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Allow disabling context switch tracing.

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Currently only on Windows.
This commit is contained in:
Bartosz Taudul 2020-11-05 23:56:05 +01:00
parent a34abe646c
commit 4caaa325c2
2 changed files with 5 additions and 2 deletions
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5
client/TracySysTrace.cpp
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@ -368,7 +368,10 @@ bool SysTraceStart( int64_t& samplingPeriod )
const auto psz = sizeof( EVENT_TRACE_PROPERTIES ) + sizeof( KERNEL_LOGGER_NAME );
s_prop = (EVENT_TRACE_PROPERTIES*)tracy_malloc( psz );
memset( s_prop, 0, sizeof( EVENT_TRACE_PROPERTIES ) );
ULONG flags = EVENT_TRACE_FLAG_CSWITCH | EVENT_TRACE_FLAG_DISPATCHER | EVENT_TRACE_FLAG_THREAD;
ULONG flags = 0;
#ifndef TRACY_NO_CONTEXT_SWITCH
flags = EVENT_TRACE_FLAG_CSWITCH | EVENT_TRACE_FLAG_DISPATCHER | EVENT_TRACE_FLAG_THREAD;
#endif
if( isOs64Bit ) flags |= EVENT_TRACE_FLAG_PROFILE;
s_prop->EnableFlags = flags;
s_prop->LogFileMode = EVENT_TRACE_REAL_TIME_MODE;

2
manual/tracy.tex
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@ -1743,7 +1743,7 @@ As a corollary, it is often not enough to know how long it took to execute a zon
To solve this problem, Tracy collects context switch\footnote{A context switch happens when any given CPU core stops executing one thread and starts running another one.} information. This data can be then used to see when a zone was in the executing state and where it was waiting to be resumed.
Context switch data capture may be disabled by adding the \texttt{TRACY\_NO\_SYSTEM\_TRACING} define to the client.
Context switch data capture may be disabled by adding the \texttt{TRACY\_NO\_CONTEXT\_SWITCH} define to the client. Alternatively, the \texttt{TRACY\_NO\_SYSTEM\_TRACING} define may be used to disable all tracing needing privilege escalation.
\begin{bclogo}[
noborder=true,