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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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#ifndef lint |
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< |
static char SCCSid[] = "$SunId$ SGI"; |
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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 managing holodeck files |
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* |
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#include "holo.h" |
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|
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#ifndef CACHESIZE |
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< |
#define CACHESIZE 16 /* default cache size (Mbytes, 0==inf) */ |
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> |
#ifdef SMLMEM |
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> |
#define CACHESIZE 5 |
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> |
#else |
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> |
#define CACHESIZE 17 /* default cache size (Mbytes, 0==inf) */ |
| 17 |
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#endif |
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+ |
#endif |
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#ifndef FREEBEAMS |
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#define FREEBEAMS 1500 /* maximum beams to free at a time */ |
| 21 |
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#endif |
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#ifndef PCTFREE |
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#define PCTFREE 15 /* maximum fraction to free (%) */ |
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#endif |
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< |
#ifndef MAXFRAG |
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< |
#define MAXFRAG 32767 /* maximum fragments/file to track (0==inf) */ |
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> |
#ifndef MAXFRAGB |
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> |
#define MAXFRAGB 16 /* fragment blocks/file to track (0==inf) */ |
| 27 |
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#endif |
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+ |
#ifndef FF_DEFAULT |
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+ |
/* when to free a beam fragment */ |
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+ |
#define FF_DEFAULT (FF_WRITE|FF_KILL) |
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+ |
#endif |
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#ifndef MINDIRSEL |
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/* minimum directory seek length */ |
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#define MINDIRSEL (4*BUFSIZ/sizeof(BEAMI)) |
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#define read readbuf |
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#endif |
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|
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< |
#define FRAGBLK 256 /* number of fragments to allocate at a time */ |
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> |
#define FRAGBLK 512 /* number of fragments to allocate at a time */ |
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|
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+ |
int hdfragflags = FF_DEFAULT; /* tells when to free fragments */ |
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unsigned hdcachesize = CACHESIZE*1024*1024; /* target cache size */ |
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< |
unsigned long hdclock; /* clock value */ |
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> |
unsigned long hdclock; /* clock value */ |
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|
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HOLO *hdlist[HDMAX+1]; /* holodeck pointers (NULL term.) */ |
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|
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static struct fraglist { |
