source3/lib/gencache.h

   1 /*
   2  * Unix SMB/CIFS implementation.
   3  *
   4  * Generic, persistent and shared between processes cache mechanism for use
   5  * by various parts of the Samba code
   6  *
   7  * Copyright (C) Rafal Szczesniak    2002
   8  * Copyright (C) Volker Lendecke     2009
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 3 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24 #ifndef __LIB_GENCACHE_H__
  25 #define __LIB_GENCACHE_H__
  26
  27 #include "replace.h"
  28 #include "system/time.h"
  29 #include "lib/util/data_blob.h"
  30
  31 bool gencache_set(const char *keystr, const char *value, time_t timeout);
  32 bool gencache_del(const char *keystr);
  33 bool gencache_get(const char *keystr, TALLOC_CTX *mem_ctx, char **value,
  34                   time_t *ptimeout);
  35
  36 /*
  37  * This might look like overkill, but namemap_cache.c shows it's
  38  * necessary :-)
  39  */
  40 struct gencache_timeout;
  41 bool gencache_timeout_expired(const struct gencache_timeout *t);
  42
  43 bool gencache_parse(const char *keystr,
  44                     void (*parser)(const struct gencache_timeout *timeout,
  45                                    DATA_BLOB blob,
  46                                    void *private_data),
  47                     void *private_data);
  48 bool gencache_get_data_blob(const char *keystr, TALLOC_CTX *mem_ctx,
  49                             DATA_BLOB *blob,
  50                             time_t *timeout, bool *was_expired);
  51 bool gencache_set_data_blob(const char *keystr, DATA_BLOB blob,
  52                             time_t timeout);
  53 void gencache_iterate_blobs(void (*fn)(const char *key, DATA_BLOB value,
  54                                        time_t timeout, void *private_data),
  55                             void *private_data, const char *pattern);
  56 void gencache_iterate(void (*fn)(const char* key, const char *value,
  57                                  time_t timeout, void* dptr),
  58                       void* data, const char* keystr_pattern);
  59
  60 #endif