Changeset 9582 in vbox for trunk/src/VBox/Runtime/r0drv

Timestamp:

Jun 10, 2008 11:38:18 PM (17 years ago)

Author:

vboxsync

Message:

Query the procedures in the init function.

Location:

trunk/src/VBox/Runtime/r0drv/nt

Files:

• initterm-r0drv-nt.cpp (modified) (2 diffs)
• internal-r0drv-nt.h (modified) (2 diffs)
• mp-r0drv-nt.cpp (modified) (2 diffs)

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

@@ -53 +53 @@
 RTCPUSET g_rtMpNtCpuSet;
 
+/** ExSetTimerResolution, introduced in W2K. */
+PFNMYEXSETTIMERRESOLUTION g_pfnrtNtExSetTimerResolution;
+/** KeFlushQueuedDpcs, introduced in XP. */
+PFNMYKEFLUSHQUEUEDDPCS g_pfnrtNtKeFlushQueuedDpcs;
+
 
 int rtR0InitNative(void)
@@ -62 +67 @@
     RTCpuSetEmpty(&g_rtMpNtCpuSet);
     RTCpuSetFromU64(&g_rtMpNtCpuSet, ActiveProcessors);
+
+    /*
+     * Initialize the function pointers.
+     */
+    UNICODE_STRING RoutineName;
+    RtlInitUnicodeString(&RoutineName, L"ExSetTimerResolution");
+    g_pfnrtNtExSetTimerResolution = (PFNMYEXSETTIMERRESOLUTION)MmGetSystemRoutineAddress(&RoutineName);
+
+    RtlInitUnicodeString(&RoutineName, L"KeFlushQueuedDpcs");
+    g_pfnrtNtKeFlushQueuedDpcs = (PFNMYKEFLUSHQUEUEDDPCS)MmGetSystemRoutineAddress(&RoutineName);
+
 
 #if 0 /* W2K8 support */

trunk/src/VBox/Runtime/r0drv/nt/internal-r0drv-nt.h

@@ -36 +36 @@
 __BEGIN_DECLS
 
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+typedef ULONG (__stdcall *PFNMYEXSETTIMERRESOLUTION)(ULONG, BOOLEAN);
+typedef VOID (__stdcall *PFNMYKEFLUSHQUEUEDDPCS)(VOID);
+
 
 /*******************************************************************************
@@ -41 +47 @@
 *******************************************************************************/
 extern RTCPUSET g_rtMpNtCpuSet;
+extern PFNMYEXSETTIMERRESOLUTION g_pfnrtNtExSetTimerResolution;
+extern PFNMYKEFLUSHQUEUEDDPCS g_pfnrtNtKeFlushQueuedDpcs;
 
 

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

@@ -188 +188 @@
 
     /* KeFlushQueuedDpcs is not present in Windows 2000; import it dynamically so we can just fail this call. */
-    UNICODE_STRING  RoutineName;
-    RtlInitUnicodeString(&RoutineName, L"KeFlushQueuedDpcs");
-    VOID (*pfnKeFlushQueuedDpcs)(VOID) = (VOID (*)(VOID))MmGetSystemRoutineAddress(&RoutineName);
-    if (!pfnKeFlushQueuedDpcs)
+    if (!g_pfnrtNtKeFlushQueuedDpcs)
         return VERR_NOT_SUPPORTED;
 
@@ -258 +255 @@
 
     /* Flush all DPCs and wait for completion. (can take long!) */
-    pfnKeFlushQueuedDpcs();
+    g_pfnrtNtKeFlushQueuedDpcs();
 
     ExFreePool(pArgs);