1 |
– |
/* Copyright (c) 1996 Regents of the University of California */ |
2 |
– |
|
1 |
|
#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
|
#endif |
6 |
– |
|
4 |
|
/* |
5 |
|
* Routines for persistent rtrace and rpict processes. |
6 |
+ |
* |
7 |
+ |
* External symbols declared in ray.h |
8 |
|
*/ |
9 |
|
|
10 |
+ |
/* ==================================================================== |
11 |
+ |
* The Radiance Software License, Version 1.0 |
12 |
+ |
* |
13 |
+ |
* Copyright (c) 1990 - 2002 The Regents of the University of California, |
14 |
+ |
* through Lawrence Berkeley National Laboratory. All rights reserved. |
15 |
+ |
* |
16 |
+ |
* Redistribution and use in source and binary forms, with or without |
17 |
+ |
* modification, are permitted provided that the following conditions |
18 |
+ |
* are met: |
19 |
+ |
* |
20 |
+ |
* 1. Redistributions of source code must retain the above copyright |
21 |
+ |
* notice, this list of conditions and the following disclaimer. |
22 |
+ |
* |
23 |
+ |
* 2. Redistributions in binary form must reproduce the above copyright |
24 |
+ |
* notice, this list of conditions and the following disclaimer in |
25 |
+ |
* the documentation and/or other materials provided with the |
26 |
+ |
* distribution. |
27 |
+ |
* |
28 |
+ |
* 3. The end-user documentation included with the redistribution, |
29 |
+ |
* if any, must include the following acknowledgment: |
30 |
+ |
* "This product includes Radiance software |
31 |
+ |
* (http://radsite.lbl.gov/) |
32 |
+ |
* developed by the Lawrence Berkeley National Laboratory |
33 |
+ |
* (http://www.lbl.gov/)." |
34 |
+ |
* Alternately, this acknowledgment may appear in the software itself, |
35 |
+ |
* if and wherever such third-party acknowledgments normally appear. |
36 |
+ |
* |
37 |
+ |
* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
38 |
+ |
* and "The Regents of the University of California" must |
39 |
+ |
* not be used to endorse or promote products derived from this |
40 |
+ |
* software without prior written permission. For written |
41 |
+ |
* permission, please contact [email protected]. |
42 |
+ |
* |
43 |
+ |
* 5. Products derived from this software may not be called "Radiance", |
44 |
+ |
* nor may "Radiance" appear in their name, without prior written |
45 |
+ |
* permission of Lawrence Berkeley National Laboratory. |
46 |
+ |
* |
47 |
+ |
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
48 |
+ |
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
49 |
+ |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
50 |
+ |
* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
51 |
+ |
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
52 |
+ |
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
53 |
+ |
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
54 |
+ |
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
55 |
+ |
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
56 |
+ |
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
