| 1 |
– |
/* Copyright (c) 1999 Silicon Graphics, Inc. */ |
| 2 |
– |
|
| 1 |
|
#ifndef lint |
| 2 |
< |
static char SCCSid[] = "$SunId$ SGI"; |
| 2 |
> |
static const char RCSid[] = "$Id$"; |
| 3 |
|
#endif |
| 6 |
– |
|
| 4 |
|
/* |
| 5 |
|
* Routines for managing holodeck files |
| 6 |
|
* |
| 7 |
|
* 9/30/97 GWLarson |
| 8 |
|
*/ |
| 9 |
|
|
| 10 |
+ |
#include "copyright.h" |
| 11 |
+ |
|
| 12 |
+ |
#include <string.h> |
| 13 |
+ |
|
| 14 |
+ |
#include "platform.h" |
| 15 |
+ |
#include "rtprocess.h" |
| 16 |
+ |
|
| 17 |
|
#include "holo.h" |
| 18 |
|
|
| 19 |
|
#ifndef CACHESIZE |
| 20 |
< |
#ifdef BIGMEM |
| 21 |
< |
#define CACHESIZE 32 /* default cache size (Mbytes, 0==inf) */ |
| 20 |
> |
#ifdef SMLMEM |
| 21 |
> |
#define CACHESIZE 10 |
| 22 |
|
#else |
| 23 |
< |
#define CACHESIZE 12 |
| 23 |
> |
#define CACHESIZE 100 /* default cache size (Mbytes, 0==inf) */ |
| 24 |
|
#endif |
| 25 |
|
#endif |
| 26 |
|
#ifndef FREEBEAMS |
| 30 |
|
#define PCTFREE 15 /* maximum fraction to free (%) */ |
| 31 |
|
#endif |
| 32 |
|
#ifndef MAXFRAGB |
| 33 |
< |
#define MAXFRAGB 16 /* fragment blocks/file to track (0==inf) */ |
| 33 |
> |
#define MAXFRAGB 64 /* fragment blocks/file to track (0==inf) */ |
| 34 |
|
#endif |
| 35 |
|
#ifndef FF_DEFAULT |
| 36 |
|
/* when to free a beam fragment */ |
| 37 |
< |
#define FF_DEFAULT (FF_ALLOC|FF_WRITE|FF_KILL) |
| 37 |
> |
#define FF_DEFAULT (FF_WRITE|FF_KILL) |
| 38 |
|
#endif |
| 39 |
|
#ifndef MINDIRSEL |
| 40 |
|
/* minimum directory seek length */ |
| 42 |
|
#endif |
| 43 |
|
|
| 44 |
|
#ifndef BSD |
| 45 |
+ |
#ifdef write /* platform.h renames those for Windows */ |
| 46 |
+ |
#undef write |
| 47 |
+ |
#endif |
| 48 |
|
#define write writebuf /* safe i/o routines */ |
| 49 |
+ |
#ifdef read |
| 50 |
+ |
#undef read |
| 51 |
+ |
#endif |
| 52 |
|
#define read readbuf |
| 53 |
|
#endif |
| 54 |
|
|
| 62 |
|
|
| 63 |
|
static struct fraglist { |
| 64 |
|
short nlinks; /* number of holodeck sections using us */ |
| 65 |
< |
short writerr; /* write error encountered */ |
| 65 |
> |
short writable; /* 0 read-only, <0 write error encountered */ |
| 66 |
|
int nfrags; /* number of known fragments */ |
| 67 |
|
BEAMI *fi; /* fragments, descending file position */ |
| 68 |
< |
long flen; /* last known file length */ |
| 68 |
> |
off_t flen; /* last known file length */ |
| 69 |
|
} *hdfragl; /* fragment lists, indexed by file descriptor */ |
| 70 |
|
|
| 71 |
|
static int nhdfragls; /* size of hdfragl array */ |
| 72 |
|
|
| 73 |
+ |
static HOLO *hdalloc(HDGRID *hproto); |
| 74 |
+ |
static char *hdrealloc(char *ptr, unsigned siz, char *rout); |
| 75 |
+ |
static void hdattach(int fd, int wr); |
| 76 |
+ |
static void hdrelease(int fd); |
| 77 |
+ |
static void hdmarkdirty(HOLO *hp, int i); |
| 78 |
+ |
static unsigned int hdmemuse(int all); |
| 79 |
+ |
static int hdfilord(const void *hb1, const void *hb2); |
| 80 |
+ |
static off_t hdallocfrag(int fd, uint32 nrays); |
| 81 |
+ |
static int hdsyncbeam(HOLO *hp, int i); |
| 82 |
+ |
static int hdlrulist(HDBEAMI *hb, int nents, int n, HOLO *hp); |
| 83 |
+ |
static int hdfreecache(int pct, HOLO *honly); |
| 84 |
|
|
| 85 |
+ |
|
| 86 |
+ |
|
| 87 |
+ |
HOLO * |
| 88 |
+ |
hdalloc( /* allocate and set holodeck section based on grid */ |
| 89 |
+ |
HDGRID *hproto |
| 90 |
+ |
) |
| 91 |
+ |
{ |
| 92 |
+ |
HOLO hdhead; |
| 93 |
+ |
HOLO *hp; |
| 94 |
+ |
int n; |
| 95 |
+ |
/* copy grid to temporary header */ |
| 96 |
+ |
memcpy((void *)&hdhead, (void *)hproto, sizeof(HDGRID)); |
| 97 |
+ |
/* compute grid vectors and sizes */ |
| 98 |
+ |
hdcompgrid(&hdhead); |
| 99 |
+ |
/* allocate header with directory */ |
| 100 |
+ |
n = sizeof(HOLO)+nbeams(&hdhead)*sizeof(BEAMI); |
| 101 |
+ |
if ((hp = (HOLO *)malloc(n)) == NULL) |
| 102 |
+ |
return(NULL); |
| 103 |
+ |
/* copy header information */ |
| 104 |
+ |
*hp = hdhead; |
| 105 |
+ |
/* allocate and clear beam list */ |
| 106 |
+ |
hp->bl = (BEAM **)malloc((nbeams(hp)+1)*sizeof(BEAM *)+sizeof(BEAM)); |
| 107 |
+ |
if (hp->bl == NULL) { |
