| 1 | – | /* Copyright (c) 1998 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 |  | * | 
| 10 |  | #include "holo.h" | 
| 11 |  |  | 
| 12 |  | #ifndef CACHESIZE | 
| 13 | < | #define CACHESIZE       16      /* default cache size (Mbytes, 0==inf) */ | 
| 13 | > | #ifdef SMLMEM | 
| 14 | > | #define CACHESIZE       5 | 
| 15 | > | #else | 
| 16 | > | #define CACHESIZE       17      /* default cache size (Mbytes, 0==inf) */ | 
| 17 |  | #endif | 
| 18 | + | #endif | 
| 19 |  | #ifndef FREEBEAMS | 
| 20 | < | #define FREEBEAMS       1024    /* maximum beams to free at a time */ | 
| 20 | > | #define FREEBEAMS       1500    /* maximum beams to free at a time */ | 
| 21 |  | #endif | 
| 22 |  | #ifndef PCTFREE | 
| 23 |  | #define PCTFREE         15      /* maximum fraction to free (%) */ | 
| 24 |  | #endif | 
| 25 | < | #ifndef MAXFRAG | 
| 26 | < | #define MAXFRAG         32767   /* maximum fragments/file to track (0==inf) */ | 
| 25 | > | #ifndef MAXFRAGB | 
| 26 | > | #define MAXFRAGB        16      /* fragment blocks/file to track (0==inf) */ | 
| 27 |  | #endif | 
| 28 | + | #ifndef FF_DEFAULT | 
| 29 | + | /* when to free a beam fragment */ | 
| 30 | + | #define FF_DEFAULT      (FF_WRITE|FF_KILL) | 
| 31 | + | #endif | 
| 32 | + | #ifndef MINDIRSEL | 
| 33 | + | /* minimum directory seek length */ | 
| 34 | + | #define MINDIRSEL       (4*BUFSIZ/sizeof(BEAMI)) | 
| 35 | + | #endif | 
| 36 |  |  | 
| 37 |  | #ifndef BSD | 
| 38 |  | #define write   writebuf        /* safe i/o routines */ | 
| 39 |  | #define read    readbuf | 
| 40 |  | #endif | 
| 41 |  |  | 
| 42 | < | #define FRAGBLK         256     /* number of fragments to allocate at a time */ | 
| 42 | > | #define FRAGBLK         512     /* number of fragments to allocate at a time */ | 
| 43 |  |  | 
| 44 | + | int     hdfragflags = FF_DEFAULT;       /* tells when to free fragments */ | 
| 45 |  | unsigned        hdcachesize = CACHESIZE*1024*1024;      /* target cache size */ | 
| 46 | < | unsigned long   hdclock;        /* clock value */ | 
| 46 | > | unsigned long   hdclock;                /* clock value */ | 
| 47 |  |  | 
| 48 |  | HOLO    *hdlist[HDMAX+1];       /* holodeck pointers (NULL term.) */ | 
| 49 |  |  | 
| 50 |  | static struct fraglist { | 
| 51 |  | short   nlinks;         /* number of holodeck sections using us */ | 
| 52 | < | short   writerr;        /* write error encountered */ | 
| 52 | > | short   writable;       /* 0 read-only, <0 write error encountered */ | 
| 53 |  | int     nfrags;         /* number of known fragments */ | 
| 54 |  | BEAMI   *fi;            /* fragments, descending file position */ | 
| 55 | < | long    flen;           /* last known file length */ | 
| 55 | > | off_t   flen;           /* last known file length */ | 
| 56 |  | } *hdfragl;             /* fragment lists, indexed by file descriptor */ | 
| 57 |  |  | 
| 58 |  | static int      nhdfragls;      /* size of hdfragl array */ | 
