1 |
/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
2 |
|
3 |
#ifndef lint |
4 |
static char SCCSid[] = "$SunId$ SGI"; |
5 |
#endif |
6 |
|
7 |
/* |
8 |
* Holodeck display process. |
9 |
*/ |
10 |
|
11 |
#include "rholo.h" |
12 |
#include "rhdisp.h" |
13 |
#include "rhdriver.h" |
14 |
#include "selcall.h" |
15 |
#include <ctype.h> |
16 |
|
17 |
#ifndef VIEWHISTLEN |
18 |
#define VIEWHISTLEN 4 /* number of remembered views */ |
19 |
#endif |
20 |
|
21 |
#ifndef FSIZDEF |
22 |
#define FSIZDEF 0.125 /* default focus frame size */ |
23 |
#endif |
24 |
|
25 |
HOLO *hdlist[HDMAX+1]; /* global holodeck list */ |
26 |
|
27 |
char *hdofn[HDMAX+1]; /* holodeck section octree list */ |
28 |
|
29 |
char cmdlist[DC_NCMDS][8] = DC_INIT; |
30 |
|
31 |
int imm_mode = 0; /* bundles are being delivered immediately */ |
32 |
|
33 |
int do_outside = 0; /* render from outside sections */ |
34 |
|
35 |
double eyesepdist = 1; /* eye separation distance */ |
36 |
|
37 |
char *progname; /* global argv[0] */ |
38 |
|
39 |
FILE *sstdin, *sstdout; /* server's standard input and output */ |
40 |
|
41 |
#ifdef DEBUG |
42 |
#include <sys/types.h> |
43 |
extern time_t time(); |
44 |
static time_t tmodesw; |
45 |
static time_t timm, tadd; |
46 |
static long nimmrays, naddrays; |
47 |
#endif |
48 |
|
49 |
#define RDY_SRV 01 |
50 |
#define RDY_DEV 02 |
51 |
#define RDY_SIN 04 |
52 |
|
53 |
|
54 |
main(argc, argv) |
55 |
int argc; |
56 |
char *argv[]; |
57 |
{ |
58 |
extern int eputs(); |
59 |
int rdy, inp, res = 0, pause = 0; |
60 |
|
61 |
progname = argv[0]; |
62 |
if (argc < 3) |
63 |
error(USER, "bad command line arguments"); |
64 |
/* open our device */ |
65 |
dev_open(argv[1]); |
66 |
/* open server process i/o */ |
67 |
sstdout = fdopen(atoi(argv[2]), "w"); |
68 |
if (argc < 4 || (inp = atoi(argv[3])) < 0) |
69 |
sstdin = NULL; |
70 |
else |
71 |
sstdin = fdopen(inp, "r"); |
72 |
/* set command error vector */ |
73 |
erract[COMMAND].pf = eputs; |
74 |
#ifdef DEBUG |
75 |
tmodesw = time(NULL); |
76 |
#endif |
77 |
/* enter main loop */ |
78 |
do { |
79 |
rdy = disp_wait(); |
80 |
if (rdy & RDY_SRV) { /* process server result */ |
81 |
res = serv_result(); |
82 |
if (pause && res != DS_SHUTDOWN) { |
83 |
serv_request(DR_ATTEN, 0, NULL); |
84 |
while ((res = serv_result()) != DS_ACKNOW && |
85 |
res != DS_SHUTDOWN) |
86 |
; |
87 |
} |
88 |
} |
89 |
if (rdy & RDY_DEV) { /* user input from driver */ |
90 |
inp = dev_input(); |
91 |
if (inp & DFL(DC_SETVIEW)) |
92 |
new_view(&odev.v); |
93 |
else if (inp & DFL(DC_LASTVIEW)) |
94 |
new_view(NULL); |
95 |
if (inp & DFL(DC_REDRAW)) |
96 |
imm_mode = beam_sync(1) > 0; |
97 |
if (inp & DFL(DC_GETVIEW)) |
98 |
printview(); |
99 |
if (inp & DFL(DC_FOCUS)) |
100 |
set_focus(odev_args); |
101 |
if (inp & DFL(DC_KILL)) { |
102 |
serv_request(DR_KILL, 0, NULL); |
103 |
pause = 0; |
104 |
} |
105 |
if (inp & DFL(DC_CLOBBER)) |
106 |
serv_request(DR_CLOBBER, 0, NULL); |
107 |
if (inp & DFL(DC_RESTART)) { |
108 |
serv_request(DR_RESTART, 0, NULL); |
