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 "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 nowarn = 0; /* turn warnings off? */ |
30 |
|
31 |
int ncprocs = 0; /* desired number of compute processes */ |
32 |
|
33 |
char *outdev = NULL; /* output device name */ |
34 |
|
35 |
int readinp = 0; /* read commands from stdin */ |
36 |
|
37 |
int force = 0; /* allow overwrite of holodeck */ |
38 |
|
39 |
time_t starttime; /* time we got started */ |
40 |
time_t endtime; /* time we should end by */ |
41 |
time_t reporttime; /* time for next report */ |
42 |
|
43 |
long maxdisk; /* maximum file space (bytes) */ |
44 |
|
45 |
int rtargc = 1; /* rtrace command */ |
46 |
char *rtargv[128] = {"rtrace", NULL}; |
47 |
|
48 |
int orig_mode = -1; /* original file mode (-1 if unchanged) */ |
49 |
|
50 |
long nraysdone = 0L; /* number of rays done */ |
51 |
long npacksdone = 0L; /* number of packets done */ |
52 |
|
53 |
PACKET *freepacks; /* available packets */ |
54 |
int avgqlen; /* average queue length when full */ |
55 |
|
56 |
char *sigerr[NSIG]; /* signal error messages */ |
57 |
|
58 |
extern time_t time(); |
59 |
|
60 |
|
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main(argc, argv) |
62 |
int argc; |
63 |
char *argv[]; |
64 |
{ |
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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 */ |
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nowarn++; |
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break; |
74 |
case 'f': /* force overwrite */ |
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force++; |
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break; |
77 |
case 'i': /* read input from stdin */ |
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readinp++; |
79 |
break; |
80 |
case 'n': /* compute processes */ |
81 |
if (i >= argc-2) |
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goto userr; |
83 |
ncprocs = atoi(argv[++i]); |
84 |
break; |
85 |
case 'o': /* output display */ |
86 |
if (i >= argc-2) |
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goto userr; |
88 |
outdev = argv[++i]; |
89 |
break; |
90 |
default: |
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goto userr; |
92 |
} |
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/* get root file name */ |
94 |
if (i >= argc) |
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goto userr; |
96 |
rootname(froot, hdkfile=argv[i++]); |
97 |
/* load variables? */ |
98 |
if (i < argc) |
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if (argv[i][0] != '-' && argv[i][0] != '+') |
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loadvars(argv[i]); /* load variables from file */ |
101 |
|
102 |
if (i >= argc || argv[i][0] == '+') |
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loadholo(); /* load existing holodeck */ |
104 |
|
105 |
while (++i < argc) /* get command line settings */ |
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if (setvariable(argv[i], matchvar) < 0) { |
107 |
sprintf(errmsg, "unknown variable: %s", argv[i]); |
108 |
error(USER, errmsg); |
109 |
} |
110 |
/* check settings */ |
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checkvalues(); |
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/* load RIF if rtrace */ |
113 |
if (ncprocs) |
114 |
getradfile(); |
115 |
|
116 |
if (hdlist[0] == NULL) { /* create new holodeck */ |
117 |
HDGRID hdg[HDMAX]; |
118 |
/* set defaults */ |
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setdefaults(hdg); |
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/* holodeck exists? */ |
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if (!force && access(hdkfile, R_OK|W_OK) == 0) |
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error(USER, |
123 |
"holodeck file exists -- use -f to overwrite"); |
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/* create holodeck */ |
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creatholo(hdg); |
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} else /* else just set defaults */ |
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setdefaults(NULL); |
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/* initialize */ |
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initrholo(); |
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/* main loop */ |
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while (rholo()) |
132 |
; |
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/* done */ |
134 |
quit(0); |
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userr: |
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fprintf(stderr, |
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"Usage: %s [-n nprocs][-o disp][-w][-f] output.hdk [control.hif|+|- [VAR=val ..]]\n", |
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progname); |
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quit(1); |
140 |
} |