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short nlinks; /* number of holodeck sections using us */ |
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< |
short writerr; /* write error encountered */ |
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> |
short writable; /* 0 read-only, <0 write error encountered */ |
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int nfrags; /* number of known fragments */ |
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BEAMI *fi; /* fragments, descending file position */ |
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< |
long flen; /* last known file length */ |
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> |
off_t flen; /* last known file length */ |
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} *hdfragl; /* fragment lists, indexed by file descriptor */ |
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|
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static int nhdfragls; /* size of hdfragl array */ |
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|
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|
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HOLO * |
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hdalloc(hproto) /* allocate and set holodeck section based on grid */ |
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HDGRID *hproto; |
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{ |
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HOLO hdhead; |
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+ |
register HOLO *hp; |
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+ |
int n; |
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/* copy grid to temporary header */ |
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bcopy((void *)hproto, (void *)&hdhead, sizeof(HDGRID)); |
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/* compute grid vectors and sizes */ |
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hdcompgrid(&hdhead); |
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/* allocate header with directory */ |
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n = sizeof(HOLO)+nbeams(&hdhead)*sizeof(BEAMI); |
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+ |
if ((hp = (HOLO *)malloc(n)) == NULL) |
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+ |
return(NULL); |
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/* copy header information */ |
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copystruct(hp, &hdhead); |
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/* allocate and clear beam list */ |
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hp->bl = (BEAM **)malloc((nbeams(hp)+1)*sizeof(BEAM *)+sizeof(BEAM)); |
| 80 |
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if (hp->bl == NULL) { |
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free((void *)hp); |
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return(NULL); |
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} |
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bzero((void *)hp->bl, (nbeams(hp)+1)*sizeof(BEAM *)+sizeof(BEAM)); |
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hp->bl[0] = (BEAM *)(hp->bl+nbeams(hp)+1); /* set blglob(hp) */ |
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hp->fd = -1; |
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hp->dirty = 0; |
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hp->priv = NULL; |
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/* clear beam directory */ |
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bzero((void *)hp->bi, (nbeams(hp)+1)*sizeof(BEAMI)); |
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return(hp); /* all is well */ |
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} |
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|
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|
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char * |
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hdrealloc(ptr, siz, rout) /* (re)allocate memory, retry then error */ |
