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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 "platform.h" |
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#include "rtprocess.h" |
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|
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#include "holo.h" |
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#ifndef CACHESIZE |
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|
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static int nhdfragls; /* size of hdfragl array */ |
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|
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static HOLO *hdalloc(HDGRID *hproto); |
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static char *hdrealloc(char *ptr, unsigned siz, char *rout); |
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static void hdattach(int fd, int wr); |
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static void hdrelease(int fd); |
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static void hdmarkdirty(HOLO *hp, int i); |
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static unsigned int hdmemuse(int all); |
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static int hdfilord(const void *hb1, const void *hb2); |
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static off_t hdallocfrag(int fd, uint32 nrays); |
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static int hdsyncbeam(HOLO *hp, int i); |
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static int hdlrulist(HDBEAMI *hb, int nents, int n, HOLO *hp); |
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static int hdfreecache(int pct, HOLO *honly); |
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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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hdalloc( /* allocate and set holodeck section based on grid */ |
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HDGRID *hproto |
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) |
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{ |
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HOLO hdhead; |
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register HOLO *hp; |
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int n; |
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/* copy grid to temporary header */ |
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bcopy((void *)hproto, (void *)&hdhead, sizeof(HDGRID)); |
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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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if ((hp = (HOLO *)malloc(n)) == NULL) |
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return(NULL); |
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/* copy header information */ |
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copystruct(hp, &hdhead); |
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> |
*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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< |
bzero((void *)hp->bl, (nbeams(hp)+1)*sizeof(BEAM *)+sizeof(BEAM)); |
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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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< |
bzero((void *)hp->bi, (nbeams(hp)+1)*sizeof(BEAMI)); |
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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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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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< |
unsigned siz; |
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< |
char *rout; |
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> |
hdrealloc( /* (re)allocate memory, retry then error */ |
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> |
char *ptr, |
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> |
unsigned siz, |
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> |
char *rout |
