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

The pollwakeup() function 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

The pollwakeup() function can be called from user, interrupt, or
kernel context.

SEE ALSO

poll(2), chpoll(9E)


Writing Device Drivers

NOTES

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

January 16, 2006 POLLWAKEUP(9F)