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char *ptr; |
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register char *newp; |
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/* call malloc/realloc */ |
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if (ptr == NULL) newp = (char *)malloc(siz); |
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< |
else newp = (char *)realloc(ptr, siz); |
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> |
else newp = (char *)realloc((void *)ptr, siz); |
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/* check success */ |
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if (newp == NULL && rout != NULL) { |
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hdfreecache(25, NULL); /* free some memory */ |
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} |
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|
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< |
hdattach(fd) /* start tracking file fragments for some section */ |
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> |
hdattach(fd, wr) /* start tracking file fragments for some section */ |
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register int fd; |
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+ |
int wr; |
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{ |
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if (fd >= nhdfragls) { |
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hdfragl = (struct fraglist *)hdrealloc((char *)hdfragl, |
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(fd+1)*sizeof(struct fraglist), "hdattach"); |
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< |
bzero((char *)(hdfragl+nhdfragls), |
| 126 |
> |
bzero((void *)(hdfragl+nhdfragls), |
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(fd+1-nhdfragls)*sizeof(struct fraglist)); |
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nhdfragls = fd+1; |
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} |
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hdfragl[fd].nlinks++; |
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< |
hdfragl[fd].flen = lseek(fd, 0L, 2); /* get file length */ |
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> |
hdfragl[fd].writable = wr; /* set writable flag */ |
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> |
hdfragl[fd].flen = lseek(fd, (off_t)0, 2); /* get file length */ |
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} |
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|
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|
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if (fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks) |
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return; |
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if (!--hdfragl[fd].nlinks && hdfragl[fd].nfrags) { |
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< |
free((char *)hdfragl[fd].fi); |
| 145 |
> |
free((void *)hdfragl[fd].fi); |
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hdfragl[fd].fi = NULL; |
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hdfragl[fd].nfrags = 0; |
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} |
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int fd; /* corresponding file descriptor */ |
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HDGRID *hproto; /* holodeck section grid */ |
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{ |
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< |
long rtrunc; |
| 158 |
< |
long fpos; |
| 157 |
> |
off_t rtrunc; |
| 158 |
> |
off_t fpos; |
| 159 |
> |
int writable; |
| 160 |
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register HOLO *hp; |
| 161 |
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register int n; |
| 162 |
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/* prepare for system errors */ |
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errno = 0; |
| 164 |
< |
if ((fpos = lseek(fd, 0L, 1)) < 0) |
| 164 |
> |
if ((fpos = lseek(fd, (off_t)0, 1)) < 0) |
