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root/radiance/ray/src/hd/rholo.c
Revision: 3.41
Committed: Thu Oct 8 14:52:26 1998 UTC (25 years, 5 months ago) by gwlarson
Content type: text/plain
Branch: MAIN
Changes since 3.40: +8 -1 lines
Log Message:
added holodeck synchronization when cache size is unlimited

File Contents

# Content
1 /* Copyright (c) 1998 Silicon Graphics, Inc. */
2
3 #ifndef lint
4 static char SCCSid[] = "$SunId$ SGI";
5 #endif
6
7 /*
8 * Radiance holodeck generation controller
9 */
10
11 #include "rholo.h"
12 #include "random.h"
13 #include <signal.h>
14 #include <sys/types.h>
15 #include <sys/stat.h>
16
17 #ifndef MAXQTIME
18 #define MAXQTIME 5 /* target maximum seconds in queue */
19 #endif
20 /* the following must be consistent with rholo.h */
21 int NVARS = NRHVARS; /* total number of variables */
22
23 VARIABLE vv[] = RHVINIT; /* variable-value pairs */
24
25 char *progname; /* our program name */
26 char *hdkfile; /* holodeck file name */
27 char froot[256]; /* root file name */
28
29 int ncprocs = 0; /* desired number of compute processes */
30
31 char *outdev = NULL; /* output device name */
32
33 int readinp = 0; /* read commands from stdin */
34
35 int force = 0; /* allow overwrite of holodeck */
36
37 time_t starttime; /* time we got started */
38 time_t endtime; /* time we should end by */
39 time_t reporttime; /* time for next report */
40
41 long maxdisk; /* maximum file space (bytes) */
42
43 int rtargc = 1; /* rtrace command */
44 char *rtargv[128] = {"rtrace", NULL};
45
46 int orig_mode = -1; /* original file mode (-1 if unchanged) */
47
48 long nraysdone = 0L; /* number of rays done */
49 long npacksdone = 0L; /* number of packets done */
50
51 PACKET *freepacks; /* available packets */
52 int totqlen; /* maximum queue length when full */
53
54 char *sigerr[NSIG]; /* signal error messages */
55
56 extern int nowarn; /* turn warnings off? */
57
58 extern time_t time();
59
60
61 main(argc, argv)
62 int argc;
63 char *argv[];
64 {
65 int i;
66
67 initurand(16384); /* initialize urand */
68 progname = argv[0]; /* get arguments */
69 for (i = 1; i < argc && argv[i][0] == '-'; i++)
70 switch (argv[i][1]) {
71 case 'w': /* turn off warnings */
72 nowarn++;
73 break;
74 case 'f': /* force overwrite */
75 force++;
76 break;
77 case 'i': /* read input from stdin */
78 readinp++;
79 break;
80 case 'n': /* compute processes */
81 if (i >= argc-2)
82 goto userr;
83 ncprocs = atoi(argv[++i]);
84 break;
85 case 'o': /* output display */
86 if (i >= argc-2)
87 goto userr;
88 outdev = argv[++i];
89 break;
90 default:
91 goto userr;
92 }
93 /* get root file name */
94 if (i >= argc)
95 goto userr;
96 rootname(froot, hdkfile=argv[i++]);
97 /* load variables? */
98 if (i < argc)
99 if (argv[i][0] != '-' && argv[i][0] != '+')
100 loadvars(argv[i]); /* load variables from file */
101
102 if (i >= argc || argv[i][0] == '+')
103 loadholo(); /* load existing holodeck */
104
105 while (++i < argc) /* get command line settings */
106 if (setvariable(argv[i], matchvar) < 0) {
107 sprintf(errmsg, "unknown variable: %s", argv[i]);
108 error(USER, errmsg);
109 }
110 /* check settings */
111 checkvalues();
112 /* load rad input file */
113 getradfile();
114
115 if (hdlist[0] == NULL) { /* create new holodeck */
116 HDGRID hdg[HDMAX];
117 /* set defaults */
118 setdefaults(hdg);
119 /* holodeck exists? */
