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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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* 9/30/97 GWLarson |
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*/ |
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#include "copyright.h" |
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|
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#include <string.h> |
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|
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#include "holo.h" |
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#include "platform.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) */ |
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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 */ |
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#endif |
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#ifndef MAXFRAGB |
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#define MAXFRAGB 16 /* fragment blocks/file to track (0==inf) */ |
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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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|
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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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memcpy((void *)&hdhead, (void *)hproto, 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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*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)); |
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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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memset((void *)hp->bl, '\0', (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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memset((void *)hp->bi, '\0', (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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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), |
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(fd+1-nhdfragls)*sizeof(struct fraglist)); |
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memset((void *)(hdfragl+nhdfragls), |
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'\0', (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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/* get file length */ |
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hdfragl[fd].flen = lseek(fd, (off_t)0, SEEK_END); |
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} |
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hdrelease(fd) /* stop tracking file fragments for some section */ |
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register int fd; |
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{ |
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if (fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks) |
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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); |
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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; |
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long fpos; |
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off_t rtrunc; |
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off_t fpos; |
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int writable; |
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register HOLO *hp; |
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register int n; |
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/* prepare for system errors */ |
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errno = 0; |
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if ((fpos = lseek(fd, 0L, 1)) < 0) |
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if ((fpos = lseek(fd, (off_t)0, SEEK_CUR)) < 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; |
