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#include <string.h> |
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#include "holo.h" |
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#include "platform.h" |
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#include "rtprocess.h" |
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#include "holo.h" |
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#ifndef CACHESIZE |
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#ifdef SMLMEM |
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#define CACHESIZE 5 |
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static int nhdfragls; /* size of hdfragl array */ |
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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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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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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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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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/* Do we need a routine to locate file fragments given known occupants? */ |
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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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return; |
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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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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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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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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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} |
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int |
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hdsync(hp, all) /* update beams and directory on disk */ |
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register HOLO *hp; |
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int all; |
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extern int |
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hdsync( /* update beams and directory on disk */ |
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register HOLO *hp, |
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int all |
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) |
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{ |
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register int j, n; |
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} |
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unsigned |
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hdmemuse(all) /* return memory usage (in bytes) */ |
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int all; /* include overhead (painful) */ |
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unsigned int |
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hdmemuse( /* return memory usage (in bytes) */ |
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int all /* include overhead (painful) */ |
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) |
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{ |
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long total = 0; |
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register int i, j; |
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} |
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off_t |
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hdfilen(fd) /* return file length for fd */ |
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int fd; |
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extern off_t |
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hdfilen( /* return file length for fd */ |
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int fd |
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) |
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{ |
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off_t fpos, flen; |
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} |
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off_t |
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hdfiluse(fd, all) /* compute file usage (in bytes) */ |
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int fd; /* open file descriptor to check */ |
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int all; /* include overhead and unflushed data */ |
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extern off_t |
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hdfiluse( /* compute file usage (in bytes) */ |
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int fd, /* open file descriptor to check */ |
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int all /* include overhead and unflushed data */ |
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) |
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{ |
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off_t total = 0; |
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register int i, j; |
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} |
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RAYVAL * |
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hdnewrays(hp, i, nr) /* allocate space for add'l rays and return pointer */ |
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register HOLO *hp; |
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register int i; |
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int nr; /* number of new rays desired */ |
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extern RAYVAL * |
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hdnewrays( /* allocate space for add'l rays and return pointer */ |
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register HOLO *hp, |
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register int i, |
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int nr /* number of new rays desired */ |
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) |
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{ |
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RAYVAL *p; |
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int n; |
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} |
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BEAM * |
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hdgetbeam(hp, i) /* get beam (from file if necessary) */ |
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register HOLO *hp; |
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register int i; |
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extern BEAM * |
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hdgetbeam( /* get beam (from file if necessary) */ |
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register HOLO *hp, |
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register int i |
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) |
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{ |
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register int n; |
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int |
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hdfilord(hb1, hb2) /* order beams for quick loading */ |
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register HDBEAMI *hb1, *hb2; |
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hdfilord( /* order beams for quick loading */ |
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register const void *hb1, |
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register const void *hb2 |
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) |
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{ |
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register off_t c; |
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/* residents go first */ |
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if (hb2->h->bl[hb2->b] != NULL) |
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return(hb1->h->bl[hb1->b] == NULL); |
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if (hb1->h->bl[hb1->b] != NULL) |
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if (((HDBEAMI*)hb2)->h->bl[((HDBEAMI*)hb2)->b] != NULL) |
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return(((HDBEAMI*)hb1)->h->bl[((HDBEAMI*)hb1)->b] == NULL); |
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if (((HDBEAMI*)hb1)->h->bl[((HDBEAMI*)hb1)->b] != NULL) |
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return(-1); |
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/* otherwise sort by file descriptor */ |
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if (hb1->h->fd != hb2->h->fd) |
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return(hb1->h->fd - hb2->h->fd); |
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if (((HDBEAMI*)hb1)->h->fd != ((HDBEAMI*)hb2)->h->fd) |
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return(((HDBEAMI*)hb1)->h->fd - ((HDBEAMI*)hb2)->h->fd); |
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/* then by position in file */ |
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c = hb1->h->bi[hb1->b].fo - hb2->h->bi[hb2->b].fo; |
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c = ((HDBEAMI*)hb1)->h->bi[((HDBEAMI*)hb1)->b].fo |
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- ((HDBEAMI*)hb2)->h->bi[((HDBEAMI*)hb2)->b].fo; |