57 |
+ |
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
58 |
+ |
* SUCH DAMAGE. |
59 |
+ |
* ==================================================================== |
60 |
+ |
* |
61 |
+ |
* This software consists of voluntary contributions made by many |
62 |
+ |
* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
63 |
+ |
* information on Lawrence Berkeley National Laboratory, please see |
64 |
+ |
* <http://www.lbl.gov/>. |
65 |
+ |
*/ |
66 |
+ |
|
67 |
|
#include "standard.h" |
68 |
+ |
#include "random.h" |
69 |
|
|
70 |
|
#ifdef F_SETLKW |
14 |
– |
|
71 |
|
#include "paths.h" |
72 |
+ |
#include "selcall.h" |
73 |
|
#include <signal.h> |
17 |
– |
#include <sys/types.h> |
74 |
|
#include <sys/stat.h> |
75 |
|
|
76 |
|
#ifndef TIMELIM |
77 |
|
#define TIMELIM (8*3600) /* time limit for holding pattern */ |
78 |
|
#endif |
79 |
|
|
80 |
< |
extern char *strcpy(), *index(); |
80 |
> |
#ifndef freebsd |
81 |
> |
#define mkfifo(fn,md) mknod(fn, S_IFIFO|(md), 0) |
82 |
> |
#endif |
83 |
|
|
84 |
+ |
extern void io_process(); |
85 |
+ |
|
86 |
|
extern int headismine; /* boolean true if header belongs to me */ |
87 |
|
|
88 |
|
extern char *progname; /* global program name */ |
95 |
|
static char inpname[TEMPLEN+1], outpname[TEMPLEN+1], errname[TEMPLEN+1]; |
96 |
|
|
97 |
|
|
98 |
+ |
void |
99 |
|
pfdetach() /* release persist (and header) resources */ |
100 |
|
{ |
101 |
|
if (persistfd >= 0) |
109 |
|
} |
110 |
|
|
111 |
|
|
112 |
+ |
void |
113 |
|
pfclean() /* clean up persist files */ |
114 |
|
{ |
115 |
|
if (persistfd >= 0) |
125 |
|
} |
126 |
|
|
127 |
|
|
128 |
+ |
void |
129 |
|
pflock(lf) /* place or release exclusive lock on file */ |
130 |
|
int lf; |
131 |
|
{ |
162 |
|
|
163 |
|
static int got_io; |
164 |
|
|
165 |
< |
static int sig_io() { got_io++; } |
165 |
> |
static void sig_io() { got_io++; } |
166 |
|
|
167 |
< |
static int sig_alrm() { quit(0); } |
167 |
> |
static void sig_alrm() { quit(0); } |
168 |
|
|
169 |
|
|
170 |
+ |
void |
171 |
|
pfhold() /* holding pattern for idle rendering process */ |
172 |
|
{ |
173 |
< |
int (*oldalrm)(); |
173 |
> |
void (*oldalrm)(); |
174 |
|
char buf[512]; |
175 |
|
register int n; |
176 |
|
/* close input and output descriptors */ |
177 |
|
close(fileno(stdin)); |
178 |
|
close(fileno(stdout)); |
179 |
+ |
if (errfile == NULL) |
180 |
+ |
close(fileno(stderr)); |
181 |
|
/* create named pipes for input and output */ |
182 |
< |
if (mknod(mktemp(strcpy(inpname,TEMPLATE)), S_IFIFO|0600, 0) < 0) |
182 |
> |
if (mkfifo(mktemp(strcpy(inpname,TEMPLATE)), 0600) < 0) |
183 |
|
goto createrr; |
184 |
< |
if (mknod(mktemp(strcpy(outpname,TEMPLATE)), S_IFIFO|0600, 0) < 0) |
184 |
> |
if (mkfifo(mktemp(strcpy(outpname,TEMPLATE)), 0600) < 0) |
185 |
|
goto createrr; |
186 |
|
if (errfile == NULL && |
187 |
< |
mknod(mktemp(strcpy(errname,TEMPLATE)), S_IFIFO|0600, 0) < 0) |
187 |
> |
mkfifo(mktemp(strcpy(errname,TEMPLATE)), 0600) < 0) |
188 |
|
goto createrr; |
189 |
|
