mirror of
https://github.com/radareorg/radare2.git
synced 2024-12-05 03:56:46 +00:00
130 lines
3.2 KiB
C
130 lines
3.2 KiB
C
/* radare - LGPL - Copyright 2010-2011 pancake<nopcode.org> */
|
|
|
|
#include <r_util.h>
|
|
#include <stdlib.h>
|
|
|
|
#define ALLOC_POOL_SIZE 1024
|
|
#define ALLOC_POOL_COUNT 128
|
|
|
|
// TODO: add api to serialize/deserialize memory pools from/to disk
|
|
// This can be useful when the application is swapping (userland swapping?)
|
|
// Do user-swapping takes sense?
|
|
|
|
R_API RMemoryPool* r_mem_pool_deinit(RMemoryPool *pool) {
|
|
int i;
|
|
for (i=0; i<pool->npool; i++)
|
|
free (pool->nodes[i]);
|
|
free (pool->nodes);
|
|
pool->nodes = NULL;
|
|
return pool;
|
|
}
|
|
|
|
R_API RMemoryPool *r_mem_pool_new(int nodesize, int poolsize, int poolcount) {
|
|
RMemoryPool *mp = R_NEW (RMemoryPool);
|
|
if (mp) {
|
|
if (poolsize<1)
|
|
poolsize = ALLOC_POOL_SIZE;
|
|
if (poolcount<1)
|
|
poolcount = ALLOC_POOL_COUNT;
|
|
// TODO: assert nodesize?;
|
|
mp->poolsize = poolsize;
|
|
mp->poolcount = poolcount;
|
|
mp->nodesize = nodesize;
|
|
mp->npool = -1;
|
|
mp->ncount = mp->poolsize; // force init
|
|
mp->nodes = (ut8**) malloc (sizeof (void*) * mp->poolcount);
|
|
if (mp->nodes == NULL) {
|
|
R_FREE (mp);
|
|
return NULL;
|
|
}
|
|
}
|
|
return mp;
|
|
}
|
|
|
|
R_API RMemoryPool *r_mem_pool_free(RMemoryPool *pool) {
|
|
r_mem_pool_deinit (pool);
|
|
free (pool);
|
|
return NULL;
|
|
}
|
|
|
|
R_API void* r_mem_pool_alloc(RMemoryPool *pool) {
|
|
if (pool->ncount >= pool->poolsize) {
|
|
if (++pool->npool >= pool->poolcount) {
|
|
eprintf ("FAIL: Cannot allocate more memory in the pool\n");
|
|
return NULL;
|
|
}
|
|
pool->nodes[pool->npool] = malloc (pool->nodesize*pool->poolsize);
|
|
if (pool->nodes[pool->npool] == NULL)
|
|
return NULL;
|
|
pool->ncount = 0;
|
|
}
|
|
// TODO: fix warning
|
|
return (void *)(&(pool->nodes[pool->npool][pool->ncount++]));
|
|
}
|
|
|
|
// TODO: not implemented
|
|
R_API int r_mem_pool_dealloc(RMemoryPool *pool, void *p) {
|
|
return R_FALSE;
|
|
}
|
|
|
|
/* poolfactory */
|
|
/* TODO: must tune */
|
|
static RPoolFactory single_pf = {0};
|
|
|
|
R_API RPoolFactory *r_poolfactory_instance() {
|
|
return &single_pf;
|
|
}
|
|
|
|
R_API void r_poolfactory_init (int limit) {
|
|
int size = limit * sizeof (RMemoryPool*);
|
|
single_pf.limit = limit+1;
|
|
free (single_pf.pools);
|
|
single_pf.pools = malloc (size);
|
|
memset (single_pf.pools, 0, size);
|
|
}
|
|
|
|
R_API RPoolFactory* r_poolfactory_new(int limit) {
|
|
if (limit>0) {
|
|
int size = sizeof (RMemoryPool*) * limit;
|
|
RPoolFactory *pf = R_NEW0 (RPoolFactory);
|
|
if (!pf) return NULL;
|
|
pf->limit = limit+1;
|
|
pf->pools = malloc (size);
|
|
memset (pf->pools, 0, size);
|
|
return pf;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
R_API void *r_poolfactory_alloc(RPoolFactory *pf, int nodesize) {
|
|
if (nodesize > pf->limit)
|
|
return NULL;
|
|
if (!pf->pools[nodesize])
|
|
pf->pools[nodesize] = r_mem_pool_new (nodesize,
|
|
ALLOC_POOL_SIZE, ALLOC_POOL_COUNT);
|
|
return r_mem_pool_alloc (pf->pools[nodesize]);
|
|
}
|
|
|
|
// TODO: not implemented
|
|
R_API int r_poolfactory_dealloc(RPoolFactory *pool, void *p) {
|
|
return R_FALSE;
|
|
}
|
|
// TODO: add support for ranged limits, from-to
|
|
R_API void r_poolfactory_stats(RPoolFactory *pf) {
|
|
int i=0;
|
|
eprintf ("RPoolFactory stats:\n");
|
|
eprintf (" limits: %d\n", pf->limit);
|
|
for (i=0; i<pf->limit; i++) {
|
|
if (pf->pools[i])
|
|
eprintf (" size: %d\t npool: %d\t count: %d\n",
|
|
pf->pools[i]->nodesize,
|
|
pf->pools[i]->npool,
|
|
pf->pools[i]->ncount);
|
|
}
|
|
}
|
|
|
|
R_API void r_poolfactory_free(RPoolFactory *pf) {
|
|
free (pf->pools);
|
|
free (pf);
|
|
}
|