Use appconfig.h instead of cfg/config.h.

[bertos.git] / mware / heap.c

diff --git a/mware/heap.c b/mware/heap.c
index 249081b593130921aa07995b8dceaf57d443a938..b1dbb72b6451c7d12f9513c88b4110a8325917d8 100755 (executable)
--- a/mware/heap.c
+++ b/mware/heap.c
@@ -3,7 +3,7 @@
  * <!--
  * 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.
+ * This file is part of DevLib - See README.devlib for information.
  * -->
  *
  * \brief Heap subsystem (public interface).
@@ -15,6 +15,15 @@
 
 /*#*
  *#* $Log$
+ *#* 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.
  *#*
@@ -31,8 +40,8 @@
 
 #include "heap.h"
 #include <string.h>           // memset()
-#include <macros.h>           // IS_POW2()
-#include <debug.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
@@ -201,11 +210,28 @@ void *heap_calloc(struct Heap* h, size_t size)
        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 */