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} |
192 |
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} else { /* assume we're creating it */ |
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> |
/* check writability */ |
193 |
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if (fd < nhdfragls && hdfragl[fd].nlinks) |
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writable = hdfragl[fd].writable; |
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else |
196 |
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writable = lseek(fd, fpos, SEEK_SET) == fpos && |
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write(fd, (char *)hp, sizeof(HDGRID)) == |
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sizeof(HDGRID); |
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} else { /* else assume we're creating it */ |
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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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for (n = hproto == NULL ? nbeams(hp) : 0; n > 0; n--) |
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if (hp->bi[n].nrd) |
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if (hp->bi[n].nrd) { |
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if (hp->bi[n].fo+hp->bi[n].nrd*sizeof(RAYVAL) > fpos) { |
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rtrunc += hp->bi[n].nrd; |
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hp->bi[n].nrd = 0; |
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} else |
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biglob(hp)->nrd += hp->bi[n].nrd; |
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} |
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if (rtrunc) { |
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sprintf(errmsg, "truncated section, %ld rays lost (%.1f%%)", |
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rtrunc, 100.*rtrunc/(rtrunc+biglob(hp)->nrd)); |
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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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register int j; |
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|
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if (!hp->dirty++) { /* write smudge first time */ |
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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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> |
if (lseek(hp->fd, biglob(hp)->fo+(i-1)*sizeof(BEAMI), |
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SEEK_SET) < 0 || |
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> |
write(hp->fd, (char *)&smudge, |
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sizeof(BEAMI)) != sizeof(BEAMI)) |
257 |
< |
error(SYSTEM, "seek/write error in markdirty"); |
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> |
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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hp->dirseg[j].n = 1; |
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break; |
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} |
269 |
< |
copystruct(hp->dirseg+j, hp->dirseg+(j-1)); |
269 |
> |
*(hp->dirseg+j) = *(hp->dirseg+(j-1)); |
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} |
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do { /* check neighbors */ |
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mindist = nbeams(hp); /* find closest */ |
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hp->dirseg[minpos].n - hp->dirseg[j].s; |
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hp->dirty--; |
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while (++j < hp->dirty) /* close the gap */ |
291 |
< |
copystruct(hp->dirseg+j, hp->dirseg+(j+1)); |
291 |
> |
*(hp->dirseg+j) = *(hp->dirseg+(j+1)); |
292 |
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} while (mindist <= MINDIRSEL); |
293 |
