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/*
* include/haproxy/shctx.h - shared context management functions for SSL
*
* Copyright (C) 2011-2012 EXCELIANCE
*
* Author: Emeric Brun - emeric@exceliance.fr
*
* 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.
*/
#ifndef __HAPROXY_SHCTX_H
#define __HAPROXY_SHCTX_H
#include <haproxy/api.h>
#include <haproxy/list.h>
#include <haproxy/shctx-t.h>
#include <haproxy/thread.h>
int shctx_init(struct shared_context **orig_shctx,
int maxblocks, int blocksize, unsigned int maxobjsz,
int extra, int shared);
struct shared_block *shctx_row_reserve_hot(struct shared_context *shctx,
struct shared_block *last, int data_len);
void shctx_row_inc_hot(struct shared_context *shctx, struct shared_block *first);
void shctx_row_dec_hot(struct shared_context *shctx, struct shared_block *first);
int shctx_row_data_append(struct shared_context *shctx,
struct shared_block *first, struct shared_block *from,
unsigned char *data, int len);
int shctx_row_data_get(struct shared_context *shctx, struct shared_block *first,
unsigned char *dst, int offset, int len);
/* Lock functions */
extern int use_shared_mem;
#define shctx_lock(shctx) if (use_shared_mem) HA_SPIN_LOCK(SHCTX_LOCK, &shctx->lock)
#define shctx_unlock(shctx) if (use_shared_mem) HA_SPIN_UNLOCK(SHCTX_LOCK, &shctx->lock)
/* List Macros */
/*
* Insert <s> block after <head> which is not necessarily the head of a list,
* so between <head> and the next element after <head>.
*/
static inline void shctx_block_append_hot(struct shared_context *shctx,
struct list *head,
struct shared_block *s)
{
shctx->nbav--;
LIST_DELETE(&s->list);
LIST_INSERT(head, &s->list);
}
static inline void shctx_block_set_hot(struct shared_context *shctx,
struct shared_block *s)
{
shctx->nbav--;
LIST_DELETE(&s->list);
LIST_APPEND(&shctx->hot, &s->list);
}
static inline void shctx_block_set_avail(struct shared_context *shctx,
struct shared_block *s)
{
shctx->nbav++;
LIST_DELETE(&s->list);
LIST_APPEND(&shctx->avail, &s->list);
}
#endif /* __HAPROXY_SHCTX_H */
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