Changeset 70405 in vbox for trunk/include/iprt/nt

Timestamp:

Jan 1, 2018 5:45:14 PM (7 years ago)

Author:

vboxsync

Message:

IPRT/time-win.cpp: Use RtlGetInterruptTimePrecise for RTTimeSystemNanoTS when available (based on RDTSC) and using KUSER_SHARED_DATA from nt.h instead of duplicating it and its address.

File:

• trunk/include/iprt/nt/nt.h (modified) (2 diffs)

trunk/include/iprt/nt/nt.h

@@ -677 +677 @@
     ULONG                   LangGenerationCount;                        /**< 0x3a4 */
     ULONGLONG               Reserved4;                                  /**< 0x3a8 */
-    ULONGLONG volatile      InterruptTimeBias;                          /**< 0x3b0 */
+    ULONGLONG volatile      InterruptTimeBias;                          /**< 0x3b0 - What QueryUnbiasedInterruptTimePrecise
+                                                                         * subtracts from interrupt time. */
     ULONGLONG volatile      QpcBias;                                    /**< 0x3b8 */
     ULONG volatile          ActiveProcessorCount;                       /**< 0x3c0 */
@@ -2813 +2814 @@
 NTSYSAPI uint64_t NTAPI RtlGetSystemTimePrecise(VOID);
 typedef uint64_t (NTAPI * PFNRTLGETSYSTEMTIMEPRECISE)(VOID);
+NTSYSAPI uint64_t NTAPI RtlGetInterruptTimePrecise(uint64_t *puPerfTime);
+typedef uint64_t (NTAPI * PFNRTLGETINTERRUPTTIMEPRECISE)(uint64_t *);
+NTSYSAPI BOOLEAN NTAPI RtlQueryUnbiasedInterruptTime(uint64_t *puInterruptTime);
+typedef BOOLEAN (NTAPI * PFNRTLQUERYUNBIASEDINTERRUPTTIME)(uint64_t *);
 
 RT_C_DECLS_END