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} |
294 |
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|
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errno = 0; /* write dirty segments */ |
316 |
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for (j = 0; j < hp->dirty; j++) { |
317 |
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if (lseek(hp->fd, biglob(hp)->fo + |
318 |
< |
(hp->dirseg[j].s-1)*sizeof(BEAMI), 0) < 0) |
318 |
> |
(hp->dirseg[j].s-1)*sizeof(BEAMI), SEEK_SET) < 0) |
319 |
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error(SYSTEM, "cannot seek on holodeck file"); |
320 |
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n = hp->dirseg[j].n * sizeof(BEAMI); |
321 |
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if (write(hp->fd, (char *)(hp->bi+hp->dirseg[j].s), n) != n) |
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} |
356 |
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|
357 |
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|
358 |
< |
long |
358 |
> |
off_t |
359 |
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hdfilen(fd) /* return file length for fd */ |
360 |
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int fd; |
361 |
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{ |
362 |
< |
long fpos, flen; |
362 |
> |
off_t fpos, flen; |
363 |
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|
364 |
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if (fd < 0) |
365 |
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return(-1); |
366 |
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if (fd >= nhdfragls || !hdfragl[fd].nlinks) { |
367 |
< |
if ((fpos = lseek(fd, 0L, 1)) < 0) |
367 |
> |
if ((fpos = lseek(fd, (off_t)0, SEEK_CUR)) < 0) |
368 |
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return(-1); |
369 |
< |
flen = lseek(fd, 0L, 2); |
370 |
< |
lseek(fd, fpos, 0); |
369 |
> |
flen = lseek(fd, (off_t)0, SEEK_END); |
370 |
> |
lseek(fd, fpos, SEEK_SET); |
371 |
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return(flen); |
372 |
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} |
373 |
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return(hdfragl[fd].flen); |
374 |
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} |
375 |
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|
376 |
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|
377 |
< |
long |
377 |
> |
off_t |
378 |
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hdfiluse(fd, all) /* compute file usage (in bytes) */ |
379 |
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int fd; /* open file descriptor to check */ |
380 |
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int all; /* include overhead and unflushed data */ |
381 |
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{ |
382 |
< |
long total = 0; |
382 |
> |
off_t total = 0; |
383 |
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register int i, j; |
384 |
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|
385 |
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for (j = 0; hdlist[j] != NULL; j++) { |
409 |
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RAYVAL *p; |
410 |
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int n; |
411 |
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|
412 |
< |
if (nr <= 0) |
413 |
< |
return(NULL); |
414 |
< |
if (i < 1 | i > nbeams(hp)) |
355 |
< |
error(CONSISTENCY, "bad beam index given to hdnewrays"); |
412 |
> |
if (nr <= 0) return(NULL); |
413 |
> |
CHECK((i < 1) | (i > nbeams(hp)), |
414 |
> |
CONSISTENCY, "bad beam index given to hdnewrays"); |
415 |
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if (hp->bl[i] != NULL) |
416 |
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hp->bl[i]->tick = hdclock; /* preempt swap */ |
417 |
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if (hdcachesize > 0 && hdmemuse(0) >= hdcachesize) |
420 |
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n = hp->bi[i].nrd + nr; |
