src/hd/rhdisp.h

/* Copyright (c) 1997 Silicon Graphics, Inc. */

/* SCCSid "$SunId$ SGI" */

/*
 * Header for holodeck display drivers.
 */

                                /* display requests */
#define DR_NOOP         0               /* to release from vain DR_ATTEN */
#define DR_BUNDLE       1               /* lone bundle request */
#define DR_ATTEN        2               /* request for attention */
#define DR_SHUTDOWN     3               /* shutdown request */
#define DR_NEWSET       4               /* new bundle set */
#define DR_ADDSET       5               /* add to current set */
#define DR_ADJSET       6               /* adjust set quantities */
#define DR_DELSET       7               /* delete from current set */

                                /* server responses */
#define DS_BUNDLE       8               /* computed bundle */
#define DS_ACKNOW       9               /* acknowledge request for attention */
#define DS_SHUTDOWN     10              /* end process and close connection */
#define DS_ADDHOLO      11              /* register new holodeck */
#define DS_STARTIMM     12              /* begin immediate bundle set */
#define DS_ENDIMM       13              /* end immediate bundle set */

/*
 * Normally, the server channel has priority, with the display process
 * checking it frequently for new data.  However, when the display process
 * makes a request for attention (DR_ATTEN), the server will finish its
 * current operations and flush its buffers, sending an acknowledge
 * message (DS_ACKNOW) when it's done.  This then allows the
 * display process to send a long request to the holodeck server.
 * Priority returns to normal after the following request.
 */

#ifndef BIGREQSIZ
#define BIGREQSIZ       512             /* big request size (bytes) */
#endif

typedef struct {
        int2    type;           /* message type */
        int4    nbytes;         /* number of additional bytes */
} MSGHEAD;              /* message head */
Revision:	3.5
Committed:	Wed Nov 26 21:34:27 1997 UTC (26 years, 5 months ago) by gregl
Content type:	text/plain
Branch:	MAIN
Changes since 3.4:	+9 -8 lines
Log Message:	eliminated queue flushing in sortbeamlist() added DS_ADJSET request for adjusting set quantities
#	User	Rev	Content
1	gregl	3.1	/* Copyright (c) 1997 Silicon Graphics, Inc. */
2
3			/* SCCSid "$SunId$ SGI" */
4
5			/*
6			* Header for holodeck display drivers.
7			*/
8
9			/* display requests */
10	gregl	3.4	#define DR_NOOP 0 /* to release from vain DR_ATTEN */
11	gregl	3.5	#define DR_BUNDLE 1 /* lone bundle request */
12	gregl	3.2	#define DR_ATTEN 2 /* request for attention */
13			#define DR_SHUTDOWN 3 /* shutdown request */
14			#define DR_NEWSET 4 /* new bundle set */
15	gregl	3.1	#define DR_ADDSET 5 /* add to current set */
16	gregl	3.5	#define DR_ADJSET 6 /* adjust set quantities */
17			#define DR_DELSET 7 /* delete from current set */
18	gregl	3.1
19			/* server responses */
20	gregl	3.5	#define DS_BUNDLE 8 /* computed bundle */
21			#define DS_ACKNOW 9 /* acknowledge request for attention */
22			#define DS_SHUTDOWN 10 /* end process and close connection */
23			#define DS_ADDHOLO 11 /* register new holodeck */
24			#define DS_STARTIMM 12 /* begin immediate bundle set */
25			#define DS_ENDIMM 13 /* end immediate bundle set */
26	gregl	3.1
27			/*
28			* Normally, the server channel has priority, with the display process
29			* checking it frequently for new data. However, when the display process
30			* makes a request for attention (DR_ATTEN), the server will finish its
31			* current operations and flush its buffers, sending an acknowledge
32			* message (DS_ACKNOW) when it's done. This then allows the
33			* display process to send a long request to the holodeck server.
34			* Priority returns to normal after the following request.
35			*/
36
37	gregl	3.3	#ifndef BIGREQSIZ
38			#define BIGREQSIZ 512 /* big request size (bytes) */
39			#endif
40
41	gregl	3.1	typedef struct {
42			int2 type; /* message type */
43			int4 nbytes; /* number of additional bytes */
44			} MSGHEAD; /* message head */