| 59 |  |  | 
| 60 |  |  | 
| 61 | < | hdattach(fd)            /* start tracking file fragments for some section */ | 
| 61 | > | HOLO * | 
| 62 | > | hdalloc(hproto)         /* allocate and set holodeck section based on grid */ | 
| 63 | > | HDGRID  *hproto; | 
| 64 | > | { | 
| 65 | > | HOLO    hdhead; | 
| 66 | > | register HOLO   *hp; | 
| 67 | > | int     n; | 
| 68 | > | /* copy grid to temporary header */ | 
| 69 | > | bcopy((void *)hproto, (void *)&hdhead, sizeof(HDGRID)); | 
| 70 | > | /* compute grid vectors and sizes */ | 
| 71 | > | hdcompgrid(&hdhead); | 
| 72 | > | /* allocate header with directory */ | 
| 73 | > | n = sizeof(HOLO)+nbeams(&hdhead)*sizeof(BEAMI); | 
| 74 | > | if ((hp = (HOLO *)malloc(n)) == NULL) | 
| 75 | > | return(NULL); | 
| 76 | > | /* copy header information */ | 
| 77 | > | copystruct(hp, &hdhead); | 
| 78 | > | /* allocate and clear beam list */ | 
| 79 | > | hp->bl = (BEAM **)malloc((nbeams(hp)+1)*sizeof(BEAM *)+sizeof(BEAM)); | 
| 80 | > | if (hp->bl == NULL) { | 
| 81 | > | free((void *)hp); | 
| 82 | > | return(NULL); | 
| 83 | > | } | 
| 84 | > | bzero((void *)hp->bl, (nbeams(hp)+1)*sizeof(BEAM *)+sizeof(BEAM)); | 
| 85 | > | hp->bl[0] = (BEAM *)(hp->bl+nbeams(hp)+1);      /* set blglob(hp) */ | 
| 86 | > | hp->fd = -1; | 
| 87 | > | hp->dirty = 0; | 
| 88 | > | hp->priv = NULL; | 
| 89 | > | /* clear beam directory */ | 
| 90 | > | bzero((void *)hp->bi, (nbeams(hp)+1)*sizeof(BEAMI)); | 
| 91 | > | return(hp);             /* all is well */ | 
| 92 | > | } | 
| 93 | > |  | 
| 94 | > |  | 
| 95 | > | char * | 
| 96 | > | hdrealloc(ptr, siz, rout)       /* (re)allocate memory, retry then error */ | 
| 97 | > | char    *ptr; | 
| 98 | > | unsigned        siz; | 
| 99 | > | char    *rout; | 
| 100 | > | { | 
| 101 | > | register char   *newp; | 
| 102 | > | /* call malloc/realloc */ | 
| 103 | > | if (ptr == NULL) newp = (char *)malloc(siz); | 
| 104 | > | else newp = (char *)realloc((void *)ptr, siz); | 
| 105 | > | /* check success */ | 
| 106 | > | if (newp == NULL && rout != NULL) { | 
| 107 | > | hdfreecache(25, NULL);  /* free some memory */ | 
| 108 | > | errno = 0;              /* retry */ | 
| 109 | > | newp = hdrealloc(ptr, siz, NULL); | 
| 110 | > | if (newp == NULL) {     /* give up and report error */ | 
| 111 | > | sprintf(errmsg, "out of memory in %s", rout); | 
| 112 | > | error(SYSTEM, errmsg); | 
| 113 | > | } | 
| 114 | > | } | 
| 115 | > | return(newp); | 
| 116 | > | } | 
| 117 | > |  | 
| 118 | > |  | 
| 119 | > | hdattach(fd, wr)        /* start tracking file fragments for some section */ | 
| 120 |  | register int    fd; | 
| 121 | + | int     wr; | 
| 122 |  | { | 
| 123 |  | if (fd >= nhdfragls) { | 
| 124 | < | if (nhdfragls) | 
| 125 | < | hdfragl = (struct fraglist *)realloc((char *)hdfragl, | 
| 126 | < | (fd+1)*sizeof(struct fraglist)); | 
| 58 | < | else | 