109 |
pause = 0; |
110 |
} |
111 |
if (inp & DFL(DC_RESUME)) { |
112 |
serv_request(DR_NOOP, 0, NULL); |
113 |
pause = 0; |
114 |
} |
115 |
if (inp & DFL(DC_PAUSE)) |
116 |
pause = 1; |
117 |
if (inp & DFL(DC_QUIT)) |
118 |
serv_request(DR_SHUTDOWN, 0, NULL); |
119 |
} |
120 |
if (rdy & RDY_SIN && !imm_mode) /* user input from sstdin */ |
121 |
switch (usr_input()) { |
122 |
case DC_PAUSE: |
123 |
pause = 1; |
124 |
break; |
125 |
case DC_RESUME: |
126 |
serv_request(DR_NOOP, 0, NULL); |
127 |
/* fall through */ |
128 |
case DC_KILL: |
129 |
case DC_RESTART: |
130 |
pause = 0; |
131 |
break; |
132 |
} |
133 |
} while (res != DS_SHUTDOWN); |
134 |
#ifdef DEBUG |
135 |
if (timm && nimmrays) |
136 |
fprintf(stderr, |
137 |
"%s: %.1f rays recalled/second (%ld rays total)\n", |
138 |
progname, (double)nimmrays/timm, nimmrays); |
139 |
if (tadd && naddrays) |
140 |
fprintf(stderr, |
141 |
"%s: %.1f rays calculated/second (%ld rays total)\n", |
142 |
progname, (double)naddrays/tadd, naddrays); |
143 |
#endif |
144 |
/* all done */ |
145 |
quit(0); |
146 |
} |
147 |
|
148 |
|
149 |
int |
150 |
disp_wait() /* wait for more input */ |
151 |
{ |
152 |
fd_set readset, errset; |
153 |
int flgs; |
154 |
int n; |
155 |
register int i; |
156 |
/* see if we can avoid select call */ |
157 |
flgs = 0; /* flag what's ready already */ |
158 |
if (imm_mode || stdin->_cnt > 0) |
159 |
flgs |= RDY_SRV; |
160 |
if (sstdin != NULL && sstdin->_cnt > 0) |
161 |
flgs |= RDY_SIN; |
162 |
if (odev.inpready) |
163 |
flgs |= RDY_DEV; |
164 |
if (flgs) /* got something? */ |
165 |
return(flgs); |
166 |
if (dev_flush()) /* else flush output & check keyboard+mouse */ |
167 |
return(RDY_DEV); |
168 |
/* if nothing, we need to call select */ |
169 |
FD_ZERO(&readset); FD_ZERO(&errset); |
170 |
FD_SET(0, &readset); |
171 |
FD_SET(0, &errset); |
172 |
FD_SET(odev.ifd, &readset); |
173 |
FD_SET(odev.ifd, &errset); |
174 |
n = odev.ifd+1; |
175 |
if (sstdin != NULL) { |
176 |
FD_SET(fileno(sstdin), &readset); |
177 |
FD_SET(fileno(sstdin), &errset); |
178 |
if (fileno(sstdin) >= n) |
179 |
n = fileno(sstdin) + 1; |
180 |
} |
181 |
n = select(n, &readset, NULL, &errset, NULL); |
182 |
if (n < 0) { |
183 |
if (errno == EINTR) |
184 |
return(0); |
185 |
error(SYSTEM, "select call failure in disp_wait"); |
186 |
} |
187 |
if (FD_ISSET(0, &readset) || FD_ISSET(0, &errset)) |
188 |
flgs |= RDY_SRV; |
189 |
if (FD_ISSET(odev.ifd, &readset) || FD_ISSET(odev.ifd, &errset)) |
190 |
flgs |= RDY_DEV; |
191 |
if (sstdin != NULL && (FD_ISSET(fileno(sstdin), &readset) || |
192 |
FD_ISSET(fileno(sstdin), &errset))) |
193 |
flgs |= RDY_SIN; |
194 |
return(flgs); |
195 |
} |
196 |
|
197 |
|
198 |
add_holo(hdg, ofn) /* register a new holodeck section */ |
199 |
HDGRID *hdg; |
200 |
char *ofn; |
201 |
{ |
202 |
VIEW nv; |
203 |
double d; |
204 |
register int hd; |
205 |
|
206 |
for (hd = 0; hd < HDMAX && hdlist[hd] != NULL; hd++) |
207 |
; |
208 |
if (hd >= HDMAX) |
209 |
