EtwpCompressPendingBuffers

char __fastcall EtwpCompressPendingBuffers(__int64 a1){
  __int64 v1; 
  LARGE_INTEGER PerformanceCounter; 
  _WMI_BUFFER_HEADER *v4; 
  _WMI_BUFFER_HEADER *v5; 
  LARGE_INTEGER v6; 
  __int64 v7; 
  LONGLONG v8; 
  _ETHREAD *CurrentThread; 
  unsigned int SessionId; 
  char v11; 
  int v12; 
  unsigned __int64 v13; 
  bool v14; 
  __int64 v15; 
  int v16; 
  unsigned int v17; 
  __int64 v18; 
  _QWORD *v19; 
  int v21; 
  v1 = a1 + 1128;
  ExAcquirePushLockExclusiveEx(a1 + 1128, 0i64);
  EtwpRotateCompressionTargetIfNeeded(a1);
  while( 1 )
  {
    PerformanceCounter = KeQueryPerformanceCounter(0i64);
    v4 = (_WMI_BUFFER_HEADER *)EtwpDequeueBufferPendingCompression(a1);
    v5 = v4;
    if( !v4 )
      break;
    if( v4->ReferenceCount > 0 || v4->SavedOffset > 0x48 && v4->CurrentOffset > 0x48 )
    {
      if( (int)EtwpCompressBuffer(a1, (__int64)v4) < 0 )
        _InterlockedAdd((volatile signed __int32 *)(a1 + 268), 1u);
      EtwpCompleteBuffer((_WMI_LOGGER_CONTEXT *)a1, v5, 0i64);
      v6 = KeQueryPerformanceCounter(0i64);
      v7 = *(_QWORD *)(a1 + 1256);
      v8 = v6.QuadPart - PerformanceCounter.QuadPart;
      if( v7 )
        *(_QWORD *)(a1 + 1256) = (v8 + 4 * v7) / 5;
      else
        *(_QWORD *)(a1 + 1256) = v8;
    }
    else
    {
      EtwpCompleteBuffer((_WMI_LOGGER_CONTEXT *)a1, v4, 0i64);
    }
  }
  if( (_InterlockedExchangeAdd64((volatile signed __int64 *)v1, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
    ExfTryToWakePushLock((volatile INT64 *)v1);
  v21 = 0;
  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  if( (unsigned int)MiGetSystemRegionType(v1) == 1 )
    SessionId = MmGetSessionIdEx(*((_QWORD *)CurrentThread + 23));
  else
    SessionId = -1;
  --*((_WORD *)CurrentThread + 243);
  v11 = ++*((_BYTE *)CurrentThread + 794);
  v12 = (*((char *)CurrentThread + 792) | *((char *)CurrentThread + 870)) ^ 0x3F;
  while( 1 )
  {
    v14 = !_BitScanReverse((unsigned int *)&v15, v12);
    if( v14 )
      goto LABEL_24;
    v13 = *((_QWORD *)CurrentThread + 100) + 96 * v15;
    v12 &= ~(1 << v15);
    if( (*(_BYTE *)(v13 + 26) & 1) != 0
      && (*(_DWORD *)(v13 + 32) & 1) == 0
      && (*(_QWORD *)(v13 + 32) & 0x7FFFFFFFFFFFFFFCi64) == (v1 & 0x7FFFFFFFFFFFFFFCi64)
      && *(_DWORD *)(v13 + 40) == SessionId )
    {
      *(_BYTE *)(v13 + 26) &= ~1u;
      if( *(_QWORD *)(v13 + 32) )
        break;
    }
  }
  if( !v13 )
  {
LABEL_24:
    if( (*((_DWORD *)CurrentThread + 30) & 0x10000) == 0 )
      KeBugCheckEx(0x162u, (ULONG_PTR)CurrentThread, v1, SessionId, 0i64);
    goto LABEL_31;
  }
  *(_BYTE *)(v13 + 32) |= 2u;
  if( *(__int64 *)(v13 + 32) < 0 )
    KiAbEntryRemoveFromTree(v13);
  v16 = *(_DWORD *)(v13 + 88) & 0x1FFFF;
  v17 = *(_DWORD *)(v13 + 88) & 0xFFFE0000;
  *(_BYTE *)(v13 + 25) &= ~1u;
  v21 = v16;
  *(_DWORD *)(v13 + 88) = v17;
  *(_QWORD *)(v13 + 32) = 0i64;
  v18 = (__int64)(v13 - *((_QWORD *)CurrentThread + 100)) / 96;
  if( v11 == 1 )
    *((_BYTE *)CurrentThread + 792) |= 1 << v18;
  else
    _InterlockedOr8((volatile signed __int8 *)CurrentThread + 870, 1 << v18);
LABEL_31:
  --*((_BYTE *)CurrentThread + 794);
  LOBYTE(v19) = KiAbThreadRemoveBoosts((ULONG_PTR)CurrentThread, v1, (unsigned int *)&v21);
  v14 = (*((_WORD *)CurrentThread + 243))++ == 0xFFFF;
  if( v14 )
  {
    v19 = (_QWORD *)((char *)CurrentThread + 152);
    if( (_QWORD *)*v19 != v19 )
      LOBYTE(v19) = KiCheckForKernelApcDelivery();
  }
  return(char)v19;
}

Referenced by: