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/* dctrl-tools - Debian control file inspection tools
Copyright © 2004 Antti-Juhani Kaijanaho
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, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef PARA_POOL_H
#define PARA_POOL_H
#include <stdint.h>
#include <stdlib.h>
#include "align.h"
#include "msg.h"
#include "paragraph.h"
#define NUM_PAGES 1
struct para_pages {
size_t max;
size_t nap; // next allocation "pointer" (offset from base of this)
struct para_pages * next;
};
struct para_pool_private {
struct para_pages * curr_pages;
};
typedef struct para_pool_private para_pool_t;
static inline
void para_pool_init(para_pool_t * pp)
{
pp->curr_pages = 0;
}
void para_pool_fini(para_pool_t *); // deallocates everything allocated as well
/*
static inline
bool para_pool_more(para_pool_t * pp)
{
size_t sz = NUM_PAGES * get_pagesize();
struct para_pages * np = malloc(sz);
assert(sizeof *np < sz);
if (np == 0) return false;
np->next = pp->curr_pages;
pp->curr_pages = np;
np->nap = align(sizeof *np, MAX_ALIGN, true);
np->max = sz;
return true;
}
*/
// calls para_init
static inline
para_t * new_para(para_pool_t * ppo, para_parser_t * ppa)
{
para_t * rv = 0;
/*
struct para_pages * cp = ppo->curr_pages;
if (cp == 0 || cp->nap + sizeof *rv >= cp->max) {
bool success = para_pool_more(ppo);
if (!success) return 0;
cp = ppo->curr_pages;
}
assert(cp != 0);
assert(cp->nap + sizeof *rv < cp->max);
debug("cp->nap = %zi", cp->nap);
rv = (para_t *) cp + cp->nap;
assert((intptr_t)rv % __alignof__(*rv) == 0);
cp->nap = align(cp->nap + sizeof *rv, MAX_ALIGN, true);
*/
rv = malloc(sizeof *rv);
if (rv == 0) return 0;
para_init(ppa, rv);
return rv;
}
#endif /* PARA_POOL_H */
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