Content-type: text/html Man page of esbbcall

esbbcall

Section: Kernel Functions for Drivers (9F)
Updated: 16 Jan 2006
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NAME

esbbcall - call function when buffer is available  

SYNOPSIS

#include <sys/stream.h> 

bufcall_id_t esbbcall(uint_t pri, void (*func)(void *arg), void (arg));  

INTERFACE LEVEL

Architecture independent level 1 (DDI/DKI).  

PARAMETERS

pri Priority of allocation request (to be used by allocb(9F) function, called by esbbcall()).

func Function to be called when buffer becomes available.

arg Argument to func.

 

DESCRIPTION

The esbbcall() function, like bufcall(9F), serves as a timeout(9F) call of indeterminate length. If esballoc(9F) is unable to allocate a message and data block header to go with its externally supplied data buffer, esbbcall() can be used to schedule the routine func, to be called with the argument arg when a buffer becomes available. The func argument can be a routine that calls esballoc(9F) or it may be another kernel function.  

RETURN VALUES

On success, a bufcall IDis returned. On failure, 0 is returned. The value returned from a successful call should be saved for possible future use with unbufcall() should it become necessary to cancel the esbbcall() request (as at driver close time).  

CONTEXT

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

SEE ALSO

allocb(9F), bufcall(9F), esballoc(9F), timeout(9F), datab(9S), unbufcall(9F)

Writing Device Drivers STREAMS Programming Guide


 

Index

NAME
SYNOPSIS
INTERFACE LEVEL
PARAMETERS
DESCRIPTION
RETURN VALUES
CONTEXT
SEE ALSO

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Time: 02:39:41 GMT, October 02, 2010