NAME

RD, rd - get pointer to the read queue

SYNOPSIS

#include <sys/stream.h>

#include <sys/ddi.h>

queue_t * RD(queue_t* q);

INTERFACE LEVEL

Architecture independent level 1 (DDI/DKI).

ARGUMENTS

q

Pointer to the write queue whose read queue is to be returned.

DESCRIPTION

The RD( ) function accepts a write queue pointer as an argument and returns a pointer to the read queue of the same module.

CAUTION: Make sure the argument to this function is a pointer to a write queue. RD( ) will not check for queue type, and a system panic could result if it is not the right type.

RETURN VALUES

The pointer to the read queue.

CONTEXT

RD( ) can be called from user or interrupt context.

EXAMPLES

See the qreply (9F)function page for an example of RD( ).

SEE ALSO

qreply (9F),WR(9F)

Writing Device Drivers

STREAMS Programming Guide