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/* Copyright (c) 1992 Regents of the University of California */ |
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/* Copyright (c) 1993 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
9 |
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*/ |
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11 |
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#include "standard.h" |
12 |
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#include <fcntl.h> |
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|
13 |
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#ifndef F_SETLKW |
14 |
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|
15 |
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main(argc, argv) |
16 |
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int argc; |
17 |
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char *argv[]; |
18 |
> |
{ |
19 |
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fprintf(stderr, "%s: no NFS lock manager on this machine\n", argv[0]); |
20 |
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exit(1); |
21 |
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} |
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|
23 |
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#else |
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|
25 |
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#include <signal.h> |
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#include "color.h" |
27 |
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#include "view.h" |
28 |
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#include "resolu.h" |
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|
30 |
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#ifndef NFS |
31 |
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#define NFS 1 |
32 |
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#endif |
33 |
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/* set the following to 0 to forgo forking */ |
34 |
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#ifndef MAXFORK |
35 |
+ |
#if NFS |
36 |
+ |
#define MAXFORK 3 /* allotment of duped processes */ |
37 |
+ |
#else |
38 |
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#define MAXFORK 0 |
39 |
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#endif |
40 |
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#endif |
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/* protection from SYSV signals(!) */ |
42 |
+ |
#if defined(sgi) || defined(hpux) |
43 |
+ |
#define guard_io() sighold(SIGALRM) |
44 |
+ |
#define unguard() sigrelse(SIGALRM) |
45 |
+ |
#endif |
46 |
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#ifndef guard_io |
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+ |
#define guard_io() 0 |
48 |
+ |
#define unguard() 0 |
49 |
+ |
#endif |
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/* rpict command */ |
51 |
< |
char *rpargv[128] = {"rpict", "-S", "1", "-x", "512", "-y", "512", }; |
52 |
< |
int rpargc = 7; |
51 |
> |
char *rpargv[128] = {"rpict", "-S", "1"}; |
52 |
> |
int rpargc = 3; |
53 |
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int rpd[3]; |
54 |
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FILE *torp, *fromrp; |
55 |
< |
COLR *scanline; |
55 |
> |
COLR *pbuf; |
56 |
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/* our view parameters */ |
57 |
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VIEW ourview = STDVIEW; |
58 |
< |
double pixaspect = 0.0; |
59 |
< |