error(INTERNAL, "too many holodeck sections in add_holo"); |
210 |
hdlist[hd] = (HOLO *)malloc(sizeof(HOLO)); |
211 |
if (hdlist[hd] == NULL) |
212 |
error(SYSTEM, "out of memory in add_holo"); |
213 |
bcopy((char *)hdg, (char *)hdlist[hd], sizeof(HDGRID)); |
214 |
hdcompgrid(hdlist[hd]); |
215 |
hdofn[hd] = savestr(ofn); |
216 |
if (hd) |
217 |
return; |
218 |
/* set initial viewpoint */ |
219 |
copystruct(&nv, &odev.v); |
220 |
VSUM(nv.vp, hdlist[0]->orig, hdlist[0]->xv[0], 0.5); |
221 |
VSUM(nv.vp, nv.vp, hdlist[0]->xv[1], 0.5); |
222 |
VSUM(nv.vp, nv.vp, hdlist[0]->xv[2], 0.5); |
223 |
fcross(nv.vdir, hdlist[0]->xv[1], hdlist[0]->xv[2]); |
224 |
VCOPY(nv.vup, hdlist[0]->xv[2]); |
225 |
if (do_outside) { |
226 |
normalize(nv.vdir); |
227 |
d = VLEN(hdlist[0]->xv[1]); |
228 |
d += VLEN(hdlist[0]->xv[2]); |
229 |
VSUM(nv.vp, nv.vp, nv.vdir, -d); |
230 |
} |
231 |
new_view(&nv); |
232 |
} |
233 |
|
234 |
|
235 |
disp_bundle(p) /* display a ray bundle */ |
236 |
register PACKHEAD *p; |
237 |
{ |
238 |
GCOORD gc[2]; |
239 |
FVECT ro, rd, wp; |
240 |
double d; |
241 |
register int i; |
242 |
/* get beam coordinates */ |
243 |
if (p->hd < 0 | p->hd >= HDMAX || hdlist[p->hd] == NULL) |
244 |
error(INTERNAL, "bad holodeck number in disp_bundle"); |
245 |
if (!hdbcoord(gc, hdlist[p->hd], p->bi)) |
246 |
error(INTERNAL, "bad beam index in disp_bundle"); |
247 |
/* display each ray */ |
248 |
for (i = p->nr; i--; ) { |
249 |
hdray(ro, rd, hdlist[p->hd], gc, packra(p)[i].r); |
250 |
d = hddepth(hdlist[p->hd], packra(p)[i].d); |
251 |
if (d < .99*FHUGE) { |
252 |
VSUM(wp, ro, rd, d); /* might be behind viewpoint */ |
253 |
dev_value(packra(p)[i].v, rd, wp); |
254 |
} else |
255 |
dev_value(packra(p)[i].v, rd, NULL); |
256 |
} |
257 |
#ifdef DEBUG |
258 |
if (imm_mode) nimmrays += p->nr; |
259 |
else naddrays += p->nr; |
260 |
#endif |
261 |
} |
262 |
|
263 |
|
264 |
new_view(v) /* change view parameters */ |
265 |
register VIEW *v; |
266 |
{ |
267 |
static VIEW viewhist[VIEWHISTLEN]; |
268 |
static unsigned nhist; |
269 |
VIEW *dv; |
270 |
int i, res[2], *slist; |
271 |
char *err; |
272 |
/* restore previous view? */ |
273 |
if (v == NULL) { |
274 |
if (nhist > 1) /* get one before last setting */ |
275 |
nhist--; |
276 |
else /* else go to end of list */ |
277 |
while (nhist < VIEWHISTLEN && viewhist[nhist].type) |
278 |
nhist++; |
279 |
v = viewhist + ((nhist-1)%VIEWHISTLEN); |
280 |
} else |
281 |
again: |
282 |
if ((err = setview(v)) != NULL) { |
283 |
error(COMMAND, err); |
284 |
return; |
285 |
} |
286 |
if (!dev_view(v)) /* notify display driver */ |
287 |
goto again; |
288 |
if (v->type == VT_PAR) { |
289 |
error(COMMAND, "cannot handle parallel views"); |
290 |
return; |
291 |
} |
292 |
beam_init(odev.firstuse); /* compute new beam set */ |
293 |
for (i = 0; (dv = dev_auxview(i, res)) != NULL; i++) { |
294 |
if ((slist = beam_view(dv, res[0], res[1])) == NULL) { |
295 |
if (!nhist) { |
296 |
error(COMMAND, "invalid starting view"); |
297 |
return; |
298 |
} |
299 |
