| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: rholo.c,v 3.63 2003/10/22 02:06:34 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* Radiance holodeck generation controller |
| 6 |
*/ |
| 7 |
|
| 8 |
#include <stdio.h> |
| 9 |
#include <time.h> |
| 10 |
#include <signal.h> |
| 11 |
#include <sys/stat.h> |
| 12 |
#include <string.h> |
| 13 |
|
| 14 |
#include "platform.h" |
| 15 |
#include "rterror.h" |
| 16 |
#include "resolu.h" |
| 17 |
#include "rholo.h" |
| 18 |
#include "random.h" |
| 19 |
|
| 20 |
#ifndef FRAGWARN |
| 21 |
#define FRAGWARN 20 /* fragmentation for warning (%) */ |
| 22 |
#endif |
| 23 |
#ifndef MAXQTIME |
| 24 |
#define MAXQTIME 5 /* target maximum seconds in queue */ |
| 25 |
#endif |
| 26 |
/* manual cache flushing frequency */ |
| 27 |
#ifndef RTFLUSH |
| 28 |
#if MAXQTIME |
| 29 |
#define RTFLUSH (300/MAXQTIME*totqlen) /* <= 5 minutes */ |
| 30 |
#else |
| 31 |
#define RTFLUSH (50*totqlen) /* just guess */ |
| 32 |
#endif |
| 33 |
#endif |
| 34 |
/* the following must be consistent with rholo.h */ |
| 35 |
int NVARS = NRHVARS; /* total number of variables */ |
| 36 |
|
| 37 |
VARIABLE vv[] = RHVINIT; /* variable-value pairs */ |
| 38 |
|
| 39 |
char *progname; /* our program name */ |
| 40 |
char *hdkfile; /* holodeck file name */ |
| 41 |
char froot[256]; /* root file name */ |
| 42 |
|
| 43 |
int ncprocs = 0; /* desired number of compute processes */ |
| 44 |
|
| 45 |
char *outdev = NULL; /* output device name */ |
| 46 |
|
| 47 |
int readinp = 0; /* read commands from stdin */ |
| 48 |
|
| 49 |
int force = 0; /* allow overwrite of holodeck (-1 == read-only) */ |
| 50 |
|
| 51 |
time_t starttime; /* time we got started */ |
| 52 |
time_t endtime; /* time we should end by */ |
| 53 |
time_t reporttime; /* time for next report */ |
| 54 |
|
| 55 |
off_t maxdisk; /* maximum file space (bytes) */ |
| 56 |
|
| 57 |
int rtargc = 1; /* rtrace command */ |
| 58 |
char *rtargv[128] = {"rtrace", NULL}; |
| 59 |
|
| 60 |
int orig_mode = -1; /* original file mode (-1 if unchanged) */ |
| 61 |
|
| 62 |
long nraysdone = 0L; /* number of rays done */ |
| 63 |
long npacksdone = 0L; /* number of packets done */ |
| 64 |
|
| 65 |
PACKET *freepacks; /* available packets */ |
| 66 |
int totqlen; /* maximum queue length (number of packets) */ |
| 67 |
|
| 68 |
char *sigerr[NSIG]; /* signal error messages */ |
| 69 |
|
| 70 |
extern int nowarn; /* turn warnings off? */ |
| 71 |
|
| 72 |
static void onsig(int signo); |
| 73 |
static void sigdie(int signo, char *msg); |
| 74 |
static int resfmode(int fd, int mod); |
| 75 |
static void initrholo(void); |
| 76 |
static int rholo(void); |
| 77 |