int hres = 512, vres = 512, hmult = 2, vmult = 2; |
58 |
> |
double pixaspect = 1.0; |
59 |
> |
int hres = 1024, vres = 1024, hmult = 4, vmult = 4; |
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/* output file */ |
61 |
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char *outfile = NULL; |
62 |
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int outfd; |
63 |
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long scanorig; |
64 |
+ |
FILE *syncfp = NULL; /* synchronization file pointer */ |
65 |
+ |
int synclst = F_UNLCK; /* synchronization file lock status */ |
66 |
+ |
int nforked = 0; |
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|
68 |
+ |
#define sflock(t) if ((t)!=synclst) dolock(fileno(syncfp),synclst=t) |
69 |
+ |
|
70 |
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char *progname; |
71 |
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int verbose = 0; |
72 |
+ |
int rvrlim = -1; |
73 |
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|
74 |
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extern long lseek(), ftell(); |
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|
76 |
+ |
int gotalrm = 0; |
77 |
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int onalrm() { gotalrm++; } |
78 |
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|
79 |
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|
80 |
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main(argc, argv) |
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int argc; |
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char *argv[]; |
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|
86 |
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progname = argv[0]; |
87 |
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for (i = 1; i < argc; i++) { |
88 |
+ |
/* expand arguments */ |
89 |
+ |
while (rval = expandarg(&argc, &argv, i)) |
90 |
+ |
if (rval < 0) { |
91 |
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fprintf(stderr, "%s: cannot expand '%s'", |
92 |
+ |
argv[0], argv[i]); |
93 |
+ |
exit(1); |
94 |
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} |
95 |
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if (argv[i][0] == '-') |
96 |
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switch (argv[i][1]) { |
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case 'v': |
116 |
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} |
117 |
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break; |
118 |
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case 'p': /* pixel aspect ratio? */ |
119 |
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if (argv[i][2] == 'a' && !argv[i][3]) |
120 |
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pixaspect = atof(argv[i+1]); |
121 |
< |
break; |
122 |
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case 'x': /* piece x resolution */ |
123 |
< |
if (!argv[i][2]) |
124 |
< |
hres = atoi(argv[i+1]); |
125 |
< |
break; |
126 |
< |
case 'y': /* piece y resolution */ |
127 |
< |
if (!argv[i][2]) |
128 |
< |
vres = atoi(argv[i+1]); |
129 |
< |
break; |
119 |
> |
if (argv[i][2] != 'a' || argv[i][3]) |
120 |
> |
break; |
121 |
> |
pixaspect = atof(argv[i+1]); |
122 |
> |
continue; |
123 |
> |
case 'x': /* overall x resolution */ |
124 |
> |
if (argv[i][2]) |
125 |
> |
break; |
126 |
> |
hres = atoi(argv[++i]); |
127 |
> |
continue; |
128 |
> |
case 'y': /* overall y resolution */ |
129 |
> |
if (argv[i][2]) |
130 |
> |
break; |
131 |
> |
vres = atoi(argv[++i]); |
132 |
> |
continue; |
133 |
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case 'X': /* horizontal multiplier */ |