120 if (!force && access(hdkfile, R_OK|W_OK) == 0)
121 error(USER,
122 "holodeck file exists -- use -f to overwrite");
123 /* create holodeck */
124 creatholo(hdg);
125 } else /* else just set defaults */
126 setdefaults(NULL);
127 /* initialize */
128 initrholo();
129 /* main loop */
130 while (rholo())
131 ;
132 /* done */
133 quit(0);
134 userr:
135 fprintf(stderr,
136 "Usage: %s [-n nprocs][-o disp][-w][-f] output.hdk [control.hif|+|- [VAR=val ..]]\n",
137 progname);
138 quit(1);
139 }
140
141
142 onsig(signo) /* fatal signal */
143 int signo;
144 {
145 static int gotsig = 0;
146
147 if (gotsig++) /* two signals and we're gone! */
148 _exit(signo);
149
150 alarm(60); /* allow 60 seconds to clean up */
151 signal(SIGALRM, SIG_DFL); /* make certain we do die */
152 eputs("signal - ");
153 eputs(sigerr[signo]);
154 eputs("\n");
155 quit(3);
156 }
157
158
159 sigdie(signo, msg) /* set fatal signal */
160 int signo;
161 char *msg;
162 {
163 if (signal(signo, onsig) == SIG_IGN)
164 signal(signo, SIG_IGN);
165 sigerr[signo] = msg;
166 }
167
168
169 int
170 resfmode(fd, mod) /* restrict open file access mode */
171 int fd, mod;
172 {
173 struct stat stbuf;
174 /* get original mode */
175 if (fstat(fd, &stbuf) < 0)
176 error(SYSTEM, "cannot stat open holodeck file");
177 mod &= stbuf.st_mode; /* always more restrictive */
178 if (mod == (stbuf.st_mode & 0777))
179 return(-1); /* already set */
180 /* else change it */
181 if (fchmod(fd, mod) < 0) {
182 error(WARNING, "cannot change holodeck file access mode");
183 return(-1);
184 }
185 return(stbuf.st_mode); /* return original mode */
186 }
187
188
189 initrholo() /* get our holodeck running */
190 {
191 extern int global_packet();
192 register int i;
193 /* close holodeck on exec() */
194 fcntl(hdlist[0]->fd, F_SETFD, FD_CLOEXEC);
195
196 if (outdev != NULL) /* open output device */
197 disp_open(outdev);
198 else if (ncprocs > 0) /* else use global ray feed */
199 init_global();
200 /* record disk space limit */
201 if (!vdef(DISKSPACE))
202 maxdisk = 0;
203 else
204 maxdisk = 1024.*1024.*vflt(DISKSPACE);
205 /* set up memory cache */
206 if (outdev == NULL)
207 hdcachesize = 0; /* manual flushing */
208 else if (vdef(CACHE))
209 hdcachesize = 1024.*1024.*vflt(CACHE);
210 /* open report file */
211 if (vdef(REPORT)) {
212 register char *s = sskip2(vval(REPORT), 1);
213 if (*s && freopen(s, "a", stderr) == NULL)
214 quit(2);
215 }
216 /* mark the starting time */
217 starttime = time(NULL);
218 /* compute end time */
219 if (!vdef(TIME) || vflt(TIME) <= FTINY)
220 endtime = 0;
221 else
222 endtime = starttime + vflt(TIME)*3600. + .5;
223 /* start rtrace */
224 if (ncprocs > 0) {
225 totqlen = i = start_rtrace();
226 if (i < 1)
227 error(USER, "cannot start rtrace process(es)");
228 if (vdef(REPORT)) { /* make first report */
229 printargs(rtargc, rtargv, stderr);
230 report(0);
231 }
232 /* allocate packets */
233 freepacks = (PACKET *)bmalloc(i*sizeof(PACKET));
234 if (freepacks == NULL)
235 goto memerr;
236 freepacks[--i].nr = 0;
237 freepacks[i].next = NULL;
238 if (!vdef(OBSTRUCTIONS) || !vbool(OBSTRUCTIONS)) {
239 freepacks[i].offset = (float *)bmalloc(
240 RPACKSIZ*sizeof(float)*(i+1) );
241 if (freepacks[i].offset == NULL)
242 goto memerr;
243 } else
244 freepacks[i].offset = NULL;
245 while (i--) {
246 freepacks[i].nr = 0;
247 freepacks[i].offset = freepacks[i+1].offset == NULL ?