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error(SYSTEM, "cannot determine holodeck file position"); |
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if (hproto == NULL) { /* assume we're loading it */ |
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HDGRID hpr; |
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error(WARNING, "dirty holodeck section"); |
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break; |
| 184 |
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} |
| 185 |
< |
} else { /* assume we're creating it */ |
| 185 |
> |
/* check writability */ |
| 186 |
> |
if (fd < nhdfragls && hdfragl[fd].nlinks) |
| 187 |
> |
writable = hdfragl[fd].writable; |
| 188 |
> |
else |
| 189 |
> |
writable = lseek(fd, fpos, 0) == fpos && |
| 190 |
> |
write(fd, (char *)hp, sizeof(HDGRID)) == |
| 191 |
> |
sizeof(HDGRID); |
| 192 |
> |
} else { /* else assume we're creating it */ |
| 193 |
|
if ((hp = hdalloc(hproto)) == NULL) |
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goto memerr; |
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/* write header and skeleton */ |
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sizeof(HDGRID) || |
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write(fd, (char *)(hp->bi+1), n) != n) |
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error(SYSTEM, "cannot write header to holodeck file"); |
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+ |
writable = 1; |
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} |
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hp->fd = fd; |
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hp->dirty = 0; |
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biglob(hp)->fo = fpos + sizeof(HDGRID); |
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/* start tracking fragments */ |
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< |
hdattach(fd); |
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> |
hdattach(fd, writable); |
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/* check rays on disk */ |
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fpos = hdfilen(fd); |
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biglob(hp)->nrd = rtrunc = 0; |
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} |
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|
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|
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< |
markdirty(hp, i) /* mark holodeck directory position dirty */ |
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> |
hdmarkdirty(hp, i) /* mark holodeck directory position dirty */ |
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register HOLO *hp; |
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int i; |
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{ |
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if (lseek(hp->fd, biglob(hp)->fo+(i-1)*sizeof(BEAMI), 0) < 0 |
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|| write(hp->fd, (char *)&smudge, |
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sizeof(BEAMI)) != sizeof(BEAMI)) |
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< |
error(SYSTEM, "seek/write error in markdirty"); |
| 248 |
> |
error(SYSTEM, "seek/write error in hdmarkdirty"); |
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hp->dirseg[0].s = i; |
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hp->dirseg[0].n = 1; |
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return; |
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} |
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|
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|
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< |
long |
| 349 |
> |
off_t |
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hdfilen(fd) /* return file length for fd */ |
| 351 |
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int fd; |
| 352 |
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{ |
| 353 |
< |
long fpos, flen; |
| 353 |
> |
off_t fpos, flen; |
| 354 |