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|
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|
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onsig(signo) /* fatal signal */ |
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int signo; |
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{ |
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static int gotsig = 0; |
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|
148 |
if (gotsig++) /* two signals and we're gone! */ |
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_exit(signo); |
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|
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alarm(60); /* allow 60 seconds to clean up */ |
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signal(SIGALRM, SIG_DFL); /* make certain we do die */ |
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eputs("signal - "); |
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eputs(sigerr[signo]); |
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eputs("\n"); |
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quit(3); |
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} |
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|
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|
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sigdie(signo, msg) /* set fatal signal */ |
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int signo; |
162 |
char *msg; |
163 |
{ |
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if (signal(signo, onsig) == SIG_IGN) |
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signal(signo, SIG_IGN); |
166 |
sigerr[signo] = msg; |
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} |
168 |
|
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|
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int |
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resfmode(fd, mod) /* restrict open file access mode */ |
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int fd, mod; |
173 |
{ |
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struct stat stbuf; |
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/* get original mode */ |
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if (fstat(fd, &stbuf) < 0) |
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error(SYSTEM, "cannot stat open holodeck file"); |
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mod &= stbuf.st_mode; /* always more restrictive */ |
179 |
if (mod == stbuf.st_mode) |
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return(-1); /* already set */ |
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/* else change it */ |
182 |
if (fchmod(fd, mod) < 0) { |
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error(WARNING, "cannot change holodeck file access mode"); |
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return(-1); |
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} |
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return(stbuf.st_mode); /* return original mode */ |
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} |
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|
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|
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initrholo() /* get our holodeck running */ |
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{ |
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extern int global_packet(); |
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register int i; |
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/* close holodeck on exec() */ |
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fcntl(hdlist[0]->fd, F_SETFD, FD_CLOEXEC); |
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|
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if (outdev != NULL) /* open output device */ |
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disp_open(outdev); |
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else if (ncprocs > 0) /* else use global ray feed */ |
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init_global(); |
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/* record disk space limit */ |
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if (!vdef(DISKSPACE)) |
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maxdisk = 0; |
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else |
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maxdisk = 1024.*1024.*vflt(DISKSPACE); |
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/* set up memory cache */ |
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if (outdev == NULL) |
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hdcachesize = 0; /* manual flushing */ |
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else if (vdef(CACHE)) |
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hdcachesize = 1024.*1024.*vflt(CACHE); |