| 59 | < | hdfragl = (struct fraglist *)malloc( | 
| 60 | < | (fd+1)*sizeof(struct fraglist)); | 
| 61 | < | if (hdfragl == NULL) | 
| 62 | < | error(SYSTEM, "out of memory in hdattach"); | 
| 63 | < | bzero((char *)(hdfragl+nhdfragls), | 
| 124 | > | hdfragl = (struct fraglist *)hdrealloc((char *)hdfragl, | 
| 125 | > | (fd+1)*sizeof(struct fraglist), "hdattach"); | 
| 126 | > | bzero((void *)(hdfragl+nhdfragls), | 
| 127 |  | (fd+1-nhdfragls)*sizeof(struct fraglist)); | 
| 128 |  | nhdfragls = fd+1; | 
| 129 |  | } | 
| 130 |  | hdfragl[fd].nlinks++; | 
| 131 | < | hdfragl[fd].flen = lseek(fd, 0L, 2);    /* get file length */ | 
| 131 | > | hdfragl[fd].writable = wr;              /* set writable flag */ | 
| 132 | > | hdfragl[fd].flen = lseek(fd, (off_t)0, 2);      /* get file length */ | 
| 133 |  | } | 
| 134 |  |  | 
| 135 |  |  | 
| 142 |  | if (fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks) | 
| 143 |  | return; | 
| 144 |  | if (!--hdfragl[fd].nlinks && hdfragl[fd].nfrags) { | 
| 145 | < | free((char *)hdfragl[fd].fi); | 
| 145 | > | free((void *)hdfragl[fd].fi); | 
| 146 |  | hdfragl[fd].fi = NULL; | 
| 147 |  | hdfragl[fd].nfrags = 0; | 
| 148 |  | } | 
| 149 |  | } | 
| 150 |  |  | 
| 151 |  |  | 
| 88 | – | markdirty(hp)                   /* mark holodeck section directory dirty */ | 
| 89 | – | register HOLO   *hp; | 
| 90 | – | { | 
| 91 | – | static BEAMI    smudge = {0, -1}; | 
| 92 | – |  | 
| 93 | – | if (hp->dirty)          /* already marked? */ | 
| 94 | – | return; | 
| 95 | – | hp->dirty = 1; | 
| 96 | – | if (lseek(hp->fd, biglob(hp)->fo+(nbeams(hp)-1)*sizeof(BEAMI), 0) < 0 | 
| 97 | – | || write(hp->fd, (char *)&smudge, | 
| 98 | – | sizeof(BEAMI)) != sizeof(BEAMI)) | 
| 99 | – | error(SYSTEM, "seek/write error in markdirty"); | 
| 100 | – | } | 
| 101 | – |  | 
| 102 | – |  | 
| 152 |  | HOLO * | 
| 153 |  | hdinit(fd, hproto)      /* initialize a holodeck section in a file */ | 
| 154 |  | int     fd;                     /* corresponding file descriptor */ | 
| 155 |  | HDGRID  *hproto;                /* holodeck section grid */ | 
| 156 |  | { | 
| 157 | < | long    rtrunc; | 
| 158 | < | long    fpos; | 
| 157 | > | off_t   rtrunc; | 
| 158 | > | off_t   fpos; | 
| 159 | > | int     writable; | 
| 160 |  | register HOLO   *hp; | 
| 161 |  | register int    n; | 
| 162 |  | /* prepare for system errors */ | 
| 163 |  | errno = 0; | 
| 164 | < | if ((fpos = lseek(fd, 0L, 1)) < 0) | 
| 164 | > | if ((fpos = lseek(fd, (off_t)0, 1)) < 0) | 
| 165 |  | error(SYSTEM, "cannot determine holodeck file position"); | 
| 166 |  | if (hproto == NULL) {           /* assume we're loading it */ | 
| 167 |  | HDGRID  hpr; | 
| 176 |  | if (read(fd, (char *)(hp->bi+1), n) != n) | 
| 177 |  | error(SYSTEM, "failure loading holodeck directory"); | 
| 178 |  | /* check that it's clean */ | 
| 179 | < | if (hp->bi[nbeams(hp)].fo < 0) | 
| 180 | < | error(WARNING, "dirty holodeck section"); | 