static void setdefaults(HDGRID *gp); |
| 78 |
static void creatholo(HDGRID *gp); |
| 79 |
static int headline(char *s); |
| 80 |
static void loadholo(void); |
| 81 |
static void rootname(char *rn, char *fn); |
| 82 |
static void badvalue(int vc); |
| 83 |
|
| 84 |
|
| 85 |
int |
| 86 |
main( |
| 87 |
int argc, |
| 88 |
char *argv[] |
| 89 |
) |
| 90 |
{ |
| 91 |
int i; |
| 92 |
|
| 93 |
initurand(16384); /* initialize urand */ |
| 94 |
progname = argv[0]; /* get arguments */ |
| 95 |
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
| 96 |
switch (argv[i][1]) { |
| 97 |
case 'w': /* turn off warnings */ |
| 98 |
nowarn++; |
| 99 |
break; |
| 100 |
case 'f': /* force overwrite */ |
| 101 |
force = 1; |
| 102 |
break; |
| 103 |
case 'r': /* read-only mode */ |
| 104 |
force = -1; |
| 105 |
break; |
| 106 |
case 'i': /* read input from stdin */ |
| 107 |
readinp++; |
| 108 |
break; |
| 109 |
case 'n': /* compute processes */ |
| 110 |
if (i >= argc-2) |
| 111 |
goto userr; |
| 112 |
ncprocs = atoi(argv[++i]); |
| 113 |
break; |
| 114 |
case 'o': /* output display */ |
| 115 |
if (i >= argc-2) |
| 116 |
goto userr; |
| 117 |
outdev = argv[++i]; |
| 118 |
break; |
| 119 |
default: |
| 120 |
goto userr; |
| 121 |
} |
| 122 |
/* get root file name */ |
| 123 |
if (i >= argc) |
| 124 |
goto userr; |
| 125 |
rootname(froot, hdkfile=argv[i++]); |
| 126 |
/* load variables? */ |
| 127 |
if (i < argc) |
| 128 |
if (argv[i][0] != '-' && argv[i][0] != '+') |
| 129 |
loadvars(argv[i]); /* load variables from file */ |
| 130 |
|
| 131 |
if (i >= argc || argv[i][0] == '+') |
| 132 |
loadholo(); /* load existing holodeck */ |
| 133 |
|
| 134 |
while (++i < argc) /* get command line settings */ |
| 135 |
if (setvariable(argv[i], matchvar) < 0) { |
| 136 |
sprintf(errmsg, "unknown variable: %s", argv[i]); |
| 137 |
error(USER, errmsg); |
| 138 |
} |
| 139 |
/* check settings */ |
| 140 |
checkvalues(); |
| 141 |
/* load rad input file */ |
| 142 |
getradfile(); |
| 143 |
|
| 144 |
if (hdlist[0] == NULL) { /* create new holodeck */ |
| 145 |
HDGRID hdg[HDMAX]; |
| 146 |
/* set defaults */ |
| 147 |
setdefaults(hdg); |
| 148 |
/* check read-only */ |
| 149 |
if (force < 0) |
| 150 |
error(USER, "cannot create read-only holodeck"); |
| 151 |
/* holodeck exists? */ |
| 152 |
if (!force && access(hdkfile, R_OK|W_OK) == 0) |
| 153 |
error(USER, |
| 154 |
"holodeck file exists -- use -f to overwrite"); |
| 155 |
/* create holodeck */ |
| 156 |
creatholo(hdg); |
| 157 |
} else /* else just set defaults */ |
| 158 |
setdefaults(NULL); |
| 159 |
/* initialize */ |
| 160 |
initrholo(); |
| 161 |
/* main loop */ |
| 162 |
while (rholo()) |
| 163 |
; |
| 164 |
/* done */ |