134 |
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if (argv[i][2]) |
135 |
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break; |
140 |
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break; |
141 |
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vmult = atoi(argv[++i]); |
142 |
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continue; |
143 |
+ |
case 'R': /* recover */ |
144 |
+ |
if (argv[i][2]) |
145 |
+ |
break; |
146 |
+ |
rvrlim = 0; |
147 |
+ |
/* fall through */ |
148 |
+ |
case 'F': /* syncronization file */ |
149 |
+ |
if (argv[i][2]) |
150 |
+ |
break; |
151 |
+ |
if ((syncfp = fopen(argv[++i],"r+")) == NULL) { |
152 |
+ |
fprintf(stderr, "%s: cannot open\n", |
153 |
+ |
argv[i]); |
154 |
+ |
exit(1); |
155 |
+ |
} |
156 |
+ |
continue; |
157 |
+ |
case 'z': /* z-file ist verbotten */ |
158 |
+ |
fprintf(stderr, "%s: -z option not allowed\n", |
159 |
+ |
argv[0]); |
160 |
+ |
exit(1); |
161 |
|
case 'o': /* output file */ |
162 |
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if (argv[i][2]) |
163 |
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break; |
164 |
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outfile = argv[++i]; |
165 |
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continue; |
166 |
< |
} |
166 |
> |
} else if (i >= argc-1) |
167 |
> |
break; |
168 |
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rpargv[rpargc++] = argv[i]; |
169 |
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} |
170 |
< |
rpargv[rpargc] = NULL; |
170 |
> |
if (i >= argc) { |
171 |
> |
fprintf(stderr, "%s: missing octree argument\n", argv[0]); |
172 |
> |
exit(1); |
173 |
> |
} |
174 |
|
if (outfile == NULL) { |
175 |
|
fprintf(stderr, "%s: missing output file\n", argv[0]); |
176 |
|
exit(1); |
177 |
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} |
178 |
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init(argc, argv); |
179 |
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rpiece(); |
180 |
< |
rval = cleanup(); |
107 |
< |
exit(rval); |
180 |
> |
exit(cleanup(0)); |
181 |
|
} |
182 |
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|
183 |
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|
184 |
+ |
dolock(fd, ltyp) /* lock or unlock a file */ |
185 |
+ |
int fd; |
186 |
+ |
int ltyp; |
187 |
+ |
{ |
188 |
+ |
static struct flock fls; /* static so initialized to zeroes */ |
189 |
+ |
|
190 |
+ |
fls.l_type = ltyp; |
191 |
+ |
if (fcntl(fd, F_SETLKW, &fls) < 0) { |
192 |
+ |
fprintf(stderr, "%s: cannot lock/unlock file\n", progname); |
193 |
+ |
exit(1); |
194 |
+ |
} |
195 |
+ |
} |
196 |
+ |
|
197 |
+ |
|
198 |
|
init(ac, av) /* set up output file and start rpict */ |
199 |
|
int ac; |
200 |
|
char **av; |
201 |
|
{ |
202 |
+ |
static char hrbuf[16], vrbuf[16]; |
203 |
|
extern char VersionID[]; |
204 |
|
char *err; |
205 |
|
FILE *fp; |
209 |
|
fprintf(stderr, "%s: %s\n", progname, err); |
210 |
|
exit(1); |
211 |
|
} |
212 |
+ |
if (syncfp != NULL) { |
213 |
+ |
sflock(F_RDLCK); |
214 |
+ |
fscanf(syncfp, "%d %d", &hmult, &vmult); |
215 |
+ |
sflock(F_UNLCK); |
216 |
+ |
} |
217 |
+ |
/* compute piece size */ |
218 |
+ |
hres /= hmult; |
219 |
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vres /= vmult; |
220 |
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normaspect(viewaspect(&ourview)*hmult/vmult, &pixaspect, &hres, &vres); |
221 |
+ |
sprintf(hrbuf, "%d", hres); |
222 |
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rpargv[rpargc++] = "-x"; rpargv[rpargc++] = hrbuf; |
223 |
+ |
