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root/radiance/ray/src/hd/rholo.c
Revision: 3.13
Committed: Wed Nov 26 20:13:55 1997 UTC (26 years, 4 months ago) by gregl
Content type: text/plain
Branch: MAIN
Changes since 3.12: +5 -5 lines
Log Message:
changed flushing code to account for multiple processes

File Contents

# User Rev Content
1 gregl 3.1 /* Copyright (c) 1997 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 "paths.h"
13 gregl 3.12 #include <signal.h>
14 gregl 3.1 #include <sys/types.h>
15 gregl 3.12 #include <sys/stat.h>
16 gregl 3.1
17     /* the following must be consistent with rholo.h */
18     int NVARS = NRHVARS; /* total number of variables */
19    
20     VARIABLE vv[] = RHVINIT; /* variable-value pairs */
21    
22     char *progname; /* our program name */
23     char *hdkfile; /* holodeck file name */
24     char froot[MAXPATH]; /* root file name */
25    
26     int nowarn = 0; /* turn warnings off? */
27    
28     double expval = 1.; /* global exposure value */
29    
30     int ncprocs = 0; /* desired number of compute processes */
31    
32     char *outdev = NULL; /* output device name */
33    
34     time_t starttime; /* time we got started */
35     time_t endtime; /* time we should end by */
36     time_t reporttime; /* time for next report */
37    
38 gregl 3.8 long maxdisk; /* maximum file space (bytes) */
39    
40 gregl 3.1 int rtargc = 1; /* rtrace command */
41     char *rtargv[128] = {"rtrace", NULL};
42    
43 gregl 3.12 int orig_mode = -1; /* original file mode (-1 if unchanged) */
44    
45 gregl 3.1 long nraysdone = 0L; /* number of rays done */
46     long npacksdone = 0L; /* number of packets done */
47    
48     PACKET *freepacks; /* available packets */
49    
50 gregl 3.12 char *sigerr[NSIG]; /* signal error messages */
51    
52 gregl 3.1 extern time_t time();
53    
54    
55     main(argc, argv)
56     int argc;
57     char *argv[];
58     {
59     HDGRID hdg;
60     int i;
61     int force = 0;
62 gregl 3.3 /* mark start time */
63     starttime = time(NULL);
64 gregl 3.1 progname = argv[0]; /* get arguments */
65     for (i = 1; i < argc && argv[i][0] == '-'; i++)
66     switch (argv[i][1]) {
67     case 'w': /* turn off warnings */
68     nowarn++;
69     break;
70     case 'f': /* force overwrite */
71     force++;
72     break;
73     case 'n': /* compute processes */
74     if (i >= argc-2)
75     goto userr;
76     ncprocs = atoi(argv[++i]);
77     break;
78     case 'o': /* output display */
79     if (i >= argc-2)
80     goto userr;
81     outdev = argv[++i];
82     break;
83     default:
84     goto userr;
85     }
86     /* do we have a job? */
87     if (outdev == NULL && ncprocs <= 0)
88     goto userr;
89     /* get root file name */
90     rootname(froot, hdkfile=argv[i++]);
91     /* load... */
92     if (i < argc) { /* variables */
93     loadvars(argv[i++]);
94     /* cmdline settings */
95     for ( ; i < argc; i++)
96     if (setvariable(argv[i], matchvar) < 0) {
97     sprintf(errmsg, "unknown variable: %s",
98     argv[i]);
99     error(USER, errmsg);
100     }
101     /* check settings */
102     checkvalues();
103     /* load RIF if any */
104     if (vdef(RIF))
105     getradfile(vval(RIF));
106     /* set defaults */
107     setdefaults(&hdg);
108     /* holodeck exists? */
109     if (!force && access(hdkfile, R_OK|W_OK) == 0)
110     error(USER,
111     "holodeck file exists -- use -f to overwrite");
112     /* create holodeck */
113     creatholo(&hdg);
114 gregl 3.3 } else { /* else load holodeck */
115 gregl 3.1 loadholo();