421 |
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hp->bl[i] = (BEAM *)hdrealloc(NULL, hdbsiz(n), "hdnewrays"); |
422 |
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blglob(hp)->nrm += n; |
423 |
< |
if (n = hp->bl[i]->nrm = hp->bi[i].nrd) { |
423 |
> |
if ((n = hp->bl[i]->nrm = hp->bi[i].nrd)) { |
424 |
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errno = 0; |
425 |
< |
if (lseek(hp->fd, hp->bi[i].fo, 0) < 0) |
425 |
> |
if (lseek(hp->fd, hp->bi[i].fo, SEEK_SET) < 0) |
426 |
|
error(SYSTEM, "seek error on holodeck file"); |
427 |
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n *= sizeof(RAYVAL); |
428 |
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if (read(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) |
434 |
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hdbsiz(hp->bl[i]->nrm + nr), "hdnewrays"); |
435 |
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blglob(hp)->nrm += nr; |
436 |
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} |
437 |
+ |
if (hdfragflags&FF_ALLOC && hp->bi[i].nrd) |
438 |
+ |
hdfreefrag(hp, i); /* relinquish old fragment */ |
439 |
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p = hdbray(hp->bl[i]) + hp->bl[i]->nrm; |
440 |
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hp->bl[i]->nrm += nr; /* update in-core structure */ |
441 |
< |
bzero((char *)p, nr*sizeof(RAYVAL)); |
441 |
> |
memset((void *)p, '\0', nr*sizeof(RAYVAL)); |
442 |
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blglob(hp)->tick = hp->bl[i]->tick = hdclock++; /* update LRU clock */ |
443 |
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return(p); /* point to new rays */ |
444 |
|
} |
451 |
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{ |
452 |
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register int n; |
453 |
|
|
454 |
< |
if (i < 1 | i > nbeams(hp)) |
455 |
< |
error(CONSISTENCY, "bad beam index given to hdgetbeam"); |
454 |
> |
CHECK((i < 1) | (i > nbeams(hp)), |
455 |
> |
CONSISTENCY, "bad beam index given to hdgetbeam"); |
456 |
|
if (hp->bl[i] == NULL) { /* load from disk */ |
457 |
|
if (!(n = hp->bi[i].nrd)) |
458 |
|
return(NULL); |
461 |
|
hp->bl[i] = (BEAM *)hdrealloc(NULL, hdbsiz(n), "hdgetbeam"); |
462 |
|
blglob(hp)->nrm += hp->bl[i]->nrm = n; |
463 |
|
errno = 0; |
464 |
< |
if (lseek(hp->fd, hp->bi[i].fo, 0) < 0) |
464 |
> |
if (lseek(hp->fd, hp->bi[i].fo, SEEK_SET) < 0) |
465 |
|
error(SYSTEM, "seek error on holodeck file"); |
466 |
|
n *= sizeof(RAYVAL); |
467 |
|
if (read(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) |
468 |
|
error(SYSTEM, "error reading beam from holodeck file"); |
469 |
+ |
if (hdfragflags&FF_READ) |
470 |
+ |
hdfreefrag(hp, i); /* relinquish old frag. */ |
471 |
|
} |
472 |
|
blglob(hp)->tick = hp->bl[i]->tick = hdclock++; /* update LRU clock */ |
473 |
|
return(hp->bl[i]); |
478 |
|
hdfilord(hb1, hb2) /* order beams for quick loading */ |
479 |
|
register HDBEAMI *hb1, *hb2; |
480 |
|
{ |
481 |
< |
register long c; |
481 |
> |
register off_t c; |
482 |
|
/* residents go first */ |
483 |
|
if (hb2->h->bl[hb2->b] != NULL) |
484 |
|
return(hb1->h->bl[hb1->b] == NULL); |
485 |
|
if (hb1->h->bl[hb1->b] != NULL) |
486 |
|
return(-1); |
487 |
|
/* otherwise sort by file descriptor */ |
488 |
< |
if ((c = hb1->h->fd - hb2->h->fd)) |
489 |
< |
return(c); |
488 |
> |
if (hb1->h->fd != hb2->h->fd) |
489 |
> |
return(hb1->h->fd - hb2->h->fd); |
490 |
|
/* then by position in file */ |
491 |
|
c = hb1->h->bi[hb1->b].fo - hb2->h->bi[hb2->b].fo; |
492 |
|
return(c > 0 ? 1 : c < 0 ? -1 : 0); |
496 |
|
hdloadbeams(hb, n, bf) /* load a list of beams in optimal order */ |
497 |
|
register HDBEAMI *hb; /* list gets sorted by hdfilord() */ |
498 |
|
int n; /* list length */ |
499 |
< |
int (*bf)(); /* callback function (optional) */ |
499 |
> |
void (*bf)(); /* callback function (optional) */ |
500 |
|
{ |
501 |
|
unsigned origcachesize, memuse; |
502 |
|
int bytesloaded, needbytes, bytes2free; |
505 |
|
