Changeset 4230 in vbox for trunk/src/VBox/Runtime/r0drv/nt

Timestamp:

Aug 19, 2007 4:56:05 PM (17 years ago)

Author:

vboxsync

Message:

Ported time-r0drv to NT.

File:

• trunk/src/VBox/Runtime/r0drv/nt/time-r0drv-nt.cpp (copied) (copied from trunk/src/VBox/Runtime/r0drv/darwin/time-r0drv-darwin.cpp ) (6 diffs)

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

@@ -1 +1 @@
 /* $Id$ */
 /** @file
- * innotek Portable Runtime - Time, Ring-0 Driver, Darwin.
+ * innotek Portable Runtime - Time, Ring-0 Driver, Nt.
  */
 
 /*
- * Copyright (C) 2006-2007 innotek GmbH
+ * Copyright (C) 2007 innotek GmbH
  *
  * This file is part of VirtualBox Open Source Edition (OSE), as
@@ -21 +21 @@
 *******************************************************************************/
 #define LOG_GROUP RTLOGGROUP_TIME
-#include "the-darwin-kernel.h"
+#include "the-nt-kernel.h"
 #include <iprt/time.h>
-#include <iprt/asm.h>
 
 
 DECLINLINE(uint64_t) rtTimeGetSystemNanoTS(void)
 {
-    static int8_t s_fSimple = -1;
+#if 1
+    ULONGLONG InterruptTime = KeQueryInterruptTime();
+    return (uint64_t)InterruptTime * 100;
+#else
+    LARGE_INTEGER InterruptTime;
+    do
+    {
+        InterruptTime.HighPart = ((KUSER_SHARED_DATA volatile *)SharedUserData)->InterruptTime.High1Time;
+        InterruptTime.LowPart = ((KUSER_SHARED_DATA volatile *)SharedUserData)->InterruptTime.LowPart;
+    } while (((KUSER_SHARED_DATA volatile *)SharedUserData)->InterruptTime.High2Time != InterruptTime.HighPart);
 
-    /* first call: check if life is simple or not. */
-    if (s_fSimple < 0)
-    {
-        struct mach_timebase_info Info;
-        clock_timebase_info(&Info);
-        ASMAtomicXchgS8((int8_t * volatile)&s_fSimple, Info.denom == 1 && Info.numer == 1);
-    }
-
-    /* special case: absolute time is in nanoseconds */
-    if (s_fSimple)
-        return mach_absolute_time();
-
-    /* general case: let mach do the mult/div for us. */
-    uint64_t u64;
-    absolutetime_to_nanoseconds(mach_absolute_time(), &u64);
-    return u64;
+    return (uint64_t)InterruptTime.QuadPart * 100;
+#endif
 }
 
 
-/**
- * Gets the current nanosecond timestamp.
- *
- * @returns nanosecond timestamp.
- */
 RTDECL(uint64_t) RTTimeNanoTS(void)
 {
@@ -60 +49 @@
 
 
-/**
- * Gets the current millisecond timestamp.
- *
- * @returns millisecond timestamp.
- */
 RTDECL(uint64_t) RTTimeMilliTS(void)
 {
@@ -71 +55 @@
 
 
-/**
- * Gets the current nanosecond timestamp.
- *
- * This differs from RTTimeNanoTS in that it will use system APIs and not do any
- * resolution or performance optimizations.
- *
- * @returns nanosecond timestamp.
- */
 RTDECL(uint64_t) RTTimeSystemNanoTS(void)
 {
@@ -85 +61 @@
 
 
-/**
- * Gets the current millisecond timestamp.
- *
- * This differs from RTTimeNanoTS in that it will use system APIs and not do any
- * resolution or performance optimizations.
- *
- * @returns millisecond timestamp.
- */
 RTDECL(uint64_t) RTTimeSystemMilliTS(void)
 {
@@ -99 +67 @@
 
 
-/**
- * Gets the current system time.
- *
- * @returns pTime.
- * @param   pTime   Where to store the time.
- */
 RTDECL(PRTTIMESPEC) RTTimeNow(PRTTIMESPEC pTime)
 {
-    uint32_t u32Secs;
-    uint32_t u32Nanosecs;
-    clock_get_calendar_nanotime(&u32Secs, &u32Nanosecs);
-    return RTTimeSpecSetNano(pTime, (uint64_t)u32Secs * 1000000000 + u32Nanosecs);
+    LARGE_INTEGER SystemTime;
+#if 1
+    KeQuerySystemTime(&SystemTime);
+#else
+    do
+    {
+        SystemTime.HighPart = ((KUSER_SHARED_DATA volatile *)SharedUserData)->SystemTime.High1Time;
+        SystemTime.LowPart = ((KUSER_SHARED_DATA volatile *)SharedUserData)->SystemTime.LowPart;
+    } while (((KUSER_SHARED_DATA volatile *)SharedUserData)->SystemTime.High2Time != SystemTime.HighPart);
+#endif
+    return RTTimeSpecSetNtTime(pTime, SystemTime.QuadPart);
 }