| 165 |
quit(0); |
| 166 |
userr: |
| 167 |
fprintf(stderr, |
| 168 |
"Usage: %s [-n nprocs][-o disp][-w][-r|-f] output.hdk [control.hif|+|- [VAR=val ..]]\n", |
| 169 |
progname); |
| 170 |
quit(1); |
| 171 |
return 1; /* pro forma return */ |
| 172 |
} |
| 173 |
|
| 174 |
|
| 175 |
static void |
| 176 |
onsig( /* fatal signal */ |
| 177 |
int signo |
| 178 |
) |
| 179 |
{ |
| 180 |
static int gotsig = 0; |
| 181 |
|
| 182 |
if (gotsig > 1) /* we're going as fast as we can! */ |
| 183 |
return; |
| 184 |
if (gotsig++) { /* two signals and we split */ |
| 185 |
hdsync(NULL, 0); /* don't leave w/o saying goodbye */ |
| 186 |
_exit(signo); |
| 187 |
} |
| 188 |
alarm(300); /* allow 5 minutes to clean up */ |
| 189 |
eputs("signal - "); |
| 190 |
eputs(sigerr[signo]); |
| 191 |
eputs("\n"); |
| 192 |
quit(3); |
| 193 |
} |
| 194 |
|
| 195 |
|
| 196 |
static void |
| 197 |
sigdie( /* set fatal signal */ |
| 198 |
int signo, |
| 199 |
char *msg |
| 200 |
) |
| 201 |
{ |
| 202 |
if (signal(signo, onsig) == SIG_IGN) |
| 203 |
signal(signo, SIG_IGN); |
| 204 |
sigerr[signo] = msg; |
| 205 |
} |
| 206 |
|
| 207 |
|
| 208 |
static int |
| 209 |
resfmode( /* restrict open file access mode */ |
| 210 |
int fd, |
| 211 |
int mod |
| 212 |
) |
| 213 |
{ |
| 214 |
struct stat stbuf; |
| 215 |
/* get original mode */ |
| 216 |
if (fstat(fd, &stbuf) < 0) |
| 217 |
error(SYSTEM, "cannot stat open holodeck file"); |
| 218 |
mod &= stbuf.st_mode; /* always more restrictive */ |
| 219 |
if (mod == (stbuf.st_mode & 0777)) |
| 220 |
return(-1); /* already set */ |
| 221 |
/* else change it */ |
| 222 |
if (fchmod(fd, mod) < 0) { |
| 223 |
error(WARNING, "cannot change holodeck file access mode"); |
| 224 |
return(-1); |
| 225 |
} |
| 226 |
return(stbuf.st_mode); /* return original mode */ |
| 227 |
} |
| 228 |
|
| 229 |
|
| 230 |
static void |
| 231 |
initrholo(void) /* get our holodeck running */ |
| 232 |
{ |
| 233 |
extern int global_packet(); |
| 234 |
register int i; |
| 235 |
/* close holodeck on exec() */ |
| 236 |
fcntl(hdlist[0]->fd, F_SETFD, FD_CLOEXEC); |
| 237 |
|
| 238 |
if (outdev != NULL) /* open output device */ |
| 239 |
disp_open(outdev); |
| 240 |
else if (ncprocs > 0) /* else use global ray feed */ |
| 241 |
init_global(); |
| 242 |
/* record disk space limit */ |
| 243 |
if (!vdef(DISKSPACE)) |
| 244 |
maxdisk = ((off_t)1<<(sizeof(off_t)*8-2)) - 1024; |
| 245 |
else |
| 246 |
maxdisk = 1024.*1024.*vflt(DISKSPACE); |
| 247 |
/* set up memory cache */ |
| 248 |
if (outdev == NULL) |
| 249 |
hdcachesize = 0; /* manual flushing */ |
| 250 |
else if (vdef(CACHE)) |
| 251 |
hdcachesize = 1024.*1024.*vflt(CACHE); |
| 252 |
/* open report file */ |