| 108 |
+ |
free((void *)hp); |
| 109 |
+ |
return(NULL); |
| 110 |
+ |
} |
| 111 |
+ |
memset((void *)hp->bl, '\0', (nbeams(hp)+1)*sizeof(BEAM *)+sizeof(BEAM)); |
| 112 |
+ |
hp->bl[0] = (BEAM *)(hp->bl+nbeams(hp)+1); /* set blglob(hp) */ |
| 113 |
+ |
hp->fd = -1; |
| 114 |
+ |
hp->dirty = 0; |
| 115 |
+ |
hp->priv = NULL; |
| 116 |
+ |
/* clear beam directory */ |
| 117 |
+ |
memset((void *)hp->bi, '\0', (nbeams(hp)+1)*sizeof(BEAMI)); |
| 118 |
+ |
return(hp); /* all is well */ |
| 119 |
+ |
} |
| 120 |
+ |
|
| 121 |
+ |
|
| 122 |
|
char * |
| 123 |
< |
hdrealloc(ptr, siz, rout) /* (re)allocate memory, retry then error */ |
| 124 |
< |
char *ptr; |
| 125 |
< |
unsigned siz; |
| 126 |
< |
char *rout; |
| 123 |
> |
hdrealloc( /* (re)allocate memory, retry then error */ |
| 124 |
> |
char *ptr, |
| 125 |
> |
unsigned siz, |
| 126 |
> |
char *rout |
| 127 |
> |
) |
| 128 |
|
{ |
| 129 |
< |
register char *newp; |
| 129 |
> |
char *newp; |
| 130 |
|
/* call malloc/realloc */ |
| 131 |
|
if (ptr == NULL) newp = (char *)malloc(siz); |
| 132 |
< |
else newp = (char *)realloc(ptr, siz); |
| 132 |
> |
else newp = (char *)realloc((void *)ptr, siz); |
| 133 |
|
/* check success */ |
| 134 |
|
if (newp == NULL && rout != NULL) { |
| 135 |
|
hdfreecache(25, NULL); /* free some memory */ |
| 144 |
|
} |
| 145 |
|
|
| 146 |
|
|
| 147 |
< |
hdattach(fd) /* start tracking file fragments for some section */ |
| 148 |
< |
register int fd; |
| 147 |
> |
void |
| 148 |
> |
hdattach( /* start tracking file fragments for some section */ |
| 149 |
> |
int fd, |
| 150 |
> |
int wr |
| 151 |
> |
) |
| 152 |
|
{ |
| 153 |
|
if (fd >= nhdfragls) { |
| 154 |
|
hdfragl = (struct fraglist *)hdrealloc((char *)hdfragl, |
| 155 |
|
(fd+1)*sizeof(struct fraglist), "hdattach"); |
| 156 |
< |
bzero((char *)(hdfragl+nhdfragls), |
| 157 |
< |
(fd+1-nhdfragls)*sizeof(struct fraglist)); |
| 156 |
> |
memset((void *)(hdfragl+nhdfragls), |
| 157 |
> |
'\0', (fd+1-nhdfragls)*sizeof(struct fraglist)); |
| 158 |
|
nhdfragls = fd+1; |
| 159 |
|
} |
| 160 |
|
hdfragl[fd].nlinks++; |
| 161 |
< |
hdfragl[fd].flen = lseek(fd, 0L, 2); /* get file length */ |
| 161 |
> |
hdfragl[fd].writable = wr; /* set writable flag */ |
| 162 |
> |
/* get file length */ |
| 163 |
> |
hdfragl[fd].flen = lseek(fd, (off_t)0, SEEK_END); |
| 164 |
|
} |
| 165 |
|
|
| 166 |
|
|
| 167 |
|
/* Do we need a routine to locate file fragments given known occupants? */ |
| 168 |
|
|
| 169 |
|
|
| 170 |
< |
hdrelease(fd) /* stop tracking file fragments for some section */ |
| 171 |
< |
register int fd; |
| 170 |
> |
void |
| 171 |
> |
hdrelease( /* stop tracking file fragments for some section */ |
| 172 |
> |
int fd |
| 173 |
> |
) |
| 174 |
|
{ |
| 175 |
< |
if (fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks) |
| 175 |
> |
if ((fd < 0) | (fd >= nhdfragls) || !hdfragl[fd].nlinks) |
| 176 |
|
return; |
| 177 |
|
if (!--hdfragl[fd].nlinks && hdfragl[fd].nfrags) { |
| 178 |
< |
free((char *)hdfragl[fd].fi); |
| 178 |
> |
free((void *)hdfragl[fd].fi); |
| 179 |
|
hdfragl[fd].fi = NULL; |
| 180 |
|
hdfragl[fd].nfrags = 0; |
| 181 |
|
} |
| 183 |
|
|
| 184 |
|
|
| 185 |
|
HOLO * |
| 186 |
< |
hdinit(fd, hproto) /* initialize a holodeck section in a file */ |
| 187 |
< |
int fd; /* corresponding file descriptor */ |
| 188 |
< |
HDGRID *hproto; /* holodeck section grid */ |
| 186 |
> |
hdinit( /* initialize a holodeck section in a file */ |
| 187 |
> |
int fd, /* corresponding file descriptor */ |
| 188 |
> |
HDGRID *hproto /* holodeck section grid */ |
| 189 |
> |
) |
| 190 |
|
{ |
| 191 |
< |
long rtrunc; |
| 192 |
< |
long fpos; |
| 193 |
< |
register HOLO *hp; |
| 194 |
< |
register int n; |
| 191 |
> |
off_t rtrunc; |
| 192 |
> |
off_t fpos; |
| 193 |
> |
int writable; |
| 194 |
> |
HOLO *hp; |
| 195 |
> |
int n; |
| 196 |
|
/* prepare for system errors */ |
| 197 |
|
errno = 0; |
| 198 |
< |
if ((fpos = lseek(fd, 0L, 1)) < 0) |
| 198 |
> |
if ((fpos = lseek(fd, (off_t)0, SEEK_CUR)) < 0) |
| 199 |
|
error(SYSTEM, "cannot determine holodeck file position"); |
