Copy the wind river 0329 build libwsbm code to here.

Change-Id: Ic4cbcec2de408bc7525314da8da21d5f8284c83e

1 files changed, 75 insertions, 0 deletions

diff --git a/src/wsbm_mm.h b/src/wsbm_mm.h
new file mode 100644
index 0000000..d3bbe94
--- /dev/null
+++ b/src/wsbm_mm.h
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+/**************************************************************************
+ *
+ * Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX., USA.
+ * All Rights Reserved.
+ * Copyright 2009 VMware, Inc., Palo Alto, CA., USA.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+/*
+ * Generic simple memory manager implementation. Intended to be used as a base
+ * class implementation for more advanced memory managers.
+ *
+ * Note that the algorithm used is quite simple and there might be substantial
+ * performance gains if a smarter free list is implemented. Currently it is just an
+ * unordered stack of free regions. This could easily be improved if an RB-tree
+ * is used instead. At least if we expect heavy fragmentation.
+ *
+ * Authors:
+ * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
+ */
+
+#ifndef _WSBM_MM_H_
+#define _WSBM_MM_H_
+
+#include "wsbm_util.h"
+struct _WsbmMM
+{
+    struct _WsbmListHead fl_entry;
+    struct _WsbmListHead ml_entry;
+};
+
+struct _WsbmMMNode
+{
+    struct _WsbmListHead fl_entry;
+    struct _WsbmListHead ml_entry;
+    int free;
+    unsigned long start;
+    unsigned long size;
+    struct _WsbmMM *mm;
+};
+
+extern struct _WsbmMMNode *wsbmMMSearchFree(const struct _WsbmMM *mm,
+					    unsigned long size,
+					    unsigned alignment,
+					    int best_match);
+extern struct _WsbmMMNode *wsbmMMGetBlock(struct _WsbmMMNode *parent,
+					  unsigned long size,
+					  unsigned alignment);
+extern void wsbmMMPutBlock(struct _WsbmMMNode *cur);
+extern void wsbmMMtakedown(struct _WsbmMM *mm);
+extern int wsbmMMinit(struct _WsbmMM *mm, unsigned long start,
+		      unsigned long size);
+extern int wsbmMMclean(struct _WsbmMM *mm);
+#endif