Author: fireball
Date: Tue Jan 5 17:28:47 2010
New Revision: 44947
URL: http://svn.reactos.org/svn/reactos?rev=44947&view=rev
Log:
- Implement SystemException and SystemContextSwitch information cases in
NtQuerySystemInformation by Samuel Serapion, modified by me (comments, coding
style).
See issue #5054 for more details.
Modified:
trunk/reactos/ntoskrnl/ex/sysinfo.c
Modified: trunk/reactos/ntoskrnl/ex/sysinfo.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ex/sysinfo.c?rev=44947&r1=44946&r2=44947&view=diff
==============================================================================
--- trunk/reactos/ntoskrnl/ex/sysinfo.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/ex/sysinfo.c [iso-8859-1] Tue Jan 5 17:28:47 2010
@@ -1467,9 +1467,35 @@
/* Class 33 - Exception Information */
QSI_DEF(SystemExceptionInformation)
{
- /* FIXME */
- DPRINT1("NtQuerySystemInformation - SystemExceptionInformation not
implemented\n");
- return STATUS_NOT_IMPLEMENTED;
+ PSYSTEM_EXCEPTION_INFORMATION ExceptionInformation =
+ (PSYSTEM_EXCEPTION_INFORMATION)Buffer;
+ PKPRCB Prcb;
+ ULONG i, AlignmentFixupCount = 0, ExceptionDispatchCount = 0;
+ ULONG FloatingEmulationCount = 0, ByteWordEmulationCount = 0;
+
+ /* Check size of a buffer, it must match our expectations */
+ if (sizeof(SYSTEM_EXCEPTION_INFORMATION) != Size)
+ return STATUS_INFO_LENGTH_MISMATCH;
+
+ /* Sum up exception count information from all processors */
+ for (i = 0; i < KeNumberProcessors; i++)
+ {
+ Prcb = KiProcessorBlock[i];
+ if (Prcb)
+ {
+ AlignmentFixupCount += Prcb->KeAlignmentFixupCount;
+ ExceptionDispatchCount += Prcb->KeExceptionDispatchCount;
+ FloatingEmulationCount += Prcb->KeFloatingEmulationCount;
+ }
+ }
+
+ /* Save information in user's buffer */
+ ExceptionInformation->AlignmentFixupCount = AlignmentFixupCount;
+ ExceptionInformation->ExceptionDispatchCount = ExceptionDispatchCount;
+ ExceptionInformation->FloatingEmulationCount = FloatingEmulationCount;
+ ExceptionInformation->ByteWordEmulationCount = ByteWordEmulationCount;
+
+ return STATUS_SUCCESS;
}
/* Class 34 - Crash Dump State Information */
@@ -1500,9 +1526,42 @@
/* Class 36 - Context Switch Information */
QSI_DEF(SystemContextSwitchInformation)
{
- /* FIXME */
- DPRINT1("NtQuerySystemInformation - SystemContextSwitchInformation not
implemented\n");
- return STATUS_NOT_IMPLEMENTED;
+ PSYSTEM_CONTEXT_SWITCH_INFORMATION ContextSwitchInformation =
+ (PSYSTEM_CONTEXT_SWITCH_INFORMATION)Buffer;
+ ULONG ContextSwitches, i;
+ PKPRCB Prcb;
+
+ /* Check size of a buffer, it must match our expectations */
+ if (sizeof(SYSTEM_CONTEXT_SWITCH_INFORMATION) != Size)
+ return STATUS_INFO_LENGTH_MISMATCH;
+
+ /* Calculate total value of context switches across all processors */
+ ContextSwitches = 0;
+ for (i = 0; i < KeNumberProcessors; i ++)
+ {
+ Prcb = KiProcessorBlock[i];
+ if (Prcb)
+ {
+ ContextSwitches += KeGetContextSwitches(Prcb);
+ }
+ }
+
+ ContextSwitchInformation->ContextSwitches = ContextSwitches;
+
+ /* FIXME */
+ ContextSwitchInformation->FindAny = 0;
+ ContextSwitchInformation->FindLast = 0;
+ ContextSwitchInformation->FindIdeal = 0;
+ ContextSwitchInformation->IdleAny = 0;
+ ContextSwitchInformation->IdleCurrent = 0;
+ ContextSwitchInformation->IdleLast = 0;
+ ContextSwitchInformation->IdleIdeal = 0;
+ ContextSwitchInformation->PreemptAny = 0;
+ ContextSwitchInformation->PreemptCurrent = 0;
+ ContextSwitchInformation->PreemptLast = 0;
+ ContextSwitchInformation->SwitchToIdle = 0;
+
+ return STATUS_SUCCESS;
}
/* Class 37 - Registry Quota Information */