| 200 |
|
if (hproto == NULL) { /* assume we're loading it */ |
| 201 |
|
HDGRID hpr; |
| 216 |
|
error(WARNING, "dirty holodeck section"); |
| 217 |
|
break; |
| 218 |
|
} |
| 219 |
< |
} else { /* assume we're creating it */ |
| 219 |
> |
/* check writability */ |
| 220 |
> |
if (fd < nhdfragls && hdfragl[fd].nlinks) |
| 221 |
> |
writable = hdfragl[fd].writable; |
| 222 |
> |
else |
| 223 |
> |
writable = lseek(fd, fpos, SEEK_SET) == fpos && |
| 224 |
> |
write(fd, (char *)hp, sizeof(HDGRID)) == |
| 225 |
> |
sizeof(HDGRID); |
| 226 |
> |
} else { /* else assume we're creating it */ |
| 227 |
|
if ((hp = hdalloc(hproto)) == NULL) |
| 228 |
|
goto memerr; |
| 229 |
|
/* write header and skeleton */ |
| 232 |
|
sizeof(HDGRID) || |
| 233 |
|
write(fd, (char *)(hp->bi+1), n) != n) |
| 234 |
|
error(SYSTEM, "cannot write header to holodeck file"); |
| 235 |
+ |
writable = 1; |
| 236 |
|
} |
| 237 |
|
hp->fd = fd; |
| 238 |
|
hp->dirty = 0; |
| 239 |
|
biglob(hp)->fo = fpos + sizeof(HDGRID); |
| 240 |
|
/* start tracking fragments */ |
| 241 |
< |
hdattach(fd); |
| 241 |
> |
hdattach(fd, writable); |
| 242 |
|
/* check rays on disk */ |
| 243 |
|
fpos = hdfilen(fd); |
| 244 |
|
biglob(hp)->nrd = rtrunc = 0; |
| 245 |
|
for (n = hproto == NULL ? nbeams(hp) : 0; n > 0; n--) |
| 246 |
< |
if (hp->bi[n].nrd) |
| 246 |
> |
if (hp->bi[n].nrd) { |
| 247 |
|
if (hp->bi[n].fo+hp->bi[n].nrd*sizeof(RAYVAL) > fpos) { |
| 248 |
|
rtrunc += hp->bi[n].nrd; |
| 249 |
|
hp->bi[n].nrd = 0; |
| 250 |
|
} else |
| 251 |
|
biglob(hp)->nrd += hp->bi[n].nrd; |
| 252 |
+ |
} |
| 253 |
|
if (rtrunc) { |
| 254 |
|
sprintf(errmsg, "truncated section, %ld rays lost (%.1f%%)", |
| 255 |
< |
rtrunc, 100.*rtrunc/(rtrunc+biglob(hp)->nrd)); |
| 255 |
> |
(long)rtrunc, |
| 256 |
> |
100.*rtrunc/(rtrunc+biglob(hp)->nrd)); |
| 257 |
|
error(WARNING, errmsg); |
| 258 |
|
} |
| 259 |
|
/* add to holodeck list */ |
| 266 |
|
return(hp); |
| 267 |
|
memerr: |
| 268 |
|
error(SYSTEM, "cannot allocate holodeck grid"); |
| 269 |
+ |
return NULL; /* pro forma return */ |
| 270 |
|
} |
| 271 |
|
|
| 272 |
|
|
| 273 |
< |
hdmarkdirty(hp, i) /* mark holodeck directory position dirty */ |
| 274 |
< |
register HOLO *hp; |
| 275 |
< |
int i; |
| 273 |
> |
void |
| 274 |
> |
hdmarkdirty( /* mark holodeck directory position dirty */ |
| 275 |
> |
HOLO *hp, |
| 276 |
> |
int i |
| 277 |
> |
) |
| 278 |
|
{ |
| 279 |
|
static BEAMI smudge = {0, -1}; |
| 280 |
|
int mindist, minpos; |
| 281 |
< |
register int j; |
| 281 |
> |
int j; |
| 282 |
|
|
| 283 |
|
if (!hp->dirty++) { /* write smudge first time */ |
| 284 |
< |
if (lseek(hp->fd, biglob(hp)->fo+(i-1)*sizeof(BEAMI), 0) < 0 |
| 285 |
< |
|| write(hp->fd, (char *)&smudge, |
| 284 |
> |
if (lseek(hp->fd, biglob(hp)->fo+(i-1)*sizeof(BEAMI), |
| 285 |
> |
SEEK_SET) < 0 || |
| 286 |
> |
write(hp->fd, (char *)&smudge, |
| 287 |
|
sizeof(BEAMI)) != sizeof(BEAMI)) |
| 288 |
|
error(SYSTEM, "seek/write error in hdmarkdirty"); |
| 289 |
|
hp->dirseg[0].s = i; |
| 297 |
|
hp->dirseg[j].n = 1; |
| 298 |
|
break; |
| 299 |
|
} |
| 300 |
< |
copystruct(hp->dirseg+j, hp->dirseg+(j-1)); |
| 300 |
> |
*(hp->dirseg+j) = *(hp->dirseg+(j-1)); |
| 301 |
|
} |
| 302 |
|
do { /* check neighbors */ |
| 303 |
|
mindist = nbeams(hp); /* find closest */ |
| 319 |
|
hp->dirseg[minpos].n - hp->dirseg[j].s; |
| 320 |
|
hp->dirty--; |
| 321 |
|
while (++j < hp->dirty) /* close the gap */ |
| 322 |
< |
copystruct(hp->dirseg+j, hp->dirseg+(j+1)); |
| 322 |
> |
*(hp->dirseg+j) = *(hp->dirseg+(j+1)); |
| 323 |
|
} while (mindist <= MINDIRSEL); |
| 324 |
|
} |
| 325 |
|
|
| 326 |
|
|
| 327 |
|
int |
| 328 |
< |
hdsync(hp, all) /* update beams and directory on disk */ |
| 329 |
< |
register HOLO *hp; |
| 330 |
< |
int all; |
| 328 |
> |
hdsync( /* update beams and directory on disk */ |
| 329 |
> |
HOLO *hp, |
| 330 |
> |
int all |
| 331 |
> |
) |
| 332 |
|
{ |
| 333 |
< |
register int j, n; |
| 333 |
> |
int j, n; |
| 334 |
|
|
| 335 |
|
if (hp == NULL) { /* do all holodecks */ |
| 336 |
|
n = 0; |