| 253 |
if (vdef(REPORT)) { |
| 254 |
register char *s = sskip2(vval(REPORT), 1); |
| 255 |
if (*s && freopen(s, "a", stderr) == NULL) |
| 256 |
quit(2); |
| 257 |
} |
| 258 |
/* mark the starting time */ |
| 259 |
starttime = time(NULL); |
| 260 |
/* compute end time */ |
| 261 |
if (!vdef(TIME) || vflt(TIME) <= FTINY) |
| 262 |
endtime = 0; |
| 263 |
else |
| 264 |
endtime = starttime + vflt(TIME)*3600. + .5; |
| 265 |
/* start rtrace */ |
| 266 |
if (ncprocs > 0) { |
| 267 |
totqlen = i = start_rtrace(); |
| 268 |
if (i < 1) |
| 269 |
error(USER, "cannot start rtrace process(es)"); |
| 270 |
if (vdef(REPORT)) { /* make first report */ |
| 271 |
printargs(rtargc, rtargv, stderr); |
| 272 |
report(0); |
| 273 |
} |
| 274 |
/* allocate packets */ |
| 275 |
freepacks = (PACKET *)bmalloc(i*sizeof(PACKET)); |
| 276 |
if (freepacks == NULL) |
| 277 |
goto memerr; |
| 278 |
freepacks[--i].nr = 0; |
| 279 |
freepacks[i].next = NULL; |
| 280 |
if (!vdef(OBSTRUCTIONS) || !vbool(OBSTRUCTIONS)) { |
| 281 |
freepacks[i].offset = (float *)bmalloc( |
| 282 |
RPACKSIZ*sizeof(float)*(i+1) ); |
| 283 |
if (freepacks[i].offset == NULL) |
| 284 |
goto memerr; |
| 285 |
} else |
| 286 |
freepacks[i].offset = NULL; |
| 287 |
while (i--) { |
| 288 |
freepacks[i].nr = 0; |
| 289 |
freepacks[i].offset = freepacks[i+1].offset == NULL ? |
| 290 |
NULL : freepacks[i+1].offset+RPACKSIZ ; |
| 291 |
freepacks[i].next = &freepacks[i+1]; |
| 292 |
} |
| 293 |
} |
| 294 |
/* set up signal handling */ |
| 295 |
sigdie(SIGINT, "Interrupt"); |
| 296 |
sigdie(SIGTERM, "Terminate"); |
| 297 |
#ifdef SIGHUP |
| 298 |
sigdie(SIGHUP, "Hangup"); |
| 299 |
#endif |
| 300 |
#ifdef SIGPIPE |
| 301 |
sigdie(SIGPIPE, "Broken pipe"); |
| 302 |
#endif |
| 303 |
#ifdef SIGALRM |
| 304 |
sigdie(SIGALRM, "Alarm clock"); |
| 305 |
#endif |
| 306 |
#ifdef SIGXCPU |
| 307 |
sigdie(SIGXCPU, "CPU limit exceeded"); |
| 308 |
#endif |
| 309 |
#ifdef SIGXFSZ |
| 310 |
sigdie(SIGXFSZ, "File size exceeded"); |
| 311 |
#endif |
| 312 |
/* protect holodeck file */ |
| 313 |
orig_mode = resfmode(hdlist[0]->fd, (ncprocs>0) & (force>=0) ? 0 : 0444); |
| 314 |
return; |
| 315 |
memerr: |
| 316 |
error(SYSTEM, "out of memory in initrholo"); |
| 317 |
} |
| 318 |
|
| 319 |
|
| 320 |
static int |
| 321 |
rholo(void) /* holodeck main loop */ |
| 322 |
{ |
| 323 |
static long nextfragwarn = 100*(1L<<20); |
| 324 |
static int idle = 0; |
| 325 |
PACKET *pl = NULL, *plend; |
| 326 |
off_t fsiz; |
| 327 |
int pksiz; |
| 328 |
register PACKET *p; |
| 329 |
time_t t; |
| 330 |
/* check display */ |
| 331 |
if (nprocs <= 0) |
| 332 |
idle = 1; |
| 333 |
if (outdev != NULL) { |
| 334 |