| 181 | < | } else {                        /* assume we're creating it */ | 
| 179 | > | for (n = nbeams(hp); n > 0; n--) | 
| 180 | > | if (hp->bi[n].fo < 0) { | 
| 181 | > | hp->bi[n].fo = 0; | 
| 182 | > | error(WARNING, "dirty holodeck section"); | 
| 183 | > | break; | 
| 184 | > | } | 
| 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) | 
| 194 |  | goto memerr; | 
| 195 |  | /* write header and skeleton */ | 
| 198 |  | sizeof(HDGRID) || | 
| 199 |  | write(fd, (char *)(hp->bi+1), n) != n) | 
| 200 |  | error(SYSTEM, "cannot write header to holodeck file"); | 
| 201 | + | writable = 1; | 
| 202 |  | } | 
| 203 |  | hp->fd = fd; | 
| 204 |  | hp->dirty = 0; | 
| 205 |  | biglob(hp)->fo = fpos + sizeof(HDGRID); | 
| 206 |  | /* start tracking fragments */ | 
| 207 | < | hdattach(fd); | 
| 207 | > | hdattach(fd, writable); | 
| 208 |  | /* check rays on disk */ | 
| 209 |  | fpos = hdfilen(fd); | 
| 210 |  | biglob(hp)->nrd = rtrunc = 0; | 
| 211 |  | for (n = hproto == NULL ? nbeams(hp) : 0; n > 0; n--) | 
| 212 |  | if (hp->bi[n].nrd) | 
| 213 | < | if (hp->bi[n].fo + hp->bi[n].nrd > fpos) { | 
| 213 | > | if (hp->bi[n].fo+hp->bi[n].nrd*sizeof(RAYVAL) > fpos) { | 
| 214 |  | rtrunc += hp->bi[n].nrd; | 
| 215 |  | hp->bi[n].nrd = 0; | 
| 216 |  | } else | 
| 233 |  | } | 
| 234 |  |  | 
| 235 |  |  | 
| 236 | + | hdmarkdirty(hp, i)              /* mark holodeck directory position dirty */ | 
| 237 | + | register HOLO   *hp; | 
| 238 | + | int     i; | 
| 239 | + | { | 
| 240 | + | static BEAMI    smudge = {0, -1}; | 
| 241 | + | int     mindist, minpos; | 
| 242 | + | register int    j; | 
| 243 | + |  | 
| 244 | + | if (!hp->dirty++) {                     /* write smudge first time */ | 
| 245 | + | if (lseek(hp->fd, biglob(hp)->fo+(i-1)*sizeof(BEAMI), 0) < 0 | 
| 246 | + | || write(hp->fd, (char *)&smudge, | 
| 247 | + | sizeof(BEAMI)) != sizeof(BEAMI)) | 
| 248 | + | error(SYSTEM, "seek/write error in hdmarkdirty"); | 
| 249 | + | hp->dirseg[0].s = i; | 
| 250 | + | hp->dirseg[0].n = 1; | 
| 251 | + | return; | 
| 252 | + | } | 
| 253 | + | /* insert into segment list */ | 
| 254 | + | for (j = hp->dirty; j--; ) { | 
| 255 | + | if (!j || hp->dirseg[j-1].s < i) { | 
| 256 | + | hp->dirseg[j].s = i; | 
| 257 | + | hp->dirseg[j].n = 1; | 
| 258 | + | break; | 
| 259 | + | } | 
| 260 | + | copystruct(hp->dirseg+j, hp->dirseg+(j-1)); | 
| 261 | + | } | 
| 262 | + | do {                            /* check neighbors */ | 
| 263 | + | mindist = nbeams(hp);           /* find closest */ | 
| 264 | + | for (j = hp->dirty; --j; ) | 
| 265 | + | if (hp->dirseg[j].s - | 
| 266 | + | (hp->dirseg[j-1].s + hp->dirseg[j-1].n) | 
| 267 | + | < mindist) { | 
| 268 | + | minpos = j; | 
| 269 | + | mindist = hp->dirseg[j].s - | 
| 270 | + | (hp->dirseg[j-1].s + hp->dirseg[j-1].n); | 
| 271 | + | } | 
| 272 | + | /* good enough? */ | 