/* precheck consistency */ |
506 |
|
if (n <= 0) return; |
507 |
|
for (i = n; i--; ) |
508 |
< |
if (hb[i].h == NULL || hb[i].b < 1 | hb[i].b > nbeams(hb[i].h)) |
508 |
> |
if (hb[i].h==NULL || (hb[i].b<1) | (hb[i].b>nbeams(hb[i].h))) |
509 |
|
error(CONSISTENCY, "bad beam in hdloadbeams"); |
510 |
|
/* sort list for optimal access */ |
511 |
< |
qsort((char *)hb, n, sizeof(HDBEAMI), hdfilord); |
511 |
> |
qsort((void *)hb, n, sizeof(HDBEAMI), hdfilord); |
512 |
|
bytesloaded = 0; /* run through loaded beams */ |
513 |
|
for ( ; n && (bp = hb->h->bl[hb->b]) != NULL; n--, hb++) { |
514 |
|
bp->tick = hdclock; /* preempt swap */ |
538 |
|
} |
539 |
|
|
540 |
|
|
541 |
< |
hdfreefrag(fd, bi) /* free a file fragment */ |
542 |
< |
int fd; |
543 |
< |
register BEAMI *bi; |
541 |
> |
int |
542 |
> |
hdfreefrag(hp, i) /* free a file fragment */ |
543 |
> |
HOLO *hp; |
544 |
> |
int i; |
545 |
|
{ |
546 |
+ |
register BEAMI *bi = &hp->bi[i]; |
547 |
|
register struct fraglist *f; |
548 |
|
register int j, k; |
549 |
|
|
550 |
< |
if (bi->nrd == 0) |
551 |
< |
return; |
552 |
< |
#ifdef DEBUG |
553 |
< |
if (fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks) |
554 |
< |
error(CONSISTENCY, "bad file descriptor in hdfreefrag"); |
555 |
< |
#endif |
556 |
< |
f = &hdfragl[fd]; |
550 |
> |
if (bi->nrd <= 0) |
551 |
> |
return(0); |
552 |
> |
DCHECK(hp->fd < 0 | hp->fd >= nhdfragls || !hdfragl[hp->fd].nlinks, |
553 |
> |
CONSISTENCY, "bad file descriptor in hdfreefrag"); |
554 |
> |
f = &hdfragl[hp->fd]; |
555 |
> |
if (!f->writable) |
556 |
> |
return(0); |
557 |
|
if (f->nfrags % FRAGBLK == 0) { /* delete empty remnants */ |
558 |
|
for (j = k = 0; k < f->nfrags; j++, k++) { |
559 |
|
while (f->fi[k].nrd == 0) |
560 |
|
if (++k >= f->nfrags) |
561 |
|
goto endloop; |
562 |
|
if (k > j) |
563 |
< |
copystruct(f->fi+j, f->fi+k); |
563 |
> |
*(f->fi+j) = *(f->fi+k); |
564 |
|
} |
565 |
|
endloop: |
566 |
|
f->nfrags = j; |
570 |
|
if (j >= MAXFRAGB*FRAGBLK) { |
571 |
|
f->nfrags = j--; /* stop list growth */ |
572 |
|
if (bi->nrd <= f->fi[j].nrd) |
573 |
< |
return; /* new one no better than discard */ |
573 |
> |
return(0); /* new one no better than discard */ |
574 |
|
} |
575 |
|
#endif |
576 |
< |
if (j % FRAGBLK == 0) { /* more free list space */ |
576 |
> |
if (j % FRAGBLK == 0) { /* more (or less) free list space */ |
577 |
|
register BEAMI *newp; |
578 |
|
if (f->fi == NULL) |
579 |
|
newp = (BEAMI *)malloc((j+FRAGBLK)*sizeof(BEAMI)); |
580 |
|
else |
581 |
< |
newp = (BEAMI *)realloc((char *)f->fi, |
581 |
> |
newp = (BEAMI *)realloc((void *)f->fi, |
582 |
|
(j+FRAGBLK)*sizeof(BEAMI)); |
583 |
|
if (newp == NULL) { |
584 |
|
f->nfrags--; /* graceful failure */ |
585 |
< |
return; |
585 |
> |
return(0); |
586 |
|
} |
587 |
|
f->fi = newp; |
588 |
|
} |
592 |
|
f->fi[j].nrd = bi->nrd; |
593 |
|
break; |
594 |
|
} |
595 |
< |
copystruct(f->fi+j, f->fi+(j-1)); |
595 |
> |
*(f->fi+j) = *(f->fi+(j-1)); |
596 |
|
} |
597 |
|
/* coalesce adjacent fragments */ |
598 |
|
/* successors never empty */ |
609 |
|
} |
610 |
|
break; |
611 |
|
} |
612 |
+ |
biglob(hp)->nrd -= bi->nrd; /* tell fragment it's free */ |
613 |
+ |
bi->nrd = 0; |
614 |
+ |
bi->fo = 0; |
615 |
+ |
hdmarkdirty(hp, i); /* assume we'll reallocate */ |
616 |
+ |
return(1); |
617 |
|
} |
618 |
|
|
619 |
|
|
620 |
< |
long |
620 |
> |
int |
621 |
> |
hdfragOK(fd, listlen, listsiz) /* get fragment list status for file */ |
622 |
> |
int fd; |
623 |
> |
int *listlen; |
624 |
> |
register int32 *listsiz; |
625 |
> |
{ |
626 |
> |
register struct fraglist *f; |
627 |
> |
register int i; |
628 |
> |
|
629 |
> |
if ((fd < 0) | (fd >= nhdfragls) || !(f = &hdfragl[fd])->nlinks) |
630 |
> |
return(0); /* listless */ |
631 |
> |
if (listlen != NULL) |
632 |
> |
*listlen = f->nfrags; |
633 |
> |
if (listsiz != NULL) |
634 |
> |
for (i = f->nfrags, *listsiz = 0; i--; ) |
635 |
> |
*listsiz += f->fi[i].nrd; |
636 |
> |
#if MAXFRAGB |
637 |
> |
return(f->nfrags < MAXFRAGB*FRAGBLK); |
638 |
> |
#else |
639 |
> |