copystruct(v, viewhist + ((nhist-1)%VIEWHISTLEN)); |
300 |
goto again; /* poss. overloading dev_section()? */ |
301 |
} |
302 |
DCHECK(*slist < 0, WARNING, "no visible sections in new_view"); |
303 |
while (*slist >= 0) |
304 |
dev_section(hdofn[*slist++]); |
305 |
} |
306 |
dev_section(NULL); /* end section list */ |
307 |
dev_flush(); /* update display */ |
308 |
/* update server */ |
309 |
imm_mode = beam_sync(odev.firstuse) > 0; |
310 |
/* record new view */ |
311 |
if (v < viewhist || v >= viewhist+VIEWHISTLEN) { |
312 |
copystruct(viewhist + (nhist%VIEWHISTLEN), v); |
313 |
nhist++; |
314 |
} |
315 |
} |
316 |
|
317 |
|
318 |
set_focus(args) /* set focus frame */ |
319 |
char *args; |
320 |
{ |
321 |
double hcent, vcent, hsiz, vsiz; |
322 |
VIEW *dv, vwfocus; |
323 |
int i, res[2]; |
324 |
|
325 |
i = sscanf(args, "%lf %lf %lf %lf", &hcent, &vcent, &hsiz, &vsiz); |
326 |
if (i < 2 || hcent < 0 || hcent > 1 || vcent < 0 || vcent > 1) { |
327 |
beam_init(0); /* restore view */ |
328 |
for (i = 0; (dv = dev_auxview(i, res)) != NULL; i++) |
329 |
beam_view(dv, res[0], res[1]); |
330 |
beam_sync(0); /* update server */ |
331 |
return; |
332 |
} |
333 |
if (i < 4 || hsiz <= hcent || hsiz > 1 || vsiz <= vcent || vsiz > 1) |
334 |
hsiz = vsiz = FSIZDEF; /* gave center only */ |
335 |
else { |
336 |
hsiz -= hcent; hcent += 0.5*hsiz; /* gave min and max */ |
337 |
vsiz -= vcent; vcent += 0.5*vsiz; |
338 |
} |
339 |
beam_init(0); /* add basic views */ |
340 |
for (i = 0; (dv = dev_auxview(i, res)) != NULL; i++) |
341 |
beam_view(dv, res[0]>>4, res[1]>>4); |
342 |
copystruct(&vwfocus, &odev.v); /* add focus view */ |
343 |
switch (odev.v.type) { |
344 |
case VT_PER: |
345 |
vwfocus.horiz = 2.*180./PI*atan( |
346 |
hsiz * tan(PI/180./2.*odev.v.horiz) ); |
347 |
vwfocus.vert = 2.*180./PI*atan( |
348 |
vsiz * tan(PI/180./2.*odev.v.vert) ); |
349 |
break; |
350 |
case VT_PAR: |
351 |
case VT_ANG: |
352 |
vwfocus.horiz = hsiz * odev.v.horiz; |
353 |
vwfocus.vert = vsiz * odev.v.vert; |
354 |
break; |
355 |
case VT_HEM: |
356 |
vwfocus.horiz = 2.*180./PI*asin( |
357 |
hsiz * sin(PI/180./2.*odev.v.horiz) ); |
358 |
vwfocus.vert = 2.*180./PI*asin( |
359 |
vsiz * sin(PI/180./2.*odev.v.vert) ); |
360 |
break; |
361 |
case VT_CYL: |
362 |
vwfocus.horiz = hsiz * odev.v.horiz; |
363 |
vwfocus.vert = 2.*180./PI*atan( |
364 |
vsiz * tan(PI/180./2.*odev.v.vert) ); |
365 |
break; |
366 |
default: |
367 |
error(INTERNAL, "bad view type in set_focus"); |
368 |
} |
369 |
vwfocus.hoff = (odev.v.hoff + hcent - 0.5)/hsiz; |
370 |
vwfocus.voff = (odev.v.voff + vcent - 0.5)/vsiz; |
371 |
setview(&vwfocus); |
372 |
beam_view(&vwfocus, (int)(3*odev.hres*hsiz)+100, |
373 |
(int)(3*odev.vres*vsiz)+100); |
374 |
beam_sync(0); /* update server */ |
375 |
} |
376 |
|
377 |
|
378 |
int |
379 |
usr_input() /* get user input and process it */ |
380 |
{ |
381 |
VIEW vparams; |
382 |
char cmd[256]; |
383 |
register char *args; |
384 |
register int i; |
385 |
|
386 |
