Reference Guide

ZCOM C I/F Library Routines

ZQSZE (3X)

Chapter 4 293

PAR AMETER S

ZCOM address

zqhdp (Return param)

ZCOM queue header data structure. This structure has the

following definition:

typedef struct {

uint32 qnmsg; /* Number of msgs on queue */

uint32 qlimit; /* Max # of msgs allowed on queue */

zbhd_type *qhead; /* Pointer to 1st msg on queue */

zbhd_type *qtail; /* Pointer to last msg on queue */

uint32 qmmax; /* Historical max # of msgs on queue */

uint32 qtmsg; /* Total # of msgs through queue */

uint32 qbytes; /* Number of bytes on queue */

uint16 qwaiter; /* Number of waiters on this queue */

uint16 qflag; /* Queue flags */

uint32 qfdata; /* Queue function data */

uint32 spare1; /* Reserved, not used */

void (*qfunc)(); /* Queue function to call */

} zqhd_type;

Note that in 32-bit mode, 32-bit padding fields are inserted before

the pointer fields. These are to maintain the same layout in both

32/64-bit modes. Such padding fields are not shown here and also

should not be referenced directly.