sprintf(vrbuf, "%d", vres); |
224 |
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rpargv[rpargc++] = "-y"; rpargv[rpargc++] = vrbuf; |
225 |
+ |
rpargv[rpargc++] = "-pa"; rpargv[rpargc++] = "0"; |
226 |
+ |
rpargv[rpargc++] = av[ac-1]; |
227 |
+ |
rpargv[rpargc] = NULL; |
228 |
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/* open output file */ |
229 |
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if ((outfd = open(outfile, O_WRONLY|O_CREAT|O_EXCL, 0666)) >= 0) { |
230 |
+ |
dolock(outfd, F_WRLCK); |
231 |
|
if ((fp = fdopen(dup(outfd), "w")) == NULL) |
232 |
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goto filerr; |
233 |
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printargs(ac, av, fp); /* write header */ |
241 |
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putc('\n', fp); |
242 |
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fprtresolu(hres*hmult, vres*vmult, fp); |
243 |
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} else if ((outfd = open(outfile, O_RDWR)) >= 0) { |
244 |
< |
sleep(30); /* wait for header */ |
244 |
> |
dolock(outfd, F_RDLCK); |
245 |
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if ((fp = fdopen(dup(outfd), "r+")) == NULL) |
246 |
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goto filerr; |
247 |
< |
getheader(fp, NULL); /* skip header */ |
248 |
< |
if (fscnresolu(&hr, &vr, fp) < 0 || /* check resolution */ |
247 |
> |
getheader(fp, NULL, NULL); /* skip header */ |
248 |
> |
if (!fscnresolu(&hr, &vr, fp) || /* check resolution */ |
249 |
|
hr != hres*hmult || vr != vres*vmult) { |
250 |
< |
fprintf(stderr, "%s: picture resolution mismatch\n", |
251 |
< |
outfile); |
250 |
> |
fprintf(stderr, "%s: resolution mismatch on file \"%s\"\n", |
251 |
> |
progname, outfile); |
252 |
|
exit(1); |
253 |
|
} |
254 |
|
} else { |
255 |
< |
fprintf(stderr, "%s: cannot open\n", outfile); |
255 |
> |
fprintf(stderr, "%s: cannot open file \"%s\"\n", |
256 |
> |
progname, outfile); |
257 |
|
exit(1); |
258 |
|
} |
259 |
|
scanorig = ftell(fp); /* record position of first scanline */ |
260 |
|
if (fclose(fp) == -1) /* done with stream i/o */ |
261 |
|
goto filerr; |
262 |
+ |
dolock(outfd, F_UNLCK); |
263 |
|
/* start rpict process */ |
264 |
|
if (open_process(rpd, rpargv) <= 0) { |
265 |
|
fprintf(stderr, "%s: cannot start %s\n", progname, rpargv[0]); |
271 |
|
progname, rpargv[0]); |
272 |
|
exit(1); |
273 |
|
} |
274 |
< |
if ((scanline = (COLR *)malloc(hres*sizeof(COLR))) == NULL) { |
274 |
> |
if ((pbuf = (COLR *)bmalloc(hres*vres*sizeof(COLR))) == NULL) { |
275 |
|
fprintf(stderr, "%s: out of memory\n", progname); |
276 |
|
exit(1); |
277 |
|
} |
278 |
+ |
signal(SIGALRM, onalrm); |
279 |
|
return; |
280 |
|
filerr: |
281 |
< |
fprintf(stderr, "%s: file i/o error\n", outfile); |
281 |
> |
fprintf(stderr, "%s: i/o error on file \"%s\"\n", progname, outfile); |
282 |
|
exit(1); |
283 |
|
} |
284 |
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|
285 |
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|
286 |
|
int |
287 |
< |
cleanup() /* close rpict process and clean up */ |
287 |
> |
nextpiece(xp, yp) /* get next piece assignment */ |
288 |
> |
int *xp, *yp; |
289 |
|
{ |
290 |
< |
register int rpstat; |
290 |
> |
if (gotalrm) /* someone wants us to quit */ |
291 |
> |
return(0); |
292 |
> |
if (syncfp != NULL) { /* use sync file */ |
293 |
> |
/* |
294 |
> |
* So we don't necessarily have to lock and unlock the file |
295 |
> |
* multiple times (very slow), we establish an exclusive |
296 |
> |
* lock at the beginning on our synchronization file and |
297 |
