test: logger.c File Reference

logger.c File Reference

#include "exp.h"


Functions
PEX_DEBUG_LOG	ExCreateDebugLog (IN UCHAR MaximumNumberOfTags, IN ULONG MaximumNumberOfEvents)
UCHAR	ExCreateDebugLogTag (IN PEX_DEBUG_LOG Log, IN PCHAR Name, IN UCHAR Format1, IN UCHAR Format2, IN UCHAR Format3, IN UCHAR Format4)
VOID	ExDebugLogEvent (IN PEX_DEBUG_LOG Log, IN UCHAR Tag, IN ULONG Data1, IN ULONG Data2, IN ULONG Data3, IN ULONG Data4)

Function Documentation

PEX_DEBUG_LOG ExCreateDebugLog	(	IN UCHAR	MaximumNumberOfTags,
		IN ULONG	MaximumNumberOfEvents
	)

Definition at line 30 of file logger.c.

References ExAllocatePoolWithTag, _EX_DEBUG_LOG::First, KeInitializeSpinLock(), _EX_DEBUG_LOG::Last, _EX_DEBUG_LOG::Lock, _EX_DEBUG_LOG::MaximumNumberOfTags, _EX_DEBUG_LOG::Next, NonPagedPool, NULL, Size, and _EX_DEBUG_LOG::Tags.

00034 {
00035     PEX_DEBUG_LOG Log;
00036     ULONG Size;
00037 
00038     Size = sizeof( EX_DEBUG_LOG ) +
00039             (MaximumNumberOfTags *
00040              sizeof( EX_DEBUG_LOG_TAG )
00041             ) +
00042             (MaximumNumberOfEvents *
00043              sizeof( EX_DEBUG_LOG_EVENT )
00044             );
00045 
00046 
00047     Log = ExAllocatePoolWithTag( NonPagedPool, Size, 'oLbD' );
00048     if (Log != NULL) {
00049         RtlZeroMemory( Log, Size );
00050         KeInitializeSpinLock( &Log->Lock );
00051         Log->MaximumNumberOfTags = MaximumNumberOfTags;
00052         Log->Tags = (PEX_DEBUG_LOG_TAG)(Log + 1);
00053         Log->First = (PEX_DEBUG_LOG_EVENT)(Log->Tags + MaximumNumberOfTags);
00054         Log->Last = Log->First + MaximumNumberOfEvents;
00055         Log->Next = Log->First;
00056         }
00057 
00058     return Log;
00059 }

UCHAR ExCreateDebugLogTag	(	IN PEX_DEBUG_LOG	Log,
		IN PCHAR	Name,
		IN UCHAR	Format1,
		IN UCHAR	Format2,
		IN UCHAR	Format3,
		IN UCHAR	Format4
	)

Definition at line 62 of file logger.c.

References ExAllocatePoolWithTag, ExFreePool(), _EX_DEBUG_LOG_TAG::Format, Name, _EX_DEBUG_LOG_TAG::Name, NonPagedPool, NULL, Size, and strlen().

00070 {
00071     KIRQL OldIrql;
00072     ULONG Size;
00073     PEX_DEBUG_LOG_TAG Tag;
00074     UCHAR TagIndex;
00075     PCHAR CapturedName;
00076 
00077     Size = strlen( Name );
00078     CapturedName = ExAllocatePoolWithTag( NonPagedPool, Size, 'oLbD' );
00079     RtlMoveMemory( CapturedName, Name, Size + 1 );
00080 
00081     ExAcquireSpinLock( &Log->Lock, &OldIrql );
00082 
00083     if (Log->NumberOfTags < Log->MaximumNumberOfTags) {
00084         TagIndex = (UCHAR)(Log->NumberOfTags++);
00085         Tag = &Log->Tags[ TagIndex ];
00086         Tag->Name = CapturedName;
00087         Tag->Format[ 0 ] = Format1;
00088         Tag->Format[ 1 ] = Format2;
00089         Tag->Format[ 2 ] = Format3;
00090         Tag->Format[ 3 ] = Format4;
00091         CapturedName = NULL;
00092         }
00093     else {
00094         TagIndex = (UCHAR)0xFF;
00095         }
00096 
00097     ExReleaseSpinLock( &Log->Lock, OldIrql );
00098 
00099     if (CapturedName != NULL) {
00100         ExFreePool( CapturedName );
00101         }
00102     return TagIndex;
00103 }

VOID ExDebugLogEvent	(	IN PEX_DEBUG_LOG	Log,
		IN UCHAR	Tag,
		IN ULONG	Data1,
		IN ULONG	Data2,
		IN ULONG	Data3,
		IN ULONG	Data4
	)

Definition at line 106 of file logger.c.

References _ETHREAD::Cid, _EX_DEBUG_LOG_EVENT::Data, KeQuerySystemTime(), _EX_DEBUG_LOG_EVENT::ProcessId, PsGetCurrentThread, _EX_DEBUG_LOG_EVENT::Tag, _EX_DEBUG_LOG_EVENT::ThreadId, and _EX_DEBUG_LOG_EVENT::Time.

00114 {
00115     KIRQL OldIrql;
00116     PEX_DEBUG_LOG_EVENT p;
00117     PETHREAD Thread = PsGetCurrentThread();
00118     LARGE_INTEGER CurrentTime;
00119 
00120     KeQuerySystemTime( &CurrentTime );
00121 
00122     ExAcquireSpinLock( &Log->Lock, &OldIrql );
00123 
00124     p = Log->Next;
00125     if (p == Log->Last) {
00126         p = Log->First;
00127         }
00128     Log->Next = p + 1;
00129 
00130     p->ThreadId = Thread->Cid.UniqueThread;
00131     p->ProcessId = Thread->Cid.UniqueProcess;
00132     p->Time = CurrentTime.LowPart;
00133     p->Tag = Tag;
00134     p->Data[ 0 ] = Data1;
00135     p->Data[ 1 ] = Data2;
00136     p->Data[ 2 ] = Data3;
00137     p->Data[ 3 ] = Data4;
00138 
00139     ExReleaseSpinLock( &Log->Lock, OldIrql );
00140 
00141     return;
00142 }

Generated on Sat May 15 19:44:33 2004 for test by

1.3.7

logger.c File Reference

Functions

Function Documentation