//----------------------------------------------------------------------------
//
//?C++?dbgeng?extension?framework.
//
//?Copyright?（C）?Microsoft?Corporation?2005-2006.
//
//----------------------------------------------------------------------------

#include?
#include?
#include?

#if?defined（_PREFAST_）?||?defined（_PREFIX_）
#define?PRE_ASSUME（_Cond）?__analysis_assume（_Cond）
#else
#define?PRE_ASSUME（_Cond）
#endif

#define?IsSpace（_Char）?isspace（（UCHAR）（_Char））

WINDBG_EXTENSION_APIS64?ExtensionApis;
ExtCheckedPointer
????g_Ext（“g_Ext?not?set?used?outside?of?a?command“）;

//----------------------------------------------------------------------------
//
//?ExtException?family.
//
//----------------------------------------------------------------------------

void
ExtException::PrintMessageVa（__in_ecount（BufferChars）?PSTR?Buffer
?????????????????????????????__in?ULONG?BufferChars
?????????????????????????????__in?PCSTR?Format
?????????????????????????????__in?va_list?Args）
{
????StringCchVPrintfA（Buffer?BufferChars?Format?Args）;
????m_Message?=?Buffer;
}

void?WINAPIV
ExtException::PrintMessage（__in_ecount（BufferChars）?PSTR?Buffer
???????????????????????????__in?ULONG?BufferChars
???????????????????????????__in?PCSTR?Format
???????????????????????????...）
{
????va_list?Args;

????va_start（Args?Format）;
????PrintMessageVa（Buffer?BufferChars?Format?Args）;
????va_end（Args）;
}

//----------------------------------------------------------------------------
//
//?Holders.
//
//----------------------------------------------------------------------------

void
ExtCurrentThreadHolder::Refresh（void）
{
????HRESULT?Status;
????
????if?（（Status?=?g_Ext->m_System->
?????????GetCurrentThreadId（&m_ThreadId））?!=?S_OK）
????{
????????throw?ExtStatusException（Status
?????????????????????????????????“ExtCurrentThreadHolder::Refresh?failed“）;
????}
}

void
ExtCurrentThreadHolder::Restore（void）
{
????if?（m_ThreadId?!=?DEBUG_ANY_ID）
????{
????????PRE_ASSUME（g_Ext.IsSet（））;
????????if?（g_Ext.IsSet（））
????????{
????????????//?Ensure?that?g_Ext->?operator?will?not?throw?exception.
????????????g_Ext->m_System->SetCurrentThreadId（m_ThreadId）;
????????}
????????m_ThreadId?=?DEBUG_ANY_ID;
????}
}

void
ExtCurrentProcessHolder::Refresh（void）
{
????HRESULT?Status;
????
????if?（（Status?=?g_Ext->m_System->
?????????GetCurrentProcessId（&m_ProcessId））?!=?S_OK）
????{
????????throw?ExtStatusException（Status
?????????????????????????????????“ExtCurrentProcessHolder::Refresh?failed“）;
????}
}

void
ExtCurrentProcessHolder::Restore（void）
{
????if?（m_ProcessId?!=?DEBUG_ANY_ID）
????{
????????PRE_ASSUME（g_Ext.IsSet（））;
????????if?（g_Ext.IsSet（））
????????{
????????????//?Ensure?that?g_Ext->?operator?will?not?throw?exception.
????????????g_Ext->m_System->SetCurrentProcessId（m_ProcessId）;
????????}
????????m_ProcessId?=