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root/radiance/ray/src/rt/persist.c
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Comparing ray/src/rt/persist.c (file contents):
Revision 2.29 by schorsch, Mon Jun 30 14:59:12 2003 UTC vs.
Revision 2.40 by schorsch, Sun Apr 27 17:22:49 2008 UTC

# Line 12 | Line 12 | static const char      RCSid[] = "$Id$";
12   #include <string.h>
13   #include <signal.h>
14   #include <sys/stat.h>
15 < #ifdef _WIN32
16 < #include <process.h> /* getpid() */
15 > #include <sys/types.h>
16 >
17 > #include "platform.h"
18 > #ifndef NON_POSIX /* XXX need abstraction for process management */
19 > #include <sys/wait.h>
20   #endif
21  
22 + #include "rtprocess.h" /* getpid() */
23   #include "standard.h"
24   #include "random.h"
25 + #include "ray.h"
26  
27   #ifdef F_SETLKW
28   #include "paths.h"
# Line 27 | Line 32 | static const char      RCSid[] = "$Id$";
32   #define TIMELIM         (8*3600)        /* time limit for holding pattern */
33   #endif
34  
30 – #ifndef freebsd
31 – #define mkfifo(fn,md)   mknod(fn, S_IFIFO|(md), 0)
32 – #endif
33 –
34 – extern void     io_process();
35 –
35   extern int      headismine;     /* boolean true if header belongs to me */
37 –
36   extern char     *progname;      /* global program name */
39 –
37   extern char     *errfile;       /* global error file name */
41 –
38   static char     *persistfname = NULL;   /* persist file name */
39   static int      persistfd = -1;         /* persist file descriptor */
44 –
40   static char     inpname[TEMPLEN+1], outpname[TEMPLEN+1], errname[TEMPLEN+1];
41  
42 + typedef void (sighandler_t)(int);
43 + static sighandler_t sig_io;
44 + static sighandler_t sig_alrm;
45  
46 < void
47 < pfdetach()              /* release persist (and header) resources */
46 >
47 > extern void
48 > pfdetach(void)          /* release persist (and header) resources */
49   {
50          if (persistfd >= 0)
51                  close(persistfd);
# Line 59 | Line 58 | pfdetach()             /* release persist (and header) resources
58   }
59  
60  
61 < void
62 < pfclean()               /* clean up persist files */
61 > extern void
62 > pfclean(void)           /* clean up persist files */
63   {
64          if (persistfd >= 0)
65                  close(persistfd);
# Line 75 | Line 74 | pfclean()              /* clean up persist files */
74   }
75  
76  
77 < void
78 < pflock(lf)              /* place or release exclusive lock on file */
79 < int     lf;
77 > extern void
78 > pflock(         /* place or release exclusive lock on file */
79 >        int     lf
80 > )
81   {
82          struct flock    fls;
83  
# Line 90 | Line 90 | int    lf;
90   }
91  
92  
93 < persistfile(pfn)        /* open persist file and lock it */
94 < char    *pfn;
93 > extern void
94 > persistfile(    /* open persist file and lock it */
95 >        char    *pfn
96 > )
97   {
98          persistfd = open(pfn, O_WRONLY|O_CREAT|O_EXCL, 0644);
99          if (persistfd >= 0) {
# Line 112 | Line 114 | char   *pfn;
114  
115   static int      got_io;
116  
117 < static void sig_io() { got_io++; }
117 > static void sig_io(int i) { got_io++; }
118  
119 < static void sig_alrm() { quit(0); }
119 > static void sig_alrm(int i) { quit(0); }
120  
121  
122 < void
123 < pfhold()                /* holding pattern for idle rendering process */
122 > extern void
123 > pfhold(void)            /* holding pattern for idle rendering process */
124   {
125 <        void    (*oldalrm)();
125 >        sighandler_t    *oldalrm;
126          char    buf[512];
127          register int    n;
128                                  /* close input and output descriptors */
129 <        close(fileno(stdin));
130 <        close(fileno(stdout));
129 >        close(0);
130 >        close(1);
131          if (errfile == NULL)
132 <                close(fileno(stderr));
132 >                close(2);
133                                  /* create named pipes for input and output */
134          if (mkfifo(mktemp(strcpy(inpname,TEMPLATE)), 0600) < 0)
135                  goto createrr;
# Line 141 | Line 143 | pfhold()               /* holding pattern for idle rendering proces
143          n = strlen(buf);
144          if (write(persistfd, buf, n) < n)
145                  error(SYSTEM, "error writing persist file");
146 <        lseek(persistfd, (off_t)0L, 0);
146 >        lseek(persistfd, (off_t)0, SEEK_SET);
147                                  /* wait TIMELIM for someone to signal us */
148          got_io = 0;
149          signal(SIGIO, sig_io);
150 <        oldalrm = (void (*)())signal(SIGALRM, sig_alrm);
150 >        oldalrm = signal(SIGALRM, sig_alrm);
151          alarm(TIMELIM);
152          pflock(0);                      /* unlock persist file for attach */
153          while (!got_io)
# Line 188 | Line 190 | openerr:
190   }
191  
192  
193 < void
194 < io_process()            /* just act as go-between for actual process */
193 > extern void
194 > io_process(void)                /* just act as go-between for actual process */
195   {
196          register char   *cp;
197          register int    nr, n;
# Line 338 | Line 340 | io_process()           /* just act as go-between for actual pro
340                                  } while ((nr -= n) > 0);
341                  }
342          }
343 <        wait(0);                /* wait for feeder process */
343 >        kill(pid, SIGTERM);     /* no more process to feed, so... */
344 >        waitpid(pid, 0, 0);     /* wait for feeder process */
345          _exit(status);
346   formerr:
347          error(USER, "format error in persist file");
# Line 350 | Line 353 | writerr:
353  
354   #else
355  
356 < void pfclean() {}
356 > extern void pfclean(void) {}
357  
358   #endif

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