| 273 | + | if (hp->dirty <= MAXDIRSE && mindist > MINDIRSEL) | 
| 274 | + | break; | 
| 275 | + | j = minpos - 1;                 /* coalesce neighbors */ | 
| 276 | + | if (hp->dirseg[j].s + hp->dirseg[j].n < | 
| 277 | + | hp->dirseg[minpos].s + hp->dirseg[minpos].n) | 
| 278 | + | hp->dirseg[j].n = hp->dirseg[minpos].s + | 
| 279 | + | hp->dirseg[minpos].n - hp->dirseg[j].s; | 
| 280 | + | hp->dirty--; | 
| 281 | + | while (++j < hp->dirty)         /* close the gap */ | 
| 282 | + | copystruct(hp->dirseg+j, hp->dirseg+(j+1)); | 
| 283 | + | } while (mindist <= MINDIRSEL); | 
| 284 | + | } | 
| 285 | + |  | 
| 286 | + |  | 
| 287 |  | int | 
| 288 |  | hdsync(hp, all)                 /* update beams and directory on disk */ | 
| 289 |  | register HOLO   *hp; | 
| 303 |  | hdsyncbeam(hp, j); | 
| 304 |  | if (!hp->dirty)                 /* directory clean? */ | 
| 305 |  | return(0); | 
| 306 | < | errno = 0; | 
| 307 | < | if (lseek(hp->fd, biglob(hp)->fo, 0) < 0) | 
| 308 | < | error(SYSTEM, "cannot seek on holodeck file"); | 
| 309 | < | n = nbeams(hp)*sizeof(BEAMI); | 
| 310 | < | if (write(hp->fd, (char *)(hp->bi+1), n) != n) | 
| 311 | < | error(SYSTEM, "cannot update holodeck section directory"); | 
| 312 | < | hp->dirty = 0; | 
| 306 | > | errno = 0;                      /* write dirty segments */ | 
| 307 | > | for (j = 0; j < hp->dirty; j++) { | 
| 308 | > | if (lseek(hp->fd, biglob(hp)->fo + | 
| 309 | > | (hp->dirseg[j].s-1)*sizeof(BEAMI), 0) < 0) | 
| 310 | > | error(SYSTEM, "cannot seek on holodeck file"); | 
| 311 | > | n = hp->dirseg[j].n * sizeof(BEAMI); | 
| 312 | > | if (write(hp->fd, (char *)(hp->bi+hp->dirseg[j].s), n) != n) | 
| 313 | > | error(SYSTEM, "cannot update section directory"); | 
| 314 | > | } | 
| 315 | > | hp->dirty = 0;                  /* all clean */ | 
| 316 |  | return(1); | 
| 317 |  | } | 
| 318 |  |  | 
| 346 |  | } | 
| 347 |  |  | 
| 348 |  |  | 
| 349 | < | long | 
| 349 | > | off_t | 
| 350 |  | hdfilen(fd)             /* return file length for fd */ | 
| 351 |  | int     fd; | 
| 352 |  | { | 
| 353 | < | long    fpos, flen; | 
| 353 | > | off_t   fpos, flen; | 
| 354 |  |  | 
| 355 |  | if (fd < 0) | 
| 356 |  | return(-1); | 
| 357 |  | 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 |  | return(flen); | 
| 363 |  | } | 
| 365 |  | } | 
| 366 |  |  | 
| 367 |  |  | 
| 368 | < | long | 
| 368 | > | off_t | 
| 369 |  | hdfiluse(fd, all)       /* compute file usage (in bytes) */ | 
| 370 |  | 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)) | 
| 290 | < | 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) | 
| 409 |  | hdfreecache(PCTFREE, NULL);     /* free some space */ | 
| 295 | – | errno = 0; | 
| 410 |  | if (hp->bl[i] == NULL) {                /* allocate (and load) */ | 
| 411 |  | n = hp->bi[i].nrd + nr; | 
| 412 | < | if ((hp->bl[i] = (BEAM *)malloc(hdbsiz(n))) == NULL) | 
| 299 | < | goto memerr; | 
