1 /* $Id: rset.c,v 1.29 2004-08-31 10:43:39 heikki Exp $
2 Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004
5 This file is part of the Zebra server.
7 Zebra is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with Zebra; see the file LICENSE.zebra. If not, write to the
19 Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
33 /* creates an rfd. Either allocates a new one, in which case the priv */
34 /* pointer is null, and will have to be filled in, or picks up one */
35 /* from the freelist, in which case the priv is already allocated, */
36 /* and presumably everything that hangs from it as well */
38 RSFD rfd_create_base(RSET rs)
40 RSFD rnew=rs->free_list;
42 rs->free_list=rnew->next;
43 assert(rnew->rset==rs);
44 /* logf(LOG_DEBUG,"rfd-create_base (fl): rfd=%p rs=%p fl=%p priv=%p",
45 rnew, rs, rs->free_list, rnew->priv); */
47 rnew=nmem_malloc(rs->nmem, sizeof(*rnew));
50 /* logf(LOG_DEBUG,"rfd_create_base (new): rfd=%p rs=%p fl=%p priv=%p",
51 rnew, rs, rs->free_list, rnew->priv); */
53 rnew->next=NULL; /* not part of any (free?) list */
57 /* puts an rfd into the freelist of the rset. Only when the rset gets */
58 /* deleted, will all the nmem disappear */
59 void rfd_delete_base(RSFD rfd)
62 /* logf(LOG_DEBUG,"rfd_delete_base: rfd=%p rs=%p priv=%p fl=%p",
63 rfd, rs, rfd->priv, rs->free_list); */
64 assert(NULL == rfd->next);
65 rfd->next=rs->free_list;
69 RSET rset_create_base(const struct rset_control *sel, NMEM nmem)
70 /* FIXME - Add keysize and cmp function */
71 /* FIXME - Add a general key-func block for cmp, dump, etc */
79 rnew = (RSET) nmem_malloc(M,sizeof(*rnew));
80 /* logf (LOG_DEBUG, "rs_create(%s) rs=%p (nm=%p)", sel->desc, rnew, nmem); */
94 void rset_delete (RSET rs)
97 /* logf(LOG_DEBUG,"rs_delete(%s), rs=%p, count=%d",
98 rs->control->desc, rs, rs->count); */
101 (*rs->control->f_delete)(rs);
103 nmem_destroy(rs->nmem);
107 RSET rset_dup (RSET rs)
114 void rset_default_pos (RSFD rfd, double *current, double *total)
115 { /* This should never really be needed, but it is still used in */
116 /* those rsets that we don't really plan to use, like isam-s */
120 *current=-1; /* signal that pos is not implemented */
122 } /* rset_default_pos */
125 int rset_default_forward(RSFD rfd, void *buf,
126 int (*cmpfunc)(const void *p1, const void *p2),
127 const void *untilbuf)
131 logf (LOG_DEBUG, "rset_default_forward starting '%s' (ct=%p rfd=%p)",
132 rfd->rset->control->desc, rfd->rset, rfd);
133 /* key_logdump(LOG_DEBUG, untilbuf); */
134 while ( (cmp==2) && (more))
136 logf (LOG_DEBUG, "rset_default_forward looping m=%d c=%d",more,cmp);
137 more=rset_read(rfd, buf);
139 cmp=(*cmpfunc)(untilbuf,buf);
141 key_logdump(LOG_DEBUG,buf); */
143 logf (LOG_DEBUG, "rset_default_forward exiting m=%d c=%d",more,cmp);