-/*!
+/**
* \file
* <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction. Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License. This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
* Copyright 2004 Develer S.r.l. (http://www.develer.com/)
* Copyright 1999,2000,2001 Bernardo Innocenti <bernie@develer.com>
- * This file is part of DevLib - See devlib/README for information.
+ *
* -->
*
* \brief Heap subsystem (public interface).
* \author Bernardo Innocenti <bernie@develer.com>
*/
-/*
- * $Log$
- * Revision 1.2 2004/08/04 15:54:18 rasky
- * Merge da SC: prima versione veramente funzionante
- *
- * Revision 1.1 2004/07/31 16:33:58 rasky
- * Spostato lo heap da kern/ a mware/
- *
- * Revision 1.2 2004/06/03 11:27:09 bernie
- * Add dual-license information.
- *
- * Revision 1.1 2004/05/23 17:27:00 bernie
- * Import kern/ subdirectory.
- *
- */
+/*#*
+ *#* $Log$
+ *#* Revision 1.9 2006/07/19 12:56:27 bernie
+ *#* Convert to new Doxygen style.
+ *#*
+ *#* Revision 1.8 2005/11/04 16:20:02 bernie
+ *#* Fix reference to README.devlib in header.
+ *#*
+ *#* Revision 1.7 2005/04/11 19:10:28 bernie
+ *#* Include top-level headers from cfg/ subdir.
+ *#*
+ *#* Revision 1.6 2004/10/26 09:02:13 bernie
+ *#* heap_free(): Handle NULL pointers like free(), write documentation.
+ *#*
+ *#* Revision 1.5 2004/10/03 20:43:22 bernie
+ *#* Import changes from sc/firmware.
+ *#*
+ *#* Revision 1.1 2004/07/31 16:33:58 rasky
+ *#* Spostato lo heap da kern/ a mware/
+ *#*
+ *#* Revision 1.2 2004/06/03 11:27:09 bernie
+ *#* Add dual-license information.
+ *#*
+ *#* Revision 1.1 2004/05/23 17:27:00 bernie
+ *#* Import kern/ subdirectory.
+ *#*
+ *#*/
#include "heap.h"
#include <string.h> // memset()
-#include <drv/kdebug.h> // ASSERT()
+#include <cfg/macros.h> // IS_POW2()
+#include <cfg/debug.h> // ASSERT()
/* NOTE: struct size must be a 2's power! */
typedef struct _MemChunk
return mem;
}
-void heap_free(struct Heap* h, void *mem_)
+/**
+ * Free a block of memory, determining its size automatically.
+ *
+ * \param h Heap from which the block was allocated.
+ * \param mem Pointer to a block of memory previously allocated with
+ * either heap_malloc() or heap_calloc().
+ *
+ * \note If \a mem is a NULL pointer, no operation is performed.
+ *
+ * \note Freeing the same memory block twice has undefined behavior.
+ *
+ * \note This function works like the ANSI C free().
+ */
+void heap_free(struct Heap *h, void *mem)
{
- size_t* mem = (size_t*)mem_;
- --mem;
- heap_freemem(h, mem, *mem);
+ size_t *_mem = (size_t *)mem;
+
+ if (_mem)
+ {
+ --_mem;
+ heap_freemem(h, _mem, *_mem);
+ }
}
#endif /* CONFIG_HEAP_MALLOC */