ZCOM C I/F Library Routines
ZSETQL (3X)
2.Under the current implementation, the terminal unacknowledged queue uses a “byte limit”, i.e. the limit for this queue indicates the maximum number of bytes allowed on the queue. The other queues use a “message limit”, which means the maximum number of messages allowed on the queue. However, the limit type may be changed by setting the ZCOM_QLIM_MFLAG or ZCOM_QLIM_BFLAG bit in the mode parameter.
3.The system initializes the express transmit queue (mode 2, qnum 3) with the maximum limit (0x7FFFFFFF). A low limit may affect critical data getting to the interface card and result in terminal control problems. Therefore, it is strongly recommended that the limit not be changed unless it is absolutely necessary. With some protocol options (e.g. X.25), changing this limit is unsupported!
EXAMPLE#include <zcom/zcomsys.h> #include <zcom/zcomcall.h>
int32 ierr; zaddr_type zaddr;
uint32 mode;
uint32 qnum;
uint32 limit;
if (ierr = zsetql (&zaddr, mode, qnum, limit)) { /* error return code */
}
else {
/* good return code */
}
FILES
/opt/acc/include/zcom/zcomsys.h | ZCOM subsystem general include file, |
| containing data types, data structures, |
| constants, error codes, masks, etc. Note |
| that this must be the first include file |
| before any other ZCOM include files. |
/opt/acc/include/zcom/zcomcall.h | ZCOM routine function prototypes |
| (requires ANSI C compilation). |
290 | Chapter 4 |