HP UX 11i v1 I/O Cards manual Ltqdput

ZCOM C I/F Library Routines

LTQDPUT (3X)

LTQDPUT (3X)

NAME

ltqdput – Store data buffer in terminal data queue

SYNOPSIS

#include <zcom/zcomsys.h>

#include <zcom/zcomcall.h> /* if compiled with ANSI C (recommended) */

int32 ltqdput (zap, queue, ibuf, len)

zaddr_type *zap;

uint32 queue;

char *ibuf;

int32 len;

DESCRIPTION

Routine ltqdput stores a data message in the data queue of the logical terminal tables. It links the message to the end of the specified queue. Retrieval occurs on a First-In-First-Out basis. See the man page for ltqdget on how to retrieve a message in the data queue.

The data queue is designed to store a relatively large or unpredictable amount of terminal data in FIFO order. When compared to logical data storage (refer to zltstore and zltup), the data queues allow terminal data to be stored dynamically, that is, memory is used only when data is stored. However, it is penalized by incurring more processing overhead during data update and retrieval. In addition, access is restricted to a FIFO order.

The libraries libzcom_c.a and libpthread.a must be linked into the calling program by giving the options “-lzx25 -lzcom_c -lpthread” to cc(1) or ld(1).

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