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/* open report file */ |
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if (vdef(REPORT)) { |
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register char *s = sskip2(vval(REPORT), 1); |
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if (*s && freopen(s, "a", stderr) == NULL) |
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quit(2); |
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} |
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/* mark the starting time */ |
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starttime = time(NULL); |
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/* compute end time */ |
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if (!vdef(TIME) || vflt(TIME) <= FTINY) |
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endtime = 0; |
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else |
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endtime = starttime + vflt(TIME)*3600. + .5; |
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/* start rtrace */ |
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if (ncprocs > 0) { |
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i = start_rtrace(); |
227 |
if (i < 1) |
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error(USER, "cannot start rtrace process(es)"); |
229 |
if (vdef(REPORT)) { /* make first report */ |
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printargs(rtargc, rtargv, stderr); |
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report(0); |
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} |
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/* allocate packets */ |
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freepacks = (PACKET *)bmalloc(i*sizeof(PACKET)); |
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if (freepacks == NULL) |
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goto memerr; |
237 |
if (!(avgqlen = i/nprocs)) /* record mean queue length */ |
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avgqlen = 1; |
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freepacks[--i].nr = 0; |
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freepacks[i].next = NULL; |
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if (!vdef(OBSTRUCTIONS) || !vbool(OBSTRUCTIONS)) { |
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freepacks[i].offset = (float *)bmalloc( |
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RPACKSIZ*sizeof(float)*(i+1) ); |
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if (freepacks[i].offset == NULL) |
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goto memerr; |
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} else |
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freepacks[i].offset = NULL; |
248 |
while (i--) { |
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freepacks[i].nr = 0; |
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freepacks[i].offset = freepacks[i+1].offset == NULL ? |
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NULL : freepacks[i+1].offset+RPACKSIZ ; |
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freepacks[i].next = &freepacks[i+1]; |
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} |
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} |
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/* set up signal handling */ |
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sigdie(SIGINT, "Interrupt"); |
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sigdie(SIGHUP, "Hangup"); |
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sigdie(SIGTERM, "Terminate"); |
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sigdie(SIGPIPE, "Broken pipe"); |
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sigdie(SIGALRM, "Alarm clock"); |
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#ifdef SIGXCPU |
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sigdie(SIGXCPU, "CPU limit exceeded"); |
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sigdie(SIGXFSZ, "File size exceeded"); |
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#endif |
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/* protect holodeck file */ |
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orig_mode = resfmode(hdlist[0]->fd, ncprocs>0 ? 0 : 0444); |
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return; |
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memerr: |
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error(SYSTEM, "out of memory in initrholo"); |
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} |
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|
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|
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rholo() /* holodeck main loop */ |
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{ |
