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/* Copyright (c) 1996 Regents of the University of California */ |
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|
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#ifndef lint |
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< |
static char SCCSid[] = "$SunId$ LBL"; |
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> |
static const char RCSid[] = "$Id$"; |
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#endif |
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– |
|
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/* |
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* Routines for persistent rtrace and rpict processes. |
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* |
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* External symbols declared in ray.h |
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*/ |
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|
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/* ==================================================================== |
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* The Radiance Software License, Version 1.0 |
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* |
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* Copyright (c) 1990 - 2002 The Regents of the University of California, |
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* through Lawrence Berkeley National Laboratory. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, |
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* if any, must include the following acknowledgment: |
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* "This product includes Radiance software |
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* (http://radsite.lbl.gov/) |
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* developed by the Lawrence Berkeley National Laboratory |
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* (http://www.lbl.gov/)." |
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* Alternately, this acknowledgment may appear in the software itself, |
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* if and wherever such third-party acknowledgments normally appear. |
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* |
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* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
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* and "The Regents of the University of California" must |
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* not be used to endorse or promote products derived from this |
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* software without prior written permission. For written |
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* permission, please contact [email protected]. |
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* |
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* 5. Products derived from this software may not be called "Radiance", |
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* nor may "Radiance" appear in their name, without prior written |
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* permission of Lawrence Berkeley National Laboratory. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
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* information on Lawrence Berkeley National Laboratory, please see |
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* <http://www.lbl.gov/>. |
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*/ |
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|
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#include "standard.h" |
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#include "random.h" |
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|
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#ifdef F_SETLKW |
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#include "paths.h" |
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#define TIMELIM (8*3600) /* time limit for holding pattern */ |
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#endif |
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|
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< |
extern char *strcpy(), *index(); |
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> |
#ifndef freebsd |
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> |
#define mkfifo(fn,md) mknod(fn, S_IFIFO|(md), 0) |
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#endif |
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|
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extern void io_process(); |
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|
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extern int headismine; /* boolean true if header belongs to me */ |
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|
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extern char *progname; /* global program name */ |
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static char inpname[TEMPLEN+1], outpname[TEMPLEN+1], errname[TEMPLEN+1]; |
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void |
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pfdetach() /* release persist (and header) resources */ |
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{ |
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if (persistfd >= 0) |
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} |
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|
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void |
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pfclean() /* clean up persist files */ |
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{ |
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if (persistfd >= 0) |
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} |
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|
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|
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void |
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pflock(lf) /* place or release exclusive lock on file */ |
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int lf; |
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{ |
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|
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static int got_io; |
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|
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< |
static int sig_io() { got_io++; } |
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> |
static void sig_io() { got_io++; } |
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|
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< |
static int sig_alrm() { quit(0); } |
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> |
static void sig_alrm() { quit(0); } |
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|
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|
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void |
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pfhold() /* holding pattern for idle rendering process */ |
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{ |
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< |
int (*oldalrm)(); |
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> |
void (*oldalrm)(); |
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char buf[512]; |
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register int n; |
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/* close input and output descriptors */ |
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if (errfile == NULL) |
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close(fileno(stderr)); |
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/* create named pipes for input and output */ |
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< |
if (mknod(mktemp(strcpy(inpname,TEMPLATE)), S_IFIFO|0600, 0) < 0) |
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> |
if (mkfifo(mktemp(strcpy(inpname,TEMPLATE)), 0600) < 0) |
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goto createrr; |
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< |
if (mknod(mktemp(strcpy(outpname,TEMPLATE)), S_IFIFO|0600, 0) < 0) |
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> |
if (mkfifo(mktemp(strcpy(outpname,TEMPLATE)), 0600) < 0) |
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goto createrr; |
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if (errfile == NULL && |
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< |
mknod(mktemp(strcpy(errname,TEMPLATE)), S_IFIFO|0600, 0) < 0) |
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> |
mkfifo(mktemp(strcpy(errname,TEMPLATE)), 0600) < 0) |
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goto createrr; |