sprintf(buf, "%s %d\n%s\n%s\n%s\n", progname, getpid(), |
190 |
|
inpname, outpname, errname); |
191 |
|
n = strlen(buf); |
192 |
|
if (write(persistfd, buf, n) < n) |
193 |
|
error(SYSTEM, "error writing persist file"); |
194 |
+ |
lseek(persistfd, (off_t)0L, 0); |
195 |
|
/* wait TIMELIM for someone to signal us */ |
196 |
|
got_io = 0; |
197 |
|
signal(SIGIO, sig_io); |
198 |
< |
oldalrm = (int (*)())signal(SIGALRM, sig_alrm); |
198 |
> |
oldalrm = (void (*)())signal(SIGALRM, sig_alrm); |
199 |
|
alarm(TIMELIM); |
200 |
|
pflock(0); /* unlock persist file for attach */ |
201 |
|
while (!got_io) |
202 |
|
pause(); /* wait for attach */ |
136 |
– |
pflock(1); /* grab persist file right back! */ |
203 |
|
alarm(0); /* turn off alarm */ |
204 |
|
signal(SIGALRM, oldalrm); |
205 |
|
signal(SIGIO, SIG_DFL); |
206 |
< |
if (lseek(persistfd, 0L, 0) < 0 || ftruncate(persistfd, 0L) < 0) |
141 |
< |
error(SYSTEM, "seek/truncate error on persist file"); |
206 |
> |
pflock(1); /* grab persist file back */ |
207 |
|
/* someone wants us; reopen stdin and stdout */ |
208 |
+ |
/* |
209 |
|
if (freopen(inpname, "r", stdin) == NULL) |
210 |
|
goto openerr; |
211 |
|
if (freopen(outpname, "w", stdout) == NULL) |
212 |
|
goto openerr; |
213 |
+ |
*/ |
214 |
+ |
close(0); |
215 |
+ |
if (open(inpname, O_RDONLY) != 0) |
216 |
+ |
error(INTERNAL, "unexpected stdin file number"); |
217 |
+ |
clearerr(stdin); |
218 |
+ |
close(1); |
219 |
+ |
if (open(outpname, O_WRONLY) != 1) |
220 |
+ |
error(INTERNAL, "unexpected stdout file number"); |
221 |
+ |
sleep(3); /* give them a chance to open their pipes */ |
222 |
|
if (errname[0]) { |
223 |
< |
if (freopen(errname, "w", stderr) == NULL) |
224 |
< |
goto openerr; |
223 |
> |
close(2); |
224 |
> |
if (open(errname, O_WRONLY) != 2) |
225 |
> |
error(INTERNAL, "unexpected stderr file number"); |
226 |
|
unlink(errname); |
227 |
|
errname[0] = '\0'; |
228 |
|
} |
238 |
|
} |
239 |
|
|
240 |
|
|
241 |
< |
io_process() /* just act as conduits to and from actual process */ |
241 |
> |
void |
242 |
> |
io_process() /* just act as go-between for actual process */ |
243 |
|
{ |
244 |
|
register char *cp; |
245 |
|
register int nr, n; |
246 |
< |
char buf[512], *pfin, *pfout, *pferr; |
247 |
< |
int pid, pid2 = -1; |
246 |
> |
char buf[BUFSIZ], *pfin, *pfout, *pferr; |
247 |
> |
int pid, nfds; |
248 |
> |
int fdout, fderr = -1; |
249 |
> |
int status = 0; |
250 |
> |
fd_set readfds, excepfds; |
251 |
|
/* load persist file */ |
252 |
+ |
n = 40; |
253 |
|
while ((nr = read(persistfd, buf, sizeof(buf)-1)) == 0) { |
254 |
+ |
if (!n--) |
255 |
+ |
error(USER, "unattended persist file?"); |
256 |
|
pflock(0); |
257 |
< |
sleep(15); /* wait until ready */ |
257 |
> |
sleep(3+(3*getpid()+random())%13); /* wait until ready */ |
258 |
|
pflock(1); |
259 |
|
} |
177 |
– |
pfdetach(); /* close persist file */ |
260 |
|
if (nr < 0) |
261 |
|
error(SYSTEM, "error reading persist file"); |
262 |
< |
buf[nr] = '\0'; |
262 |
> |