> |
* maintain it in the subroutine rvrpiece(). |
298 |
> |
*/ |
299 |
> |
sflock(F_WRLCK); |
300 |
> |
fseek(syncfp, 0L, 0); /* read position */ |
301 |
> |
if (fscanf(syncfp, "%*d %*d %d %d", xp, yp) < 2) { |
302 |
> |
*xp = hmult-1; |
303 |
> |
*yp = vmult; |
304 |
> |
} |
305 |
> |
if (rvrlim == 0) /* initialize recovery limit */ |
306 |
> |
rvrlim = *xp*vmult + *yp; |
307 |
> |
if (rvrpiece(xp, yp)) { /* do stragglers first */ |
308 |
> |
sflock(F_UNLCK); |
309 |
> |
return(1); |
310 |
> |
} |
311 |
> |
if (--(*yp) < 0) { /* decrement position */ |
312 |
> |
*yp = vmult-1; |
313 |
> |
if (--(*xp) < 0) { /* all done */ |
314 |
> |
sflock(F_UNLCK); |
315 |
> |
return(0); |
316 |
> |
} |
317 |
> |
} |
318 |
> |
fseek(syncfp, 0L, 0); /* write new position */ |
319 |
> |
fprintf(syncfp, "%4d %4d\n%4d %4d\n\n", hmult, vmult, *xp, *yp); |
320 |
> |
fflush(syncfp); |
321 |
> |
sflock(F_UNLCK); /* release sync file */ |
322 |
> |
return(1); |
323 |
> |
} |
324 |
> |
return(scanf("%d %d", xp, yp) == 2); /* use stdin */ |
325 |
> |
} |
326 |
|
|
327 |
< |
free((char *)scanline); |
327 |
> |
|
328 |
> |
int |
329 |
> |
rvrpiece(xp, yp) /* check for recoverable pieces */ |
330 |
> |
register int *xp, *yp; |
331 |
> |
{ |
332 |
> |
static char *pdone = NULL; /* which pieces are done */ |
333 |
> |
static long readpos = -1; /* how far we've read */ |
334 |
> |
register int i; |
335 |
> |
/* |
336 |
> |
* This routine is called by nextpiece() with an |
337 |
> |
* exclusive lock on syncfp and the file pointer at the |
338 |
> |
* appropriate position to read in the finished pieces. |
339 |
> |
*/ |
340 |
> |
if (rvrlim < 0) |
341 |
> |
return(0); /* only check if asked */ |
342 |
> |
if (pdone == NULL) /* first call */ |
343 |
> |
pdone = calloc(hmult*vmult, sizeof(char)); |
344 |
> |
if (readpos != -1) /* mark what's been done */ |
345 |
> |
fseek(syncfp, readpos, 0); |
346 |
> |
while (fscanf(syncfp, "%d %d", xp, yp) == 2) |
347 |
> |
pdone[*xp*vmult+*yp] = 1; |
348 |
> |
if (!feof(syncfp)) { |
349 |
> |
fprintf(stderr, "%s: format error in sync file\n", progname); |
350 |
> |
exit(1); |
351 |
> |
} |
352 |
> |
readpos = ftell(syncfp); |
353 |
> |
i = hmult*vmult; /* find an unaccounted for piece */ |
354 |
> |
while (i-- > rvrlim) |
355 |
> |
if (!pdone[i]) { |
356 |
> |
*xp = i / vmult; |
357 |
> |
*yp = i % vmult; |
358 |
> |
pdone[i] = 1; /* consider it done */ |
359 |
> |
return(1); |
360 |
> |
} |
361 |
> |
rvrlim = -1; /* nothing left to recover */ |
362 |
> |
free(pdone); |
363 |
> |
pdone = NULL; |
364 |
> |
return(0); |
365 |
> |
} |
366 |
> |
|
367 |
> |
|
368 |
> |
int |
369 |
> |
cleanup(rstat) /* close rpict process and clean up */ |
370 |
> |
int rstat; |
371 |
> |
{ |
372 |
> |
int status; |
373 |
> |
|
374 |
> |
bfree((char *)pbuf, hres*vres*sizeof(COLR)); |
375 |
|
fclose(torp); |
376 |
|
fclose(fromrp); |
377 |
< |
rpstat = close_process(rpd); |
378 |
< |
if (rpstat == -1) |
379 |
< |
rpstat = 0; |
380 |
< |
return(rpstat); |
377 |
> |
while (wait(&status) != -1) |
378 |
> |
if (rstat == 0) |
379 |
> |
rstat = status>>8 & 0xff; |
380 |
> |
return(rstat); |
381 |
|
} |
382 |
|
|
383 |
|
|
384 |
|
rpiece() /* render picture piece by piece */ |
385 |
|
{ |
196 |
– |
extern char *gets(), *strcat(); |
386 |
|
VIEW pview; |
198 |
– |
char buf[48]; |
387 |
|
int xorg, yorg; |
388 |
< |
|
389 |
< |
while (gets(buf) != NULL) { |
390 |
< |
if (sscanf(buf, "%d %d", &xorg, &yorg) != 2) { |
391 |
< |
fprintf(stderr, "%s: input format error\n", progname); |
392 |
< |
exit(1); |
393 |
< |
} |
394 |
< |
copystruct(&pview, &ourview); /* compute view for piece */ |