116 gregl 3.3 if (vdef(RIF)) /* load RIF if any */
117     getradfile(vval(RIF));
118     }
119 gregl 3.1 /* initialize */
120     initrholo();
121     /* run */
122     while (rholo())
123     ;
124     /* done */
125     quit(0);
126     userr:
127     fprintf(stderr,
128     "Usage: %s {-n nprocs|-o disp} [-w][-f] output.hdk [control.hif [VAR=val ..]]\n",
129     progname);
130     quit(1);
131     }
132    
133    
134 gregl 3.12 onsig(signo) /* fatal signal */
135     int signo;
136     {
137     static int gotsig = 0;
138    
139     if (gotsig++) /* two signals and we're gone! */
140     _exit(signo);
141    
142     alarm(30); /* allow 30 seconds to clean up */
143     signal(SIGALRM, SIG_DFL); /* make certain we do die */
144     eputs("signal - ");
145     eputs(sigerr[signo]);
146     eputs("\n");
147     quit(3);
148     }
149    
150    
151     sigdie(signo, msg) /* set fatal signal */
152     int signo;
153     char *msg;
154     {
155     if (signal(signo, onsig) == SIG_IGN)
156     signal(signo, SIG_IGN);
157     sigerr[signo] = msg;
158     }
159    
160    
161     int
162     resfmode(fd, mod) /* restrict open file access mode */
163     int fd, mod;
164     {
165     struct stat stbuf;
166     /* get original mode */
167     if (fstat(fd, &stbuf) < 0)
168     error(SYSTEM, "cannot stat open holodeck file");
169     mod &= stbuf.st_mode; /* always more restrictive */
170     if (mod == stbuf.st_mode)
171     return(-1); /* already set */
172     /* else change it */
173     if (fchmod(fd, mod) < 0) {
174     error(WARNING, "cannot change holodeck file access mode");
175     return(-1);
176     }
177     return(stbuf.st_mode); /* return original mode */
178     }
179    
180    
181 gregl 3.1 initrholo() /* get our holodeck running */
182     {
183     extern int global_packet();
184     register int i;
185 gregl 3.4
186     if (outdev != NULL) /* open output device */
187     disp_open(outdev);
188 gregl 3.1 else if (ncprocs > 0) /* else use global ray feed */
189     init_global();
190 gregl 3.8 /* record disk space limit */
191     if (!vdef(DISKSPACE))
192     maxdisk = 0;
193     else
194 gregl 3.9 maxdisk = 1024.*1024.*vflt(DISKSPACE);
195 gregl 3.3 /* record end time */
196 gregl 3.1 if (!vdef(TIME) || vflt(TIME) <= FTINY)
197     endtime = 0;
198     else
199     endtime = starttime + vflt(TIME)*3600.;
200     /* set up memory cache */
201 gregl 3.5 if (outdev == NULL)
202     hdcachesize = 0; /* manual flushing */
203     else if (vdef(CACHE))
204     hdcachesize = 1024.*1024.*vflt(CACHE);
205 gregl 3.1 /* open report file */
206     if (vdef(REPORT)) {
207     register char *s = sskip2(vval(REPORT), 1);
208     if (*s && freopen(s, "a", stderr) == NULL)
209     quit(2);
210     }
211     /* start rtrace */
212     if (ncprocs > 0) {
213     i = start_rtrace();
214     if (i < 1)
215     error(USER, "cannot start rtrace process");
216     if (vdef(REPORT)) { /* make first report */
217     printargs(rtargc, rtargv, stderr);
218     report(0);
219     }
220     /* allocate packets */
221     freepacks = (PACKET *)bmalloc(i*sizeof(PACKET));
222     if (freepacks == NULL)
223     goto memerr;
224     freepacks[--i].nr = 0;
225     freepacks[i].next = NULL;
226     if (!vbool(OBSTRUCTIONS)) {
227     freepacks[i].offset = (float *)bmalloc(
228     RPACKSIZ*sizeof(float)*(i+1) );
229     if (freepacks[i].offset == NULL)
230     goto memerr;
231     } else
232     freepacks[i].offset = NULL;
233     while (i--) {
234     freepacks[i].nr = 0;
235     freepacks[i].offset = freepacks[i+1].offset == NULL ?
