Changeset 29543 in vbox for trunk/src/VBox/Additions/common

Timestamp:

May 17, 2010 2:01:31 PM (15 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

61684

Message:

VBoxService: fixed madvise() test for Linux guests

File:

• trunk/src/VBox/Additions/common/VBoxService/VBoxServiceBalloon.cpp (modified) (1 diff)

trunk/src/VBox/Additions/common/VBoxService/VBoxServiceBalloon.cpp

@@ -63 +63 @@
 {
 #ifdef RT_OS_LINUX
-    void *pv = RTMemPageAlloc(PAGE_SIZE);
-    g_fSysMadviseWorks = madvise(pv, PAGE_SIZE, MADV_DONTFORK) == 0;
-    RTMemPageFree(pv, PAGE_SIZE);
+    void *pv = (void*)mmap(NULL, PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+    if (pv != MAP_FAILED)
+    {
+        g_fSysMadviseWorks = madvise(pv, PAGE_SIZE, MADV_DONTFORK) == 0;
+        munmap(pv, PAGE_SIZE);
+    }
 #endif
 }