if (!disp_check(idle)) |
| 335 |
return(0); /* quit request */ |
| 336 |
if (nprocs <= 0) |
| 337 |
return(1); |
| 338 |
} else if (idle) |
| 339 |
return(0); /* all done */ |
| 340 |
fsiz = hdfilen(hdlist[0]->fd); /* check file size */ |
| 341 |
if (maxdisk > 0 && fsiz >= maxdisk) { |
| 342 |
error(WARNING, "file limit exceeded"); |
| 343 |
done_rtrace(); |
| 344 |
return(1); /* comes back */ |
| 345 |
} |
| 346 |
#if FRAGWARN |
| 347 |
if (fsiz >= nextfragwarn && |
| 348 |
(fsiz-hdfiluse(hdlist[0]->fd,0))/(fsiz/100) > FRAGWARN) { |
| 349 |
sprintf(errmsg, "holodeck file fragmentation is %.0f%%", |
| 350 |
100.*(fsiz-hdfiluse(hdlist[0]->fd,1))/fsiz); |
| 351 |
error(WARNING, errmsg); |
| 352 |
nextfragwarn = fsiz + (fsiz>>2); /* decent interval */ |
| 353 |
} |
| 354 |
#endif |
| 355 |
t = time(NULL); /* check time */ |
| 356 |
if (endtime > 0 && t >= endtime) { |
| 357 |
error(WARNING, "time limit exceeded"); |
| 358 |
done_rtrace(); |
| 359 |
return(1); /* comes back */ |
| 360 |
} |
| 361 |
if (reporttime > 0 && t >= reporttime) |
| 362 |
report(t); |
| 363 |
/* figure out good packet size */ |
| 364 |
pksiz = RPACKSIZ; |
| 365 |
#if MAXQTIME |
| 366 |
if (!chunkycmp) { |
| 367 |
pksiz = nraysdone*MAXQTIME/(totqlen*(t - starttime + 1L)); |
| 368 |
if (pksiz < 1) pksiz = 1; |
| 369 |
else if (pksiz > RPACKSIZ) pksiz = RPACKSIZ; |
| 370 |
} |
| 371 |
#endif |
| 372 |
idle = 0; /* get packets to process */ |
| 373 |
while (freepacks != NULL) { |
| 374 |
p = freepacks; freepacks = p->next; p->next = NULL; |
| 375 |
if (!next_packet(p, pksiz)) { |
| 376 |
p->next = freepacks; freepacks = p; |
| 377 |
idle = 1; |
| 378 |
break; |
| 379 |
} |
| 380 |
if (pl == NULL) pl = p; |
| 381 |
else plend->next = p; |
| 382 |
plend = p; |
| 383 |
} |
| 384 |
/* process packets */ |
| 385 |
done_packets(do_packets(pl)); |
| 386 |
return(1); /* and continue */ |
| 387 |
} |
| 388 |
|
| 389 |
|
| 390 |
static void |
| 391 |
setdefaults( /* set default values */ |
| 392 |
register HDGRID *gp |
| 393 |
) |
| 394 |
{ |
| 395 |
extern char *atos(); |
| 396 |
register int i; |
| 397 |
int n; |
| 398 |
double len[3], d; |
| 399 |
|
| 400 |
if (!vdef(SECTION)) { |
| 401 |
sprintf(errmsg, "%s must be defined", vnam(SECTION)); |
| 402 |
error(USER, errmsg); |
| 403 |
} |
| 404 |
if (!vdef(OCTREE)) { |
| 405 |
if ((vval(OCTREE) = bmalloc(strlen(froot)+5)) == NULL) |
| 406 |
error(SYSTEM, "out of memory"); |
| 407 |
sprintf(vval(OCTREE), "%s.oct", froot); |
| 408 |
vdef(OCTREE)++; |
| 409 |
} |
| 410 |
if (!vdef(VDIST)) { |
| 411 |
vval(VDIST) = "F"; |
| 412 |
vdef(VDIST)++; |
| 413 |
} |
| 414 |
/* append rendering options */ |
| 415 |
if (vdef(RENDER)) |
| 416 |