return(1); /* list never fills up */ |
640 |
> |
#endif |
641 |
> |
} |
642 |
> |
|
643 |
> |
|
644 |
> |
off_t |
645 |
|
hdallocfrag(fd, nrays) /* allocate a file fragment */ |
646 |
|
int fd; |
647 |
< |
unsigned int4 nrays; |
647 |
> |
uint32 nrays; |
648 |
|
{ |
649 |
|
register struct fraglist *f; |
650 |
< |
register int j, k; |
651 |
< |
long nfo; |
650 |
> |
register int j; |
651 |
> |
off_t nfo; |
652 |
|
|
653 |
|
if (nrays == 0) |
654 |
|
return(-1L); |
655 |
< |
#ifdef DEBUG |
656 |
< |
if (fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks) |
563 |
< |
error(CONSISTENCY, "bad file descriptor in hdallocfrag"); |
564 |
< |
#endif |
655 |
> |
DCHECK(fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks, |
656 |
> |
CONSISTENCY, "bad file descriptor in hdallocfrag"); |
657 |
|
f = &hdfragl[fd]; |
658 |
< |
k = -1; /* find closest-sized fragment */ |
659 |
< |
for (j = f->nfrags; j-- > 0; ) |
660 |
< |
if (f->fi[j].nrd >= nrays && |
661 |
< |
(k < 0 || f->fi[j].nrd < f->fi[k].nrd)) |
570 |
< |
if (f->fi[k=j].nrd == nrays) |
571 |
< |
break; |
572 |
< |
if (k < 0) { /* no fragment -- extend file */ |
658 |
> |
for (j = f->nfrags; j-- > 0; ) /* first fit algorithm */ |
659 |
> |
if (f->fi[j].nrd >= nrays) |
660 |
> |
break; |
661 |
> |
if (j < 0) { /* no fragment -- extend file */ |
662 |
|
nfo = f->flen; |
663 |
|
f->flen += nrays*sizeof(RAYVAL); |
664 |
|
} else { /* else use fragment */ |
665 |
< |
nfo = f->fi[k].fo; |
666 |
< |
f->fi[k].fo += nrays*sizeof(RAYVAL); |
667 |
< |
f->fi[k].nrd -= nrays; |
665 |
> |
nfo = f->fi[j].fo; |
666 |
> |
f->fi[j].fo += nrays*sizeof(RAYVAL); |
667 |
> |
f->fi[j].nrd -= nrays; |
668 |
|
} |
669 |
|
return(nfo); |
670 |
|
} |
675 |
|
register HOLO *hp; |
676 |
|
register int i; |
677 |
|
{ |
678 |
< |
unsigned int4 nrays; |
678 |
> |
int fragfreed; |
679 |
> |
uint32 nrays; |
680 |
|
unsigned int n; |
681 |
< |
long nfo; |
681 |
> |
off_t nfo; |
682 |
|
/* check file status */ |
683 |
< |
if (hdfragl[hp->fd].writerr) |
684 |
< |
return(-1); |
685 |
< |
#ifdef DEBUG |
686 |
< |
if (i < 1 | i > nbeams(hp)) |
597 |
< |
error(CONSISTENCY, "bad beam index in hdsyncbeam"); |
598 |
< |
#endif |
683 |
> |
if (hdfragl[hp->fd].writable <= 0) |
684 |
> |
return(hdfragl[hp->fd].writable); |
685 |
> |
DCHECK(i < 1 | i > nbeams(hp), |
686 |
> |
CONSISTENCY, "bad beam index in hdsyncbeam"); |
687 |
|
/* is current fragment OK? */ |
688 |
|
if (hp->bl[i] == NULL || (nrays = hp->bl[i]->nrm) == hp->bi[i].nrd) |
689 |
|
return(0); |
690 |
< |
if (hp->bi[i].nrd) /* relinquish old fragment */ |
691 |
< |
hdfreefrag(hp->fd, &hp->bi[i]); |
690 |
> |
/* relinquish old fragment? */ |
691 |
> |
fragfreed = hdfragflags&FF_WRITE && hp->bi[i].nrd && hdfreefrag(hp,i); |
692 |
|
if (nrays) { /* get and write new fragment */ |
693 |
|
nfo = hdallocfrag(hp->fd, nrays); |
694 |
|
errno = 0; |
695 |
< |
if (lseek(hp->fd, nfo, 0) < 0) |
695 |
> |
if (lseek(hp->fd, nfo, SEEK_SET) < 0) |
696 |
|
error(SYSTEM, "cannot seek on holodeck file"); |
697 |
|
n = hp->bl[i]->nrm * sizeof(RAYVAL); |
698 |
|
if (write(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) { |
699 |
< |
hdfragl[hp->fd].writerr++; |
699 |
> |
hdfragl[hp->fd].writable = -1; |
700 |
|
hdsync(NULL, 0); /* sync directories */ |
701 |
|
error(SYSTEM, "write error in hdsyncbeam"); |
702 |
|
} |
703 |
|
hp->bi[i].fo = nfo; |
704 |
|
} else |
705 |
< |
hp->bi[i].fo = 0L; |
705 |
> |
hp->bi[i].fo = 0; |
706 |
|
biglob(hp)->nrd += nrays - hp->bi[i].nrd; |
707 |
|
hp->bi[i].nrd = nrays; |
708 |
< |
markdirty(hp, i); /* section directory now out of date */ |
708 |
> |
if (!fragfreed) |
709 |
> |
hdmarkdirty(hp, i); /* need to flag dir. ent. */ |
710 |
|
return(1); |
711 |
|
} |
712 |
|
|
724 |
|
nchanged += hdfreebeam(hdlist[i], 0); |
725 |
|
return(nchanged); |
726 |
|
} |
727 |
< |
if (hdfragl[hp->fd].writerr) /* check for file error */ |
727 |
> |
if (hdfragl[hp->fd].writable < 0) /* check for file error */ |
728 |
|
return(0); |
729 |
|
if (i == 0) { /* clear entire holodeck */ |