if (fgets(cmd, sizeof(cmd), sstdin) == NULL) { |
387 |
fclose(sstdin); |
388 |
sstdin = NULL; |
389 |
return(-1); |
390 |
} |
391 |
if (*cmd == '\n') |
392 |
return(DC_RESUME); |
393 |
for (args = cmd; *args && !isspace(*args); args++) |
394 |
; |
395 |
while (isspace(*args)) |
396 |
*args++ = '\0'; |
397 |
if (*args && args[i=strlen(args)-1] == '\n') |
398 |
args[i] = '\0'; |
399 |
for (i = 0; i < DC_NCMDS; i++) |
400 |
if (!strcmp(cmd, cmdlist[i])) |
401 |
break; |
402 |
if (i >= DC_NCMDS) { |
403 |
dev_auxcom(cmd, args); |
404 |
return(-1); |
405 |
} |
406 |
switch (i) { |
407 |
case DC_SETVIEW: /* set the view */ |
408 |
copystruct(&vparams, &odev.v); |
409 |
if (!sscanview(&vparams, args)) |
410 |
error(COMMAND, "missing view options"); |
411 |
else |
412 |
new_view(&vparams); |
413 |
break; |
414 |
case DC_GETVIEW: /* print the current view */ |
415 |
printview(); |
416 |
break; |
417 |
case DC_LASTVIEW: /* restore previous view */ |
418 |
new_view(NULL); |
419 |
break; |
420 |
case DC_FOCUS: /* set focus frame */ |
421 |
set_focus(args); |
422 |
break; |
423 |
case DC_PAUSE: /* pause the current calculation */ |
424 |
case DC_RESUME: /* resume the calculation */ |
425 |
/* handled in main() */ |
426 |
break; |
427 |
case DC_REDRAW: /* redraw from server */ |
428 |
imm_mode = beam_sync(1) > 0; |
429 |
dev_clear(); |
430 |
break; |
431 |
case DC_KILL: /* kill rtrace process(es) */ |
432 |
serv_request(DR_KILL, 0, NULL); |
433 |
break; |
434 |
case DC_CLOBBER: /* clobber holodeck */ |
435 |
serv_request(DR_CLOBBER, 0, NULL); |
436 |
break; |
437 |
case DC_RESTART: /* restart rtrace */ |
438 |
serv_request(DR_RESTART, 0, NULL); |
439 |
break; |
440 |
case DC_QUIT: /* quit request */ |
441 |
serv_request(DR_SHUTDOWN, 0, NULL); |
442 |
break; |
443 |
default: |
444 |
error(CONSISTENCY, "bad command id in usr_input"); |
445 |
} |
446 |
return(i); |
447 |
} |
448 |
|
449 |
|
450 |
printview() /* print our current view to server stdout */ |
451 |
{ |
452 |
fputs(VIEWSTR, sstdout); |
453 |
fprintview(&odev.v, sstdout); |
454 |
fputc('\n', sstdout); |
455 |
fflush(sstdout); |
456 |
} |
457 |
|
458 |
|
459 |
int |
460 |
serv_result() /* get next server result and process it */ |
461 |
{ |
462 |
static char *buf = NULL; |
463 |
static int bufsiz = 0; |
464 |
MSGHEAD msg; |
465 |
int n; |
466 |
/* read message header */ |
467 |
if (fread((char *)&msg, sizeof(MSGHEAD), 1, stdin) != 1) |
468 |
goto readerr; |
469 |
if (msg.nbytes > 0) { /* get the message body */ |
470 |
if (msg.nbytes > bufsiz) { |
471 |
if (buf == NULL) |
472 |
buf = (char *)malloc(bufsiz=msg.nbytes); |
473 |
else |
474 |
buf = (char *)realloc(buf, bufsiz=msg.nbytes); |
475 |
if (buf == NULL) |
476 |
error(SYSTEM, "out of memory in serv_result"); |
477 |
} |
478 |
if (fread(buf, 1, msg.nbytes, stdin) != msg.nbytes) |
479 |
goto readerr; |
480 |
} |
481 |
switch (msg.type) { /* process results */ |
482 |
case DS_BUNDLE: |
483 |
if (msg.nbytes < sizeof(PACKHEAD) || |
484 |
msg.nbytes != packsiz(((PACKHEAD *)buf)->nr)) |
