Alexandre Julliard : ntdll: Use the user shared data to implement RtlQueryUnbiasedInterruptTime().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 9b12068c6c8ba656e8ca768227b1a970877d4730
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=9b12068c6c8ba656e8ca76822...

Author: Alexandre Julliard 
Date:   Thu May 21 17:07:20 2020 +0200

ntdll: Use the user shared data to implement RtlQueryUnbiasedInterruptTime().

Signed-off-by: Alexandre Julliard

---

dlls/ntdll/tests/time.c |  2 --
 dlls/ntdll/time.c       | 13 ++++++++++++-
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/dlls/ntdll/tests/time.c b/dlls/ntdll/tests/time.c
index f50d4b4d70..1628af8df2 100644
--- a/dlls/ntdll/tests/time.c
+++ b/dlls/ntdll/tests/time.c
@@ -222,8 +222,6 @@ static void test_user_shared_data_time(void)
             pRtlQueryUnbiasedInterruptTime(&t3);
         } while(t3 < t1 && i++ < 1); /* allow for wrap, but only once */

-        /* FIXME: not always in order, but should be close */
-        todo_wine_if(t1 > t2 && t1 - t2 < 50 * TICKSPERMSEC)
         ok(t1 <= t2, "USD InterruptTime / RtlQueryUnbiasedInterruptTime are out of order %s %s\n",
            wine_dbgstr_longlong(t1), wine_dbgstr_longlong(t2));
         ok(t2 <= t3 || broken(t2 == t3 + 82410089070) /* w864 has some weird offset on testbot */,
diff --git a/dlls/ntdll/time.c b/dlls/ntdll/time.c
index 06854c020d..f900b55d83 100644
--- a/dlls/ntdll/time.c
+++ b/dlls/ntdll/time.c
@@ -47,6 +47,7 @@
 #define NONAMELESSUNION
 #include "windef.h"
 #include "winternl.h"
+#include "ddk/wdm.h"
 #include "wine/exception.h"
 #include "wine/debug.h"
 #include "ntdll_misc.h"
@@ -1128,11 +1129,21 @@ NTSTATUS WINAPI NtSetSystemTime(const LARGE_INTEGER *NewTime, LARGE_INTEGER *Old
  */
 BOOL WINAPI RtlQueryUnbiasedInterruptTime(ULONGLONG *time)
 {
+    ULONG high, low;
+
     if (!time)
     {
         RtlSetLastWin32ErrorAndNtStatusFromNtStatus( STATUS_INVALID_PARAMETER );
         return FALSE;
     }
-    *time = monotonic_counter();
+
+    do
+    {
+        high = user_shared_data->InterruptTime.High1Time;
+        low = user_shared_data->InterruptTime.LowPart;
+    }
+    while (high != user_shared_data->InterruptTime.High2Time);
+    /* FIXME: should probably subtract InterruptTimeBias */
+    *time = (ULONGLONG)high << 32 | low;
     return TRUE;
 }