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/*
* BIRD Resource Manager
*
* (c) 1998--1999 Martin Mares <mj@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#ifndef _BIRD_RESOURCE_H_
#define _BIRD_RESOURCE_H_
#include "lib/lists.h"
/* Resource */
typedef struct resource {
node n; /* Inside resource pool */
struct resclass *class; /* Resource class */
} resource;
/* Resource class */
struct resclass {
char *name; /* Resource class name */
unsigned size; /* Standard size of single resource */
void (*free)(resource *); /* Freeing function */
void (*dump)(resource *); /* Dump to debug output */
resource *(*lookup)(resource *, unsigned long); /* Look up address (only for debugging) */
size_t (*memsize)(resource *); /* Return size of memory used by the resource, may be NULL */
};
/* Estimate of system allocator overhead per item, for memory consumtion stats */
#define ALLOC_OVERHEAD 8
/* Generic resource manipulation */
typedef struct pool pool;
void resource_init(void);
pool *rp_new(pool *, const char *); /* Create new pool */
void rfree(void *); /* Free single resource */
void rdump(void *); /* Dump to debug output */
size_t rmemsize(void *res); /* Return size of memory used by the resource */
void rlookup(unsigned long); /* Look up address (only for debugging) */
void rmove(void *, pool *); /* Move to a different pool */
void *ralloc(pool *, struct resclass *);
extern pool root_pool;
/* Normal memory blocks */
void *mb_alloc(pool *, unsigned size);
void *mb_allocz(pool *, unsigned size);
void *mb_realloc(void *m, unsigned size);
void mb_free(void *);
/* Memory pools with linear allocation */
typedef struct linpool linpool;
linpool *lp_new(pool *, unsigned blk);
void *lp_alloc(linpool *, unsigned size); /* Aligned */
void *lp_allocu(linpool *, unsigned size); /* Unaligned */
void *lp_allocz(linpool *, unsigned size); /* With clear */
void lp_flush(linpool *); /* Free everything, but leave linpool */
/* Slabs */
typedef struct slab slab;
slab *sl_new(pool *, unsigned size);
void *sl_alloc(slab *);
void sl_free(slab *, void *);
/*
* Low-level memory allocation functions, please don't use
* outside resource manager and possibly sysdep code.
*/
void buffer_realloc(void **buf, unsigned *size, unsigned need, unsigned item_size);
#ifdef HAVE_LIBDMALLOC
/*
* The standard dmalloc macros tend to produce lots of namespace
* conflicts and we use only xmalloc, xrealloc and xfree, so we
* can define the stubs ourselves.
*/
#define DMALLOC_DISABLE
#include <dmalloc.h>
#define xmalloc(size) _xmalloc_leap(__FILE__, __LINE__, size)
#define xrealloc(size) _xrealloc_leap(__FILE__, __LINE__, size)
#define xfree(ptr) _xfree_leap(__FILE__, __LINE__, ptr)
#else
/*
* Unfortunately, several libraries we might want to link to define
* their own xmalloc and we don't want to interfere with them, hence
* the renaming.
*/
#define xmalloc bird_xmalloc
#define xrealloc bird_xrealloc
void *xmalloc(unsigned);
void *xrealloc(void *, unsigned);
#define xfree(x) free(x)
#endif
#endif
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