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/*-
* Copyright 2019 Vsevolod Stakhov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef RSPAMD_MEM_POOL_INTERNAL_H
#define RSPAMD_MEM_POOL_INTERNAL_H
/*
* Internal memory pool stuff
*/
#define align_ptr(p, a) \
((guint8 *) ((uintptr_t) (p) + ((-(intptr_t)(p)) & ((a) - 1))))
enum rspamd_mempool_chain_type {
RSPAMD_MEMPOOL_NORMAL = 0,
RSPAMD_MEMPOOL_SHARED,
RSPAMD_MEMPOOL_MAX
};
#define ENTRY_LEN 128
#define ENTRY_NELTS 64
struct entry_elt {
guint32 fragmentation;
guint32 leftover;
};
struct rspamd_mempool_entry_point {
gchar src[ENTRY_LEN];
guint32 cur_suggestion;
guint32 cur_elts;
guint32 cur_vars;
struct entry_elt elts[ENTRY_NELTS];
};
/**
* Destructors list item structure
*/
struct _pool_destructors {
rspamd_mempool_destruct_t func; /**< pointer to destructor */
void *data; /**< data to free */
const gchar *function; /**< function from which this destructor was added */
const gchar *loc; /**< line number */
struct _pool_destructors *next;
};
struct rspamd_mempool_variable {
gpointer data;
rspamd_mempool_destruct_t dtor;
};
KHASH_INIT (rspamd_mempool_vars_hash,
guint32, struct rspamd_mempool_variable, 1,
kh_int_hash_func, kh_int_hash_equal);
struct rspamd_mempool_specific {
struct _pool_chain *pools[RSPAMD_MEMPOOL_MAX];
struct _pool_destructors *dtors_head, *dtors_tail;
GPtrArray *trash_stack;
khash_t(rspamd_mempool_vars_hash) *variables;
struct rspamd_mempool_entry_point *entry;
gsize elt_len; /**< size of an element */
gsize used_memory;
guint wasted_memory;
gint flags;
};
/**
* Pool page structure
*/
struct _pool_chain {
guint8 *begin; /**< begin of pool chain block */
guint8 *pos; /**< current start of free space in block */
gsize slice_size; /**< length of block */
struct _pool_chain *next;
};
#endif
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