Unify the two freed object pools

Discard some duplicate code and shared a single freed object pointer
pool between the pattern and clip.

1 files changed, 91 insertions, 0 deletions

diff --git a/src/cairo-freed-pool.c b/src/cairo-freed-pool.c
new file mode 100644
index 000000000..e225db447
--- /dev/null
+++ b/src/cairo-freed-pool.c
@@ -0,0 +1,91 @@
+/* -*- 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 = ARRAY_LENGTH (pool->pool);
+    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;
+    }
+}
+
+#endif