rtargc += wordstring(rtargv+rtargc, vval(RENDER)); |
| 417 |
|
| 418 |
if (gp == NULL) /* already initialized? */ |
| 419 |
return; |
| 420 |
/* set grid parameters */ |
| 421 |
for (n = 0; n < vdef(SECTION); n++, gp++) { |
| 422 |
gp->grid[0] = gp->grid[1] = gp->grid[2] = 0; |
| 423 |
if (sscanf(nvalue(SECTION, n), |
| 424 |
"%lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %hd %hd %hd", |
| 425 |
&gp->orig[0], &gp->orig[1], &gp->orig[2], |
| 426 |
&gp->xv[0][0], &gp->xv[0][1], &gp->xv[0][2], |
| 427 |
&gp->xv[1][0], &gp->xv[1][1], &gp->xv[1][2], |
| 428 |
&gp->xv[2][0], &gp->xv[2][1], &gp->xv[2][2], |
| 429 |
&gp->grid[0], &gp->grid[1], &gp->grid[2]) < 12) |
| 430 |
badvalue(SECTION); |
| 431 |
for (i = 0; i < 3; i++) |
| 432 |
len[i] = VLEN(gp->xv[i]); |
| 433 |
if (!vdef(GRID)) { |
| 434 |
d = 2/2e5*( len[0]*len[0]*(len[1]*len[1] + |
| 435 |
len[2]*len[2] + 4*len[1]*len[2]) |
| 436 |
+ len[1]*len[1]*len[2]*(len[2] + 4*len[0]) |
| 437 |
+ 4*len[0]*len[1]*len[2]*len[2] ); |
| 438 |
d = sqrt(sqrt(d)); |
| 439 |
} else if ((d = vflt(GRID)) <= FTINY) |
| 440 |
badvalue(GRID); |
| 441 |
for (i = 0; i < 3; i++) |
| 442 |
if (gp->grid[i] <= 0) |
| 443 |
gp->grid[i] = len[i]/d + (1.-FTINY); |
| 444 |
} |
| 445 |
} |
| 446 |
|
| 447 |
|
| 448 |
static void |
| 449 |
creatholo( /* create a holodeck output file */ |
| 450 |
HDGRID *gp |
| 451 |
) |
| 452 |
{ |
| 453 |
extern char VersionID[]; |
| 454 |
int32 lastloc, nextloc; |
| 455 |
int n; |
| 456 |
int fd; |
| 457 |
FILE *fp; |
| 458 |
/* open & truncate file */ |
| 459 |
if ((fp = fopen(hdkfile, "w+")) == NULL) { |
| 460 |
sprintf(errmsg, "cannot open \"%s\" for writing", hdkfile); |
| 461 |
error(SYSTEM, errmsg); |
| 462 |
} |
| 463 |
/* write information header */ |
| 464 |
newheader("RADIANCE", fp); |
| 465 |
fprintf(fp, "SOFTWARE= %s\n", VersionID); |
| 466 |
printvars(fp); |
| 467 |
fputformat(HOLOFMT, fp); |
| 468 |
fputc('\n', fp); |
| 469 |
putw(HOLOMAGIC, fp); /* put magic number */ |
| 470 |
fd = dup(fileno(fp)); |
| 471 |
fclose(fp); /* flush and close stdio stream */ |
| 472 |
lastloc = lseek(fd, (off_t)0, SEEK_END); |
| 473 |
for (n = vdef(SECTION); n--; gp++) { /* initialize each section */ |
| 474 |
nextloc = 0L; |
| 475 |
write(fd, (char *)&nextloc, sizeof(nextloc)); |
| 476 |
hdinit(fd, gp); /* writes beam index */ |
| 477 |
if (!n) |
| 478 |
break; |
| 479 |
nextloc = hdfilen(fd); /* write section pointer */ |
| 480 |
if (lseek(fd, (off_t)lastloc, SEEK_SET) < 0) |
| 481 |
error(SYSTEM, |
| 482 |
"cannot seek on holodeck file in creatholo"); |
| 483 |
write(fd, (char *)&nextloc, sizeof(nextloc)); |
| 484 |
lseek(fd, (off_t)(lastloc=nextloc), SEEK_SET); |
