From 0256fdf30b44395d9695a5306d8b1d5485e602db Mon Sep 17 00:00:00 2001
From: Alan Korr <alkorr@rockbox.org>
Date: Wed, 17 Apr 2002 12:20:41 +0000
Subject: cosmetic changes and additions : * now we have seperate private
 headers files   containing private and static or public functions   in
 memory-* files. * there is only one .c file of the same name the library.

Zagor: because now there is only one .c file, you could only have a .o file and use it instead of the .a libfile.

* most structures and codes are now private.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@113 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/test/memory/memory-block.h | 77 +++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 firmware/test/memory/memory-block.h

(limited to 'firmware/test/memory/memory-block.h')

diff --git a/firmware/test/memory/memory-block.h b/firmware/test/memory/memory-block.h
new file mode 100644
index 0000000000..2c29d255e2
--- /dev/null
+++ b/firmware/test/memory/memory-block.h
@@ -0,0 +1,77 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id:
+ *
+ * Copyright (C) 2002 by Alan Korr
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef __LIBRARY_MEMORY_C__
+#  error "This header file must be included ONLY from memory.c."
+#endif
+#ifndef __LIBRARY_MEMORY_BLOCK_H__
+#  define __LIBRARY_MEMORY_BLOCK_H__
+
+static struct memory_cache *free_block_cache[MEMORY_PAGE_MINIMAL_ORDER - 2];
+
+///////////////////////////////////////////////////////////////////////////////
+// MEMORY BLOCK :
+/////////////////
+//
+//  - memory_allocate_block : allocate a power-of-2-sized block (or a page)
+//  - memory_release_block : release a power-of-2-sized block (or a page)
+//
+
+static inline void *allocate_small_block (int order)
+  {
+    struct memory_cache *cache = free_block_cache[order - 2];
+    do
+      {
+        if (cache)
+          return memory_cache_allocate (cache);
+      }
+    while ((free_block_cache[order] = cache = memory_create_cache (size,0,0)));
+    return MEMORY_RETURN_FAILURE;
+  }
+
+void *memory_allocate_block (int order)
+  {
+    if (order < 2)
+      order = 2;
+    if (order < MEMORY_PAGE_MINIMAL_ORDER)
+      return allocate_small_block (order);
+    if (order < MEMORY_PAGE_MAXIMAL_ORDER)
+      return memory_allocate_page (order);
+    return MEMORY_RETURN_FAILURE;
+  }
+
+static inline int release_block (int order,void *address)
+  {
+    struct memory_cache *cache = free_block_cache[order - 2];
+    if (cache)
+      return memory_cache_release (cache,address);
+    return MEMORY_RETURN_FAILURE;
+  }
+
+int memory_release_block (int order,void *address)
+  {
+    if (order < 2)
+      order = 2;
+    if (order < MEMORY_PAGE_MINIMAL_ORDER)
+      return release_block (order);
+    if (order < MEMORY_PAGE_MAXIMAL_ORDER)
+      return memory_release_page (address);
+    return MEMORY_RETURN_FAILURE;
+  }
+
+#endif
-- 
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