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|
| 355 |
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if (fd < 0) |
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return(-1); |
| 357 |
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if (fd >= nhdfragls || !hdfragl[fd].nlinks) { |
| 358 |
< |
if ((fpos = lseek(fd, 0L, 1)) < 0) |
| 358 |
> |
if ((fpos = lseek(fd, (off_t)0, 1)) < 0) |
| 359 |
|
return(-1); |
| 360 |
< |
flen = lseek(fd, 0L, 2); |
| 360 |
> |
flen = lseek(fd, (off_t)0, 2); |
| 361 |
|
lseek(fd, fpos, 0); |
| 362 |
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return(flen); |
| 363 |
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} |
| 365 |
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} |
| 366 |
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|
| 367 |
|
|
| 368 |
< |
long |
| 368 |
> |
off_t |
| 369 |
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hdfiluse(fd, all) /* compute file usage (in bytes) */ |
| 370 |
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int fd; /* open file descriptor to check */ |
| 371 |
|
int all; /* include overhead and unflushed data */ |
| 372 |
|
{ |
| 373 |
< |
long total = 0; |
| 373 |
> |
off_t total = 0; |
| 374 |
|
register int i, j; |
| 375 |
|
|
| 376 |
|
for (j = 0; hdlist[j] != NULL; j++) { |
| 400 |
|
RAYVAL *p; |
| 401 |
|
int n; |
| 402 |
|
|
| 403 |
< |
if (nr <= 0) |
| 404 |
< |
return(NULL); |
| 405 |
< |
if (i < 1 | i > nbeams(hp)) |
| 355 |
< |
error(CONSISTENCY, "bad beam index given to hdnewrays"); |
| 403 |
> |
if (nr <= 0) return(NULL); |
| 404 |
> |
CHECK(i < 1 | i > nbeams(hp), |
| 405 |
> |
CONSISTENCY, "bad beam index given to hdnewrays"); |
| 406 |
|
if (hp->bl[i] != NULL) |
| 407 |
|
hp->bl[i]->tick = hdclock; /* preempt swap */ |
| 408 |
|
if (hdcachesize > 0 && hdmemuse(0) >= hdcachesize) |
| 411 |
|
n = hp->bi[i].nrd + nr; |
| 412 |
|
hp->bl[i] = (BEAM *)hdrealloc(NULL, hdbsiz(n), "hdnewrays"); |
| 413 |
|
blglob(hp)->nrm += n; |
| 414 |
< |
if (n = hp->bl[i]->nrm = hp->bi[i].nrd) { |
| 414 |
> |
if ((n = hp->bl[i]->nrm = hp->bi[i].nrd)) { |
| 415 |
|
errno = 0; |
| 416 |
|
if (lseek(hp->fd, hp->bi[i].fo, 0) < 0) |
| 417 |
|
error(SYSTEM, "seek error on holodeck file"); |
| 425 |
|
hdbsiz(hp->bl[i]->nrm + nr), "hdnewrays"); |
| 426 |
|
blglob(hp)->nrm += nr; |
| 427 |
|
} |
| 428 |
+ |
if (hdfragflags&FF_ALLOC && hp->bi[i].nrd) |
| 429 |
+ |
hdfreefrag(hp, i); /* relinquish old fragment */ |
| 430 |
|
p = hdbray(hp->bl[i]) + hp->bl[i]->nrm; |
| 431 |
|
hp->bl[i]->nrm += nr; /* update in-core structure */ |
| 432 |
< |
bzero((char *)p, nr*sizeof(RAYVAL)); |
| 432 |
> |
bzero((void *)p, nr*sizeof(RAYVAL)); |
| 433 |
|
blglob(hp)->tick = hp->bl[i]->tick = hdclock++; /* update LRU clock */ |
| 434 |
|
return(p); /* point to new rays */ |
| 435 |
|
} |
| 442 |
|
{ |
| 443 |
|
register int n; |
| 444 |
|
|
| 445 |
< |
if (i < 1 | i > nbeams(hp)) |
| 446 |
< |
error(CONSISTENCY, "bad beam index given to hdgetbeam"); |
| 445 |
> |
CHECK(i < 1 | i > nbeams(hp), |
| 446 |
> |
CONSISTENCY, "bad beam index given to hdgetbeam"); |
| 447 |
|
if (hp->bl[i] == NULL) { /* load from disk */ |
| 448 |
|
if (!(n = hp->bi[i].nrd)) |
| 449 |
|
return(NULL); |
| 457 |
|
n *= sizeof(RAYVAL); |
| 458 |
|
if (read(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) |
| 459 |
|
error(SYSTEM, "error reading beam from holodeck file"); |
| 460 |
+ |
if (hdfragflags&FF_READ) |
| 461 |
+ |
hdfreefrag(hp, i); /* relinquish old frag. */ |
| 462 |
|
} |
| 463 |
|
blglob(hp)->tick = hp->bl[i]->tick = hdclock++; /* update LRU clock */ |
| 464 |
|
return(hp->bl[i]); |
| 469 |
|
hdfilord(hb1, hb2) /* order beams for quick loading */ |
| 470 |
|
register HDBEAMI *hb1, *hb2; |
| 471 |
|
{ |
| 472 |
< |
register long c; |
| 472 |
> |
register off_t c; |
| 473 |
|
/* residents go first */ |
| 474 |
|
if (hb2->h->bl[hb2->b] != NULL) |
| 475 |
|
return(hb1->h->bl[hb1->b] == NULL); |
| 476 |
|
if (hb1->h->bl[hb1->b] != NULL) |
| 477 |
|
return(-1); |
| 478 |
|
/* otherwise sort by file descriptor */ |
| 479 |
< |
if ((c = hb1->h->fd - hb2->h->fd)) |