| 485 |
} |
| 486 |
} |
| 487 |
|
| 488 |
|
| 489 |
static int |
| 490 |
headline( /* process information header line */ |
| 491 |
char *s |
| 492 |
) |
| 493 |
{ |
| 494 |
extern char FMTSTR[]; |
| 495 |
register char *cp; |
| 496 |
char fmt[32]; |
| 497 |
|
| 498 |
if (formatval(fmt, s)) { |
| 499 |
if (strcmp(fmt, HOLOFMT)) { |
| 500 |
sprintf(errmsg, "%s file \"%s\" has %s%s", |
| 501 |
HOLOFMT, hdkfile, FMTSTR, fmt); |
| 502 |
error(USER, errmsg); |
| 503 |
} |
| 504 |
return(0); |
| 505 |
} |
| 506 |
for (cp = s; *cp; cp++) /* take off any comments */ |
| 507 |
if (*cp == '#') { |
| 508 |
*cp = '\0'; |
| 509 |
break; |
| 510 |
} |
| 511 |
setvariable(s, matchvar); /* don't flag errors */ |
| 512 |
return(0); |
| 513 |
} |
| 514 |
|
| 515 |
|
| 516 |
static void |
| 517 |
loadholo(void) /* start loading a holodeck from fname */ |
| 518 |
{ |
| 519 |
FILE *fp; |
| 520 |
int fd; |
| 521 |
int n; |
| 522 |
int32 nextloc; |
| 523 |
|
| 524 |
if ((ncprocs > 0) & (force >= 0)) |
| 525 |
fp = fopen(hdkfile, "r+"); |
| 526 |
else |
| 527 |
fp = NULL; |
| 528 |
if (fp == NULL) { |
| 529 |
if ((fp = fopen(hdkfile, "r")) == NULL) { |
| 530 |
sprintf(errmsg, "cannot open \"%s\"", hdkfile); |
| 531 |
error(SYSTEM, errmsg); |
| 532 |
} |
| 533 |
if (ncprocs > 0) { |
| 534 |
sprintf(errmsg, |
| 535 |
"\"%s\" opened read-only; new rays will be discarded", |
| 536 |
hdkfile); |
| 537 |
error(WARNING, errmsg); |
| 538 |
force = -1; |
| 539 |
} |
| 540 |
} |
| 541 |
/* load variables from header */ |
| 542 |
getheader(fp, headline, NULL); |
| 543 |
/* check magic number */ |
| 544 |
if (getw(fp) != HOLOMAGIC) { |
| 545 |
sprintf(errmsg, "bad magic number in holodeck file \"%s\"", |
| 546 |
hdkfile); |
| 547 |
error(USER, errmsg); |
| 548 |
} |
| 549 |
nextloc = ftell(fp); /* get stdio position */ |
| 550 |
fd = dup(fileno(fp)); |
| 551 |
fclose(fp); /* done with stdio */ |
| 552 |
for (n = 0; nextloc > 0L; n++) { /* initialize each section */ |
| 553 |
lseek(fd, (off_t)nextloc, SEEK_SET); |
| 554 |
read(fd, (char *)&nextloc, sizeof(nextloc)); |
| 555 |
hdinit(fd, NULL); |
| 556 |
} |
| 557 |
if (n != vdef(SECTION)) { |
| 558 |
sprintf(errmsg, "number of sections does not match %s setting", |
| 559 |
vnam(SECTION)); |
| 560 |
error(WARNING, errmsg); |
| 561 |
} |
| 562 |
} |
| 563 |
|
| 564 |
|
| 565 |
extern void |
| 566 |
done_packets( /* handle finished packets */ |
| 567 |
PACKET *pl |
| 568 |
) |
| 569 |
{ |
| 570 |
static int n2flush = 0; |
| 571 |
register PACKET *p; |
| 572 |
|
| 573 |
while (pl != NULL) { |
| 574 |
p = pl; pl = p->next; p->next = NULL; |
| 575 |
if (p->nr > 0) { /* add to holodeck */ |
| 576 |