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> |
) |
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{ |
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register char *newp; |
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/* call malloc/realloc */ |
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} |
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|
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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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void |
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hdattach( /* 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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{ |
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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((void *)(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].writable = wr; /* set writable flag */ |
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hdfragl[fd].flen = lseek(fd, (off_t)0, 2); /* get file length */ |
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/* 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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/* Do we need a routine to locate file fragments given known occupants? */ |
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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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void |
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hdrelease( /* stop tracking file fragments for some section */ |
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register int fd |
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) |
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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((void *)hdfragl[fd].fi); |
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} |
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|
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HOLO * |
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hdinit(fd, hproto) /* initialize a holodeck section in a file */ |
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int fd; /* corresponding file descriptor */ |
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HDGRID *hproto; /* holodeck section grid */ |
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> |
extern HOLO * |
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> |
hdinit( /* initialize a holodeck section in a file */ |
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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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{ |
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off_t rtrunc; |
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off_t fpos; |
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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, (off_t)0, 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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if (fd < nhdfragls && hdfragl[fd].nlinks) |
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writable = hdfragl[fd].writable; |
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else |
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< |
writable = lseek(fd, fpos, 0) == fpos && |
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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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fpos = hdfilen(fd); |
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biglob(hp)->nrd = rtrunc = 0; |
| 239 |
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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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return(hp); |
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memerr: |
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error(SYSTEM, "cannot allocate holodeck grid"); |
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return NULL; /* pro forma return */ |
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} |
