# HG changeset patch
# User Merten Sach <msach@mailbox.tu-berlin.de>
# Date 1315398802 -7200
# Node ID d0aa5a796fc515422832122d3f172b8648a0f332
# Parent  9b2b9bc2c362bf0019f3ba6a4842b6f38505e7cf
touch memory at start of algorithm to make it comparable

diff -r 9b2b9bc2c362 -r d0aa5a796fc5 vmalloc.c
--- a/vmalloc.c	Wed Sep 07 14:28:20 2011 +0200
+++ b/vmalloc.c	Wed Sep 07 14:33:22 2011 +0200
@@ -342,6 +342,14 @@
    if( firstChunk == NULL ) {printf("Can't allocate initial memory\n"); exit(1);}
    freeLists->memSpace = firstChunk;
    
+   //Touch memory to avoid page faults
+   void *ptr,*endPtr; 
+   endPtr = (void*)firstChunk+MALLOC_ADDITIONAL_MEM_FROM_OS_SIZE;
+   for(ptr = firstChunk; ptr < endPtr; ptr+=PAGE_SIZE)
+   {
+       *(char*)ptr = 0;
+   }
+   
    firstChunk->nextLowerInMem = NULL;
    firstChunk->nextHigherInMem = (MallocProlog*)((uintptr_t)firstChunk +
                         MALLOC_ADDITIONAL_MEM_FROM_OS_SIZE - sizeof(MallocProlog*));