1 /* $Id: rsisamc.c,v 1.22 2004-08-26 11:11:59 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
32 static RSFD r_open (RSET ct, int flag);
33 static void r_close (RSFD rfd);
34 static void r_delete (RSET ct);
35 static void r_rewind (RSFD rfd);
36 static int r_read (RSFD rfd, void *buf);
37 static int r_write (RSFD rfd, const void *buf);
39 static const struct rset_control control =
52 const struct rset_control *rset_kind_isamc = &control;
56 struct rset_pp_info *next;
57 struct rset_isamc_info *info;
61 struct rset_isamc_info {
65 int (*cmp)(const void *p1, const void *p2);
66 struct rset_pp_info *ispt_list;
67 struct rset_pp_info *free_list;
70 RSET rsisamc_create( NMEM nmem, int key_size,
71 int (*cmp)(const void *p1, const void *p2),
72 ISAMC is, ISAMC_P pos)
74 RSET rnew=rset_create_base(&control, nmem);
75 struct rset_isamc_info *info;
76 info = (struct rset_isamc_info *) nmem_malloc(rnew->nmem,sizeof(*info));
77 info->key_size = key_size;
79 info->ispt_list = NULL;
80 info->free_list = NULL;
87 static void r_delete (RSET ct)
89 struct rset_isamc_info *info = (struct rset_isamc_info *) ct->priv;
91 logf (LOG_DEBUG, "rsisamc_delete");
92 assert (info->ispt_list == NULL);
96 static void *r_create(RSET ct, const struct rset_control *sel, void *parms)
98 rset_isamc_parms *pt = (rset_isamc_parms *) parms;
99 struct rset_isamc_info *info;
101 info = (struct rset_isamc_info *) xmalloc (sizeof(*info));
104 info->key_size = pt->key_size;
106 info->ispt_list = NULL;
111 RSFD r_open (RSET ct, int flag)
113 struct rset_isamc_info *info = (struct rset_isamc_info *) ct->priv;
114 struct rset_pp_info *ptinfo;
116 logf (LOG_DEBUG, "risamc_open");
117 if (flag & RSETF_WRITE)
119 logf (LOG_FATAL, "ISAMC set type is read-only");
122 ptinfo = info->free_list;
124 info->free_list=ptinfo->next;
126 ptinfo = (struct rset_pp_info *) nmem_malloc (ct->nmem,sizeof(*ptinfo));
127 ptinfo->buf = nmem_malloc (ct->nmem,info->key_size);
129 ptinfo->next = info->ispt_list;
130 info->ispt_list = ptinfo;
131 ptinfo->pt = isc_pp_open (info->is, info->pos);
136 static void r_close (RSFD rfd)
138 struct rset_isamc_info *info = ((struct rset_pp_info*) rfd)->info;
139 struct rset_pp_info **ptinfop;
141 for (ptinfop = &info->ispt_list; *ptinfop; ptinfop = &(*ptinfop)->next)
144 struct rset_pp_info *tmp=(struct rset_pp_info*) rfd;
145 isc_pp_close ((*ptinfop)->pt);
146 *ptinfop = (*ptinfop)->next;
147 tmp->next=info->free_list;
151 logf (LOG_FATAL, "r_close but no rfd match!");
156 static void r_rewind (RSFD rfd)
158 logf (LOG_DEBUG, "rsisamc_rewind");
162 static int r_read (RSFD rfd, void *buf)
164 struct rset_pp_info *pinfo = (struct rset_pp_info *) rfd;
166 r = isc_pp_read(pinfo->pt, buf);
170 static int r_write (RSFD rfd, const void *buf)
172 logf (LOG_FATAL, "ISAMC set type is read-only");