| 347 |
|
errno = 0; /* write dirty segments */ |
| 348 |
|
for (j = 0; j < hp->dirty; j++) { |
| 349 |
|
if (lseek(hp->fd, biglob(hp)->fo + |
| 350 |
< |
(hp->dirseg[j].s-1)*sizeof(BEAMI), 0) < 0) |
| 350 |
> |
(hp->dirseg[j].s-1)*sizeof(BEAMI), SEEK_SET) < 0) |
| 351 |
|
error(SYSTEM, "cannot seek on holodeck file"); |
| 352 |
|
n = hp->dirseg[j].n * sizeof(BEAMI); |
| 353 |
|
if (write(hp->fd, (char *)(hp->bi+hp->dirseg[j].s), n) != n) |
| 358 |
|
} |
| 359 |
|
|
| 360 |
|
|
| 361 |
< |
unsigned |
| 362 |
< |
hdmemuse(all) /* return memory usage (in bytes) */ |
| 363 |
< |
int all; /* include overhead (painful) */ |
| 361 |
> |
unsigned int |
| 362 |
> |
hdmemuse( /* return memory usage (in bytes) */ |
| 363 |
> |
int all /* include overhead (painful) */ |
| 364 |
> |
) |
| 365 |
|
{ |
| 366 |
|
long total = 0; |
| 367 |
< |
register int i, j; |
| 367 |
> |
int i, j; |
| 368 |
|
|
| 369 |
|
for (j = 0; hdlist[j] != NULL; j++) { |
| 370 |
|
total += blglob(hdlist[j])->nrm * sizeof(RAYVAL); |
| 388 |
|
} |
| 389 |
|
|
| 390 |
|
|
| 391 |
< |
long |
| 392 |
< |
hdfilen(fd) /* return file length for fd */ |
| 393 |
< |
int fd; |
| 391 |
> |
off_t |
| 392 |
> |
hdfilen( /* return file length for fd */ |
| 393 |
> |
int fd |
| 394 |
> |
) |
| 395 |
|
{ |
| 396 |
< |
long fpos, flen; |
| 396 |
> |
off_t fpos, flen; |
| 397 |
|
|
| 398 |
|
if (fd < 0) |
| 399 |
|
return(-1); |
| 400 |
|
if (fd >= nhdfragls || !hdfragl[fd].nlinks) { |
| 401 |
< |
if ((fpos = lseek(fd, 0L, 1)) < 0) |
| 401 |
> |
if ((fpos = lseek(fd, (off_t)0, SEEK_CUR)) < 0) |
| 402 |
|
return(-1); |
| 403 |
< |
flen = lseek(fd, 0L, 2); |
| 404 |
< |
lseek(fd, fpos, 0); |
| 403 |
> |
flen = lseek(fd, (off_t)0, SEEK_END); |
| 404 |
> |
lseek(fd, fpos, SEEK_SET); |
| 405 |
|
return(flen); |
| 406 |
|
} |
| 407 |
|
return(hdfragl[fd].flen); |
| 408 |
|
} |
| 409 |
|
|
| 410 |
|
|
| 411 |
< |
long |
| 412 |
< |
hdfiluse(fd, all) /* compute file usage (in bytes) */ |
| 413 |
< |
int fd; /* open file descriptor to check */ |
| 414 |
< |
int all; /* include overhead and unflushed data */ |
| 411 |
> |
off_t |
| 412 |
> |
hdfiluse( /* compute file usage (in bytes) */ |
| 413 |
> |
int fd /* open file descriptor to check */ |
| 414 |
> |
) |
| 415 |
|
{ |
| 416 |
< |
long total = 0; |
| 417 |
< |
register int i, j; |
| 416 |
> |
off_t total = 0; |
| 417 |
> |
int j; |
| 418 |
|
|
| 419 |
|
for (j = 0; hdlist[j] != NULL; j++) { |
| 420 |
|
if (hdlist[j]->fd != fd) |
| 421 |
|
continue; |
| 422 |
|
total += biglob(hdlist[j])->nrd * sizeof(RAYVAL); |
| 423 |
< |
if (all) { |
| 424 |
< |
for (i = nbeams(hdlist[j]); i > 0; i--) |
| 425 |
< |
if (hdlist[j]->bl[i] != NULL) |
| 426 |
< |
total += sizeof(RAYVAL) * |
| 423 |
> |
total += nbeams(hdlist[j])*sizeof(BEAMI) + sizeof(HDGRID); |
| 424 |
> |
#if 0 |
| 425 |
> |
for (i = nbeams(hdlist[j]); i > 0; i--) |
| 426 |
> |
if (hdlist[j]->bl[i] != NULL) |
| 427 |
> |
total += sizeof(RAYVAL) * |
| 428 |
|
(hdlist[j]->bl[i]->nrm - |
| 429 |
|
hdlist[j]->bi[i].nrd); |
| 430 |
< |
total += sizeof(HDGRID) + |
| 345 |
< |
nbeams(hdlist[j])*sizeof(BEAMI); |
| 346 |
< |
} |
| 430 |
> |
#endif |
| 431 |
|
} |
| 432 |
< |
return(total); /* does not include fragments */ |
| 432 |
> |
return(total); /* doesn't include fragments, unflushed rays */ |
| 433 |
|
} |
| 434 |
|
|
| 435 |
|
|
| 436 |
|
RAYVAL * |
| 437 |
< |
hdnewrays(hp, i, nr) /* allocate space for add'l rays and return pointer */ |
| 438 |
< |
register HOLO *hp; |
| 439 |
< |
register int i; |
| 440 |
< |
int nr; /* number of new rays desired */ |
| 437 |
> |
hdnewrays( /* allocate space for add'l rays and return pointer */ |
| 438 |
> |
HOLO *hp, |
| 439 |
> |
int i, |
| 440 |
> |
int nr /* number of new rays desired */ |
| 441 |
> |
) |
| 442 |
|
{ |
| 443 |
|
RAYVAL *p; |
| 444 |
|
int n; |
| 445 |
|
|
| 446 |
|
if (nr <= 0) return(NULL); |
| 447 |
< |
CHECK(i < 1 | i > nbeams(hp), |
| 447 |
> |
CHECK((i < 1) | (i > nbeams(hp)), |
| 448 |
|
CONSISTENCY, "bad beam index given to hdnewrays"); |
| 449 |
|
if (hp->bl[i] != NULL) |