730 |
+ |
if (blglob(hp)->nrm == 0) |
731 |
+ |
return(0); /* already clear */ |
732 |
|
nchanged = 0; |
733 |
|
for (i = nbeams(hp); i > 0; i--) |
734 |
|
if (hp->bl[i] != NULL) |
735 |
|
nchanged += hdfreebeam(hp, i); |
736 |
+ |
DCHECK(blglob(hp)->nrm != 0, |
737 |
+ |
CONSISTENCY, "bad beam count in hdfreebeam"); |
738 |
|
return(nchanged); |
739 |
|
} |
740 |
< |
#ifdef DEBUG |
741 |
< |
if (i < 1 | i > nbeams(hp)) |
649 |
< |
error(CONSISTENCY, "bad beam index to hdfreebeam"); |
650 |
< |
#endif |
740 |
> |
DCHECK(i < 1 | i > nbeams(hp), |
741 |
> |
CONSISTENCY, "bad beam index to hdfreebeam"); |
742 |
|
if (hp->bl[i] == NULL) |
743 |
|
return(0); |
744 |
|
/* check for additions */ |
746 |
|
if (nchanged) |
747 |
|
hdsyncbeam(hp, i); /* write new fragment */ |
748 |
|
blglob(hp)->nrm -= hp->bl[i]->nrm; |
749 |
< |
free((char *)hp->bl[i]); /* free memory */ |
749 |
> |
free((void *)hp->bl[i]); /* free memory */ |
750 |
|
hp->bl[i] = NULL; |
751 |
|
return(nchanged); |
752 |
|
} |
757 |
|
register HOLO *hp; |
758 |
|
register int i; |
759 |
|
{ |
669 |
– |
static BEAM emptybeam; |
760 |
|
int nchanged; |
761 |
|
|
762 |
|
if (hp == NULL) { /* clobber all holodecks */ |
766 |
|
return(nchanged); |
767 |
|
} |
768 |
|
if (i == 0) { /* clobber entire holodeck */ |
769 |
+ |
if ((biglob(hp)->nrd == 0) & (blglob(hp)->nrm == 0)) |
770 |
+ |
return(0); /* already empty */ |
771 |
|
nchanged = 0; |
772 |
+ |
nchanged = 0; |
773 |
|
for (i = nbeams(hp); i > 0; i--) |
774 |
|
if (hp->bi[i].nrd > 0 || hp->bl[i] != NULL) |
775 |
|
nchanged += hdkillbeam(hp, i); |
776 |
< |
#ifdef DEBUG |
777 |
< |
if (biglob(hp)->nrd != 0 | blglob(hp)->nrm != 0) |
685 |
< |
error(CONSISTENCY, "bad beam count in hdkillbeam"); |
686 |
< |
#endif |
776 |
> |
DCHECK(biglob(hp)->nrd != 0 | blglob(hp)->nrm != 0, |
777 |
> |
CONSISTENCY, "bad beam count in hdkillbeam"); |
778 |
|
return(nchanged); |
779 |
|
} |
780 |
< |
#ifdef DEBUG |
781 |
< |
if (i < 1 | i > nbeams(hp)) |
782 |
< |
error(CONSISTENCY, "bad beam index to hdkillbeam"); |
783 |
< |
#endif |
780 |
> |
DCHECK(i < 1 | i > nbeams(hp), CONSISTENCY, |
781 |
> |
"bad beam index to hdkillbeam"); |
782 |
> |
DCHECK(!hdfragl[hp->fd].writable, CONSISTENCY, |
783 |
> |
"hdkillbeam called on read-only holodeck"); |
784 |
|
if (hp->bl[i] != NULL) { /* free memory */ |
785 |
|
blglob(hp)->nrm -= nchanged = hp->bl[i]->nrm; |
786 |
< |
free((char *)hp->bl[i]); |
786 |
> |
free((void *)hp->bl[i]); |
787 |
> |
hp->bl[i] = NULL; |
788 |
|
} else |
789 |
|
nchanged = hp->bi[i].nrd; |
790 |
< |
if (hp->bi[i].nrd) { /* free file fragment */ |
791 |
< |
hp->bl[i] = &emptybeam; |
792 |
< |
hdsyncbeam(hp, i); |
790 |
> |
if (hp->bi[i].nrd && !(hdfragflags&FF_KILL && hdfreefrag(hp,i))) { |
791 |
> |
biglob(hp)->nrd -= hp->bi[i].nrd; /* free failed */ |
792 |
> |
hp->bi[i].nrd = 0; |
793 |
> |
hp->bi[i].fo = 0; |
794 |
> |
hdmarkdirty(hp, i); |
795 |
|
} |
702 |
– |
hp->bl[i] = NULL; |
796 |
|
return(nchanged); |
797 |
|
} |
798 |
|
|
822 |
|
hb[j].b = i; |
823 |
|
break; |
824 |
|
} |
825 |
< |
copystruct(hb+j, hb+(j-1)); |
825 |
> |
*(hb+j) = *(hb+(j-1)); |
826 |
|
} |
827 |
|
} |
828 |
|
return(nents); /* return new list length */ |
881 |
|
if (hp == NULL) { /* NULL means clean up everything */ |
882 |
|
while (hdlist[0] != NULL) |
883 |
|
hddone(hdlist[0]); |
884 |
< |
free((char *)hdfragl); |
884 |
> |
free((void *)hdfragl); |
885 |
|
hdfragl = NULL; nhdfragls = 0; |
886 |
|
return; |
887 |
|
} |
888 |
|
/* flush all data and free memory */ |
889 |
< |
hdfreebeam(hp, 0); |
797 |
< |
hdsync(hp, 0); |
889 |
> |
hdflush(hp); |
890 |
|
/* release fragment resources */ |
891 |
|
hdrelease(hp->fd); |
892 |
|
/* remove hp from active list */ |
896 |
|
i++; |
897 |
|
break; |
898 |
|
} |
899 |
< |
free((char *)hp->bl); /* free beam list */ |
900 |
< |
free((char *)hp); /* free holodeck struct */ |
899 |
> |
free((void *)hp->bl); /* free beam list */ |
900 |
> |
free((void *)hp); /* free holodeck struct */ |
901 |
|
} |