cairo-freelist-private.h [plain text]
#ifndef CAIRO_FREELIST_H
#define CAIRO_FREELIST_H
#include "cairo-types-private.h"
#include "cairo-compiler-private.h"
#include "cairo-freelist-type-private.h"
#ifndef VG
#define VG(x)
#endif
#ifndef NULL
#define NULL (void *) 0
#endif
cairo_private void
_cairo_freelist_init (cairo_freelist_t *freelist, unsigned nodesize);
cairo_private void
_cairo_freelist_fini (cairo_freelist_t *freelist);
cairo_private void *
_cairo_freelist_alloc (cairo_freelist_t *freelist);
cairo_private void *
_cairo_freelist_calloc (cairo_freelist_t *freelist);
cairo_private void
_cairo_freelist_free (cairo_freelist_t *freelist, void *node);
cairo_private void
_cairo_freepool_init (cairo_freepool_t *freepool, unsigned nodesize);
cairo_private void
_cairo_freepool_fini (cairo_freepool_t *freepool);
static inline void
_cairo_freepool_reset (cairo_freepool_t *freepool)
{
while (freepool->pools != &freepool->embedded_pool) {
cairo_freelist_pool_t *pool = freepool->pools;
freepool->pools = pool->next;
pool->next = freepool->freepools;
freepool->freepools = pool;
}
freepool->embedded_pool.rem = sizeof (freepool->embedded_data);
freepool->embedded_pool.data = freepool->embedded_data;
}
cairo_private void *
_cairo_freepool_alloc_from_new_pool (cairo_freepool_t *freepool);
static inline void *
_cairo_freepool_alloc_from_pool (cairo_freepool_t *freepool)
{
cairo_freelist_pool_t *pool;
uint8_t *ptr;
pool = freepool->pools;
if (unlikely (freepool->nodesize > pool->rem))
return _cairo_freepool_alloc_from_new_pool (freepool);
ptr = pool->data;
pool->data += freepool->nodesize;
pool->rem -= freepool->nodesize;
VG (VALGRIND_MAKE_MEM_UNDEFINED (ptr, freepool->nodesize));
return ptr;
}
static inline void *
_cairo_freepool_alloc (cairo_freepool_t *freepool)
{
cairo_freelist_node_t *node;
node = freepool->first_free_node;
if (unlikely (node == NULL))
return _cairo_freepool_alloc_from_pool (freepool);
VG (VALGRIND_MAKE_MEM_DEFINED (node, sizeof (node->next)));
freepool->first_free_node = node->next;
VG (VALGRIND_MAKE_MEM_UNDEFINED (node, freepool->nodesize));
return node;
}
cairo_private cairo_status_t
_cairo_freepool_alloc_array (cairo_freepool_t *freepool,
int count,
void **array);
static inline void
_cairo_freepool_free (cairo_freepool_t *freepool, void *ptr)
{
cairo_freelist_node_t *node = ptr;
node->next = freepool->first_free_node;
freepool->first_free_node = node;
VG (VALGRIND_MAKE_MEM_NOACCESS (node, freepool->nodesize));
}
#endif