| 450 |
|
hp->bl[i]->tick = hdclock; /* preempt swap */ |
| 456 |
|
blglob(hp)->nrm += n; |
| 457 |
|
if ((n = hp->bl[i]->nrm = hp->bi[i].nrd)) { |
| 458 |
|
errno = 0; |
| 459 |
< |
if (lseek(hp->fd, hp->bi[i].fo, 0) < 0) |
| 459 |
> |
if (lseek(hp->fd, hp->bi[i].fo, SEEK_SET) < 0) |
| 460 |
|
error(SYSTEM, "seek error on holodeck file"); |
| 461 |
|
n *= sizeof(RAYVAL); |
| 462 |
|
if (read(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) |
| 472 |
|
hdfreefrag(hp, i); /* relinquish old fragment */ |
| 473 |
|
p = hdbray(hp->bl[i]) + hp->bl[i]->nrm; |
| 474 |
|
hp->bl[i]->nrm += nr; /* update in-core structure */ |
| 475 |
< |
bzero((char *)p, nr*sizeof(RAYVAL)); |
| 475 |
> |
memset((void *)p, '\0', nr*sizeof(RAYVAL)); |
| 476 |
|
blglob(hp)->tick = hp->bl[i]->tick = hdclock++; /* update LRU clock */ |
| 477 |
|
return(p); /* point to new rays */ |
| 478 |
|
} |
| 479 |
|
|
| 480 |
|
|
| 481 |
|
BEAM * |
| 482 |
< |
hdgetbeam(hp, i) /* get beam (from file if necessary) */ |
| 483 |
< |
register HOLO *hp; |
| 484 |
< |
register int i; |
| 482 |
> |
hdgetbeam( /* get beam (from file if necessary) */ |
| 483 |
> |
HOLO *hp, |
| 484 |
> |
int i |
| 485 |
> |
) |
| 486 |
|
{ |
| 487 |
< |
register int n; |
| 487 |
> |
int n; |
| 488 |
|
|
| 489 |
< |
CHECK(i < 1 | i > nbeams(hp), |
| 489 |
> |
CHECK((i < 1) | (i > nbeams(hp)), |
| 490 |
|
CONSISTENCY, "bad beam index given to hdgetbeam"); |
| 491 |
|
if (hp->bl[i] == NULL) { /* load from disk */ |
| 492 |
|
if (!(n = hp->bi[i].nrd)) |
| 496 |
|
hp->bl[i] = (BEAM *)hdrealloc(NULL, hdbsiz(n), "hdgetbeam"); |
| 497 |
|
blglob(hp)->nrm += hp->bl[i]->nrm = n; |
| 498 |
|
errno = 0; |
| 499 |
< |
if (lseek(hp->fd, hp->bi[i].fo, 0) < 0) |
| 499 |
> |
if (lseek(hp->fd, hp->bi[i].fo, SEEK_SET) < 0) |
| 500 |
|
error(SYSTEM, "seek error on holodeck file"); |
| 501 |
|
n *= sizeof(RAYVAL); |
| 502 |
|
if (read(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) |
| 510 |
|
|
| 511 |
|
|
| 512 |
|
int |
| 513 |
< |
hdfilord(hb1, hb2) /* order beams for quick loading */ |
| 514 |
< |
register HDBEAMI *hb1, *hb2; |
| 513 |
> |
hdfilord( /* order beams for quick loading */ |
| 514 |
> |
const void *hb1, |
| 515 |
> |
const void *hb2 |
| 516 |
> |
) |
| 517 |
|
{ |
| 518 |
< |
register long c; |
| 518 |
> |
off_t c; |
| 519 |
|
/* residents go first */ |
| 520 |
< |
if (hb2->h->bl[hb2->b] != NULL) |
| 521 |
< |
return(hb1->h->bl[hb1->b] == NULL); |
| 522 |
< |
if (hb1->h->bl[hb1->b] != NULL) |
| 520 |
> |
if (((HDBEAMI*)hb2)->h->bl[((HDBEAMI*)hb2)->b] != NULL) |
| 521 |
> |
return(((HDBEAMI*)hb1)->h->bl[((HDBEAMI*)hb1)->b] == NULL); |
| 522 |
> |
if (((HDBEAMI*)hb1)->h->bl[((HDBEAMI*)hb1)->b] != NULL) |
| 523 |
|
return(-1); |
| 524 |
|
/* otherwise sort by file descriptor */ |
| 525 |
< |
if ((c = hb1->h->fd - hb2->h->fd)) |
| 526 |
< |
return(c); |
| 525 |
> |
if (((HDBEAMI*)hb1)->h->fd != ((HDBEAMI*)hb2)->h->fd) |
| 526 |
> |
return(((HDBEAMI*)hb1)->h->fd - ((HDBEAMI*)hb2)->h->fd); |
| 527 |
|
/* then by position in file */ |
| 528 |
< |
c = hb1->h->bi[hb1->b].fo - hb2->h->bi[hb2->b].fo; |
| 528 |
> |
c = ((HDBEAMI*)hb1)->h->bi[((HDBEAMI*)hb1)->b].fo |
| 529 |
> |
- ((HDBEAMI*)hb2)->h->bi[((HDBEAMI*)hb2)->b].fo; |
| 530 |
|
return(c > 0 ? 1 : c < 0 ? -1 : 0); |
| 531 |
|
} |
| 532 |
|
|
| 533 |
|
|
| 534 |
< |
hdloadbeams(hb, n, bf) /* load a list of beams in optimal order */ |
| 535 |
< |
register HDBEAMI *hb; /* list gets sorted by hdfilord() */ |
| 536 |
< |
int n; /* list length */ |
| 537 |
< |
int (*bf)(); /* callback function (optional) */ |
| 534 |
> |
void |
| 535 |
> |
hdloadbeams( /* load a list of beams in optimal order */ |
| 536 |
> |
HDBEAMI *hb, /* list gets sorted by hdfilord() */ |
| 537 |
> |
int n, /* list length */ |
| 538 |
> |
void (*bf)(BEAM *bp, HDBEAMI *hb) /* callback function (optional) */ |
| 539 |
> |
) |
| 540 |
|
{ |
| 541 |
|
unsigned origcachesize, memuse; |
| 542 |
|
int bytesloaded, needbytes, bytes2free; |
| 543 |
< |
register BEAM *bp; |
| 544 |
< |
register int i; |
| 543 |
> |
BEAM *bp; |
