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/* Fast memory allocator.
Copyright (C) 2003, 2007, 2008 Free Software Foundation, Inc.
Written by Neal H Walfield.
This file is part of the GNU Hurd.
The GNU Hurd 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 3 of the
License, or (at your option) any later version.
The GNU Hurd 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, see
<http://www.gnu.org/licenses/>. */
#ifndef __ZALLOC_H__
#define __ZALLOC_H__
#include <stdint.h>
#include <hurd/stddef.h>
/* The amount of memory available (in PAGESIZE units). */
extern uintptr_t zalloc_memory;
/* Add to the pool the block BLOCK of size SIZE. BLOCK must be
aligned to the system's minimum page size. SIZE must be a multiple
of the system's minimum page size. */
void zfree (uintptr_t block, uintptr_t size);
/* Allocate a block of memory of size SIZE. SIZE must be a multiple
of the system's minimum page size. */
uintptr_t zalloc_internal (uintptr_t size);
static inline uintptr_t
zalloc (uintptr_t size)
{
if (size / PAGESIZE > zalloc_memory)
return 0;
return zalloc_internal (size);
}
/* Dump some internal data structures. Only defined if zalloc was
compiled without NDEBUG defined. */
void zalloc_dump_zones (const char *prefix);
#endif /* __ZALLOC_H__ */
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