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return(c > 0 ? 1 : c < 0 ? -1 : 0); |
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} |
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hdloadbeams(hb, n, bf) /* load a list of beams in optimal order */ |
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register HDBEAMI *hb; /* list gets sorted by hdfilord() */ |
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int n; /* list length */ |
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void (*bf)(); /* callback function (optional) */ |
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extern void |
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hdloadbeams( /* load a list of beams in optimal order */ |
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register HDBEAMI *hb, /* list gets sorted by hdfilord() */ |
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int n, /* list length */ |
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void (*bf)(BEAM *bp, HDBEAMI *hb) /* callback function (optional) */ |
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) |
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{ |
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unsigned origcachesize, memuse; |
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int bytesloaded, needbytes, bytes2free; |
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} |
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int |
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hdfreefrag(hp, i) /* free a file fragment */ |
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HOLO *hp; |
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int i; |
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extern int |
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hdfreefrag( /* free a file fragment */ |
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HOLO *hp, |
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int i |
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) |
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{ |
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register BEAMI *bi = &hp->bi[i]; |
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register struct fraglist *f; |
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} |
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int |
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hdfragOK(fd, listlen, listsiz) /* get fragment list status for file */ |
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int fd; |
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int *listlen; |
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register int32 *listsiz; |
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extern int |
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hdfragOK( /* get fragment list status for file */ |
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int fd, |
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int *listlen, |
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register int32 *listsiz |
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) |
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{ |
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register struct fraglist *f; |
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register int i; |
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off_t |
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hdallocfrag(fd, nrays) /* allocate a file fragment */ |
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int fd; |
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uint32 nrays; |
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hdallocfrag( /* allocate a file fragment */ |
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int fd, |
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uint32 nrays |
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) |
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{ |
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register struct fraglist *f; |
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register int j; |
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int |
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hdsyncbeam(hp, i) /* sync beam in memory with beam on disk */ |
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register HOLO *hp; |
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register int i; |
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hdsyncbeam( /* sync beam in memory with beam on disk */ |
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register HOLO *hp, |
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register int i |
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) |
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{ |
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int fragfreed; |
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uint32 nrays; |
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} |
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int |
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hdfreebeam(hp, i) /* free beam, writing if dirty */ |
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register HOLO *hp; |
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register int i; |
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extern int |
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hdfreebeam( /* free beam, writing if dirty */ |
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register HOLO *hp, |
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register int i |
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) |
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{ |
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int nchanged; |
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} |
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int |
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hdkillbeam(hp, i) /* delete beam from holodeck */ |
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register HOLO *hp; |
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register int i; |
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extern int |
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hdkillbeam( /* delete beam from holodeck */ |
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register HOLO *hp, |
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register int i |
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) |
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{ |
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int nchanged; |
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int |
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hdlrulist(hb, nents, n, hp) /* add beams from holodeck to LRU list */ |
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register HDBEAMI *hb; /* beam list */ |
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int nents; /* current list length */ |
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int n; /* maximum list length */ |
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register HOLO *hp; /* section we're adding from */ |
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hdlrulist( /* add beams from holodeck to LRU list */ |
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> |
register HDBEAMI *hb, /* beam list */ |
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int nents, /* current list length */ |
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int n, /* maximum list length */ |
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register HOLO *hp /* section we're adding from */ |
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) |
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{ |
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register int i, j; |
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/* insert each beam from hp */ |
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int |
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hdfreecache(pct, honly) /* free up cache space, writing changes */ |
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int pct; /* maximum percentage to free */ |
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register HOLO *honly; /* NULL means check all */ |
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> |
hdfreecache( /* free up cache space, writing changes */ |
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> |
int pct, /* maximum percentage to free */ |
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register HOLO *honly /* NULL means check all */ |
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) |
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{ |
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HDBEAMI hb[FREEBEAMS]; |
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int freetarget; |
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} |
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hddone(hp) /* clean up holodeck section and free */ |
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< |
register HOLO *hp; /* NULL means clean up all */ |
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> |
extern void |
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> |
hddone( /* clean up holodeck section and free */ |
921 |
> |
register HOLO *hp /* NULL means clean up all */ |
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> |
) |
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{ |
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register int i; |
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