1 files changed, 58 insertions, 0 deletions
diff --git a/cpukit/score/src/heapsizeofuserarea.c b/cpukit/score/src/heapsizeofuserarea.c
new file mode 100644
index 0000000000..0a8b150811
--- /dev/null
+++ b/cpukit/score/src/heapsizeofuserarea.c
@@ -0,0 +1,58 @@
+/**
+ * @file
+ *
+ * @ingroup ScoreHeap
+ *
+ * @brief Heap Handler implementation.
+ */
+
+/*
+ *  COPYRIGHT (c) 1989-1999.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems/system.h>
+#include <rtems/score/sysstate.h>
+#include <rtems/score/heap.h>
+
+bool _Heap_Size_of_alloc_area(
+  Heap_Control *heap,
+  void *alloc_begin_ptr,
+  uintptr_t *alloc_size
+)
+{
+  uintptr_t const page_size = heap->page_size;
+  uintptr_t const alloc_begin = (uintptr_t) alloc_begin_ptr;
+  Heap_Block *block = _Heap_Block_of_alloc_area( alloc_begin, page_size );
+  Heap_Block *next_block = NULL;
+  uintptr_t block_size = 0;
+
+  if ( !_Heap_Is_block_in_heap( heap, block ) ) {
+    return false;
+  }
+
+  block_size = _Heap_Block_size( block );
+  next_block = _Heap_Block_at( block, block_size );
+
+  if (
+    !_Heap_Is_block_in_heap( heap, next_block )
+      || !_Heap_Is_prev_used( next_block )
+  ) {
+    return false;
+  }
+
+  *alloc_size = (uintptr_t) next_block + HEAP_ALLOC_BONUS - alloc_begin;
+
+  return true;
+}
+