ftruncate(persistfd, (off_t)0L); /* truncate persist file */ |
263 |
> |
pfdetach(); /* close & release persist file */ |
264 |
> |
buf[nr] = '\0'; /* parse what we got */ |
265 |
|
if ((cp = index(buf, ' ')) == NULL) |
266 |
|
goto formerr; |
267 |
|
*cp++ = '\0'; |
287 |
|
sprintf(errmsg, "persist file for %s, not %s", buf, progname); |
288 |
|
error(USER, errmsg); |
289 |
|
} |
290 |
< |
/* wake up rendering process */ |
290 |
> |
/* wake up rendering process */ |
291 |
|
if (kill(pid, SIGIO) < 0) |
292 |
|
error(SYSTEM, "cannot signal rendering process in io_process"); |
293 |
< |
pid = fork(); /* fork i/o process */ |
293 |
> |
/* fork child feeder process */ |
294 |
> |
pid = fork(); |
295 |
|
if (pid < 0) |
296 |
< |
goto forkerr; |
297 |
< |
/* connect to appropriate pipe */ |
298 |
< |
if (pid) { /* parent passes renderer output */ |
299 |
< |
close(0); |
300 |
< |
if (pferr[0]) { |
301 |
< |
pid2 = fork(); /* fork another for stderr */ |
302 |
< |
if (pid2 < 0) |
303 |
< |
goto forkerr; |
296 |
> |
error(SYSTEM, "fork failed in io_process"); |
297 |
> |
if (pid == 0) { /* feeder loop */ |
298 |
> |
int fdin; |
299 |
> |
close(1); /* open input pipe */ |
300 |
> |
if ((fdin = open(pfin, O_WRONLY)) < 0) |
301 |
> |
error(SYSTEM, "cannot open feed pipe in io_process"); |
302 |
> |
/* renderer stdin */ |
303 |
> |
while ((nr = read(0, cp=buf, sizeof(buf))) > 0) { |
304 |
> |
do { |
305 |
> |
if ((n = write(fdin, cp, nr)) <= 0) |
306 |
> |
goto writerr; |
307 |
> |
cp += n; |
308 |
> |
} while ((nr -= n) > 0); |
309 |
|
} |
310 |
< |
if (pid2) { /* parent is still stdout */ |
311 |
< |
if (open(pfout, O_RDONLY) != 0) |
312 |
< |
error(SYSTEM, |
313 |
< |
"cannot open output pipe in io_process"); |
314 |
< |
} else { /* second child is stderr */ |
315 |
< |
if (open(pferr, O_RDONLY) != 0) |
316 |
< |
error(SYSTEM, |
317 |
< |
"cannot open error pipe in io_process"); |
318 |
< |
dup2(2, 1); /* attach stdout to stderr */ |
310 |
> |
if (nr < 0) |
311 |
> |
goto readerr; |
312 |
> |
_exit(0); |
313 |
> |
} |
314 |
> |
close(0); |
315 |
> |
/* open output pipes, in order */ |
316 |
> |
if ((fdout = open(pfout, O_RDONLY)) < 0) |
317 |
> |
error(SYSTEM, "cannot open output pipe in io_process"); |
318 |
> |
if (pferr[0] && (fderr = open(pferr, O_RDONLY)) < 0) |
319 |
> |
error(SYSTEM, "cannot open error pipe in io_process"); |
320 |
> |
for ( ; ; ) { /* eater loop */ |
321 |
> |
FD_ZERO(&readfds); |
322 |
> |
FD_ZERO(&excepfds); |
323 |
> |
nfds = 0; |
324 |
> |
if (fdout >= 0) { |
325 |
> |
FD_SET(fdout, &readfds); |
326 |
> |
FD_SET(fdout, &excepfds); |
327 |
> |
nfds = fdout+1; |
328 |
|
} |
329 |
< |
} else { /* child passes renderer input */ |
330 |
< |
close(1); |
331 |
< |
if (open(pfin, O_WRONLY) != 1) |
332 |
< |
error(SYSTEM, "cannot open input pipe in io_process"); |
329 |
> |
if (fderr >= 0) { |
330 |
> |
FD_SET(fderr, &readfds); |
331 |
> |
FD_SET(fderr, &excepfds); |
332 |
> |
nfds = fderr+1; |
333 |
> |
} |
334 |
> |
if (nfds == 0) |
335 |
