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TdhGetProperty helper added

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This commit is contained in:
Simon Rozman 2016-06-23 15:42:25 +02:00
parent 08bacb9e65
commit 304ce26dc9
1 changed files with 23 additions and 0 deletions
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23
include/WinStd/ETW.h
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@ -32,6 +32,7 @@
inline ULONG TdhGetEventInformation(_In_ PEVENT_RECORD pEvent, _In_ ULONG TdhContextCount, _In_ PTDH_CONTEXT pTdhContext, _Out_ std::unique_ptr<TRACE_EVENT_INFO> &info); inline ULONG TdhGetEventInformation(_In_ PEVENT_RECORD pEvent, _In_ ULONG TdhContextCount, _In_ PTDH_CONTEXT pTdhContext, _Out_ std::unique_ptr<TRACE_EVENT_INFO> &info);
inline ULONG TdhGetEventMapInformation(_In_ PEVENT_RECORD pEvent, _In_ LPWSTR pMapName, _Out_ std::unique_ptr<EVENT_MAP_INFO> &info); inline ULONG TdhGetEventMapInformation(_In_ PEVENT_RECORD pEvent, _In_ LPWSTR pMapName, _Out_ std::unique_ptr<EVENT_MAP_INFO> &info);
template<class _Ty, class _Ax> inline ULONG TdhGetProperty(_In_ PEVENT_RECORD pEvent, _In_ ULONG TdhContextCount, _In_ PTDH_CONTEXT pTdhContext, _In_ ULONG PropertyDataCount, _In_ PPROPERTY_DATA_DESCRIPTOR pPropertyData, _Out_ std::vector<_Ty, _Ax> &aData);
namespace winstd namespace winstd
{ {
@ -102,6 +103,28 @@ inline ULONG TdhGetEventMapInformation(_In_ PEVENT_RECORD pEvent, _In_ LPWSTR pM
} }
///
/// Retrieves a property value from the event data.
///
/// \sa [TdhGetProperty function](https://msdn.microsoft.com/en-us/library/windows/desktop/aa964843.aspx)
///
template<class _Ty, class _Ax>
inline ULONG TdhGetProperty(_In_ PEVENT_RECORD pEvent, _In_ ULONG TdhContextCount, _In_ PTDH_CONTEXT pTdhContext, _In_ ULONG PropertyDataCount, _In_ PPROPERTY_DATA_DESCRIPTOR pPropertyData, _Out_ std::vector<_Ty, _Ax> &aData)
{
ULONG ulSize, ulResult;
// Query property size.
ulResult = TdhGetPropertySize(pEvent, TdhContextCount, pTdhContext, PropertyDataCount, pPropertyData, &ulSize);
if (ulResult == ERROR_SUCCESS) {
// Query property value.
aData.resize((ulSize + sizeof(_Ty) - 1) / sizeof(_Ty));
ulResult = TdhGetProperty(pEvent, TdhContextCount, pTdhContext, PropertyDataCount, pPropertyData, ulSize, (LPBYTE)aData.data());
}
return ulResult;
}
namespace winstd namespace winstd
{ {
/// ///