236     NULL : freepacks[i+1].offset+RPACKSIZ ;
237     freepacks[i].next = &freepacks[i+1];
238     }
239     }
240 gregl 3.12 /* set up signal handling */
241     sigdie(SIGINT, "Interrupt");
242     sigdie(SIGHUP, "Hangup");
243     sigdie(SIGTERM, "Terminate");
244     sigdie(SIGPIPE, "Broken pipe");
245     sigdie(SIGALRM, "Alarm clock");
246     #ifdef SIGXCPU
247     sigdie(SIGXCPU, "CPU limit exceeded");
248     sigdie(SIGXFSZ, "File size exceeded");
249     #endif
250     /* protect holodeck file */
251     orig_mode = resfmode(hdlist[0]->fd, ncprocs>0 ? 0 : 0444);
252 gregl 3.1 return;
253     memerr:
254     error(SYSTEM, "out of memory in initrholo");
255     }
256    
257    
258     rholo() /* holodeck main loop */
259     {
260     static int idle = 1;
261     PACKET *pl = NULL, *plend;
262     register PACKET *p;
263     time_t t;
264     long l;
265 gregl 3.4
266     if (outdev != NULL) /* check display */
267     if (!disp_check(idle))
268     return(0);
269 gregl 3.1 /* display only? */
270     if (ncprocs <= 0)
271     return(1);
272     /* check file size */
273 gregl 3.9 if (maxdisk > 0 && hdfilen(hdlist[0]->fd) >= maxdisk) {
274 gregl 3.8 error(WARNING, "file limit exceeded");
275 gregl 3.1 return(0);
276 gregl 3.8 }
277 gregl 3.1 /* check time */
278 gregl 3.3 if (endtime > 0 || reporttime > 0)
279 gregl 3.1 t = time(NULL);
280 gregl 3.8 if (endtime > 0 && t >= endtime) {
281     error(WARNING, "time limit exceeded");
282 gregl 3.1 return(0);
283 gregl 3.8 }
284 gregl 3.3 if (reporttime > 0 && t >= reporttime)
285 gregl 3.1 report(t);
286     /* get packets to process */
287     while (freepacks != NULL) {
288     p = freepacks; freepacks = p->next; p->next = NULL;
289     if (!next_packet(p)) {
290     p->next = freepacks; freepacks = p;
291     break;
292     }
293     if (pl == NULL) pl = p;
294     else plend->next = p;
295     plend = p;
296     }
297     idle = pl == NULL && freepacks != NULL;
298     /* are we out of stuff to do? */
299     if (idle && outdev == NULL)
300     return(0);
301     /* else process packets */
302     done_packets(do_packets(pl));
303     return(1); /* and continue */
304     }
305    
306    
307     report(t) /* report progress so far */
308     time_t t;
309     {
310     if (t == 0)
311     t = time(NULL);
312 gregl 3.2 fprintf(stderr, "%s: %ld packets (%ld rays) done after %.2f hours\n",
313 gregl 3.1 progname, npacksdone, nraysdone, (t-starttime)/3600.);
314 gregl 3.2 fflush(stderr);
315 gregl 3.3 if (vdef(REPORT))
316     reporttime = t + (time_t)(vflt(REPORT)*60.+.5);
317 gregl 3.1 }
318    
319    
320     setdefaults(gp) /* set default values */
321     register HDGRID *gp;
322     {
323     extern char *atos();
324     register int i;
325     double len[3], maxlen, d;
326     char buf[64];
327    
328     if (!vdef(SECTION)) {
329     sprintf(errmsg, "%s must be defined", vnam(SECTION));
330     error(USER, errmsg);
331     }
