Changeset 46223 in vbox for trunk/src/VBox/Runtime/r0drv/nt

Timestamp:

May 22, 2013 5:18:47 PM (12 years ago)

Author:

vboxsync

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

85951

Message:

Must use same time source in user and kernel land otherwise we might get huge deltas between GIP time and system time.

File:

• trunk/src/VBox/Runtime/r0drv/nt/time-r0drv-nt.cpp (modified) (2 diffs)

trunk/src/VBox/Runtime/r0drv/nt/time-r0drv-nt.cpp

@@ -36 +36 @@
 DECLINLINE(uint64_t) rtTimeGetSystemNanoTS(void)
 {
-#ifndef IPRT_TARGET_NT4
+    /*
+     * Note! The time source we use here must be exactly the same as in
+     *       the ring-3 code!
+     */
+#if 0
+# ifndef IPRT_TARGET_NT4
     ULONGLONG InterruptTime = KeQueryInterruptTime();
     return (uint64_t)InterruptTime * 100; /* The value is in 100ns, convert to ns units. */
-#else
+# else
     LARGE_INTEGER InterruptTime;
     do
@@ -48 +53 @@
 
     return (uint64_t)InterruptTime.QuadPart * 100;
+# endif
+#else
+    LARGE_INTEGER Tick;
+    KeQueryTickCount(&Tick);
+    return (uint64_t)Tick.QuadPart * KeQueryTimeIncrement() * 100;
 #endif
 }