KernWakeup: Difference between revisions
Created page with "==Synopsis== APIRET APIENTRY KernWakeup(ULONG eventid, ULONG flags, PULONG tcnt, ULONG retdata); ==Description== This wakes up threads that are blocking in KernBlock. The eve..." |
mNo edit summary |
||
| Line 1: | Line 1: | ||
==Synopsis== | ==Synopsis== | ||
APIRET APIENTRY KernWakeup(ULONG eventid, ULONG flags, PULONG tcnt, ULONG retdata); | APIRET APIENTRY KernWakeup(ULONG eventid, ULONG flags, PULONG tcnt, ULONG retdata); | ||
==Description== | ==Description== | ||
| Line 6: | Line 6: | ||
==Parameters== | ==Parameters== | ||
;eventid:Event id of the blocked thread(s). | |||
eventid | ;flags:One or more of the following flag bits: | ||
::KEE_WAKE_SINGLE - Only wakeup the first matching thread; by default, if multiple threads are waiting, all will be awaking. | |||
flags | ::KEE_WAKE_PRIOINCR - Run the woke threads with higher priority. | ||
::KEE_WAKE_RETDATA - return data value specified to the KernBlock retdata variable. By default, nothing is returned. | |||
;tcnt:pointer to an ULONG to return the actual number of threads that were woke. Ignored when NULL. | |||
;retdata:Data to be returned to the unblocked threads. Ignored when KEE_WAKE_RETDATA is not set. | |||
tcnt | |||
retdata | |||
==Comments== | ==Comments== | ||
Revision as of 17:42, 20 October 2016
Synopsis
APIRET APIENTRY KernWakeup(ULONG eventid, ULONG flags, PULONG tcnt, ULONG retdata);
Description
This wakes up threads that are blocking in KernBlock. The eventid to be specified has to match the eventid used in KernBlock. It is possible to submit a 32 bit return value to the unblocked thread. The number of threads that are unblocked is returned. must match
Parameters
- eventid
- Event id of the blocked thread(s).
- flags
- One or more of the following flag bits:
- KEE_WAKE_SINGLE - Only wakeup the first matching thread; by default, if multiple threads are waiting, all will be awaking.
- KEE_WAKE_PRIOINCR - Run the woke threads with higher priority.
- KEE_WAKE_RETDATA - return data value specified to the KernBlock retdata variable. By default, nothing is returned.
- tcnt
- pointer to an ULONG to return the actual number of threads that were woke. Ignored when NULL.
- retdata
- Data to be returned to the unblocked threads. Ignored when KEE_WAKE_RETDATA is not set.
Comments
I don't know whether the priority increase issued by KEE_WAKE_PRIOINCR is permanent, or only for the current timeslice. It shouldn't be permanent.