| 480 |
< |
return(c); |
| 479 |
> |
if (hb1->h->fd != hb2->h->fd) |
| 480 |
> |
return(hb1->h->fd - hb2->h->fd); |
| 481 |
|
/* then by position in file */ |
| 482 |
|
c = hb1->h->bi[hb1->b].fo - hb2->h->bi[hb2->b].fo; |
| 483 |
|
return(c > 0 ? 1 : c < 0 ? -1 : 0); |
| 496 |
|
/* precheck consistency */ |
| 497 |
|
if (n <= 0) return; |
| 498 |
|
for (i = n; i--; ) |
| 499 |
< |
if (hb[i].h == NULL || hb[i].b < 1 | hb[i].b > nbeams(hb[i].h)) |
| 499 |
> |
if (hb[i].h==NULL || hb[i].b<1 | hb[i].b>nbeams(hb[i].h)) |
| 500 |
|
error(CONSISTENCY, "bad beam in hdloadbeams"); |
| 501 |
|
/* sort list for optimal access */ |
| 502 |
< |
qsort((char *)hb, n, sizeof(HDBEAMI), hdfilord); |
| 502 |
> |
qsort((void *)hb, n, sizeof(HDBEAMI), hdfilord); |
| 503 |
|
bytesloaded = 0; /* run through loaded beams */ |
| 504 |
|
for ( ; n && (bp = hb->h->bl[hb->b]) != NULL; n--, hb++) { |
| 505 |
|
bp->tick = hdclock; /* preempt swap */ |
| 529 |
|
} |
| 530 |
|
|
| 531 |
|
|
| 532 |
< |
hdfreefrag(fd, bi) /* free a file fragment */ |
| 533 |
< |
int fd; |
| 534 |
< |
register BEAMI *bi; |
| 532 |
> |
int |
| 533 |
> |
hdfreefrag(hp, i) /* free a file fragment */ |
| 534 |
> |
HOLO *hp; |
| 535 |
> |
int i; |
| 536 |
|
{ |
| 537 |
+ |
register BEAMI *bi = &hp->bi[i]; |
| 538 |
|
register struct fraglist *f; |
| 539 |
|
register int j, k; |
| 540 |
|
|
| 541 |
< |
if (bi->nrd == 0) |
| 542 |
< |
return; |
| 543 |
< |
#ifdef DEBUG |
| 544 |
< |
if (fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks) |
| 545 |
< |
error(CONSISTENCY, "bad file descriptor in hdfreefrag"); |
| 546 |
< |
#endif |
| 547 |
< |
f = &hdfragl[fd]; |
| 541 |
> |
if (bi->nrd <= 0) |
| 542 |
> |
return(0); |
| 543 |
> |
DCHECK(hp->fd < 0 | hp->fd >= nhdfragls || !hdfragl[hp->fd].nlinks, |
| 544 |
> |
CONSISTENCY, "bad file descriptor in hdfreefrag"); |
| 545 |
> |
f = &hdfragl[hp->fd]; |
| 546 |
> |
if (!f->writable) |
| 547 |
> |
return(0); |
| 548 |
|
if (f->nfrags % FRAGBLK == 0) { /* delete empty remnants */ |
| 549 |
|
for (j = k = 0; k < f->nfrags; j++, k++) { |
| 550 |
|
while (f->fi[k].nrd == 0) |
| 557 |
|
f->nfrags = j; |
| 558 |
|
} |
| 559 |
|
j = f->nfrags++; /* allocate a slot in free list */ |
| 560 |
< |
#if MAXFRAG |
| 561 |
< |
if (j >= MAXFRAG-1) |
| 562 |
< |
f->nfrags--; |
| 560 |
> |
#if MAXFRAGB |
| 561 |
> |
if (j >= MAXFRAGB*FRAGBLK) { |
| 562 |
> |
f->nfrags = j--; /* stop list growth */ |
| 563 |
> |
if (bi->nrd <= f->fi[j].nrd) |
| 564 |
> |
return(0); /* new one no better than discard */ |
| 565 |
> |
} |
| 566 |
|
#endif |
| 567 |
< |
if (j % FRAGBLK == 0) { /* more free list space */ |
| 567 |
> |
if (j % FRAGBLK == 0) { /* more (or less) free list space */ |
| 568 |
|
register BEAMI *newp; |
| 569 |
|
if (f->fi == NULL) |
| 570 |
|
newp = (BEAMI *)malloc((j+FRAGBLK)*sizeof(BEAMI)); |
| 571 |
|
else |
| 572 |
< |
newp = (BEAMI *)realloc((char *)f->fi, |
| 572 |
> |
newp = (BEAMI *)realloc((void *)f->fi, |
| 573 |
|
(j+FRAGBLK)*sizeof(BEAMI)); |
| 574 |
|
if (newp == NULL) { |
| 575 |
|
f->nfrags--; /* graceful failure */ |
| 576 |
< |
return; |
| 576 |
> |
return(0); |
| 577 |
|
} |
| 578 |
|
f->fi = newp; |
| 579 |
|
} |
| 600 |
|
} |
| 601 |
|
break; |
| 602 |
|
} |
| 603 |
+ |
biglob(hp)->nrd -= bi->nrd; /* tell fragment it's free */ |
| 604 |
+ |
bi->nrd = 0; |
| 605 |
+ |
bi->fo = 0; |
| 606 |
+ |
hdmarkdirty(hp, i); /* assume we'll reallocate */ |
| 607 |
+ |
return(1); |
| 608 |
|
} |
| 609 |
|
|
| 610 |
|
|
| 611 |
< |
long |
| 611 |
> |
int |
| 612 |
> |
hdfragOK(fd, listlen, listsiz) /* get fragment list status for file */ |
| 613 |
> |
int fd; |
| 614 |
> |
int *listlen; |
| 615 |
> |
register int4 *listsiz; |
| 616 |
> |
{ |
| 617 |
> |
register struct fraglist *f; |
| 618 |
> |
register int i; |
| 619 |
> |
|
| 620 |
> |
if (fd < 0 | fd >= nhdfragls || !(f = &hdfragl[fd])->nlinks) |
| 621 |
> |
return(0); /* listless */ |
| 622 |
> |
if (listlen != NULL) |
| 623 |
> |
*listlen = f->nfrags; |
| 624 |
> |
if (listsiz != NULL) |
| 625 |
> |
for (i = f->nfrags, *listsiz = 0; i--; ) |
| 626 |
> |
*listsiz += f->fi[i].nrd; |
