| /* -*- 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 |
| * 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> |
| */ |
| |
| #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) { |
| pool->top = i; |
| return ptr; |
| } |
| } |
| |
| /* empty */ |
| 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)) { |
| pool->top = i + 1; |
| return; |
| } |
| } |
| |
| /* full */ |
| 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; |
| } |
| |
| pool->top = 0; |
| } |
| |
| #endif |