4.3BSD - /usr/ingres/source/iutil/utility.c

   1: # include   <ingres.h>
   2: # include   <access.h>
   3: # include   <sccs.h>
   4: 
   5: SCCSID(@(#)utility.c	8.2	12/8/85)
   6: 
   7: dumptid(tid)
   8: register TID    *tid;
   9: {
  10:     long    pageid;
  11: 
  12:     pluck_page(tid, &pageid);
  13:     printf("tid: %ld/%d\n", pageid, (tid->line_id & I1MASK));
  14:     return (0);
  15: }
  16: 
  17: /*
  18: **	struct for extracting page number from a tid
  19: **	and storing in a long
  20: **
  21: **	We want the line number (lpgx) to be in the low-order part of
  22: **	a long.  Since SUN's and VAXes have the order of the
  23: **	words reversed, this structure must be different.
  24: */
  25: 
  26: struct lpage
  27: {
  28: # ifdef VAX
  29:     char    lpg2, lpg1, lpg0, lpgx;
  30: # else
  31:     char    lpgx, lpg0, lpg1, lpg2;
  32: # endif
  33: };
  34: /*  PLUCK_PAGE
  35: **
  36: **	pluck_page extracts the three byte page_id from a TID
  37: **	and puts it into a long variable with proper allignment.
  38: */
  39: 
  40: pluck_page(t, var)
  41: register TID    *t;
  42: long        *var;
  43: {
  44:     register struct lpage   *v;
  45: 
  46:     v = (struct lpage *) var;
  47:     v->lpg0 = t->pg0;
  48:     v->lpg1 = t->pg1;
  49:     v->lpg2 = t->pg2;
  50:     v->lpgx = 0;
  51:     return (0);
  52: }
  53: 
  54: /*	stuff_page is the reverse of pluck_page	*/
  55: stuff_page(t, var)
  56: register TID    *t;
  57: long        *var;
  58: {
  59:     register struct lpage   *v;
  60: 
  61:     v = (struct lpage *) var;
  62:     t->pg0 = v->lpg0;
  63:     t->pg1 = v->lpg1;
  64:     t->pg2 = v->lpg2;
  65:     return (0);
  66: }

Defined functions

Defined struct's