minix man page for pollwakeup

pollwakeup(9F)						   Kernel Functions for Drivers 					    pollwakeup(9F)

NAME
       pollwakeup - inform a process that an event has occurred

SYNOPSIS
       #include <sys/poll.h>

       void pollwakeup(struct pollhead *php, short event);

INTERFACE LEVEL
       Architecture independent level 1 (DDI/DKI).

PARAMETERS
       php	Pointer to a  pollhead structure.

       event	Event to notify the process about.

DESCRIPTION
       pollwakeup()  wakes  a  process	waiting on the occurrence of an event.	It should be called from a driver for each occurrence of an event.
       The  pollhead structure will usually be associated with the driver's private data structure associated with  the  particular  minor  device
       where the event has occurred. See  chpoll(9E) and poll(2) for more detail.

CONTEXT
       pollwakeup() can be called from user or interrupt context.

SEE ALSO
       poll(2), chpoll(9E)

       Writing Device Drivers

NOTES
       Driver defined locks should not be held across calls to this function.

SunOS 5.10							    11 Apr 1991 						    pollwakeup(9F)