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|
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|
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< |
hdmarkdirty(hp, i) /* mark holodeck directory position dirty */ |
| 267 |
< |
register HOLO *hp; |
| 268 |
< |
int i; |
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> |
void |
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> |
hdmarkdirty( /* 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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{ |
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static BEAMI smudge = {0, -1}; |
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int mindist, minpos; |
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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)) |
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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[j].n = 1; |
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break; |
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} |
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< |
copystruct(hp->dirseg+j, hp->dirseg+(j-1)); |
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> |
*(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 */ |
| 315 |
< |
copystruct(hp->dirseg+j, hp->dirseg+(j+1)); |
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> |
*(hp->dirseg+j) = *(hp->dirseg+(j+1)); |
| 316 |
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} while (mindist <= MINDIRSEL); |
| 317 |
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} |
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|
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|
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< |
int |
| 321 |
< |
hdsync(hp, all) /* update beams and directory on disk */ |
| 322 |
< |
register HOLO *hp; |
| 323 |
< |
int all; |
| 320 |
> |
extern int |
| 321 |
> |
hdsync( /* update beams and directory on disk */ |
| 322 |
> |
register HOLO *hp, |
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> |
int all |
| 324 |
> |
) |
| 325 |
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{ |
| 326 |
|
register int j, n; |
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|
| 340 |
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errno = 0; /* write dirty segments */ |
| 341 |
|
for (j = 0; j < hp->dirty; j++) { |
| 342 |
|
if (lseek(hp->fd, biglob(hp)->fo + |
| 343 |
< |
(hp->dirseg[j].s-1)*sizeof(BEAMI), 0) < 0) |
| 343 |
> |
(hp->dirseg[j].s-1)*sizeof(BEAMI), SEEK_SET) < 0) |
| 344 |
|
error(SYSTEM, "cannot seek on holodeck file"); |
| 345 |
|
n = hp->dirseg[j].n * sizeof(BEAMI); |
| 346 |
|
if (write(hp->fd, (char *)(hp->bi+hp->dirseg[j].s), n) != n) |
| 351 |
|
} |
| 352 |
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|
| 353 |
|
|
| 354 |
< |
unsigned |
| 355 |
< |
hdmemuse(all) /* return memory usage (in bytes) */ |
| 356 |
< |
int all; /* include overhead (painful) */ |
| 354 |
> |
unsigned int |
| 355 |
> |
hdmemuse( /* return memory usage (in bytes) */ |
| 356 |
> |
int all /* include overhead (painful) */ |
| 357 |
> |
) |
| 358 |
|
{ |
| 359 |
|
long total = 0; |
| 360 |
|
register int i, j; |
| 381 |
|
} |
| 382 |
|
|
| 383 |
|
|
| 384 |
< |
off_t |
| 385 |
< |
hdfilen(fd) /* return file length for fd */ |
| 386 |
< |
int fd; |
| 384 |
> |
extern off_t |
| 385 |
> |
hdfilen( /* return file length for fd */ |
| 386 |
> |
int fd |
| 387 |
> |
) |
| 388 |
|
{ |
| 389 |
|
off_t fpos, flen; |
| 390 |
|
|
| 391 |
|
if (fd < 0) |
| 392 |
|
return(-1); |
| 393 |
|
if (fd >= nhdfragls || !hdfragl[fd].nlinks) { |
| 394 |
< |
if ((fpos = lseek(fd, (off_t)0, 1)) < 0) |
| 394 |
> |
if ((fpos = lseek(fd, (off_t)0, SEEK_CUR)) < 0) |
| 395 |
|
return(-1); |
| 396 |
< |
flen = lseek(fd, (off_t)0, 2); |
| 397 |
< |
lseek(fd, fpos, 0); |
| 396 |
> |
flen = lseek(fd, (off_t)0, SEEK_END); |
| 397 |
> |
lseek(fd, fpos, SEEK_SET); |
| 398 |
|
return(flen); |
| 399 |
|
} |
| 400 |
|
return(hdfragl[fd].flen); |
| 401 |
|
} |
| 402 |
|
|
| 403 |
|
|
| 404 |
< |
off_t |
| 405 |
< |
hdfiluse(fd, all) /* compute file usage (in bytes) */ |
| 406 |
< |