| 627 |
> |
#if MAXFRAGB |
| 628 |
> |
return(f->nfrags < MAXFRAGB*FRAGBLK); |
| 629 |
> |
#else |
| 630 |
> |
return(1); /* list never fills up */ |
| 631 |
> |
#endif |
| 632 |
> |
} |
| 633 |
> |
|
| 634 |
> |
|
| 635 |
> |
off_t |
| 636 |
|
hdallocfrag(fd, nrays) /* allocate a file fragment */ |
| 637 |
|
int fd; |
| 638 |
|
unsigned int4 nrays; |
| 639 |
|
{ |
| 640 |
|
register struct fraglist *f; |
| 641 |
< |
register int j, k; |
| 642 |
< |
long nfo; |
| 641 |
> |
register int j; |
| 642 |
> |
off_t nfo; |
| 643 |
|
|
| 644 |
|
if (nrays == 0) |
| 645 |
|
return(-1L); |
| 646 |
< |
#ifdef DEBUG |
| 647 |
< |
if (fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks) |
| 560 |
< |
error(CONSISTENCY, "bad file descriptor in hdallocfrag"); |
| 561 |
< |
#endif |
| 646 |
> |
DCHECK(fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks, |
| 647 |
> |
CONSISTENCY, "bad file descriptor in hdallocfrag"); |
| 648 |
|
f = &hdfragl[fd]; |
| 649 |
< |
k = -1; /* find closest-sized fragment */ |
| 650 |
< |
for (j = f->nfrags; j-- > 0; ) |
| 651 |
< |
if (f->fi[j].nrd >= nrays && |
| 652 |
< |
(k < 0 || f->fi[j].nrd < f->fi[k].nrd)) |
| 567 |
< |
if (f->fi[k=j].nrd == nrays) |
| 568 |
< |
break; |
| 569 |
< |
if (k < 0) { /* no fragment -- extend file */ |
| 649 |
> |
for (j = f->nfrags; j-- > 0; ) /* first fit algorithm */ |
| 650 |
> |
if (f->fi[j].nrd >= nrays) |
| 651 |
> |
break; |
| 652 |
> |
if (j < 0) { /* no fragment -- extend file */ |
| 653 |
|
nfo = f->flen; |
| 654 |
|
f->flen += nrays*sizeof(RAYVAL); |
| 655 |
|
} else { /* else use fragment */ |
| 656 |
< |
nfo = f->fi[k].fo; |
| 657 |
< |
f->fi[k].fo += nrays*sizeof(RAYVAL); |
| 658 |
< |
f->fi[k].nrd -= nrays; |
| 656 |
> |
nfo = f->fi[j].fo; |
| 657 |
> |
f->fi[j].fo += nrays*sizeof(RAYVAL); |
| 658 |
> |
f->fi[j].nrd -= nrays; |
| 659 |
|
} |
| 660 |
|
return(nfo); |
| 661 |
|
} |
| 666 |
|
register HOLO *hp; |
| 667 |
|
register int i; |
| 668 |
|
{ |
| 669 |
+ |
int fragfreed; |
| 670 |
|
unsigned int4 nrays; |
| 671 |
|
unsigned int n; |
| 672 |
< |
long nfo; |
| 672 |
> |
off_t nfo; |
| 673 |
|
/* check file status */ |
| 674 |
< |
if (hdfragl[hp->fd].writerr) |
| 675 |
< |
return(-1); |
| 676 |
< |
#ifdef DEBUG |
| 677 |
< |
if (i < 1 | i > nbeams(hp)) |
| 594 |
< |
error(CONSISTENCY, "bad beam index in hdsyncbeam"); |
| 595 |
< |
#endif |
| 674 |
> |
if (hdfragl[hp->fd].writable <= 0) |
| 675 |
> |
return(hdfragl[hp->fd].writable); |
| 676 |
> |
DCHECK(i < 1 | i > nbeams(hp), |
| 677 |
> |
CONSISTENCY, "bad beam index in hdsyncbeam"); |
| 678 |
|
/* is current fragment OK? */ |
| 679 |
|
if (hp->bl[i] == NULL || (nrays = hp->bl[i]->nrm) == hp->bi[i].nrd) |
| 680 |
|
return(0); |
| 681 |
< |
if (hp->bi[i].nrd) /* relinquish old fragment */ |
| 682 |
< |
hdfreefrag(hp->fd, &hp->bi[i]); |
| 681 |
> |
/* relinquish old fragment? */ |
| 682 |
> |
fragfreed = hdfragflags&FF_WRITE && hp->bi[i].nrd && hdfreefrag(hp,i); |
| 683 |
|
if (nrays) { /* get and write new fragment */ |
| 684 |
|
nfo = hdallocfrag(hp->fd, nrays); |
| 685 |
|
errno = 0; |
| 687 |
|
error(SYSTEM, "cannot seek on holodeck file"); |
| 688 |
|
n = hp->bl[i]->nrm * sizeof(RAYVAL); |
| 689 |
|
if (write(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) { |
| 690 |
< |
hdfragl[hp->fd].writerr++; |
| 690 |
> |
hdfragl[hp->fd].writable = -1; |
| 691 |
|
hdsync(NULL, 0); /* sync directories */ |
| 692 |
|
error(SYSTEM, "write error in hdsyncbeam"); |
| 693 |
|
} |
| 694 |
|
hp->bi[i].fo = nfo; |
| 695 |
|
} else |
| 696 |
< |
hp->bi[i].fo = 0L; |
| 696 |
> |
hp->bi[i].fo = 0; |
| 697 |
|
biglob(hp)->nrd += nrays - hp->bi[i].nrd; |
| 698 |
|
hp->bi[i].nrd = nrays; |
| 699 |
< |
markdirty(hp, i); /* section directory now out of date */ |
| 699 |
> |
if (!fragfreed) |
| 700 |
> |
hdmarkdirty(hp, i); /* need to flag dir. ent. */ |
| 701 |
|
return(1); |
| 702 |
|
} |
| 703 |
|
|
| 715 |
|
nchanged += hdfreebeam(hdlist[i], 0); |
| 716 |
|
return(nchanged); |
| 717 |
|
} |
| 718 |
< |
if (hdfragl[hp->fd].writerr) /* check for file error */ |
| 718 |
> |
if (hdfragl[hp->fd].writable < 0) /* check for file error */ |
