1 #include <u.h> 2 #include <libc.h> 3 #include <bio.h> 4 #include <ndb.h> 5 6 /* remove a from t and free it */ 7 Ndbtuple* ndbdiscard(Ndbtuple * t,Ndbtuple * a)8ndbdiscard(Ndbtuple *t, Ndbtuple *a) 9 { 10 Ndbtuple *nt; 11 12 /* unchain a */ 13 for(nt = t; nt != nil; nt = nt->entry){ 14 if(nt->line == a) 15 nt->line = a->line; 16 if(nt->entry == a) 17 nt->entry = a->entry; 18 } 19 20 /* a may be start of chain */ 21 if(t == a) 22 t = a->entry; 23 24 /* free a */ 25 a->entry = nil; 26 ndbfree(a); 27 28 ndbsetmalloctag(t, getcallerpc(&t)); 29 return t; 30 } 31