Merge branch 'mc++'

[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 0dfd027..08f9de2 100644 (file)
--- a/src/xbt/mmalloc/mm_module.c
+++ b/src/xbt/mmalloc/mm_module.c
@@ -20,6 +20,12 @@
    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>
@@ -317,7 +323,7 @@ void *mmalloc_preinit(void)
 {
   int res;
   if (__mmalloc_default_mdp == NULL) {
-    unsigned long mask = ~((unsigned long)getpagesize() - 1);
+    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);
     /* Fixme? only the default mdp in protected against forks */
@@ -339,9 +345,9 @@ void *mmalloc_preinit(void)
 
 void mmalloc_postexit(void)
 {
-  /* Do not detach the default mdp or ldl won't be able to free the memory it allocated since we're in memory */
-  //  mmalloc_detach(__mmalloc_default_mdp);
-  xbt_mheap_destroy_no_free(__mmalloc_default_mdp);
+  /* Do not destroy the default mdp or ldl won't be able to free the memory it
+   * allocated since we're in memory */
+  // xbt_mheap_destroy_no_free(__mmalloc_default_mdp);
 }
 
 size_t mmalloc_get_bytes_used(xbt_mheap_t heap){
@@ -365,3 +371,16 @@ size_t mmalloc_get_bytes_used(xbt_mheap_t heap){
   return bytes;
 }
 
+ssize_t mmalloc_get_busy_size(xbt_mheap_t heap, void *ptr){
+
+  ssize_t block = ((char*)ptr - (char*)(heap->heapbase)) / BLOCKSIZE + 1;
+  if(heap->heapinfo[block].type == -1)
+    return -1;
+  else if(heap->heapinfo[block].type == 0)
+    return heap->heapinfo[block].busy_block.busy_size;
+  else{
+    ssize_t frag = ((uintptr_t) (ADDR2UINT (ptr) % (BLOCKSIZE))) >> heap->heapinfo[block].type;
+    return heap->heapinfo[block].busy_frag.frag_size[frag];
+  }
+    
+}