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StopAndRelogTracingSession

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The C++ Build Insights SDK is compatible with Visual Studio 2017 and later. To see the documentation for these versions, set the Visual Studio Version selector control for this article to Visual Studio 2017 or later. It's found at the top of the table of contents on this page.

The StopAndRelogTracingSession function stops an ongoing tracing session and saves the resulting trace in a temporary file. A relogging session is then immediately started using the temporary file as an input. The final relogged trace produced by the relogging session is saved in a file specified by the caller. Executables calling this function must have administrator privileges.

Syntax

template <
    typename... TAnalyzerGroupMembers,
    typename... TReloggerGroupMembers>
RESULT_CODE StopAndRelogTracingSession(
    const char*                                   sessionName,
    const char*                                   outputLogFile,
    TRACING_SESSION_STATISTICS*                   statistics,
    unsigned                                      numberOfAnalysisPasses,
    unsigned long long                            systemEventsRetentionFlags,
    StaticAnalyzerGroup<TAnalyzerGroupMembers...> analyzerGroup,
    StaticReloggerGroup<TReloggerGroupMembers...> reloggerGroup);

template <
    typename... TAnalyzerGroupMembers,
    typename... TReloggerGroupMembers>
RESULT_CODE StopAndRelogTracingSession(
    const wchar_t*                                sessionName,
    const wchar_t*                                outputLogFile,
    TRACING_SESSION_STATISTICS*                   statistics,
    unsigned                                      numberOfAnalysisPasses,
    unsigned long long                            systemEventsRetentionFlags,
    StaticAnalyzerGroup<TAnalyzerGroupMembers...> analyzerGroup,
    StaticReloggerGroup<TReloggerGroupMembers...> reloggerGroup);

Parameters

sessionName
The name of the tracing session to stop. Use the same session name as the one passed to StartTracingSession, StartTracingSessionA, or StartTracingSessionW.

outputLogFile
The file in which to write the relogged trace produced by the relogging session.

statistics
Pointer to a TRACING_SESSION_STATISTICS object. StopAndRelogTracingSession writes trace collection statistics in this object before returning.

numberOfAnalysisPasses
The number of analysis passes to run on the trace. The trace gets passed through the provided analyzer group once per analysis pass.

systemEventsRetentionFlags
A RELOG_RETENTION_SYSTEM_EVENT_FLAGS bitmask that specifies which system ETW events to keep in the relogged trace.

analyzerGroup
The analyzer group used for the analysis phase of the relogging session. Call MakeStaticAnalyzerGroup to create an analyzer group. If you wish to use a dynamic analyzer group obtained from MakeDynamicAnalyzerGroup, first encapsulate it inside a static analyzer group by passing its address to MakeStaticAnalyzerGroup.

reloggerGroup
The relogger group that relogs events into the trace file specified in outputLogFile. Call MakeStaticReloggerGroup to create a relogger group. If you wish to use a dynamic relogger group obtained from MakeDynamicReloggerGroup, first encapsulate it inside a static relogger group by passing its address to MakeStaticReloggerGroup.

Return Value

A result code from the RESULT_CODE enum.

Remarks

The input trace is passed through the analyzer group numberOfAnalysisPasses times. There's no similar option for relogging passes. The trace is passed trough the relogger group only once, after all analysis passes are complete.

The relogging of system events like CPU samples from within a relogger class isn't supported. Use the systemEventsRetentionFlags parameter to decide which system events to keep in the output trace.