[mc] Avoid memsetting twice

[simgrid.git] / src / xbt / mmalloc / mm_module.c

diff --git a/src/xbt/mmalloc/mm_module.c b/src/xbt/mmalloc/mm_module.c
index 08f9de2..4839cfe 100644 (file)
--- a/src/xbt/mmalloc/mm_module.c
+++ b/src/xbt/mmalloc/mm_module.c
@@ -1,5 +1,12 @@
-/* Initialization for access to a mmap'd malloc managed region.
-   Copyright 1992, 2000 Free Software Foundation, Inc.
+/* Initialization for access to a mmap'd malloc managed region. */
+
+/* Copyright (c) 2012-2014. The SimGrid Team.
+ * All rights reserved.                                                     */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+/* Copyright 1992, 2000 Free Software Foundation, Inc.
 
    Contributed by Fred Fish at Cygnus Support.   fnf@cygnus.com
 
@@ -20,12 +27,6 @@
    not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-/* Copyright (c) 2012-2014. The SimGrid Team.
- * All rights reserved.                                                     */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
 #include <sys/types.h>
 #include <fcntl.h>              /* After sys/types.h, at least for dpx/2.  */
 #include <sys/stat.h>
@@ -71,6 +72,11 @@
    On failure returns NULL. */
 
 xbt_mheap_t xbt_mheap_new(int fd, void *baseaddr)
+{
+  return xbt_mheap_new_options(fd, baseaddr, 0);
+}
+
+xbt_mheap_t xbt_mheap_new_options(int fd, void *baseaddr, int options)
 {
   struct mdesc mtemp;
   xbt_mheap_t mdp;
@@ -168,6 +174,7 @@ xbt_mheap_t xbt_mheap_new(int fd, void *baseaddr)
   mdp->base = mdp->breakval = mdp->top = baseaddr;
   mdp->next_mdesc = NULL;
   mdp->refcount = 1;
+  mdp->options = options;
   
   /* If we have not been passed a valid open file descriptor for the file
      to map to, then we go for an anonymous map */
@@ -325,7 +332,7 @@ void *mmalloc_preinit(void)
   if (__mmalloc_default_mdp == NULL) {
     unsigned long mask = ~((unsigned long)xbt_pagesize - 1);
     void *addr = (void*)(((unsigned long)sbrk(0) + HEAP_OFFSET) & mask);
-    __mmalloc_default_mdp = xbt_mheap_new(-1, addr);
+    __mmalloc_default_mdp = xbt_mheap_new_options(-1, addr, XBT_MHEAP_OPTION_MEMSET);
     /* Fixme? only the default mdp in protected against forks */
     // This is mandated to protect the mmalloced areas through forks. Think of tesh.
     // Nah, removing the mutex isn't a good idea either for tesh