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sprintf(buf, "%s %d\n%s\n%s\n%s\n", progname, getpid(), |
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inpname, outpname, errname); |
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n = strlen(buf); |
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if (write(persistfd, buf, n) < n) |
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error(SYSTEM, "error writing persist file"); |
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< |
lseek(persistfd, 0L, 0); |
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lseek(persistfd, (off_t)0L, 0); |
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/* wait TIMELIM for someone to signal us */ |
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got_io = 0; |
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signal(SIGIO, sig_io); |
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< |
oldalrm = (int (*)())signal(SIGALRM, sig_alrm); |
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oldalrm = (void (*)())signal(SIGALRM, sig_alrm); |
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alarm(TIMELIM); |
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pflock(0); /* unlock persist file for attach */ |
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while (!got_io) |
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signal(SIGIO, SIG_DFL); |
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pflock(1); /* grab persist file back */ |
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/* someone wants us; reopen stdin and stdout */ |
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/* |
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if (freopen(inpname, "r", stdin) == NULL) |
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goto openerr; |
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if (freopen(outpname, "w", stdout) == NULL) |
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goto openerr; |
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*/ |
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close(0); |
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if (open(inpname, O_RDONLY) != 0) |
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error(INTERNAL, "unexpected stdin file number"); |
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clearerr(stdin); |
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close(1); |
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if (open(outpname, O_WRONLY) != 1) |
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error(INTERNAL, "unexpected stdout file number"); |
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sleep(3); /* give them a chance to open their pipes */ |
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if (errname[0]) { |
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< |
if (freopen(errname, "w", stderr) == NULL) |
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goto openerr; |
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close(2); |
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if (open(errname, O_WRONLY) != 2) |
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error(INTERNAL, "unexpected stderr file number"); |
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unlink(errname); |
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errname[0] = '\0'; |
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} |
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} |
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|
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|
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+ |
void |
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io_process() /* just act as go-between for actual process */ |
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{ |
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register char *cp; |
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char buf[BUFSIZ], *pfin, *pfout, *pferr; |
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int pid, nfds; |
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int fdout, fderr = -1; |
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int status = 0; |
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fd_set readfds, excepfds; |
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/* load persist file */ |
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n = 40; |
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if (!n--) |
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error(USER, "unattended persist file?"); |
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pflock(0); |
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< |
sleep(15); /* wait until ready */ |
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> |
sleep(3+(3*getpid()+random())%13); /* wait until ready */ |
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pflock(1); |
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} |
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if (nr < 0) |
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error(SYSTEM, "error reading persist file"); |
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< |
ftruncate(persistfd, 0L); /* truncate persist file */ |
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ftruncate(persistfd, (off_t)0L); /* truncate persist file */ |
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pfdetach(); /* close & release persist file */ |
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buf[nr] = '\0'; /* parse what we got */ |
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if ((cp = index(buf, ' ')) == NULL) |
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close(fderr); |
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/* close(2); don't close stderr! */ |
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fderr = -1; |
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< |
} else |
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< |
do { /* write it all */ |
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> |
} else { |
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> |
cp[nr] = '\0'; /* deduce status if we can */ |
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> |
n = strlen(progname); |
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> |
if (!strncmp(cp, progname, n) && |
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cp[n++] == ':' && |
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> |
cp[n++] == ' ') { |
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> |
register struct erract *ep; |
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> |
for (ep = erract; ep < erract+NERRS; |
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> |
ep++) |
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> |
if (ep->pre[0] && |
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> |
!strncmp(cp+n, ep->pre, |
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> |
strlen(ep->pre))) { |
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> |
status = ep->ec; |
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> |
break; |
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> |
} |
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> |
} |
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> |
do { /* write message */ |
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if ((n = write(2, cp, nr)) <= 0) |
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goto writerr; |
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cp += n; |
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} while ((nr -= n) > 0); |
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+ |
} |
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} |
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/* renderer stdout */ |
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if (fdout >= 0 && (FD_ISSET(fdout, &readfds) || |
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} while ((nr -= n) > 0); |
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} |
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} |
| 389 |
< |
_exit(0); /* we ought to return renderer error status! */ |
| 389 |
> |
wait(0); /* wait for feeder process */ |
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> |
_exit(status); |
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formerr: |
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error(USER, "format error in persist file"); |
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readerr: |
| 398 |
|
|
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#else |
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|
| 401 |
< |
pfclean() {} |
| 401 |
> |
void pfclean() {} |
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|
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|
#endif |