248 NULL : freepacks[i+1].offset+RPACKSIZ ;
249 freepacks[i].next = &freepacks[i+1];
250 }
251 }
252 /* set up signal handling */
253 sigdie(SIGINT, "Interrupt");
254 sigdie(SIGHUP, "Hangup");
255 sigdie(SIGTERM, "Terminate");
256 sigdie(SIGPIPE, "Broken pipe");
257 sigdie(SIGALRM, "Alarm clock");
258 #ifdef SIGXCPU
259 sigdie(SIGXCPU, "CPU limit exceeded");
260 sigdie(SIGXFSZ, "File size exceeded");
261 #endif
262 /* protect holodeck file */
263 orig_mode = resfmode(hdlist[0]->fd, ncprocs>0 ? 0 : 0444);
264 return;
265 memerr:
266 error(SYSTEM, "out of memory in initrholo");
267 }
268
269
270 rholo() /* holodeck main loop */
271 {
272 static int idle = 0;
273 PACKET *pl = NULL, *plend;
274 int pksiz;
275 register PACKET *p;
276 time_t t;
277 /* check display */
278 if (nprocs <= 0)
279 idle = 1;
280 if (outdev != NULL) {
281 if (!disp_check(idle))
282 return(0); /* quit request */
283 if (nprocs <= 0)
284 return(1);
285 } else if (idle)
286 return(0); /* all done */
287 /* check file size */
288 if (maxdisk > 0 && hdfilen(hdlist[0]->fd) >= maxdisk) {
289 error(WARNING, "file limit exceeded");
290 done_rtrace();
291 return(1); /* comes back */
292 }
293 t = time(NULL); /* check time */
294 if (endtime > 0 && t >= endtime) {
295 error(WARNING, "time limit exceeded");
296 done_rtrace();
297 return(1); /* comes back */
298 }
299 if (reporttime > 0 && t >= reporttime)
300 report(t);
301 /* figure out good packet size */
302 #if MAXQTIME
303 pksiz = nraysdone*MAXQTIME/(totqlen*(t - starttime + 1L));
304 if (pksiz < 1)
305 pksiz = 1;
306 else if (pksiz > RPACKSIZ)
307 #endif
308 pksiz = RPACKSIZ;
309 idle = 0; /* get packets to process */
310 while (freepacks != NULL) {
311 p = freepacks; freepacks = p->next; p->next = NULL;
312 if (!next_packet(p, pksiz)) {
313 p->next = freepacks; freepacks = p;
314 idle = 1;
315 break;
316 }
317 if (pl == NULL) pl = p;
318 else plend->next = p;
319 plend = p;
320 }
321 /* process packets */
322 done_packets(do_packets(pl));
323 return(1); /* and continue */
324 }
325
326
327 setdefaults(gp) /* set default values */
328 register HDGRID *gp;
329 {
330 extern char *atos();
331 register int i;
332 int n;
333 double len[3], d;
334 char buf[64];
335
336 if (!vdef(SECTION)) {
337 sprintf(errmsg, "%s must be defined", vnam(SECTION));
338 error(USER, errmsg);
339 }
340 if (!vdef(OCTREE)) {
341 if ((vval(OCTREE) = bmalloc(strlen(froot)+5)) == NULL)
342 error(SYSTEM, "out of memory");
343 sprintf(vval(OCTREE), "%s.oct", froot);
344 vdef(OCTREE)++;
345 }
346 if (!vdef(VDIST)) {
347 vval(VDIST) = "F";
348 vdef(VDIST)++;
349 }
350 /* append rendering options */
351 if (vdef(RENDER))
352 rtargc += wordstring(rtargv+rtargc, vval(RENDER));
353
354 if (gp == NULL) /* already initialized? */
355 return;
356 /* set grid parameters */
357 for (n = 0; n < vdef(SECTION); n++, gp++) {
358 gp->grid[0] = gp->grid[1] = gp->grid[2] = 0;
359 if (sscanf(nvalue(SECTION, n),