| 719 |
|
return(0); |
| 720 |
|
if (i == 0) { /* clear entire holodeck */ |
| 721 |
+ |
if (blglob(hp)->nrm == 0) |
| 722 |
+ |
return(0); /* already clear */ |
| 723 |
|
nchanged = 0; |
| 724 |
|
for (i = nbeams(hp); i > 0; i--) |
| 725 |
|
if (hp->bl[i] != NULL) |
| 726 |
|
nchanged += hdfreebeam(hp, i); |
| 727 |
+ |
DCHECK(blglob(hp)->nrm != 0, |
| 728 |
+ |
CONSISTENCY, "bad beam count in hdfreebeam"); |
| 729 |
|
return(nchanged); |
| 730 |
|
} |
| 731 |
< |
#ifdef DEBUG |
| 732 |
< |
if (i < 1 | i > nbeams(hp)) |
| 646 |
< |
error(CONSISTENCY, "bad beam index to hdfreebeam"); |
| 647 |
< |
#endif |
| 731 |
> |
DCHECK(i < 1 | i > nbeams(hp), |
| 732 |
> |
CONSISTENCY, "bad beam index to hdfreebeam"); |
| 733 |
|
if (hp->bl[i] == NULL) |
| 734 |
|
return(0); |
| 735 |
|
/* check for additions */ |
| 737 |
|
if (nchanged) |
| 738 |
|
hdsyncbeam(hp, i); /* write new fragment */ |
| 739 |
|
blglob(hp)->nrm -= hp->bl[i]->nrm; |
| 740 |
< |
free((char *)hp->bl[i]); /* free memory */ |
| 740 |
> |
free((void *)hp->bl[i]); /* free memory */ |
| 741 |
|
hp->bl[i] = NULL; |
| 742 |
|
return(nchanged); |
| 743 |
|
} |
| 748 |
|
register HOLO *hp; |
| 749 |
|
register int i; |
| 750 |
|
{ |
| 666 |
– |
static BEAM emptybeam; |
| 751 |
|
int nchanged; |
| 752 |
|
|
| 753 |
|
if (hp == NULL) { /* clobber all holodecks */ |
| 757 |
|
return(nchanged); |
| 758 |
|
} |
| 759 |
|
if (i == 0) { /* clobber entire holodeck */ |
| 760 |
+ |
if (biglob(hp)->nrd == 0 & blglob(hp)->nrm == 0) |
| 761 |
+ |
return(0); /* already empty */ |
| 762 |
|
nchanged = 0; |
| 763 |
+ |
nchanged = 0; |
| 764 |
|
for (i = nbeams(hp); i > 0; i--) |
| 765 |
|
if (hp->bi[i].nrd > 0 || hp->bl[i] != NULL) |
| 766 |
|
nchanged += hdkillbeam(hp, i); |
| 767 |
< |
#ifdef DEBUG |
| 768 |
< |
if (biglob(hp)->nrd != 0 | blglob(hp)->nrm != 0) |
| 682 |
< |
error(CONSISTENCY, "bad beam count in hdkillbeam"); |
| 683 |
< |
#endif |
| 767 |
> |
DCHECK(biglob(hp)->nrd != 0 | blglob(hp)->nrm != 0, |
| 768 |
> |
CONSISTENCY, "bad beam count in hdkillbeam"); |
| 769 |
|
return(nchanged); |
| 770 |
|
} |
| 771 |
< |
#ifdef DEBUG |
| 772 |
< |
if (i < 1 | i > nbeams(hp)) |
| 773 |
< |
error(CONSISTENCY, "bad beam index to hdkillbeam"); |
| 774 |
< |
#endif |
| 771 |
> |
DCHECK(i < 1 | i > nbeams(hp), CONSISTENCY, |
| 772 |
> |
"bad beam index to hdkillbeam"); |
| 773 |
> |
DCHECK(!hdfragl[hp->fd].writable, CONSISTENCY, |
| 774 |
> |
"hdkillbeam called on read-only holodeck"); |
| 775 |
|
if (hp->bl[i] != NULL) { /* free memory */ |
| 776 |
|
blglob(hp)->nrm -= nchanged = hp->bl[i]->nrm; |
| 777 |
< |
free((char *)hp->bl[i]); |
| 777 |
> |
free((void *)hp->bl[i]); |
| 778 |
> |
hp->bl[i] = NULL; |
| 779 |
|
} else |
| 780 |
|
nchanged = hp->bi[i].nrd; |
| 781 |
< |
if (hp->bi[i].nrd) { /* free file fragment */ |
| 782 |
< |
hp->bl[i] = &emptybeam; |
| 783 |
< |
hdsyncbeam(hp, i); |
| 781 |
> |
if (hp->bi[i].nrd && !(hdfragflags&FF_KILL && hdfreefrag(hp,i))) { |
| 782 |
> |
biglob(hp)->nrd -= hp->bi[i].nrd; /* free failed */ |
| 783 |
> |
hp->bi[i].nrd = 0; |
| 784 |
> |
hp->bi[i].fo = 0; |
| 785 |
> |
hdmarkdirty(hp, i); |
| 786 |
|
} |
| 699 |
– |
hp->bl[i] = NULL; |
| 787 |
|
return(nchanged); |
| 788 |
|
} |
| 789 |
|
|
| 872 |
|
if (hp == NULL) { /* NULL means clean up everything */ |
| 873 |
|
while (hdlist[0] != NULL) |
| 874 |
|
hddone(hdlist[0]); |
| 875 |
< |
free((char *)hdfragl); |
| 875 |
> |
free((void *)hdfragl); |
| 876 |
|
hdfragl = NULL; nhdfragls = 0; |
| 877 |
|
return; |
| 878 |
|
} |
| 879 |
|
/* flush all data and free memory */ |
| 880 |
< |
hdfreebeam(hp, 0); |
| 794 |
< |
hdsync(hp, 0); |
| 880 |
> |
hdflush(hp); |
| 881 |
|
/* release fragment resources */ |
| 882 |
|
hdrelease(hp->fd); |
| 883 |
|
/* remove hp from active list */ |
| 887 |
|
i++; |
| 888 |
|
break; |
| 889 |
|
} |
| 890 |
< |
free((char *)hp->bl); /* free beam list */ |
| 891 |
< |
free((char *)hp); /* free holodeck struct */ |
| 890 |
> |
free((void *)hp->bl); /* free beam list */ |
| 891 |
> |
free((void *)hp); /* free holodeck struct */ |
| 892 |
|
} |