| 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"); | 
| 418 |  | n *= sizeof(RAYVAL); | 
| 421 |  | "error reading beam from holodeck file"); | 
| 422 |  | } | 
| 423 |  | } else {                                /* just grow in memory */ | 
| 424 | < | hp->bl[i] = (BEAM *)realloc( (char *)hp->bl[i], | 
| 425 | < | hdbsiz(hp->bl[i]->nrm + nr) ); | 
| 312 | < | if (hp->bl[i] == NULL) | 
| 313 | < | goto memerr; | 
| 424 | > | hp->bl[i] = (BEAM *)hdrealloc((char *)hp->bl[i], | 
| 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)); | 
| 433 | < | hp->bl[i]->tick = hdclock;              /* update LRU clock */ | 
| 320 | < | blglob(hp)->tick = hdclock++; | 
| 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 */ | 
| 322 | – | memerr: | 
| 323 | – | error(SYSTEM, "out of memory in hdnewrays"); | 
| 435 |  | } | 
| 436 |  |  | 
| 437 |  |  | 
| 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); | 
| 450 |  | if (hdcachesize > 0 && hdmemuse(0) >= hdcachesize) | 
| 451 |  | hdfreecache(PCTFREE, NULL);     /* get free space */ | 
| 452 | < | errno = 0; | 
| 342 | < | if ((hp->bl[i] = (BEAM *)malloc(hdbsiz(n))) == NULL) | 
| 343 | < | error(SYSTEM, "cannot allocate memory for beam"); | 
| 452 | > | hp->bl[i] = (BEAM *)hdrealloc(NULL, hdbsiz(n), "hdgetbeam"); | 
| 453 |  | blglob(hp)->nrm += hp->bl[i]->nrm = n; | 
| 454 | + | errno = 0; | 
| 455 |  | if (lseek(hp->fd, hp->bi[i].fo, 0) < 0) | 
| 456 |  | error(SYSTEM, "seek error on holodeck file"); | 
| 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 | < | hp->bl[i]->tick = hdclock;      /* update LRU clock */ | 
| 352 | < | blglob(hp)->tick = hdclock++; | 
| 463 | > | blglob(hp)->tick = hp->bl[i]->tick = hdclock++; /* update LRU clock */ | 
| 464 |  | return(hp->bl[i]); | 
| 465 |  | } | 
| 466 |  |  | 
| 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); | 
| 490 |  | int     (*bf)();                /* callback function (optional) */ | 
| 491 |  | { | 
| 492 |  | unsigned        origcachesize, memuse; | 
| 382 | – | register BEAM   *bp; | 
| 493 |  | int     bytesloaded, needbytes, bytes2free; | 
| 494 | + | register BEAM   *bp; | 
| 495 |  | register int    i; | 
| 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 */ | 
| 505 | > | bp->tick = hdclock;     /* preempt swap */ | 
| 506 |  | bytesloaded += bp->nrm; | 
| 507 |  | if (bf != NULL) | 
| 508 | < | (*bf)(bp, hb->h, hb->b); | 
| 508 | > | (*bf)(bp, hb); | 
| 509 |  | } | 
| 510 |  | bytesloaded *= sizeof(RAYVAL); | 
| 511 |  | if ((origcachesize = hdcachesize) > 0) { | 
| 524 |  | } | 
| 525 |  | for (i = 0; i < n; i++) | 
| 526 |  | if ((bp = hdgetbeam(hb[i].h, hb[i].b)) != NULL && bf != NULL) | 
| 527 | < | (*bf)(bp, hb[i].h, hb[i].b); | 
| 527 | > | (*bf)(bp, hb+i); | 
| 528 |  | hdcachesize = origcachesize;    /* resume dynamic swapping */ | 
| 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 | < | f->fi = (BEAMI *)malloc(FRAGBLK*sizeof(BEAMI)); | 