int fd; /* open file descriptor to check */ |
| 407 |
< |
int all; /* include overhead and unflushed data */ |
| 404 |
> |
extern off_t |
| 405 |
> |
hdfiluse( /* compute file usage (in bytes) */ |
| 406 |
> |
int fd /* open file descriptor to check */ |
| 407 |
> |
) |
| 408 |
|
{ |
| 409 |
|
off_t total = 0; |
| 410 |
< |
register int i, j; |
| 410 |
> |
register int j; |
| 411 |
|
|
| 412 |
|
for (j = 0; hdlist[j] != NULL; j++) { |
| 413 |
|
if (hdlist[j]->fd != fd) |
| 414 |
|
continue; |
| 415 |
|
total += biglob(hdlist[j])->nrd * sizeof(RAYVAL); |
| 416 |
< |
if (all) { |
| 417 |
< |
for (i = nbeams(hdlist[j]); i > 0; i--) |
| 418 |
< |
if (hdlist[j]->bl[i] != NULL) |
| 419 |
< |
total += sizeof(RAYVAL) * |
| 416 |
> |
total += nbeams(hdlist[j])*sizeof(BEAMI) + sizeof(HDGRID); |
| 417 |
> |
#if 0 |
| 418 |
> |
for (i = nbeams(hdlist[j]); i > 0; i--) |
| 419 |
> |
if (hdlist[j]->bl[i] != NULL) |
| 420 |
> |
total += sizeof(RAYVAL) * |
| 421 |
|
(hdlist[j]->bl[i]->nrm - |
| 422 |
|
hdlist[j]->bi[i].nrd); |
| 423 |
< |
total += sizeof(HDGRID) + |
| 387 |
< |
nbeams(hdlist[j])*sizeof(BEAMI); |
| 388 |
< |
} |
| 423 |
> |
#endif |
| 424 |
|
} |
| 425 |
< |
return(total); /* does not include fragments */ |
| 425 |
> |
return(total); /* doesn't include fragments, unflushed rays */ |
| 426 |
|
} |
| 427 |
|
|
| 428 |
|
|
| 429 |
< |
RAYVAL * |
| 430 |
< |
hdnewrays(hp, i, nr) /* allocate space for add'l rays and return pointer */ |
| 431 |
< |
register HOLO *hp; |
| 432 |
< |
register int i; |
| 433 |
< |
int nr; /* number of new rays desired */ |
| 429 |
> |
extern RAYVAL * |
| 430 |
> |
hdnewrays( /* allocate space for add'l rays and return pointer */ |
| 431 |
> |
register HOLO *hp, |
| 432 |
> |
register int i, |
| 433 |
> |
int nr /* number of new rays desired */ |
| 434 |
> |
) |
| 435 |
|
{ |
| 436 |
|
RAYVAL *p; |
| 437 |
|
int n; |
| 438 |
|
|
| 439 |
|
if (nr <= 0) return(NULL); |
| 440 |
< |
CHECK(i < 1 | i > nbeams(hp), |
| 440 |
> |
CHECK((i < 1) | (i > nbeams(hp)), |
| 441 |
|
CONSISTENCY, "bad beam index given to hdnewrays"); |
| 442 |
|
if (hp->bl[i] != NULL) |
| 443 |
|
hp->bl[i]->tick = hdclock; /* preempt swap */ |
| 449 |
|
blglob(hp)->nrm += n; |
| 450 |
|
if ((n = hp->bl[i]->nrm = hp->bi[i].nrd)) { |
| 451 |
|
errno = 0; |
| 452 |
< |
if (lseek(hp->fd, hp->bi[i].fo, 0) < 0) |
| 452 |
> |
if (lseek(hp->fd, hp->bi[i].fo, SEEK_SET) < 0) |
| 453 |
|
error(SYSTEM, "seek error on holodeck file"); |
| 454 |
|
n *= sizeof(RAYVAL); |
| 455 |
|
if (read(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) |
| 465 |
|
hdfreefrag(hp, i); /* relinquish old fragment */ |
| 466 |
|
p = hdbray(hp->bl[i]) + hp->bl[i]->nrm; |
| 467 |
|
hp->bl[i]->nrm += nr; /* update in-core structure */ |
| 468 |
< |
bzero((void *)p, nr*sizeof(RAYVAL)); |
| 468 |
> |
memset((void *)p, '\0', nr*sizeof(RAYVAL)); |
| 469 |
|
blglob(hp)->tick = hp->bl[i]->tick = hdclock++; /* update LRU clock */ |
| 470 |
|
return(p); /* point to new rays */ |
| 471 |
|
} |
| 472 |
|
|
| 473 |
|
|
| 474 |
< |
BEAM * |
| 475 |
< |
hdgetbeam(hp, i) /* get beam (from file if necessary) */ |
| 476 |
< |
register HOLO *hp; |
| 477 |
< |
register int i; |
| 474 |
> |
extern BEAM * |
| 475 |
> |
hdgetbeam( /* get beam (from file if necessary) */ |
| 476 |
> |
register HOLO *hp, |
| 477 |
> |
register int i |
| 478 |
> |
) |
| 479 |
|
{ |
| 480 |
|
register int n; |
| 481 |
|
|
| 482 |
< |
CHECK(i < 1 | i > nbeams(hp), |
| 482 |
> |
CHECK((i < 1) | (i > nbeams(hp)), |
| 483 |
|
CONSISTENCY, "bad beam index given to hdgetbeam"); |
| 484 |
|
if (hp->bl[i] == NULL) { /* load from disk */ |
| 485 |
|
if (!(n = hp->bi[i].nrd)) |
| 489 |
|
hp->bl[i] = (BEAM *)hdrealloc(NULL, hdbsiz(n), "hdgetbeam"); |
| 490 |
|
blglob(hp)->nrm += hp->bl[i]->nrm = n; |
| 491 |
|
errno = 0; |
| 492 |
< |
if (lseek(hp->fd, hp->bi[i].fo, 0) < 0) |
| 492 |
> |
if (lseek(hp->fd, hp->bi[i].fo, SEEK_SET) < 0) |
| 493 |
|
error(SYSTEM, "seek error on holodeck file"); |
| 494 |
|
n *= sizeof(RAYVAL); |
| 495 |
|
if (read(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) |
| 503 |
|
|
| 504 |
|
|
| 505 |
|