| 544 |
> |
int i; |
| 545 |
|
/* precheck consistency */ |
| 546 |
|
if (n <= 0) return; |
| 547 |
|
for (i = n; i--; ) |
| 548 |
< |
if (hb[i].h==NULL || hb[i].b<1 | hb[i].b>nbeams(hb[i].h)) |
| 548 |
> |
if (hb[i].h==NULL || (hb[i].b<1) | (hb[i].b>nbeams(hb[i].h))) |
| 549 |
|
error(CONSISTENCY, "bad beam in hdloadbeams"); |
| 550 |
|
/* sort list for optimal access */ |
| 551 |
< |
qsort((char *)hb, n, sizeof(HDBEAMI), hdfilord); |
| 551 |
> |
qsort((void *)hb, n, sizeof(HDBEAMI), hdfilord); |
| 552 |
|
bytesloaded = 0; /* run through loaded beams */ |
| 553 |
|
for ( ; n && (bp = hb->h->bl[hb->b]) != NULL; n--, hb++) { |
| 554 |
|
bp->tick = hdclock; /* preempt swap */ |
| 579 |
|
|
| 580 |
|
|
| 581 |
|
int |
| 582 |
< |
hdfreefrag(hp, i) /* free a file fragment */ |
| 583 |
< |
HOLO *hp; |
| 584 |
< |
int i; |
| 582 |
> |
hdfreefrag( /* free a file fragment */ |
| 583 |
> |
HOLO *hp, |
| 584 |
> |
int i |
| 585 |
> |
) |
| 586 |
|
{ |
| 587 |
< |
register BEAMI *bi = &hp->bi[i]; |
| 588 |
< |
register struct fraglist *f; |
| 589 |
< |
register int j, k; |
| 587 |
> |
BEAMI *bi = &hp->bi[i]; |
| 588 |
> |
struct fraglist *f; |
| 589 |
> |
int j, k; |
| 590 |
|
|
| 591 |
|
if (bi->nrd <= 0) |
| 592 |
|
return(0); |
| 593 |
|
DCHECK(hp->fd < 0 | hp->fd >= nhdfragls || !hdfragl[hp->fd].nlinks, |
| 594 |
|
CONSISTENCY, "bad file descriptor in hdfreefrag"); |
| 595 |
|
f = &hdfragl[hp->fd]; |
| 596 |
+ |
if (!f->writable) |
| 597 |
+ |
return(0); |
| 598 |
|
if (f->nfrags % FRAGBLK == 0) { /* delete empty remnants */ |
| 599 |
|
for (j = k = 0; k < f->nfrags; j++, k++) { |
| 600 |
|
while (f->fi[k].nrd == 0) |
| 601 |
|
if (++k >= f->nfrags) |
| 602 |
|
goto endloop; |
| 603 |
|
if (k > j) |
| 604 |
< |
copystruct(f->fi+j, f->fi+k); |
| 604 |
> |
*(f->fi+j) = *(f->fi+k); |
| 605 |
|
} |
| 606 |
|
endloop: |
| 607 |
|
f->nfrags = j; |
| 615 |
|
} |
| 616 |
|
#endif |
| 617 |
|
if (j % FRAGBLK == 0) { /* more (or less) free list space */ |
| 618 |
< |
register BEAMI *newp; |
| 618 |
> |
BEAMI *newp; |
| 619 |
|
if (f->fi == NULL) |
| 620 |
|
newp = (BEAMI *)malloc((j+FRAGBLK)*sizeof(BEAMI)); |
| 621 |
|
else |
| 622 |
< |
newp = (BEAMI *)realloc((char *)f->fi, |
| 622 |
> |
newp = (BEAMI *)realloc((void *)f->fi, |
| 623 |
|
(j+FRAGBLK)*sizeof(BEAMI)); |
| 624 |
|
if (newp == NULL) { |
| 625 |
|
f->nfrags--; /* graceful failure */ |
| 633 |
|
f->fi[j].nrd = bi->nrd; |
| 634 |
|
break; |
| 635 |
|
} |
| 636 |
< |
copystruct(f->fi+j, f->fi+(j-1)); |
| 636 |
> |
*(f->fi+j) = *(f->fi+(j-1)); |
| 637 |
|
} |
| 638 |
|
/* coalesce adjacent fragments */ |
| 639 |
|
/* successors never empty */ |
| 652 |
|
} |
| 653 |
|
biglob(hp)->nrd -= bi->nrd; /* tell fragment it's free */ |
| 654 |
|
bi->nrd = 0; |
| 655 |
< |
bi->fo = 0L; |
| 655 |
> |
bi->fo = 0; |
| 656 |
> |
hdmarkdirty(hp, i); /* assume we'll reallocate */ |
| 657 |
|
return(1); |
| 658 |
|
} |
| 659 |
|
|
| 660 |
|
|
| 661 |
|
int |
| 662 |
< |
hdfragOK(fd, listlen, listsiz) /* get fragment list status for file */ |
| 663 |
< |
int fd; |
| 664 |
< |
int *listlen; |
| 665 |
< |
register int4 *listsiz; |
| 662 |
> |
hdfragOK( /* get fragment list status for file */ |
| 663 |
> |
int fd, |
| 664 |
> |
int *listlen, |
| 665 |
> |
int32 *listsiz |
| 666 |
> |
) |
| 667 |
|
{ |
| 668 |
< |
register struct fraglist *f; |
| 669 |
< |
register int i; |
| 668 |
> |
struct fraglist *f; |
| 669 |
> |
int i; |
| 670 |
|
|
| 671 |
< |
if (fd < 0 | fd >= nhdfragls || !(f = &hdfragl[fd])->nlinks) |
| 671 |
> |
if ((fd < 0) | (fd >= nhdfragls) || !(f = &hdfragl[fd])->nlinks) |
| 672 |
|
return(0); /* listless */ |
| 673 |
|
if (listlen != NULL) |
| 674 |
|
*listlen = f->nfrags; |
| 683 |
|
} |
| 684 |
|
|
| 685 |
|
|
| 686 |
< |
long |
| 687 |
< |
hdallocfrag(fd, nrays) /* allocate a file fragment */ |
| 688 |
< |
int fd; |
| 689 |
< |
unsigned int4 nrays; |
| 686 |
> |
off_t |
| 687 |
> |
hdallocfrag( /* allocate a file fragment */ |
| 688 |
> |
int fd, |
| 689 |
> |
uint32 nrays |
| 690 |
> |
) |
| 691 |
|
{ |
| 692 |
< |