395 |
< |
switch (ourview.type) { |
396 |
< |
case VT_PER: |
397 |
< |
pview.horiz = 2.*180./PI*atan( |
398 |
< |
tan(PI/180./2.*ourview.horiz)/hmult ); |
399 |
< |
pview.vert = 2.*180./PI*atan( |
400 |
< |
tan(PI/180./2.*ourview.vert)/vmult ); |
401 |
< |
break; |
402 |
< |
case VT_PAR: |
403 |
< |
case VT_ANG: |
404 |
< |
pview.horiz = ourview.horiz / hmult; |
405 |
< |
pview.vert = ourview.vert / vmult; |
406 |
< |
break; |
407 |
< |
case VT_HEM: |
408 |
< |
pview.horiz = 2.*180./PI*asin( |
409 |
< |
sin(PI/180./2.*ourview.horiz)/hmult ); |
410 |
< |
pview.vert = 2.*180./PI*asin( |
411 |
< |
sin(PI/180./2.*ourview.vert)/vmult ); |
412 |
< |
break; |
413 |
< |
default: |
414 |
< |
fprintf(stderr, "%s: unknown view type '-vt%c'\n", |
415 |
< |
progname, ourview.type); |
416 |
< |
exit(1); |
229 |
< |
} |
230 |
< |
pview.hoff += xorg - 0.5*(hmult-1); |
231 |
< |
pview.voff += yorg - 0.5*(vmult-1); |
388 |
> |
/* compute view parameters */ |
389 |
> |
copystruct(&pview, &ourview); |
390 |
> |
switch (ourview.type) { |
391 |
> |
case VT_PER: |
392 |
> |
pview.horiz = 2.*180./PI*atan( |
393 |
> |
tan(PI/180./2.*ourview.horiz)/hmult ); |
394 |
> |
pview.vert = 2.*180./PI*atan( |
395 |
> |
tan(PI/180./2.*ourview.vert)/vmult ); |
396 |
> |
break; |
397 |
> |
case VT_PAR: |
398 |
> |
case VT_ANG: |
399 |
> |
pview.horiz = ourview.horiz / hmult; |
400 |
> |
pview.vert = ourview.vert / vmult; |
401 |
> |
break; |
402 |
> |
case VT_HEM: |
403 |
> |
pview.horiz = 2.*180./PI*asin( |
404 |
> |
sin(PI/180./2.*ourview.horiz)/hmult ); |
405 |
> |
pview.vert = 2.*180./PI*asin( |
406 |
> |
sin(PI/180./2.*ourview.vert)/vmult ); |
407 |
> |
break; |
408 |
> |
default: |
409 |
> |
fprintf(stderr, "%s: unknown view type '-vt%c'\n", |
410 |
> |
progname, ourview.type); |
411 |
> |
exit(cleanup(1)); |
412 |
> |
} |
413 |
> |
/* render each piece */ |
414 |
> |
while (nextpiece(&xorg, &yorg)) { |
415 |
> |
pview.hoff = ourview.hoff + xorg - 0.5*(hmult-1); |
416 |
> |
pview.voff = ourview.voff + yorg - 0.5*(vmult-1); |
417 |
|
fputs(VIEWSTR, torp); |
418 |
|
fprintview(&pview, torp); |
419 |
|
putc('\n', torp); |
420 |
< |
fflush(torp); /* assign piece to rpict */ |
420 |
> |
fflush(torp); /* assigns piece to rpict */ |
421 |
|
putpiece(xorg, yorg); /* place piece in output */ |
237 |
– |
if (verbose) { /* notify caller */ |
238 |
– |
strcat(buf, " done\n"); |
239 |
– |
writebuf(fileno(stdout), buf, strlen(buf)); |
240 |
– |
} |
422 |
|
} |
423 |
|
} |
424 |
|
|
425 |
|
|
426 |
+ |
int |
427 |
|
putpiece(xpos, ypos) /* get next piece from rpict */ |
428 |
|
int xpos, ypos; |
429 |
|
{ |
430 |
+ |
struct flock fls; |
431 |
+ |
int pid, status; |
432 |
|
int hr, vr; |
433 |
< |
int y; |
434 |
< |
|
435 |
< |
getheader(fromrp, NULL); /* discard header info. */ |
436 |
< |
if (fscnresolu(&hr, &vr, fromrp) < 0 || /* check resolution */ |
437 |
< |
hr != hres || vr != vres) { |
433 |
> |
register int y; |
434 |
> |
/* check bounds */ |
435 |
> |
if (xpos < 0 | ypos < 0 | xpos >= hmult | ypos >= vmult) { |
436 |
> |
fprintf(stderr, "%s: requested piece (%d,%d) out of range\n", |
437 |
> |
progname, xpos, ypos); |
438 |
> |
exit(cleanup(1)); |
439 |
> |
} |
440 |
> |
/* check header from rpict */ |
441 |
> |
guard_io(); |
442 |
> |
getheader(fromrp, NULL, NULL); |
443 |
> |
if (!fscnresolu(&hr, &vr, fromrp) || hr != hres | vr != vres) { |
444 |
|
fprintf(stderr, "%s: resolution mismatch from %s\n", |
445 |
|
progname, rpargv[0]); |
446 |
< |
exit(1); |
446 |
> |
exit(cleanup(1)); |
447 |
|
} |
448 |
< |
for (y = 0; y < vr; y++) { /* transfer scanlines */ |
449 |
< |