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static int idle = 0; |
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PACKET *pl = NULL, *plend; |
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int pksiz; |
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register PACKET *p; |
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time_t t; |
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/* check display */ |
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if (nprocs <= 0) |
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idle = 1; |
283 |
if (outdev != NULL) { |
284 |
if (!disp_check(idle)) |
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return(0); /* quit request */ |
286 |
if (nprocs <= 0) |
287 |
return(1); |
288 |
} else if (idle) |
289 |
return(0); /* all done */ |
290 |
/* check file size */ |
291 |
if (maxdisk > 0 && hdfilen(hdlist[0]->fd) >= maxdisk) { |
292 |
error(WARNING, "file limit exceeded"); |
293 |
done_rtrace(); |
294 |
return(1); /* comes back */ |
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} |
296 |
t = time(NULL); /* check time */ |
297 |
if (endtime > 0 && t >= endtime) { |
298 |
error(WARNING, "time limit exceeded"); |
299 |
done_rtrace(); |
300 |
return(1); /* comes back */ |
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} |
302 |
if (reporttime > 0 && t >= reporttime) |
303 |
report(t); |
304 |
/* figure out good packet size */ |
305 |
#if MAXQTIME |
306 |
pksiz = nraysdone*MAXQTIME/(avgqlen*(t - starttime + 1L)); |
307 |
if (pksiz < 1) |
308 |
pksiz = 1; |
309 |
else if (pksiz > RPACKSIZ) |
310 |
#endif |
311 |
pksiz = RPACKSIZ; |
312 |
idle = 0; /* get packets to process */ |
313 |
while (freepacks != NULL) { |
314 |
p = freepacks; freepacks = p->next; p->next = NULL; |
315 |
if (!next_packet(p, pksiz)) { |
316 |
p->next = freepacks; freepacks = p; |
317 |
idle = 1; |
318 |
break; |
319 |
} |
320 |
if (pl == NULL) pl = p; |
321 |
else plend->next = p; |
322 |
plend = p; |
323 |
} |
324 |
/* process packets */ |
325 |
done_packets(do_packets(pl)); |
326 |
return(1); /* and continue */ |
327 |
} |
328 |
|
329 |
|
330 |
setdefaults(gp) /* set default values */ |
331 |
register HDGRID *gp; |
332 |
{ |
333 |
extern char *atos(); |
334 |
register int i; |
335 |
int n; |
336 |
double len[3], maxlen, d; |
337 |
char buf[64]; |
338 |
|
339 |
if (!vdef(SECTION)) { |
340 |
sprintf(errmsg, "%s must be defined", vnam(SECTION)); |
341 |
error(USER, errmsg); |
342 |
} |
343 |
if (!vdef(OCTREE)) { |
344 |
if ((vval(OCTREE) = bmalloc(strlen(froot)+5)) == NULL) |
345 |
error(SYSTEM, "out of memory"); |
346 |
sprintf(vval(OCTREE), "%s.oct", froot); |
347 |
vdef(OCTREE)++; |
348 |
} |
349 |
if (!vdef(VDIST)) { |
350 |
vval(VDIST) = "F"; |
351 |
vdef(VDIST)++; |
352 |
} |
353 |
/* append rendering options */ |
354 |
if (vdef(RENDER)) |
355 |
rtargc += wordstring(rtargv+rtargc, vval(RENDER)); |
356 |
|
357 |
if (gp == NULL) /* already initialized? */ |
358 |
return; |
359 |
/* set grid parameters */ |
360 |
for (n = 0; n < vdef(SECTION); n++, gp++) { |
361 |
gp->grid[0] = gp->grid[1] = gp->grid[2] = 0; |
362 |
if (sscanf(nvalue(SECTION, n), |
363 |
"%lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %hd %hd %hd", |
364 |
&gp->orig[0], &gp->orig[1], &gp->orig[2], |
365 |
&gp->xv[0][0], &gp->xv[0][1], &gp->xv[0][2], |
366 |
&gp->xv[1][0], &gp->xv[1][1], &gp->xv[1][2], |
367 |
&gp->xv[2][0], &gp->xv[2][1], &gp->xv[2][2], |
368 |
&gp->grid[0], &gp->grid[1], &gp->grid[2]) < 12) |
369 |
badvalue(SECTION); |
370 |
maxlen = 0.; |
371 |
for (i = 0; i < 3; i++) |
372 |
if ((len[i] = VLEN(gp->xv[i])) > maxlen) |
373 |
maxlen = len[i]; |
374 |
if (!vdef(GRID)) |
375 |
d = 0.125*maxlen; |
376 |
else if ((d = vflt(GRID)) <= FTINY) |
377 |
badvalue(GRID); |
378 |
for (i = 0; i < 3; i++) |
379 |
if (gp->grid[i] <= 0) |
380 |
gp->grid[i] = len[i]/d + (1.-FTINY); |
381 |
} |
382 |
} |
383 |
|
384 |
|
385 |
creatholo(gp) /* create a holodeck output file */ |
386 |
HDGRID *gp; |
387 |
{ |
388 |
extern char VersionID[]; |
389 |
int4 lastloc, nextloc; |
390 |
int n; |
391 |
int fd; |
392 |
FILE *fp; |
393 |
/* open & truncate file */ |
394 |
if ((fp = fopen(hdkfile, "w+")) == NULL) { |
395 |
sprintf(errmsg, "cannot open \"%s\" for writing", hdkfile); |
396 |
error(SYSTEM, errmsg); |
397 |
} |
398 |
/* write information header */ |
399 |
newheader("RADIANCE", fp); |
400 |
fprintf(fp, "SOFTWARE= %s\n", VersionID); |
401 |
printvars(fp); |
402 |
fputformat(HOLOFMT, fp); |
403 |
fputc('\n', fp); |
404 |
putw(HOLOMAGIC, fp); /* put magic number */ |
405 |
fd = dup(fileno(fp)); |
406 |
fclose(fp); /* flush and close stdio stream */ |
407 |
lastloc = lseek(fd, 0L, 2); |
408 |
for (n = vdef(SECTION); n--; gp++) { /* initialize each section */ |
409 |
nextloc = 0L; |
410 |
write(fd, (char *)&nextloc, sizeof(nextloc)); |
411 |
hdinit(fd, gp); /* writes beam index */ |
412 |
if (!n) |
413 |
break; |
414 |
