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/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
/* 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
*
* 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>
*/
#include "cairoint.h"
#include "cairo-freed-pool-private.h"
#if HAS_FREED_POOL
void *
_freed_pool_get_search (freed_pool_t *pool)
{
void *ptr;
int i;
for (i = ARRAY_LENGTH (pool->pool); i--;) {
ptr = _atomic_fetch (&pool->pool[i]);
if (ptr != NULL) {
_cairo_atomic_int_set_relaxed (&pool->top, i);
return ptr;
}
}
/* empty */
_cairo_atomic_int_set_relaxed (&pool->top, 0);
return NULL;
}
void
_freed_pool_put_search (freed_pool_t *pool, void *ptr)
{
int i;
for (i = 0; i < ARRAY_LENGTH (pool->pool); i++) {
if (_atomic_store (&pool->pool[i], ptr)) {
_cairo_atomic_int_set_relaxed (&pool->top, i + 1);
return;
}
}
/* full */
_cairo_atomic_int_set_relaxed (&pool->top, i);
free (ptr);
}
void
_freed_pool_reset (freed_pool_t *pool)
{
int i;
for (i = 0; i < ARRAY_LENGTH (pool->pool); i++) {
free (pool->pool[i]);
pool->pool[i] = NULL;
}
_cairo_atomic_int_set_relaxed (&pool->top, 0);
}
#endif