if (freadcolrs(scanline, hr, fromrp) < 0) { |
448 |
> |
if (verbose) { /* notify caller */ |
449 |
> |
printf("%d %d begun\n", xpos, ypos); |
450 |
> |
fflush(stdout); |
451 |
> |
} |
452 |
> |
unguard(); |
453 |
> |
/* load new piece into buffer */ |
454 |
> |
for (y = 0; y < vr; y++) { |
455 |
> |
guard_io(); |
456 |
> |
if (freadcolrs(pbuf+y*hr, hr, fromrp) < 0) { |
457 |
|
fprintf(stderr, "%s: read error from %s\n", |
458 |
|
progname, rpargv[0]); |
459 |
< |
exit(1); |
459 |
> |
exit(cleanup(1)); |
460 |
|
} |
461 |
< |
if ((y == 0 || hmult != 1) && lseek(outfd, |
462 |
< |
scanorig+((long)((vmult-1-ypos)*vres+y)*hmult*hres+xpos*hres)*sizeof(COLR), |
463 |
< |
0) == -1) { |
464 |
< |
fprintf(stderr, "%s: seek error\n", outfile); |
465 |
< |
exit(1); |
461 |
> |
unguard(); |
462 |
> |
} |
463 |
> |
#if MAXFORK |
464 |
> |
/* fork so we don't slow rpict down */ |
465 |
> |
if ((pid = fork()) > 0) { |
466 |
> |
if (++nforked >= MAXFORK) { |
467 |
> |
wait(&status); /* reap a child */ |
468 |
> |
if (status) |
469 |
> |
exit(cleanup(status>>8 & 0xff)); |
470 |
> |
nforked--; |
471 |
|
} |
472 |
< |
if (writebuf(outfd, (char *)scanline, hr*sizeof(COLR)) != |
473 |
< |
hr*sizeof(COLR)) { |
474 |
< |
fprintf(stderr, "%s: write error\n", outfile); |
475 |
< |
exit(1); |
472 |
> |
return(pid); |
473 |
> |
} |
474 |
> |
#else |
475 |
> |
pid = -1; /* no forking */ |
476 |
> |
#endif |
477 |
> |
fls.l_start = scanorig + |
478 |
> |
((long)(vmult-1-ypos)*vres*hmult+xpos)*hres*sizeof(COLR); |
479 |
> |
#if NFS |
480 |
> |
fls.l_len = ((long)(vres-1)*hmult+1)*hres*sizeof(COLR); |
481 |
> |
/* lock file section so NFS doesn't mess up */ |
482 |
> |
fls.l_whence = 0; |
483 |
> |
fls.l_type = F_WRLCK; |
484 |
> |
if (fcntl(outfd, F_SETLKW, &fls) < 0) |
485 |
> |
filerr("lock"); |
486 |
> |
#endif |
487 |
> |
/* write new piece to file */ |
488 |
> |
if (lseek(outfd, fls.l_start, 0) == -1) |
489 |
> |
filerr("seek"); |
490 |
> |
if (hmult == 1) { |
491 |
> |
if (writebuf(outfd, (char *)pbuf, |
492 |
> |
vr*hr*sizeof(COLR)) != vr*hr*sizeof(COLR)) |
493 |
> |
filerr("write"); |
494 |
> |
} else |
495 |
> |
for (y = 0; y < vr; y++) { |
496 |
> |
if (writebuf(outfd, (char *)(pbuf+y*hr), |
497 |
> |
hr*sizeof(COLR)) != hr*sizeof(COLR)) |
498 |
> |
filerr("write"); |
499 |
> |
if (y < vr-1 && lseek(outfd, |
500 |
> |
(long)(hmult-1)*hr*sizeof(COLR), |
501 |
> |
1) == -1) |
502 |
> |
filerr("seek"); |
503 |
|
} |
504 |
+ |
#if NFS |
505 |
+ |
fls.l_type = F_UNLCK; /* release lock */ |
506 |
+ |
if (fcntl(outfd, F_SETLKW, &fls) < 0) |
507 |
+ |
filerr("lock"); |
508 |
+ |
#endif |
509 |
+ |
if (syncfp != NULL) { /* record what's been done */ |
510 |
+ |
sflock(F_WRLCK); |
511 |
+ |
fseek(syncfp, 0L, 2); /* append index */ |
512 |
+ |
fprintf(syncfp, "%4d %4d\n", xpos, ypos); |
513 |
+ |
fflush(syncfp); |
514 |
+ |
/*** Unlock not necessary, since |
515 |
+ |
sflock(F_UNLCK); _exit() or nextpiece() is next ***/ |
516 |
|
} |
517 |
+ |
if (verbose) { /* notify caller */ |
518 |
+ |
printf("%d %d done\n", xpos, ypos); |
519 |
+ |
fflush(stdout); |
520 |
+ |
} |
521 |
+ |
if (pid == -1) /* didn't fork or fork failed */ |
522 |
+ |
return(0); |
523 |
+ |
_exit(0); /* else exit child process (releasing locks) */ |
524 |
|
} |
525 |
+ |
|
526 |
+ |
|
527 |
+ |
filerr(t) /* report file error and exit */ |
528 |
+ |
char *t; |
529 |
+ |
{ |
530 |
+ |
extern char *sys_errlist[]; |
531 |
+ |
|
532 |
+ |
fprintf(stderr, "%s: %s error on file \"%s\": %s\n", |
533 |
+ |
progname, t, outfile, sys_errlist[errno]); |
534 |
+ |
_exit(1); |
535 |
+ |
} |
536 |
+ |
|
537 |
+ |
#endif |