> |
break; /* all done, exit */ |
336 |
> |
if (select(nfds, &readfds, NULL, &excepfds, NULL) < 0) |
337 |
> |
error(SYSTEM, "error in select call in io_process"); |
338 |
> |
/* renderer stderr */ |
339 |
> |
if (fderr >= 0 && (FD_ISSET(fderr, &readfds) || |
340 |
> |
FD_ISSET(fderr, &excepfds))) { |
341 |
> |
nr = read(fderr, cp=buf, sizeof(buf)); |
342 |
> |
if (nr < 0) |
343 |
> |
goto readerr; |
344 |
> |
if (nr == 0) { |
345 |
> |
close(fderr); |
346 |
> |
/* close(2); don't close stderr! */ |
347 |
> |
fderr = -1; |
348 |
> |
} else { |
349 |
> |
cp[nr] = '\0'; /* deduce status if we can */ |
350 |
> |
n = strlen(progname); |
351 |
> |
if (!strncmp(cp, progname, n) && |
352 |
> |
cp[n++] == ':' && |
353 |
> |
cp[n++] == ' ') { |
354 |
> |
register struct erract *ep; |
355 |
> |
for (ep = erract; ep < erract+NERRS; |
356 |
> |
ep++) |
357 |
> |
if (ep->pre[0] && |
358 |
> |
!strncmp(cp+n, ep->pre, |
359 |
> |
strlen(ep->pre))) { |
360 |
> |
status = ep->ec; |
361 |
> |
break; |
362 |
> |
} |
363 |
> |
} |
364 |
> |
do { /* write message */ |
365 |
> |
if ((n = write(2, cp, nr)) <= 0) |
366 |
> |
goto writerr; |
367 |
> |
cp += n; |
368 |
> |
} while ((nr -= n) > 0); |
369 |
> |
} |
370 |
> |
} |
371 |
> |
/* renderer stdout */ |
372 |
> |
if (fdout >= 0 && (FD_ISSET(fdout, &readfds) || |
373 |
> |
FD_ISSET(fdout, &excepfds))) { |
374 |
> |
nr = read(fdout, cp=buf, sizeof(buf)); |
375 |
> |
if (nr < 0) |
376 |
> |
goto readerr; |
377 |
> |
if (nr == 0) { /* EOF */ |
378 |
> |
close(fdout); |
379 |
> |
close(1); |
380 |
> |
fdout = -1; |
381 |
> |
} else |
382 |
> |
do { /* write it all */ |
383 |
> |
if ((n = write(1, cp, nr)) <= 0) |
384 |
> |
goto writerr; |
385 |
> |
cp += n; |
386 |
> |
} while ((nr -= n) > 0); |
387 |
> |
} |
388 |
|
} |
389 |
< |
/* pass input to output */ |
390 |
< |
/* read as much as we can, write all of it */ |
237 |
< |
while ((nr = read(0, cp=buf, sizeof(buf))) > 0) |
238 |
< |
do { |
239 |
< |
if ((n = write(1, cp, nr)) <= 0) |
240 |
< |
error(SYSTEM, "write error in io_process"); |
241 |
< |
cp += n; |
242 |
< |
} while ((nr -= n) > 0); |
243 |
< |
if (nr < 0) |
244 |
< |
error(SYSTEM, "read error in io_process"); |
245 |
< |
close(0); /* close input */ |
246 |
< |
close(1); /* close output */ |
247 |
< |
if (pid) /* parent waits for stdin child */ |
248 |
< |
wait(0); |
249 |
< |
if (pid2 > 0) /* wait for stderr child also */ |
250 |
< |
wait(0); |
251 |
< |
_exit(0); /* all done, exit (not quit!) */ |
389 |
> |
wait(0); /* wait for feeder process */ |
390 |
> |
_exit(status); |
391 |
|
formerr: |
392 |
|
error(USER, "format error in persist file"); |
393 |
< |
forkerr: |
394 |
< |
error(SYSTEM, "fork failed in io_process"); |
393 |
> |
readerr: |
394 |
> |
error(SYSTEM, "read error in io_process"); |
395 |
> |
writerr: |
396 |
> |
error(SYSTEM, "write error in io_process"); |
397 |
|
} |
398 |
|
|
399 |
|
#else |
400 |
|
|
401 |
< |
pfclean() {} |
401 |
> |
void pfclean() {} |
402 |
|
|
403 |
|
#endif |