/*
* ProFTPD - FTP server daemon
* Copyright (c) 1997, 1998 Public Flood Software
* Copyright (c) 1999, 2000 MacGyver aka Habeeb J. Dihu <macgyver@tos.net>
* Copyright (c) 2001-2011 The ProFTPD Project team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA.
*
* As a special exemption, Public Flood Software/MacGyver aka Habeeb J. Dihu
* and other respective copyright holders give permission to link this program
* with OpenSSL, and distribute the resulting executable, without including
* the source code for OpenSSL in the source distribution.
*/
/* Memory allocation/anti-leak system. Yes, this *IS* stolen from Apache
* also. What can I say? It makes sense, and it's safe (more overhead
* though)
* $Id: pool.h,v 1.25 2011/05/23 20:35:35 castaglia Exp $
*/
#ifndef PR_POOL_H
#define PR_POOL_H
typedef struct pool pool;
extern pool *permanent_pool;
void init_pools(void);
void free_pools(void);
pool *make_sub_pool(pool *); /* All pools are sub-pools of perm */
pool *pr_pool_create_sz(pool *, int);
/* Clears out _everything_ in a pool, destroying any sub-pools */
void destroy_pool(struct pool *);
/* Allocate memory from a pool */
void *palloc(struct pool *, int);
void *pallocsz(struct pool *, int);
void *pcalloc(struct pool *, int);
void *pcallocsz(struct pool *, int);
void pr_pool_tag(struct pool *, const char *);
#ifdef PR_USE_DEVEL
void pr_pool_debug_memory(void (*)(const char *, ...));
int pr_pool_debug_set_flags(int);
#define PR_POOL_DEBUG_FL_OOM_DUMP_POOLS 0x001
#endif /* PR_USE_DEVEL */
/* Array management */
typedef struct {
pool *pool;
int elt_size;
int nelts;
int nalloc;
void *elts;
} array_header;
array_header *make_array(pool *, unsigned int, size_t);
void clear_array(array_header *);
void *push_array(array_header *);
void array_cat(array_header *, const array_header *);
array_header *append_arrays(pool *, const array_header *, const array_header *);
array_header *copy_array(pool *, const array_header *);
array_header *copy_array_str(pool *, const array_header *);
array_header *copy_array_hdr(pool *, const array_header *);
/* Alarm signals can easily interfere with the pooled memory operations, thus
* pr_alarms_block() and pr_alarms_unblock() provide for re-entrant security.
*/
extern void pr_alarms_block(void);
extern void pr_alarms_unblock(void);
void register_cleanup(pool *, void *, void (*)(void *), void (*)(void *));
void unregister_cleanup(pool *, void *, void (*)(void *));
/* minimum free bytes in a new block pool */
#define BLOCK_MINFREE PR_TUNABLE_NEW_POOL_SIZE
#endif /* PR_POOL_H */
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