First try.

src/server/isc-malloc.c

+/*
+ * $Id: isc-malloc.c,v 1.1 1992/04/15 22:45:57 ceder Exp $
+ * Copyright (C) 1991  Lysator Academic Computer Association.
+ *
+ * This file is part of the LysKOM server.
+ * 
+ * LysKOM 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 1, or (at your option) 
+ * any later version.
+ * 
+ * LysKOM 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 LysKOM; see the file COPYING.  If not, write to
+ * Lysator, c/o ISY, Linkoping University, S-581 83 Linkoping, SWEDEN,
+ * or the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, 
+ * MA 02139, USA.
+ *
+ * Please mail bug reports to bug-lyskom@lysator.liu.se. 
+ */
+/*
+ * Malloc wrappers for the isc package.
+ *
+ * These functions call smalloc and also counts
+ * how many allocated blocks there are.
+ */
+
+static char *rcsid = "$Id: isc-malloc.c,v 1.1 1992/04/15 22:45:57 ceder Exp $";
+
+
+#include <stdio.h>
+#include <stddef.h>
+#include <server/smalloc.h>
+#include "log.h"
+#include "exp.h"
+#include "isc-malloc.h"
+
+static int no_of_allocated_blocks = 0;
+
+EXPORT  void *
+isc_malloc_wrapper(size_t size)
+{
+   ++no_of_allocated_blocks;
+   return smalloc (size);
+}
+
+
+EXPORT  void
+isc_free_wrapper(void * ptr)
+{
+    --no_of_allocated_blocks;
+    sfree(ptr);
+}
+
+EXPORT  void *
+isc_realloc_wrapper (void * ptr,
+		     size_t size)
+{
+    if ( ptr == NULL )
+	return isc_malloc_wrapper (size);
+
+    return srealloc (ptr, size);
+}
+
+
+EXPORT void
+dump_isc_alloc_counts(FILE *stat_file)
+{
+    fprintf(stat_file, "---" __FILE__ ":\n"
+	    "\tAllocated blocks by isc: %d\n",
+	    no_of_allocated_blocks);
+}

src/server/isc-malloc.h

+/*
+ * $Id: isc-malloc.h,v 1.1 1992/04/15 22:45:54 ceder Exp $
+ * Copyright (C) 1991  Lysator Academic Computer Association.
+ *
+ * This file is part of the LysKOM server.
+ * 
+ * LysKOM 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 1, or (at your option) 
+ * any later version.
+ * 
+ * LysKOM 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 LysKOM; see the file COPYING.  If not, write to
+ * Lysator, c/o ISY, Linkoping University, S-581 83 Linkoping, SWEDEN,
+ * or the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, 
+ * MA 02139, USA.
+ *
+ * Please mail bug reports to bug-lyskom@lysator.liu.se. 
+ */
+/*
+ * $Id: isc-malloc.h,v 1.1 1992/04/15 22:45:54 ceder Exp $
+ *
+ * Malloc wrappers for the string package.
+ *
+ * These functions call smalloc and also counts
+ * how many allocated strings there are.
+ */
+
+extern  void *
+isc_malloc_wrapper (size_t size);
+
+
+extern  void
+isc_free_wrapper (void * ptr);
+
+extern  void *
+isc_realloc_wrapper (void * ptr,
+		     size_t size);
+
+extern void
+dump_isc_alloc_counts(FILE *stat_file);