- Added another function called __reset_max_mem_stats() which will reset the

counters for "maximum amount of memory used" and "maximum number of chunks
  allocated" to the current figures for these values.

- Fixed the alloca() declaration in <stdlib.h> so that software which keys
  off the fact whether or not the alloca preprocessor symbol is defined
  will do the right thing.

- Added an optional call-back function which can be called if alloca()
  is about to return NULL, which some software does not consider.
  Rather than letting such software drop into an illegal memory access
  or worse, that call-back function will be invoked instead, which can
  print an error message and eventually call abort().


git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@15073 87f5fb63-7c3d-0410-a384-fd976d0f7a62

library/stdlib_getmemstats.c

@@ -0,0 +1,58 @@
+/*
+ * $Id: stdlib_getmemstats.c,v 1.1 2005-11-28 09:53:51 obarthel Exp $
+ *
+ * :ts=4
+ *
+ * Portable ISO 'C' (1994) runtime library for the Amiga computer
+ * Copyright (c) 2002-2005 by Olaf Barthel <olsen@sourcery.han.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   - Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *
+ *   - Neither the name of Olaf Barthel nor the names of contributors
+ *     may be used to endorse or promote products derived from this
+ *     software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _STDLIB_HEADERS_H
+#include "stdlib_headers.h"
+#endif /* _STDLIB_HEADERS_H */
+
+/****************************************************************************/
+
+void
+__get_mem_stats(size_t * current_memory,size_t * max_memory,size_t * current_chunks,size_t * max_chunks)
+{
+	__memory_lock();
+
+	if(current_memory != NULL)
+		(*current_memory) = __current_memory_allocated;
+
+	if(max_memory != NULL)
+		(*max_memory) = __maximum_memory_allocated;
+
+	if(current_chunks != NULL)
+		(*current_chunks) = __current_num_memory_chunks_allocated;
+
+	if(max_chunks != NULL)
+		(*max_chunks) = __maximum_num_memory_chunks_allocated;
+
+	__memory_unlock();
+}