332     if (vdef(SECTION) > 1) {
333     sprintf(errmsg, "ignoring all but first %s", vnam(SECTION));
334     error(WARNING, errmsg);
335     }
336     if (sscanf(vval(SECTION),
337     "%lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf",
338     &gp->orig[0], &gp->orig[1], &gp->orig[2],
339     &gp->xv[0][0], &gp->xv[0][1], &gp->xv[0][2],
340     &gp->xv[1][0], &gp->xv[1][1], &gp->xv[1][2],
341     &gp->xv[2][0], &gp->xv[2][1], &gp->xv[2][2]) != 12)
342     badvalue(SECTION);
343     maxlen = 0.;
344     for (i = 0; i < 3; i++)
345     if ((len[i] = VLEN(gp->xv[i])) > maxlen)
346     maxlen = len[i];
347     if (!vdef(GRID)) {
348 gregl 3.2 sprintf(buf, "%.4f", maxlen/8.);
349 gregl 3.1 vval(GRID) = savqstr(buf);
350     vdef(GRID)++;
351     }
352     if ((d = vflt(GRID)) <= FTINY)
353     badvalue(GRID);
354     for (i = 0; i < 3; i++)
355     gp->grid[i] = len[i]/d + (1.-FTINY);
356     if (!vdef(EXPOSURE)) {
357     sprintf(errmsg, "%s must be defined", vnam(EXPOSURE));
358     error(USER, errmsg);
359     }
360     expval = vval(EXPOSURE)[0] == '-' || vval(EXPOSURE)[0] == '+' ?
361     pow(2., vflt(EXPOSURE)) : vflt(EXPOSURE);
362     if (!vdef(OCTREE)) {
363     if ((vval(OCTREE) = bmalloc(strlen(froot)+5)) == NULL)
364     error(SYSTEM, "out of memory");
365     sprintf(vval(OCTREE), "%s.oct", froot);
366     vdef(OCTREE)++;
367     }
368     if (!vdef(OBSTRUCTIONS)) {
369     vval(OBSTRUCTIONS) = "T";
370     vdef(OBSTRUCTIONS)++;
371     }
372     if (!vdef(OCCUPANCY)) {
373     vval(OCCUPANCY) = "U";
374     vdef(OCCUPANCY)++;
375     }
376     /* append rendering options */
377     if (vdef(RENDER))
378     rtargc += wordstring(rtargv+rtargc, vval(RENDER));
379     }
380    
381    
382     creatholo(gp) /* create a holodeck output file */
383     HDGRID *gp;
384     {
385 gregl 3.12 extern char VersionID[];
386 gregl 3.1 long endloc = 0;
387 gregl 3.10 int fd;
388 gregl 3.1 FILE *fp;
389     /* open & truncate file */
390     if ((fp = fopen(hdkfile, "w+")) == NULL) {
391     sprintf(errmsg, "cannot open \"%s\" for writing", hdkfile);
392     error(SYSTEM, errmsg);
393     }
394     /* write information header */
395     newheader("RADIANCE", fp);
396 gregl 3.12 fprintf(fp, "SOFTWARE= %s\n", VersionID);
397 gregl 3.1 printvars(fp);
398     fputformat(HOLOFMT, fp);
399     fputc('\n', fp);
400     putw(HOLOMAGIC, fp); /* put magic number & terminus */
401     fwrite(&endloc, sizeof(long), 1, fp);
402 gregl 3.10 fd = dup(fileno(fp));
403     fclose(fp); /* flush and close stdio stream */
404     hdinit(fd, gp); /* allocate and initialize index */
405 gregl 3.1 }
406    
407    
408     headline(s) /* process information header line */
409     char *s;
410     {
411     extern char FMTSTR[];
412     register char *cp;
413     char fmt[32];
414    
415 gregl 3.2 if (formatval(fmt, s)) {
416 gregl 3.1 if (strcmp(fmt, HOLOFMT)) {
417     sprintf(errmsg, "%s file \"%s\" has %s%s",
418     HOLOFMT, hdkfile, FMTSTR, fmt);