485 |
error(INTERNAL, "bad display packet from server"); |
486 |
disp_bundle((PACKHEAD *)buf); |
487 |
break; |
488 |
case DS_ADDHOLO: |
489 |
if (msg.nbytes <= sizeof(HDGRID)) |
490 |
error(INTERNAL, "bad holodeck record from server"); |
491 |
add_holo((HDGRID *)buf, buf+sizeof(HDGRID)); |
492 |
break; |
493 |
case DS_OUTSECT: |
494 |
do_outside = 1; |
495 |
goto noargs; |
496 |
case DS_EYESEP: |
497 |
if (msg.nbytes <= 1 || (eyesepdist = atof(buf)) <= FTINY) |
498 |
error(INTERNAL, "bad eye separation from server"); |
499 |
break; |
500 |
case DS_STARTIMM: |
501 |
case DS_ENDIMM: |
502 |
#ifdef DEBUG |
503 |
{ |
504 |
time_t tnow = time(NULL); |
505 |
if (msg.type==DS_STARTIMM) tadd += tnow - tmodesw; |
506 |
else timm += tnow - tmodesw; |
507 |
tmodesw = tnow; |
508 |
} |
509 |
#endif |
510 |
if (!(imm_mode = msg.type==DS_STARTIMM)) |
511 |
dev_flush(); |
512 |
goto noargs; |
513 |
case DS_ACKNOW: |
514 |
case DS_SHUTDOWN: |
515 |
goto noargs; |
516 |
default: |
517 |
error(INTERNAL, "unrecognized result from server process"); |
518 |
} |
519 |
return(msg.type); /* return message type */ |
520 |
noargs: |
521 |
if (msg.nbytes) { |
522 |
sprintf(errmsg, "unexpected body with server message %d", |
523 |
msg.type); |
524 |
error(INTERNAL, errmsg); |
525 |
} |
526 |
return(msg.type); |
527 |
readerr: |
528 |
if (feof(stdin)) |
529 |
error(SYSTEM, "server process died"); |
530 |
error(SYSTEM, "error reading from server process"); |
531 |
} |
532 |
|
533 |
|
534 |
serv_request(type, nbytes, p) /* send a request to the server process */ |
535 |
int type, nbytes; |
536 |
char *p; |
537 |
{ |
538 |
MSGHEAD msg; |
539 |
int m; |
540 |
/* consistency checks */ |
541 |
DCHECK(nbytes < 0 || nbytes > 0 & p == NULL, |
542 |
CONSISTENCY, "bad buffer handed to serv_request"); |
543 |
/* get server's attention for big request */ |
544 |
if (nbytes >= BIGREQSIZ-sizeof(MSGHEAD)) { |
545 |
serv_request(DR_ATTEN, 0, NULL); |
546 |
while ((m = serv_result()) != DS_ACKNOW) |
547 |
if (m == DS_SHUTDOWN) /* the bugger quit on us */ |
548 |
quit(0); |
549 |
} |
550 |
msg.type = type; /* write and flush the message */ |
551 |
msg.nbytes = nbytes; |
552 |
fwrite((char *)&msg, sizeof(MSGHEAD), 1, stdout); |
553 |
if (nbytes > 0) |
554 |
fwrite(p, 1, nbytes, stdout); |
555 |
if (fflush(stdout) < 0) |
556 |
error(SYSTEM, "write error in serv_request"); |
557 |
} |
558 |
|
559 |
|
560 |
eputs(s) /* put error message to stderr */ |
561 |
register char *s; |
562 |
{ |
563 |
static int midline = 0; |
564 |
|
565 |
if (!*s) |
566 |
return; |
567 |
if (!midline++) { /* prepend line with program name */ |
568 |
fputs(progname, stderr); |
569 |
fputs(": ", stderr); |
570 |
} |
571 |
fputs(s, stderr); |
572 |
if (s[strlen(s)-1] == '\n') { |
573 |
fflush(stderr); |
574 |
midline = 0; |
575 |
} |
576 |
} |
577 |
|
578 |
|
579 |
quit(code) /* clean up and exit */ |
580 |
int code; |
581 |
{ |
582 |
if (odev.v.type) |
583 |
dev_close(); |
584 |
exit(code); |
585 |
} |