/* cairo - a vector graphics library with display and print output

 *

 * Copyright © 2009 Chris Wilson

 *

 * This library is free software; you can redistribute it and/or

 * modify it either under the terms of the GNU Lesser General Public

 * License version 2.1 as published by the Free Software Foundation

 * (the "LGPL") or, at your option, under the terms of the Mozilla

 * Public License Version 1.1 (the "MPL"). If you do not alter this

 * notice, a recipient may use your version of this file under either

 * the MPL or the LGPL.

 *

 * You should have received a copy of the LGPL along with this library

 * in the file COPYING-LGPL-2.1; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA

 * You should have received a copy of the MPL along with this library

 * in the file COPYING-MPL-1.1

 *

 * The contents of this file are subject to the Mozilla Public License

 * Version 1.1 (the "License"); you may not use this file except in

 * compliance with the License. You may obtain a copy of the License at

 * http://www.mozilla.org/MPL/

 *

 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY

 * OF ANY KIND, either express or implied. See the LGPL or the MPL for

 * the specific language governing rights and limitations.

 *

 * The Original Code is the cairo graphics library.

 *

 * The Initial Developer of the Original Code is University of Southern

 * California.

 *

 * Contributor(s):

 *	Chris Wilson <chris@chris-wilson.co.uk>

 */

#ifndef CAIRO_FREED_POOL_H

#define CAIRO_FREED_POOL_H

#include "cairoint.h"

#include "cairo-atomic-private.h"

CAIRO_BEGIN_DECLS

#define DISABLE_FREED_POOLS 0

#if HAS_ATOMIC_OPS && ! DISABLE_FREED_POOLS

/* Keep a stash of recently freed clip_paths, since we need to

 * reallocate them frequently.

 */

#define MAX_FREED_POOL_SIZE 16

typedef struct {

    cairo_atomic_intptr_t pool[MAX_FREED_POOL_SIZE];

    cairo_atomic_int_t top;

} freed_pool_t;

static cairo_always_inline void *

_atomic_fetch (cairo_atomic_intptr_t *slot)

{

    void *ptr;

    do {

}

static cairo_always_inline cairo_bool_t

_atomic_store (cairo_atomic_intptr_t *slot, void *ptr)

{

}

cairo_private void *

_freed_pool_get_search (freed_pool_t *pool);

static inline void *

{

    void *ptr;

    int i;

    }

    /* either empty or contended */

}

cairo_private void

_freed_pool_put_search (freed_pool_t *pool, void *ptr);

static inline void

{

    int i;

		_atomic_store (&pool->pool[i], ptr)))

    {

    }

    /* either full or contended */

}

cairo_private void

_freed_pool_reset (freed_pool_t *pool);

#define HAS_FREED_POOL 1

#else

/* A warning about an unused freed-pool in a build without atomics

 * enabled usually indicates a missing _freed_pool_reset() in the

 * static reset function */

typedef int freed_pool_t;

#define _freed_pool_get(pool) NULL

#define _freed_pool_put(pool, ptr) free(ptr)

#define _freed_pool_reset(ptr)

#endif

CAIRO_END_DECLS

#endif /* CAIRO_FREED_POOL_PRIVATE_H */