419     error(USER, errmsg);
420     }
421     return;
422     }
423     for (cp = s; *cp; cp++) /* take off any comments */
424     if (*cp == '#') {
425     *cp = '\0';
426     break;
427     }
428     setvariable(s, matchvar); /* don't flag errors */
429     }
430    
431    
432     loadholo() /* start loading a holodeck from fname */
433     {
434 gregl 3.10 extern long ftell();
435 gregl 3.1 FILE *fp;
436 gregl 3.10 int fd;
437     long fpos;
438 gregl 3.4 /* open holodeck file */
439     if ((fp = fopen(hdkfile, ncprocs>0 ? "r+" : "r")) == NULL) {
440     sprintf(errmsg, "cannot open \"%s\" for %s", hdkfile,
441     ncprocs>0 ? "appending" : "reading");
442 gregl 3.1 error(SYSTEM, errmsg);
443     }
444     /* load variables from header */
445     getheader(fp, headline, NULL);
446     /* check magic number */
447     if (getw(fp) != HOLOMAGIC) {
448     sprintf(errmsg, "bad magic number in holodeck file \"%s\"",
449     hdkfile);
450     error(USER, errmsg);
451     }
452 gregl 3.10 fread(&fpos, sizeof(long), 1, fp);
453     if (fpos != 0)
454 gregl 3.1 error(WARNING, "ignoring multiple sections in holodeck file");
455 gregl 3.10 fpos = ftell(fp); /* get stdio position */
456     fd = dup(fileno(fp));
457     fclose(fp); /* done with stdio */
458     lseek(fd, fpos, 0); /* align system file pointer */
459     hdinit(fd, NULL); /* allocate and load index */
460 gregl 3.1 }
461    
462    
463     done_packets(pl) /* handle finished packets */
464     PACKET *pl;
465     {
466 gregl 3.13 static int n2flush = 0;
467 gregl 3.1 register PACKET *p;
468    
469     while (pl != NULL) {
470     p = pl; pl = p->next; p->next = NULL;
471     if (p->nr > 0) { /* add to holodeck */
472     bcopy((char *)p->ra,
473     (char *)hdnewrays(hdlist[p->hd],p->bi,p->nr),
474     p->nr*sizeof(RAYVAL));
475     if (outdev != NULL) /* display it */
476 gregl 3.7 disp_packet((PACKHEAD *)p);
477 gregl 3.13 if (hdcachesize <= 0) /* manual flushing */
478     n2flush += p->nr;
479 gregl 3.6 nraysdone += p->nr;
480     npacksdone++;
481 gregl 3.1 }
482     p->nr = 0; /* push onto free list */
483     p->next = freepacks;
484     freepacks = p;
485 gregl 3.5 }
486 gregl 3.13 if (n2flush > 512*RPACKSIZ*ncprocs) {
487 gregl 3.5 hdflush(NULL); /* flush holodeck buffers */
488 gregl 3.13 n2flush = 0;
489 gregl 3.1 }
490     }
491    
492    
493     getradfile(rfargs) /* run rad and get needed variables */
494     char *rfargs;
495     {
496 gregl 3.9 static short mvar[] = {OCTREE,EXPOSURE,-1};
497 gregl 3.1 static char tf1[] = TEMPLATE;
498     char tf2[64];
499     char combuf[256];
500 gregl 3.3 char *pippt;
501 gregl 3.1 register int i;
502     register char *cp;
503     /* create rad command */
504     mktemp(tf1);
505     sprintf(tf2, "%s.rif", tf1);
506     sprintf(combuf,
507     "rad -v 0 -s -e -w %s OPTFILE=%s | egrep '^[ \t]*(NOMATCH",
508     rfargs, tf1);
509     cp = combuf;
510 gregl 3.3 while (*cp){