nextloc = hdfilen(fd); /* write section pointer */ |
415 |
if (lseek(fd, (long)lastloc, 0) < 0) |
416 |
error(SYSTEM, |
417 |
"cannot seek on holodeck file in creatholo"); |
418 |
write(fd, (char *)&nextloc, sizeof(nextloc)); |
419 |
lseek(fd, (long)(lastloc=nextloc), 0); |
420 |
} |
421 |
} |
422 |
|
423 |
|
424 |
headline(s) /* process information header line */ |
425 |
char *s; |
426 |
{ |
427 |
extern char FMTSTR[]; |
428 |
register char *cp; |
429 |
char fmt[32]; |
430 |
|
431 |
if (formatval(fmt, s)) { |
432 |
if (strcmp(fmt, HOLOFMT)) { |
433 |
sprintf(errmsg, "%s file \"%s\" has %s%s", |
434 |
HOLOFMT, hdkfile, FMTSTR, fmt); |
435 |
error(USER, errmsg); |
436 |
} |
437 |
return; |
438 |
} |
439 |
for (cp = s; *cp; cp++) /* take off any comments */ |
440 |
if (*cp == '#') { |
441 |
*cp = '\0'; |
442 |
break; |
443 |
} |
444 |
setvariable(s, matchvar); /* don't flag errors */ |
445 |
} |
446 |
|
447 |
|
448 |
loadholo() /* start loading a holodeck from fname */ |
449 |
{ |
450 |
extern long ftell(); |
451 |
FILE *fp; |
452 |
int fd; |
453 |
int n; |
454 |
int4 nextloc; |
455 |
/* open holodeck file */ |
456 |
if ((fp = fopen(hdkfile, ncprocs>0 ? "r+" : "r")) == NULL) { |
457 |
sprintf(errmsg, "cannot open \"%s\" for %s", hdkfile, |
458 |
ncprocs>0 ? "appending" : "reading"); |
459 |
error(SYSTEM, errmsg); |
460 |
} |
461 |
/* load variables from header */ |
462 |
getheader(fp, headline, NULL); |
463 |
/* check magic number */ |
464 |
if (getw(fp) != HOLOMAGIC) { |
465 |
sprintf(errmsg, "bad magic number in holodeck file \"%s\"", |
466 |
hdkfile); |
467 |
error(USER, errmsg); |
468 |
} |
469 |
nextloc = ftell(fp); /* get stdio position */ |
470 |
fd = dup(fileno(fp)); |
471 |
fclose(fp); /* done with stdio */ |
472 |
for (n = 0; nextloc > 0L; n++) { /* initialize each section */ |
473 |
lseek(fd, (long)nextloc, 0); |
474 |
read(fd, (char *)&nextloc, sizeof(nextloc)); |
475 |
hdinit(fd, NULL); |
476 |
} |
477 |
if (n != vdef(SECTION)) { |
478 |
sprintf(errmsg, "number of sections does not match %s setting", |
479 |
vnam(SECTION)); |
480 |
error(WARNING, errmsg); |
481 |
} |
482 |
} |
483 |
|
484 |
|
485 |
done_packets(pl) /* handle finished packets */ |
486 |
PACKET *pl; |
487 |
{ |
488 |
static int n2flush = 0; |
489 |
register PACKET *p; |
490 |
|
491 |
while (pl != NULL) { |
492 |
p = pl; pl = p->next; p->next = NULL; |
493 |
if (p->nr > 0) { /* add to holodeck */ |
494 |
bcopy((char *)p->ra, |
495 |
(char *)hdnewrays(hdlist[p->hd],p->bi,p->nr), |
496 |
p->nr*sizeof(RAYVAL)); |
497 |
if (outdev != NULL) /* display it */ |
498 |
disp_packet((PACKHEAD *)p); |
499 |
if (hdcachesize <= 0) /* manual flushing */ |
500 |
n2flush++; |
501 |
nraysdone += p->nr; |
502 |
npacksdone++; |
503 |
p->nr = 0; |
504 |
} |
505 |
p->next = freepacks; /* push onto free list */ |
506 |
freepacks = p; |
507 |
} |
508 |
if (n2flush > 300/MAXQTIME*avgqlen*nprocs) { |
509 |
hdflush(NULL); /* flush holodeck buffers */ |
510 |
n2flush = 0; |
511 |
} |
512 |
} |
513 |
|
514 |
|
515 |
rootname(rn, fn) /* remove tail from end of fn */ |
516 |
register char *rn, *fn; |
517 |
{ |
518 |
char *tp, *dp; |
519 |
|
520 |
for (tp = NULL, dp = rn; *rn = *fn++; rn++) |
521 |
if (*rn == '/') |
522 |
dp = rn; |
523 |
else if (*rn == '.') |
524 |
tp = rn; |
525 |
if (tp != NULL && tp > dp) |
526 |
*tp = '\0'; |
527 |
} |
528 |
|
529 |
|
530 |
badvalue(vc) /* report bad variable value and exit */ |
531 |
int vc; |
532 |
{ |
533 |
sprintf(errmsg, "bad value for variable '%s'", vnam(vc)); |
534 |
error(USER, errmsg); |
535 |
} |
536 |
|
537 |
|
538 |
eputs(s) /* put error message to stderr */ |
539 |
register char *s; |
540 |
{ |
541 |
static int midline = 0; |
542 |
|
543 |
if (!*s) |
544 |
return; |
545 |
if (!midline++) { /* prepend line with program name */ |
546 |
fputs(progname, stderr); |
547 |
fputs(": ", stderr); |
548 |
} |
549 |
fputs(s, stderr); |
550 |
if (s[strlen(s)-1] == '\n') { |
551 |
fflush(stderr); |
552 |
midline = 0; |
553 |
} |
554 |
} |
555 |
|
556 |
|
557 |
wputs(s) /* put warning string to stderr */ |
558 |
char *s; |
559 |
{ |
560 |
if (!nowarn) |
561 |
eputs(s); |
562 |
} |
563 |
|
564 |
|
565 |
quit(ec) /* exit program gracefully */ |
566 |
int ec; |
567 |
{ |
568 |
int status = 0; |
569 |
|
570 |
if (hdlist[0] != NULL) { /* close holodeck */ |
571 |
if (nprocs > 0) |
572 |
status = done_rtrace(); /* calls hdsync() */ |
573 |
if (ncprocs > 0 && vdef(REPORT)) { |
574 |
long fsiz, fuse; |
575 |
fsiz = hdfilen(hdlist[0]->fd); |
576 |
fuse = hdfiluse(hdlist[0]->fd, 1); |
577 |
fprintf(stderr, |
578 |
"%s: %.1f Mbyte holodeck file, %.1f%% fragmentation\n", |
579 |
hdkfile, fsiz/(1024.*1024.), |
580 |
100.*(fsiz-fuse)/fsiz); |
581 |
} |
582 |
} |
583 |
if (orig_mode >= 0) /* reset holodeck access mode */ |
584 |
fchmod(hdlist[0]->fd, orig_mode); |
585 |
if (outdev != NULL) /* close display */ |
586 |
disp_close(); |
587 |
exit(ec ? ec : status); /* exit */ |
588 |
} |