360 "%lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %hd %hd %hd",
361 &gp->orig[0], &gp->orig[1], &gp->orig[2],
362 &gp->xv[0][0], &gp->xv[0][1], &gp->xv[0][2],
363 &gp->xv[1][0], &gp->xv[1][1], &gp->xv[1][2],
364 &gp->xv[2][0], &gp->xv[2][1], &gp->xv[2][2],
365 &gp->grid[0], &gp->grid[1], &gp->grid[2]) < 12)
366 badvalue(SECTION);
367 for (i = 0; i < 3; i++)
368 len[i] = VLEN(gp->xv[i]);
369 if (!vdef(GRID)) {
370 d = 2/5e5*( len[0]*len[0]*(len[1]*len[1] +
371 len[2]*len[2] + 4*len[1]*len[2])
372 + len[1]*len[1]*len[2]*(len[2] + 4*len[0])
373 + 4*len[0]*len[1]*len[2]*len[2] );
374 d = sqrt(sqrt(d));
375 } else if ((d = vflt(GRID)) <= FTINY)
376 badvalue(GRID);
377 for (i = 0; i < 3; i++)
378 if (gp->grid[i] <= 0)
379 gp->grid[i] = len[i]/d + (1.-FTINY);
380 }
381 }
382
383
384 creatholo(gp) /* create a holodeck output file */
385 HDGRID *gp;
386 {
387 extern char VersionID[];
388 int4 lastloc, nextloc;
389 int n;
390 int fd;
391 FILE *fp;
392 /* open & truncate file */
393 if ((fp = fopen(hdkfile, "w+")) == NULL) {
394 sprintf(errmsg, "cannot open \"%s\" for writing", hdkfile);
395 error(SYSTEM, errmsg);
396 }
397 /* write information header */
398 newheader("RADIANCE", fp);
399 fprintf(fp, "SOFTWARE= %s\n", VersionID);
400 printvars(fp);
401 fputformat(HOLOFMT, fp);
402 fputc('\n', fp);
403 putw(HOLOMAGIC, fp); /* put magic number */
404 fd = dup(fileno(fp));
405 fclose(fp); /* flush and close stdio stream */
406 lastloc = lseek(fd, 0L, 2);
407 for (n = vdef(SECTION); n--; gp++) { /* initialize each section */
408 nextloc = 0L;
409 write(fd, (char *)&nextloc, sizeof(nextloc));
410 hdinit(fd, gp); /* writes beam index */
411 if (!n)
412 break;
413 nextloc = hdfilen(fd); /* write section pointer */
414 if (lseek(fd, (long)lastloc, 0) < 0)
415 error(SYSTEM,
416 "cannot seek on holodeck file in creatholo");
417 write(fd, (char *)&nextloc, sizeof(nextloc));
418 lseek(fd, (long)(lastloc=nextloc), 0);
419 }
420 }
421
422
423 headline(s) /* process information header line */
424 char *s;
425 {
426 extern char FMTSTR[];
427 register char *cp;
428 char fmt[32];
429
430 if (formatval(fmt, s)) {
431 if (strcmp(fmt, HOLOFMT)) {
432 sprintf(errmsg, "%s file \"%s\" has %s%s",
433 HOLOFMT, hdkfile, FMTSTR, fmt);
434 error(USER, errmsg);
435 }
436 return;
437 }
438 for (cp = s; *cp; cp++) /* take off any comments */
439 if (*cp == '#') {
440 *cp = '\0';
441 break;
442 }
443 setvariable(s, matchvar); /* don't flag errors */
444 }
445
446
447 loadholo() /* start loading a holodeck from fname */
448 {
449 extern long ftell();
450 FILE *fp;
451 int fd;
452 int n;
453 int4 nextloc;
454 /* open holodeck file */
455 if ((fp = fopen(hdkfile, ncprocs>0 ? "r+" : "r")) == NULL) {
456 sprintf(errmsg, "cannot %s \"%s\"",
457 ncprocs>0 ? "append" : "read", hdkfile);
458 error(SYSTEM, errmsg);
459 }
460 /* load variables from header */
461 getheader(fp, headline, NULL);
462 /* check magic number */
463 if (getw(fp) != HOLOMAGIC) {
464 sprintf(errmsg, "bad magic number in holodeck file \"%s\"",
465 hdkfile);
466 error(USER, errmsg);
467 }
468 nextloc = ftell(fp); /* get stdio position */
469 fd = dup(fileno(fp));
470 fclose(fp); /* done with stdio */
471 for (n = 0; nextloc > 0L; n++) { /* initialize each section */
472 lseek(fd, (long)nextloc, 0);
473 read(fd, (char *)&nextloc, sizeof(nextloc));
474 hdinit(fd, NULL);
475 }
476 if (n != vdef(SECTION)) {
477 sprintf(errmsg, "number of sections does not match %s setting",
478 vnam(SECTION));
479 error(WARNING, errmsg);
480 }
481 }
482
483
484 done_packets(pl) /* handle finished packets */
485 PACKET *pl;
486 {
487 static int n2flush = 0;
488 register PACKET *p;
489
490 while (pl != NULL) {
491 p = pl; pl = p->next; p->next = NULL;
492 if (p->nr > 0) { /* add to holodeck */
493 bcopy((char *)p->ra,
494 (char *)hdnewrays(hdlist[p->hd],p->bi,p->nr),
495 p->nr*sizeof(RAYVAL));
496 if (outdev != NULL) /* display it */
497 disp_packet((PACKHEAD *)p);
498 if (hdcachesize <= 0) /* manual flushing */
499 n2flush++;
500 nraysdone += p->nr;
501 npacksdone++;
502 p->nr = 0;
503 }
504 p->next = freepacks; /* push onto free list */
505 freepacks = p;
506 }
507 #if MAXQTIME
508 if (n2flush > 300/MAXQTIME*totqlen) {
509 #else
510 if (n2flush > 50*totqlen) {
511 #endif
512 if (outdev == NULL)
513 hdflush(NULL); /* flush holodeck buffers */
514 else
515 hdsync(NULL, 1); /* sync holodeck file */
516 n2flush = 0;
517 }
518 }
519
520
521 rootname(rn, fn) /* remove tail from end of fn */
522 register char *rn, *fn;
523 {
524 char *tp, *dp;
525
526 for (tp = NULL, dp = rn; *rn = *fn++; rn++)
527 if (*rn == '/')
528 dp = rn;
529 else if (*rn == '.')
530 tp = rn;
531 if (tp != NULL && tp > dp)
532 *tp = '\0';
533 }
534
535
536 badvalue(vc) /* report bad variable value and exit */
537 int vc;
538 {
539 sprintf(errmsg, "bad value for variable '%s'", vnam(vc));
540 error(USER, errmsg);
541 }
542
543
544 eputs(s) /* put error message to stderr */
545 register char *s;
546 {
547 static int midline = 0;
548
549 if (!*s)
550 return;
551 if (!midline++) { /* prepend line with program name */
552 fputs(progname, stderr);
553 fputs(": ", stderr);
554 }
555 fputs(s, stderr);
556 if (s[strlen(s)-1] == '\n') {
557 fflush(stderr);
558 midline = 0;
559 }
560 }
561
562
563 quit(ec) /* exit program gracefully */
564 int ec;
565 {
566 int status = 0;
567
568 if (hdlist[0] != NULL) { /* close holodeck */
569 if (nprocs > 0)
570 status = done_rtrace(); /* calls hdsync() */
571 if (ncprocs > 0 && vdef(REPORT)) {
572 long fsiz, fuse;
573 fsiz = hdfilen(hdlist[0]->fd);
574 fuse = hdfiluse(hdlist[0]->fd, 1);
575 fprintf(stderr,
576 "%s: %.1f Mbyte holodeck file, %.1f%% fragmentation\n",
577 hdkfile, fsiz/(1024.*1024.),
578 100.*(fsiz-fuse)/fsiz);
579 }
580 }
581 if (orig_mode >= 0) /* reset holodeck access mode */
582 fchmod(hdlist[0]->fd, orig_mode);
583 if (outdev != NULL) /* close display */
584 disp_close();
585 exit(ec ? ec : status); /* exit */
586 }