait
• CreateThreadpoolWork

You use one of the following corresponding close functions to remove a member from the group.

• CloseThreadpoolIo
• CloseThreadpoolTimer
• CloseThreadpoolWait
• CloseThreadpoolWork

To close all the callbacks, call CloseThreadpoolCleanupGroupMembers.

To compile an application that uses this function, define _WIN32_WINNT as 0x0600 or higher.

Examples

For an example, see Using the Thread Pool Functions.

Requirements

See also

CloseThreadpoolCleanupGroup

CloseThreadpoolCleanupGroupMembers

SetThreadpoolCallbackCleanupGroup

Thread Pools