mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
102 lines
1.9 KiB
102 lines
1.9 KiB
/*++
|
|
|
|
Copyright (c) 1997-2000 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
memlog.c
|
|
|
|
Abstract:
|
|
|
|
DNS Resolver Service
|
|
|
|
In memory logging.
|
|
|
|
Author:
|
|
|
|
Glenn Curtis (glennc) Feb 1998
|
|
|
|
Revision History:
|
|
|
|
Jim Gilroy (jamesg) March 2000 cleanup
|
|
Jim Gilroy (jamesg) Nov 2000 create this module
|
|
|
|
--*/
|
|
|
|
|
|
#include "local.h"
|
|
|
|
|
|
//
|
|
// Memory event array
|
|
//
|
|
|
|
typedef struct _InMemoryEvent
|
|
{
|
|
DWORD Thread;
|
|
DWORD Ticks;
|
|
DWORD Checkpoint;
|
|
DWORD Data;
|
|
}
|
|
MEM_EVENT, *PMEM_EVENT;
|
|
|
|
|
|
#define MEM_EVENT_ARRAY_SIZE 200
|
|
|
|
PMEM_EVENT g_pEventArray = NULL;
|
|
|
|
LONG g_EventArrayLength = MEM_EVENT_ARRAY_SIZE;
|
|
LONG g_EventIndex = 0;
|
|
|
|
|
|
|
|
VOID
|
|
LogEventInMemory(
|
|
IN DWORD Checkpoint,
|
|
IN DWORD Data
|
|
)
|
|
{
|
|
DWORD index;
|
|
|
|
//
|
|
// allocate event table
|
|
// - use interlock to insure only done once
|
|
//
|
|
|
|
if ( !g_pEventArray )
|
|
{
|
|
PMEM_EVENT ptemp = (PMEM_EVENT)
|
|
HeapAlloc(
|
|
GetProcessHeap(),
|
|
HEAP_ZERO_MEMORY,
|
|
g_EventArrayLength * sizeof(MEM_EVENT) );
|
|
if ( !ptemp )
|
|
{
|
|
return;
|
|
}
|
|
if ( InterlockedCompareExchangePointer(
|
|
(PVOID *) &g_pEventArray,
|
|
ptemp,
|
|
0) != 0 )
|
|
{
|
|
HeapFree(GetProcessHeap(), 0, ptemp);
|
|
}
|
|
}
|
|
|
|
//
|
|
// write event to memory
|
|
//
|
|
|
|
index = InterlockedIncrement( &g_EventIndex );
|
|
|
|
index %= g_EventArrayLength;
|
|
|
|
g_pEventArray[index].Ticks = GetTickCount();
|
|
g_pEventArray[index].Checkpoint = Checkpoint;
|
|
g_pEventArray[index].Thread = (short) GetCurrentThreadId();
|
|
g_pEventArray[index].Data = Data;
|
|
}
|
|
|
|
//
|
|
// memlog.c
|
|
//
|