int |
| 506 |
< |
hdfilord(hb1, hb2) /* order beams for quick loading */ |
| 507 |
< |
register HDBEAMI *hb1, *hb2; |
| 506 |
> |
hdfilord( /* order beams for quick loading */ |
| 507 |
> |
register const void *hb1, |
| 508 |
> |
register const void *hb2 |
| 509 |
> |
) |
| 510 |
|
{ |
| 511 |
|
register off_t c; |
| 512 |
|
/* residents go first */ |
| 513 |
< |
if (hb2->h->bl[hb2->b] != NULL) |
| 514 |
< |
return(hb1->h->bl[hb1->b] == NULL); |
| 515 |
< |
if (hb1->h->bl[hb1->b] != NULL) |
| 513 |
> |
if (((HDBEAMI*)hb2)->h->bl[((HDBEAMI*)hb2)->b] != NULL) |
| 514 |
> |
return(((HDBEAMI*)hb1)->h->bl[((HDBEAMI*)hb1)->b] == NULL); |
| 515 |
> |
if (((HDBEAMI*)hb1)->h->bl[((HDBEAMI*)hb1)->b] != NULL) |
| 516 |
|
return(-1); |
| 517 |
|
/* otherwise sort by file descriptor */ |
| 518 |
< |
if (hb1->h->fd != hb2->h->fd) |
| 519 |
< |
return(hb1->h->fd - hb2->h->fd); |
| 518 |
> |
if (((HDBEAMI*)hb1)->h->fd != ((HDBEAMI*)hb2)->h->fd) |
| 519 |
> |
return(((HDBEAMI*)hb1)->h->fd - ((HDBEAMI*)hb2)->h->fd); |
| 520 |
|
/* then by position in file */ |
| 521 |
< |
c = hb1->h->bi[hb1->b].fo - hb2->h->bi[hb2->b].fo; |
| 521 |
> |
c = ((HDBEAMI*)hb1)->h->bi[((HDBEAMI*)hb1)->b].fo |
| 522 |
> |
- ((HDBEAMI*)hb2)->h->bi[((HDBEAMI*)hb2)->b].fo; |
| 523 |
|
return(c > 0 ? 1 : c < 0 ? -1 : 0); |
| 524 |
|
} |
| 525 |
|
|
| 526 |
|
|
| 527 |
< |
hdloadbeams(hb, n, bf) /* load a list of beams in optimal order */ |
| 528 |
< |
register HDBEAMI *hb; /* list gets sorted by hdfilord() */ |
| 529 |
< |
int n; /* list length */ |
| 530 |
< |
int (*bf)(); /* callback function (optional) */ |
| 527 |
> |
extern void |
| 528 |
> |
hdloadbeams( /* load a list of beams in optimal order */ |
| 529 |
> |
register HDBEAMI *hb, /* list gets sorted by hdfilord() */ |
| 530 |
> |
int n, /* list length */ |
| 531 |
> |
void (*bf)(BEAM *bp, HDBEAMI *hb) /* callback function (optional) */ |
| 532 |
> |
) |
| 533 |
|
{ |
| 534 |
|
unsigned origcachesize, memuse; |
| 535 |
|
int bytesloaded, needbytes, bytes2free; |
| 538 |
|
/* precheck consistency */ |
| 539 |
|
if (n <= 0) return; |
| 540 |
|
for (i = n; i--; ) |
| 541 |
< |
if (hb[i].h==NULL || hb[i].b<1 | hb[i].b>nbeams(hb[i].h)) |
| 541 |
> |
if (hb[i].h==NULL || (hb[i].b<1) | (hb[i].b>nbeams(hb[i].h))) |
| 542 |
|
error(CONSISTENCY, "bad beam in hdloadbeams"); |
| 543 |
|
/* sort list for optimal access */ |
| 544 |
|
qsort((void *)hb, n, sizeof(HDBEAMI), hdfilord); |
| 571 |
|
} |
| 572 |
|
|
| 573 |
|
|
| 574 |
< |
int |
| 575 |
< |
hdfreefrag(hp, i) /* free a file fragment */ |
| 576 |
< |
HOLO *hp; |
| 577 |
< |
int i; |
| 574 |
> |
extern int |
| 575 |
> |
hdfreefrag( /* free a file fragment */ |
| 576 |
> |
HOLO *hp, |
| 577 |
> |
int i |
| 578 |
> |
) |
| 579 |
|
{ |
| 580 |
|
register BEAMI *bi = &hp->bi[i]; |
| 581 |
|
register struct fraglist *f; |
| 594 |
|
if (++k >= f->nfrags) |
| 595 |
|
goto endloop; |
| 596 |
|
if (k > j) |
| 597 |
< |
copystruct(f->fi+j, f->fi+k); |
| 597 |
> |
*(f->fi+j) = *(f->fi+k); |
| 598 |
|
} |
| 599 |
|
endloop: |
| 600 |
|
f->nfrags = j; |
| 626 |
|
f->fi[j].nrd = bi->nrd; |
| 627 |
|
break; |
| 628 |
|
} |
| 629 |
< |
copystruct(f->fi+j, f->fi+(j-1)); |
| 629 |
> |
*(f->fi+j) = *(f->fi+(j-1)); |
| 630 |
|
} |
| 631 |
|
/* coalesce adjacent fragments */ |
| 632 |
|
/* successors never empty */ |
| 651 |
|
} |
| 652 |
|
|
| 653 |
|
|
| 654 |
< |
int |
| 655 |
< |
hdfragOK(fd, listlen, listsiz) /* get fragment list status for file */ |
| 656 |
< |
int fd; |
| 657 |
< |
int *listlen; |
| 658 |
< |
register int32 *listsiz; |
| 654 |
> |
extern int |
| 655 |
> |
hdfragOK( /* get fragment list status for file */ |
| 656 |
> |
int fd, |
| 657 |
> |
int *listlen, |
| 658 |
> |
register int32 *listsiz |
| 659 |
> |
) |
| 660 |
|
{ |
| 661 |
|
register struct fraglist *f; |
| 662 |
|
register int i; |
| 663 |
|
|
| 664 |
< |
if (fd < 0 | fd >= nhdfragls || !(f = &hdfragl[fd])->nlinks) |
| 664 |
> |
if ((fd < 0) | (fd >= nhdfragls) || !(f = &hdfragl[fd])->nlinks) |
| 665 |
|
return(0); /* listless */ |
| 666 |
|
if (listlen != NULL) |
| 667 |
|
*listlen = f->nfrags; |
| 677 |
|
|
| 678 |
|
|
| 679 |
|
off_t |
| 680 |
< |
hdallocfrag(fd, nrays) /* allocate a file fragment */ |
| 681 |
< |
int fd; |
| 682 |
< |
uint32 nrays; |
| 680 |
> |
hdallocfrag( /* allocate a file fragment */ |
| 681 |
> |
int fd, |
| 682 |
> |
uint32 nrays |
| 683 |
> |
) |
| 684 |
|
{ |
| 685 |
|
register struct fraglist *f; |
| 686 |
|
register int j; |
| 707 |
|
|
| 708 |
|
|
| 709 |
|
int |
| 710 |
< |
hdsyncbeam(hp, i) /* sync beam in memory with beam on disk */ |
| 711 |
< |
register HOLO *hp; |
| 712 |
< |
register int i; |
| 710 |
> |
hdsyncbeam( /* sync beam in memory with beam on disk */ |
| 711 |
> |
register HOLO *hp, |
| 712 |
> |
register int i |
| 713 |
> |
) |
| 714 |
|
{ |
| 715 |
|
int fragfreed; |
| 716 |
|
uint32 nrays; |
| 729 |
|
if (nrays) { /* get and write new fragment */ |
| 730 |
|
nfo = hdallocfrag(hp->fd, nrays); |
| 731 |
|
errno = 0; |
| 732 |
< |
if (lseek(hp->fd, nfo, 0) < 0) |
| 732 |
> |
if (lseek(hp->fd, nfo, SEEK_SET) < 0) |
| 733 |
|
error(SYSTEM, "cannot seek on holodeck file"); |
| 734 |
|
n = hp->bl[i]->nrm * sizeof(RAYVAL); |
| 735 |
|
if (write(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) { |
| 748 |
|
} |
| 749 |
|
|
| 750 |
|
|
| 751 |
< |
int |
| 752 |
< |
hdfreebeam(hp, i) /* free beam, writing if dirty */ |
| 753 |
< |
register HOLO *hp; |
| 754 |
< |
register int i; |
| 751 |
> |
extern int |
| 752 |
> |
hdfreebeam( /* free beam, writing if dirty */ |
| 753 |
> |
register HOLO *hp, |
| 754 |
> |
register int i |
| 755 |
> |
) |
| 756 |
|
{ |
| 757 |
|
int nchanged; |
| 758 |
|
|
| 790 |
|
} |
| 791 |
|
|
| 792 |
|
|
| 793 |
< |
int |
| 794 |
< |
hdkillbeam(hp, i) /* delete beam from holodeck */ |
| 795 |
< |
register HOLO *hp; |
| 796 |
< |
register int i; |
| 793 |
> |
extern int |
| 794 |
> |
hdkillbeam( /* delete beam from holodeck */ |
| 795 |
> |
register HOLO *hp, |
| 796 |
> |
register int i |
| 797 |
> |
) |
| 798 |
|
{ |
| 799 |
|
int nchanged; |
| 800 |
|
|
| 805 |
|
return(nchanged); |
| 806 |
|
} |
| 807 |
|
if (i == 0) { /* clobber entire holodeck */ |
| 808 |
< |
if (biglob(hp)->nrd == 0 & blglob(hp)->nrm == 0) |
| 808 |
> |
if ((biglob(hp)->nrd == 0) & (blglob(hp)->nrm == 0)) |
| 809 |
|
return(0); /* already empty */ |
| 810 |
|
nchanged = 0; |
| 811 |
|
nchanged = 0; |
| 837 |
|
|
| 838 |
|
|
| 839 |
|
int |
| 840 |
< |
hdlrulist(hb, nents, n, hp) /* add beams from holodeck to LRU list */ |
| 841 |
< |
register HDBEAMI *hb; /* beam list */ |
| 842 |
< |
int nents; /* current list length */ |
| 843 |
< |
int n; /* maximum list length */ |
| 844 |
< |
register HOLO *hp; /* section we're adding from */ |
| 840 |
> |
hdlrulist( /* add beams from holodeck to LRU list */ |
| 841 |
> |
register HDBEAMI *hb, /* beam list */ |
| 842 |
> |
int nents, /* current list length */ |
| 843 |
> |
int n, /* maximum list length */ |
| 844 |
> |
register HOLO *hp /* section we're adding from */ |
| 845 |
> |
) |
| 846 |
|
{ |
| 847 |
|
register int i, j; |
| 848 |
|
/* insert each beam from hp */ |
| 862 |
|
hb[j].b = i; |
| 863 |
|
break; |
| 864 |
|
} |
| 865 |
< |
copystruct(hb+j, hb+(j-1)); |
| 865 |
> |
*(hb+j) = *(hb+(j-1)); |
| 866 |
|
} |
| 867 |
|
} |
| 868 |
|
return(nents); /* return new list length */ |
| 870 |
|
|
| 871 |
|
|
| 872 |
|
int |
| 873 |
< |
hdfreecache(pct, honly) /* free up cache space, writing changes */ |
| 874 |
< |
int pct; /* maximum percentage to free */ |
| 875 |
< |
register HOLO *honly; /* NULL means check all */ |
| 873 |
> |
hdfreecache( /* free up cache space, writing changes */ |
| 874 |
> |
int pct, /* maximum percentage to free */ |
| 875 |
> |
register HOLO *honly /* NULL means check all */ |
| 876 |
> |
) |
| 877 |
|
{ |
| 878 |
|
HDBEAMI hb[FREEBEAMS]; |
| 879 |
|
int freetarget; |
| 914 |
|
} |
| 915 |
|
|
| 916 |
|
|
| 917 |
< |
hddone(hp) /* clean up holodeck section and free */ |
| 918 |
< |
register HOLO *hp; /* NULL means clean up all */ |
| 917 |
> |
extern void |
| 918 |
> |
hddone( /* clean up holodeck section and free */ |
| 919 |
> |
register HOLO *hp /* NULL means clean up all */ |
| 920 |
> |
) |
| 921 |
|
{ |
| 922 |
|
register int i; |
| 923 |
|
|