register struct fraglist *f; |
| 693 |
< |
register int j; |
| 694 |
< |
long nfo; |
| 692 |
> |
struct fraglist *f; |
| 693 |
> |
int j; |
| 694 |
> |
off_t nfo; |
| 695 |
|
|
| 696 |
|
if (nrays == 0) |
| 697 |
|
return(-1L); |
| 714 |
|
|
| 715 |
|
|
| 716 |
|
int |
| 717 |
< |
hdsyncbeam(hp, i) /* sync beam in memory with beam on disk */ |
| 718 |
< |
register HOLO *hp; |
| 719 |
< |
register int i; |
| 717 |
> |
hdsyncbeam( /* sync beam in memory with beam on disk */ |
| 718 |
> |
HOLO *hp, |
| 719 |
> |
int i |
| 720 |
> |
) |
| 721 |
|
{ |
| 722 |
< |
unsigned int4 nrays; |
| 722 |
> |
int fragfreed; |
| 723 |
> |
uint32 nrays; |
| 724 |
|
unsigned int n; |
| 725 |
< |
long nfo; |
| 725 |
> |
off_t nfo; |
| 726 |
|
/* check file status */ |
| 727 |
< |
if (hdfragl[hp->fd].writerr) |
| 728 |
< |
return(-1); |
| 727 |
> |
if (hdfragl[hp->fd].writable <= 0) |
| 728 |
> |
return(hdfragl[hp->fd].writable); |
| 729 |
|
DCHECK(i < 1 | i > nbeams(hp), |
| 730 |
|
CONSISTENCY, "bad beam index in hdsyncbeam"); |
| 731 |
|
/* is current fragment OK? */ |
| 732 |
|
if (hp->bl[i] == NULL || (nrays = hp->bl[i]->nrm) == hp->bi[i].nrd) |
| 733 |
|
return(0); |
| 734 |
< |
if (hdfragflags&FF_WRITE && hp->bi[i].nrd) |
| 735 |
< |
hdfreefrag(hp, i); /* relinquish old fragment */ |
| 734 |
> |
/* relinquish old fragment? */ |
| 735 |
> |
fragfreed = hdfragflags&FF_WRITE && hp->bi[i].nrd && hdfreefrag(hp,i); |
| 736 |
|
if (nrays) { /* get and write new fragment */ |
| 737 |
|
nfo = hdallocfrag(hp->fd, nrays); |
| 738 |
|
errno = 0; |
| 739 |
< |
if (lseek(hp->fd, nfo, 0) < 0) |
| 739 |
> |
if (lseek(hp->fd, nfo, SEEK_SET) < 0) |
| 740 |
|
error(SYSTEM, "cannot seek on holodeck file"); |
| 741 |
|
n = hp->bl[i]->nrm * sizeof(RAYVAL); |
| 742 |
|
if (write(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) { |
| 743 |
< |
hdfragl[hp->fd].writerr++; |
| 743 |
> |
hdfragl[hp->fd].writable = -1; |
| 744 |
|
hdsync(NULL, 0); /* sync directories */ |
| 745 |
|
error(SYSTEM, "write error in hdsyncbeam"); |
| 746 |
|
} |
| 747 |
|
hp->bi[i].fo = nfo; |
| 748 |
|
} else |
| 749 |
< |
hp->bi[i].fo = 0L; |
| 749 |
> |
hp->bi[i].fo = 0; |
| 750 |
|
biglob(hp)->nrd += nrays - hp->bi[i].nrd; |
| 751 |
|
hp->bi[i].nrd = nrays; |
| 752 |
< |
hdmarkdirty(hp, i); /* section directory now out of date */ |
| 752 |
> |
if (!fragfreed) |
| 753 |
> |
hdmarkdirty(hp, i); /* need to flag dir. ent. */ |
| 754 |
|
return(1); |
| 755 |
|
} |
| 756 |
|
|
| 757 |
|
|
| 758 |
|
int |
| 759 |
< |
hdfreebeam(hp, i) /* free beam, writing if dirty */ |
| 760 |
< |
register HOLO *hp; |
| 761 |
< |
register int i; |
| 759 |
> |
hdfreebeam( /* free beam, writing if dirty */ |
| 760 |
> |
HOLO *hp, |
| 761 |
> |
int i |
| 762 |
> |
) |
| 763 |
|
{ |
| 764 |
|
int nchanged; |
| 765 |
|
|
| 769 |
|
nchanged += hdfreebeam(hdlist[i], 0); |
| 770 |
|
return(nchanged); |
| 771 |
|
} |
| 772 |
< |
if (hdfragl[hp->fd].writerr) /* check for file error */ |
| 772 |
> |
if (hdfragl[hp->fd].writable < 0) /* check for file error */ |
| 773 |
|
return(0); |
| 774 |
|
if (i == 0) { /* clear entire holodeck */ |
| 775 |
|
if (blglob(hp)->nrm == 0) |
| 791 |
|
if (nchanged) |
| 792 |
|
hdsyncbeam(hp, i); /* write new fragment */ |
| 793 |
|
blglob(hp)->nrm -= hp->bl[i]->nrm; |
| 794 |
< |
free((char *)hp->bl[i]); /* free memory */ |
| 794 |
> |
free((void *)hp->bl[i]); /* free memory */ |
| 795 |
|
hp->bl[i] = NULL; |
| 796 |
|
return(nchanged); |
| 797 |
|
} |
| 798 |
|
|
| 799 |
|
|
| 800 |
|
int |
| 801 |
< |
hdkillbeam(hp, i) /* delete beam from holodeck */ |
| 802 |
< |
register HOLO *hp; |
| 803 |
< |
register int i; |
| 801 |
> |
hdkillbeam( /* delete beam from holodeck */ |
| 802 |
> |
HOLO *hp, |
| 803 |
> |
int i |
| 804 |
> |
) |
| 805 |
|
{ |
| 806 |
|
int nchanged; |
| 807 |
|
|
| 812 |
|
return(nchanged); |
| 813 |
|
} |
| 814 |
|
if (i == 0) { /* clobber entire holodeck */ |
| 815 |
< |
if (biglob(hp)->nrd == 0 & blglob(hp)->nrm == 0) |
| 815 |
> |
if ((biglob(hp)->nrd == 0) & (blglob(hp)->nrm == 0)) |
| 816 |
|
return(0); /* already empty */ |
