CloseThreadpoolTimer function (threadpoolapiset.h)
Releases the specified timer object.
Syntax
void CloseThreadpoolTimer(
[in, out] PTP_TIMER pti
);
Parameters
[in, out] pti
A pointer to TP_TIMER structure that defines the timer object. The CreateThreadpoolTimer function returns this pointer.
Return value
None
Remarks
The timer object is freed immediately if there are no outstanding callbacks; otherwise, the timer object is freed asynchronously after the outstanding callback functions complete.
In some cases, callback functions might run after CloseThreadpoolTimer has been called. To prevent this behavior:
- Call the SetThreadpoolTimer function or SetThreadpoolTimerEx function with the pftDueTime parameter set to NULL and the msPeriod and msWindowLength parameters set to 0.
- Call the WaitForThreadpoolTimerCallbacks function with the fCancelPendingCallbacks parameter set to TRUE.
- Call CloseThreadpoolTimer.
If there is a cleanup group associated with the timer object, it is not necessary to call this function; calling the CloseThreadpoolCleanupGroupMembers function releases the work, wait, and timer objects associated with the cleanup group.
To compile an application that uses this function, define _WIN32_WINNT as 0x0600 or higher.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps | UWP apps] |
| Minimum supported server | Windows Server 2008 [desktop apps | UWP apps] |
| Target Platform | Windows |
| Header | threadpoolapiset.h (include Windows.h on Windows 7, Windows Server 2008 Windows Server 2008 R2) |
| Library | Kernel32.lib |
| DLL | Kernel32.dll |