511     if (*cp == '|') pippt = cp;
512     cp++;
513     } /* match unset variables */
514 gregl 3.1 for (i = 0; mvar[i] >= 0; i++)
515     if (!vdef(mvar[i])) {
516     *cp++ = '|';
517     strcpy(cp, vnam(mvar[i]));
518     while (*cp) cp++;
519 gregl 3.3 pippt = NULL;
520 gregl 3.1 }
521 gregl 3.3 if (pippt != NULL)
522     strcpy(pippt, "> /dev/null"); /* nothing to match */
523     else
524     sprintf(cp, ")[ \t]*=' > %s", tf2);
525 gregl 3.1 if (system(combuf)) {
526     error(SYSTEM, "cannot execute rad command");
527     unlink(tf2); /* clean up */
528     unlink(tf1);
529     quit(1);
530     }
531 gregl 3.3 if (pippt == NULL) {
532     loadvars(tf2); /* load variables */
533     unlink(tf2);
534     }
535 gregl 3.1 rtargc += wordfile(rtargv+rtargc, tf1); /* get rtrace options */
536 gregl 3.3 unlink(tf1); /* clean up */
537 gregl 3.1 }
538    
539    
540     rootname(rn, fn) /* remove tail from end of fn */
541     register char *rn, *fn;
542     {
543     char *tp, *dp;
544    
545     for (tp = NULL, dp = rn; *rn = *fn++; rn++)
546     if (ISDIRSEP(*rn))
547     dp = rn;
548     else if (*rn == '.')
549     tp = rn;
550     if (tp != NULL && tp > dp)
551     *tp = '\0';
552     }
553    
554    
555     badvalue(vc) /* report bad variable value and exit */
556     int vc;
557     {
558     sprintf(errmsg, "bad value for variable '%s'", vnam(vc));
559     error(USER, errmsg);
560     }
561    
562    
563     eputs(s) /* put error message to stderr */
564     register char *s;
565     {
566     static int midline = 0;
567    
568     if (!*s)
569     return;
570     if (!midline++) { /* prepend line with program name */
571     fputs(progname, stderr);
572     fputs(": ", stderr);
573     }
574     fputs(s, stderr);
575     if (s[strlen(s)-1] == '\n') {
576     fflush(stderr);
577     midline = 0;
578     }
579     }
580    
581    
582     wputs(s) /* put warning string to stderr */
583     char *s;
584     {
585     if (!nowarn)
586     eputs(s);
587     }
588    
589    
590     quit(ec) /* exit program gracefully */
591     int ec;
592     {
593     int status = 0;
594    
595     if (hdlist[0] != NULL) { /* flush holodeck */
596     if (ncprocs > 0) {
597     done_packets(flush_queue());
598     status = end_rtrace(); /* close rtrace */
599     hdflush(NULL);
600     if (vdef(REPORT)) {
601     long fsiz, fuse;
602     report(0);
603 gregl 3.9 fsiz = hdfilen(hdlist[0]->fd);
604 gregl 3.1 fuse = hdfiluse(hdlist[0]->fd, 1);
605     fprintf(stderr,
606 gregl 3.3 "%s: %.1f Mbyte holodeck file, %.1f%% fragmentation\n",
607 gregl 3.1 hdkfile, fsiz/(1024.*1024.),
608     100.*(fsiz-fuse)/fsiz);
609     }
610     } else
611     hdflush(NULL);
612     }
613 gregl 3.12 if (orig_mode >= 0) /* reset holodeck access mode */
614     fchmod(hdlist[0]->fd, orig_mode);
615 gregl 3.11 if (outdev != NULL) /* close display */
616     disp_close();
617 gregl 3.1 exit(ec ? ec : status); /* exit */
618     }