| 817 |
|
nchanged = 0; |
| 818 |
|
nchanged = 0; |
| 823 |
|
CONSISTENCY, "bad beam count in hdkillbeam"); |
| 824 |
|
return(nchanged); |
| 825 |
|
} |
| 826 |
< |
DCHECK(i < 1 | i > nbeams(hp), |
| 827 |
< |
CONSISTENCY, "bad beam index to hdkillbeam"); |
| 826 |
> |
DCHECK(i < 1 | i > nbeams(hp), CONSISTENCY, |
| 827 |
> |
"bad beam index to hdkillbeam"); |
| 828 |
> |
DCHECK(!hdfragl[hp->fd].writable, CONSISTENCY, |
| 829 |
> |
"hdkillbeam called on read-only holodeck"); |
| 830 |
|
if (hp->bl[i] != NULL) { /* free memory */ |
| 831 |
|
blglob(hp)->nrm -= nchanged = hp->bl[i]->nrm; |
| 832 |
< |
free((char *)hp->bl[i]); |
| 832 |
> |
free((void *)hp->bl[i]); |
| 833 |
> |
hp->bl[i] = NULL; |
| 834 |
|
} else |
| 835 |
|
nchanged = hp->bi[i].nrd; |
| 836 |
< |
if (hp->bi[i].nrd) { |
| 837 |
< |
if (hdfragflags&FF_KILL) |
| 838 |
< |
hdfreefrag(hp, i); |
| 839 |
< |
biglob(hp)->nrd -= hp->bi[i].nrd; |
| 840 |
< |
hp->bi[i].nrd = 0; /* make sure it's gone */ |
| 736 |
< |
hp->bi[i].fo = 0L; |
| 836 |
> |
if (hp->bi[i].nrd && !(hdfragflags&FF_KILL && hdfreefrag(hp,i))) { |
| 837 |
> |
biglob(hp)->nrd -= hp->bi[i].nrd; /* free failed */ |
| 838 |
> |
hp->bi[i].nrd = 0; |
| 839 |
> |
hp->bi[i].fo = 0; |
| 840 |
> |
hdmarkdirty(hp, i); |
| 841 |
|
} |
| 738 |
– |
hp->bl[i] = NULL; |
| 842 |
|
return(nchanged); |
| 843 |
|
} |
| 844 |
|
|
| 845 |
|
|
| 846 |
|
int |
| 847 |
< |
hdlrulist(hb, nents, n, hp) /* add beams from holodeck to LRU list */ |
| 848 |
< |
register HDBEAMI *hb; /* beam list */ |
| 849 |
< |
int nents; /* current list length */ |
| 850 |
< |
int n; /* maximum list length */ |
| 851 |
< |
register HOLO *hp; /* section we're adding from */ |
| 847 |
> |
hdlrulist( /* add beams from holodeck to LRU list */ |
| 848 |
> |
HDBEAMI *hb, /* beam list */ |
| 849 |
> |
int nents, /* current list length */ |
| 850 |
> |
int n, /* maximum list length */ |
| 851 |
> |
HOLO *hp /* section we're adding from */ |
| 852 |
> |
) |
| 853 |
|
{ |
| 854 |
< |
register int i, j; |
| 854 |
> |
int i, j; |
| 855 |
|
/* insert each beam from hp */ |
| 856 |
|
for (i = 1; i <= nbeams(hp); i++) { |
| 857 |
|
if (hp->bl[i] == NULL) /* check if loaded */ |
| 869 |
|
hb[j].b = i; |
| 870 |
|
break; |
| 871 |
|
} |
| 872 |
< |
copystruct(hb+j, hb+(j-1)); |
| 872 |
> |
*(hb+j) = *(hb+(j-1)); |
| 873 |
|
} |
| 874 |
|
} |
| 875 |
|
return(nents); /* return new list length */ |
| 877 |
|
|
| 878 |
|
|
| 879 |
|
int |
| 880 |
< |
hdfreecache(pct, honly) /* free up cache space, writing changes */ |
| 881 |
< |
int pct; /* maximum percentage to free */ |
| 882 |
< |
register HOLO *honly; /* NULL means check all */ |
| 880 |
> |
hdfreecache( /* free up cache space, writing changes */ |
| 881 |
> |
int pct, /* maximum percentage to free */ |
| 882 |
> |
HOLO *honly /* NULL means check all */ |
| 883 |
> |
) |
| 884 |
|
{ |
| 885 |
|
HDBEAMI hb[FREEBEAMS]; |
| 886 |
|
int freetarget; |
| 887 |
|
int n; |
| 888 |
< |
register int i; |
| 888 |
> |
int i; |
| 889 |
|
#ifdef DEBUG |
| 890 |
|
unsigned membefore; |
| 891 |
|
|
| 921 |
|
} |
| 922 |
|
|
| 923 |
|
|
| 924 |
< |
hddone(hp) /* clean up holodeck section and free */ |
| 925 |
< |
register HOLO *hp; /* NULL means clean up all */ |
| 924 |
> |
void |
| 925 |
> |
hddone( /* clean up holodeck section and free */ |
| 926 |
> |
HOLO *hp /* NULL means clean up all */ |
| 927 |
> |
) |
| 928 |
|
{ |
| 929 |
< |
register int i; |
| 929 |
> |
int i; |
| 930 |
|
|
| 931 |
|
if (hp == NULL) { /* NULL means clean up everything */ |
| 932 |
|
while (hdlist[0] != NULL) |
| 933 |
|
hddone(hdlist[0]); |
| 934 |
< |
free((char *)hdfragl); |
| 934 |
> |
free((void *)hdfragl); |
| 935 |
|
hdfragl = NULL; nhdfragls = 0; |
| 936 |
|
return; |
| 937 |
|
} |
| 946 |
|
i++; |
| 947 |
|
break; |
| 948 |
|
} |
| 949 |
< |
free((char *)hp->bl); /* free beam list */ |
| 950 |
< |
free((char *)hp); /* free holodeck struct */ |
| 949 |
> |
free((void *)hp->bl); /* free beam list */ |
| 950 |
> |
free((void *)hp); /* free holodeck struct */ |
| 951 |
|
} |