memcpy( (void *)hdnewrays(hdlist[p->hd],p->bi,p->nr), |
| 577 |
(void *)p->ra, |
| 578 |
p->nr*sizeof(RAYVAL)); |
| 579 |
if (outdev != NULL) /* display it */ |
| 580 |
disp_packet((PACKHEAD *)p); |
| 581 |
if (hdcachesize <= 0) |
| 582 |
n2flush++; |
| 583 |
nraysdone += p->nr; |
| 584 |
npacksdone++; |
| 585 |
p->nr = 0; |
| 586 |
} |
| 587 |
p->next = freepacks; /* push onto free list */ |
| 588 |
freepacks = p; |
| 589 |
} |
| 590 |
if (n2flush >= RTFLUSH) { |
| 591 |
if (outdev != NULL) |
| 592 |
hdsync(NULL, 1); |
| 593 |
else |
| 594 |
hdflush(NULL); |
| 595 |
n2flush = 0; |
| 596 |
} |
| 597 |
} |
| 598 |
|
| 599 |
|
| 600 |
static void |
| 601 |
rootname( /* remove tail from end of fn */ |
| 602 |
register char *rn, |
| 603 |
register char *fn |
| 604 |
) |
| 605 |
{ |
| 606 |
char *tp, *dp; |
| 607 |
|
| 608 |
for (tp = NULL, dp = rn; (*rn = *fn++); rn++) { |
| 609 |
if (*rn == '/') |
| 610 |
dp = rn; |
| 611 |
else if (*rn == '.') |
| 612 |
tp = rn; |
| 613 |
} |
| 614 |
if (tp != NULL && tp > dp) |
| 615 |
*tp = '\0'; |
| 616 |
} |
| 617 |
|
| 618 |
|
| 619 |
static void |
| 620 |
badvalue( /* report bad variable value and exit */ |
| 621 |
int vc |
| 622 |
) |
| 623 |
{ |
| 624 |
sprintf(errmsg, "bad value for variable '%s'", vnam(vc)); |
| 625 |
error(USER, errmsg); |
| 626 |
} |
| 627 |
|
| 628 |
|
| 629 |
void |
| 630 |
eputs(s) /* put error message to stderr */ |
| 631 |
register char *s; |
| 632 |
{ |
| 633 |
static int midline = 0; |
| 634 |
|
| 635 |
if (!*s) |
| 636 |
return; |
| 637 |
if (!midline++) { /* prepend line with program name */ |
| 638 |
fputs(progname, stderr); |
| 639 |
fputs(": ", stderr); |
| 640 |
} |
| 641 |
fputs(s, stderr); |
| 642 |
if (s[strlen(s)-1] == '\n') { |
| 643 |
fflush(stderr); |
| 644 |
midline = 0; |
| 645 |
} |
| 646 |
} |
| 647 |
|
| 648 |
|
| 649 |
void |
| 650 |
quit(ec) /* exit program gracefully */ |
| 651 |
int ec; |
| 652 |
{ |
| 653 |
int status = 0; |
| 654 |
|
| 655 |
if (hdlist[0] != NULL) { /* close holodeck */ |
| 656 |
if (nprocs > 0) |
| 657 |
status = done_rtrace(); /* calls hdsync() */ |
| 658 |
if ((ncprocs > 0) & (force >= 0) && vdef(REPORT)) { |
| 659 |
off_t fsiz, fuse; |
| 660 |
fsiz = hdfilen(hdlist[0]->fd); |
| 661 |
fuse = hdfiluse(hdlist[0]->fd, 1); |
| 662 |
fprintf(stderr, |
| 663 |
"%s: %.1f Mbyte holodeck file, %.1f%% fragmentation\n", |
| 664 |
hdkfile, fsiz/(1024.*1024.), |
| 665 |
100.*(fsiz-fuse)/fsiz); |
| 666 |
} |
| 667 |
} |
| 668 |
if (orig_mode >= 0) /* reset holodeck access mode */ |
| 669 |
fchmod(hdlist[0]->fd, orig_mode); |
| 670 |
if (outdev != NULL) /* close display */ |
| 671 |
disp_close(); |
| 672 |
exit(ec ? ec : status); /* exit */ |
| 673 |
} |
