Changeset 1f7631 in git for factory

Timestamp:

Feb 2, 2004, 7:04:09 PM (20 years ago)

Author:

Hans Schönemann <hannes@…>

Branches:

(u'spielwiese', 'fe61d9c35bf7c61f2b6cbf1b56e25e2f08d536cc')

Children:

3a3666b959755cfa3e07e4e9d4353daa1bb4e0b6

Parents:

199b5cfd4b7ad03ef1d72b233900e94dbc4ef769

Message:

*hannes:/grayson: reallocBlock improved


git-svn-id: file:///usr/local/Singular/svn/trunk@7019 2c84dea3-7e68-4137-9b89-c4e89433aadc

File:

• factory/memutil.c (modified) (2 diffs)

factory/memutil.c

@@ -1 +1 @@
 /* emacs edit mode for this file is -*- C -*- */
-/* $Id: memutil.c,v 1.3 1997-06-19 12:22:18 schmidt Exp $ */
+/* $Id: memutil.c,v 1.4 2004-02-02 18:04:09 Singular Exp $ */
 
 #define _POSIX_SOURCE 1
@@ -89 +89 @@
 void* reallocBlock ( void* block, size_t oldsize, size_t newsize )
 {
-    void* dummy = getBlock( newsize );
-    memcpy( dummy, block, (newsize < oldsize) ? newsize : oldsize );
-    freeBlock( block, oldsize );
-    return dummy;
+#if 1
+  char* dum = (char*)block - 4;
+  int size = *((int*)dum);
+  if (newsize <= size) return block;
+#endif
+  void* dummy = getBlock( newsize );
+  memcpy( dummy, block, newsize < oldsize ? newsize : oldsize );
+  freeBlock( block, oldsize );
+  return dummy;
 }