| 570 | > | newp = (BEAMI *)malloc((j+FRAGBLK)*sizeof(BEAMI)); | 
| 571 |  | else | 
| 572 | < | f->fi = (BEAMI *)realloc((char *)f->fi, | 
| 572 | > | newp = (BEAMI *)realloc((void *)f->fi, | 
| 573 |  | (j+FRAGBLK)*sizeof(BEAMI)); | 
| 574 | < | if (f->fi == NULL) | 
| 575 | < | error(SYSTEM, "out of memory in hdfreefrag"); | 
| 574 | > | if (newp == NULL) { | 
| 575 | > | f->nfrags--;    /* graceful failure */ | 
| 576 | > | return(0); | 
| 577 | > | } | 
| 578 | > | f->fi = newp; | 
| 579 |  | } | 
| 580 |  | for ( ; ; j--) {                /* insert in descending list */ | 
| 581 |  | if (!j || bi->fo < f->fi[j-1].fo) { | 
| 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) | 
| 498 | < | error(CONSISTENCY, "bad file descriptor in hdallocfrag"); | 
| 499 | < | #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)) | 
| 505 | < | if (f->fi[k=j].nrd == nrays) | 
| 506 | < | break; | 
| 507 | < | 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)) | 
| 532 | < | error(CONSISTENCY, "bad beam index in hdsyncbeam"); | 
| 533 | < | #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);                  /* 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)) | 
| 584 | < | error(CONSISTENCY, "bad beam index to hdfreebeam"); | 
| 585 | < | #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 |  | { | 
| 604 | – | 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) | 
| 620 | < | error(CONSISTENCY, "bad beam count in hdkillbeam"); | 
| 621 | < | #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 |  | } | 
| 637 | – | hp->bl[i] = NULL; | 
| 787 |  | return(nchanged); | 
| 788 |  | } | 
| 789 |  |  | 
| 829 |  | int     freetarget; | 
| 830 |  | int     n; | 
| 831 |  | register int    i; | 
| 832 | + | #ifdef DEBUG | 
| 833 | + | unsigned        membefore; | 
| 834 | + |  | 
| 835 | + | membefore = hdmemuse(0); | 
| 836 | + | #endif | 
| 837 |  | /* compute free target */ | 
| 838 |  | freetarget = (honly != NULL) ? blglob(honly)->nrm : | 
| 839 |  | hdmemuse(0)/sizeof(RAYVAL) ; | 
| 854 |  | break; | 
| 855 |  | } | 
| 856 |  | hdsync(honly, 0);       /* synchronize directories as necessary */ | 
| 857 | + | #ifdef DEBUG | 
| 858 | + | sprintf(errmsg, | 
| 859 | + | "%dK before, %dK after hdfreecache (%dK total), %d rays short\n", | 
| 860 | + | membefore>>10, hdmemuse(0)>>10, hdmemuse(1)>>10, freetarget); | 
| 861 | + | wputs(errmsg); | 
| 862 | + | #endif | 
| 863 |  | return(-freetarget);    /* return how far past goal we went */ | 
| 864 |  | } | 
| 865 |  |  | 
| 872 |  | if (hp == NULL) {               /* NULL means clean up everything */ | 
| 873 |  | while (hdlist[0] != NULL) | 
| 874 |  | hddone(hdlist[0]); | 
| 875 | + | free((void *)hdfragl); | 
| 876 | + | hdfragl = NULL; nhdfragls = 0; | 
| 877 |  | return; | 
| 878 |  | } | 
| 879 |  | /* flush all data and free memory */ | 
| 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 |  | } |