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Use a TraceNoop instance when tracing disabled (to be used in Chromium).

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I'm also adding an empty implementation for static methods in the Trace
interface since the default implementation relies on TraceImpl.
Review URL: http://webrtc-codereview.appspot.com/267013

git-svn-id: http://webrtc.googlecode.com/svn/trunk@946 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
tommi@webrtc.org 2011-11-15 12:23:36 +00:00
parent bc91d5af86
commit cde1e7f42a
1 changed files with 73 additions and 14 deletions
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87
src/system_wrappers/source/trace_impl.cc
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@ -34,6 +34,20 @@
namespace webrtc {
static WebRtc_UWord32 levelFilter = kTraceDefault;
#ifdef WEBRTC_NO_TRACE
class TraceNoop : public Trace
{
public:
TraceNoop()
{
}
virtual ~TraceNoop()
{
}
};
#endif
// Construct On First Use idiom. Avoids "static initialization order fiasco".
Trace* TraceImpl::StaticInstance(TraceCount inc, const TraceLevel level)
{
@ -99,7 +113,7 @@ Trace* TraceImpl::StaticInstance(TraceCount inc, const TraceLevel level)
{
delete static_cast<TraceImpl*>(oldValue);
}
// Re-aqcuire the lock.
// Re-acquire the lock.
crtiSect->Enter();
return NULL;
}
@ -179,16 +193,6 @@ Trace* TraceImpl::StaticInstance(TraceCount inc, const TraceLevel level)
return theTrace;
}
void Trace::CreateTrace()
{
TraceImpl::StaticInstance(WEBRTC_TRACE_INC);
}
void Trace::ReturnTrace()
{
TraceImpl::StaticInstance(WEBRTC_TRACE_DEC);
}
TraceImpl* TraceImpl::GetTrace(const TraceLevel level)
{
return (TraceImpl*)StaticInstance(WEBRTC_TRACE_INC_NO_CREATE, level);
@ -196,7 +200,9 @@ TraceImpl* TraceImpl::GetTrace(const TraceLevel level)
Trace* TraceImpl::CreateTrace()
{
#if defined(_WIN32)
#ifdef WEBRTC_NO_TRACE
return new TraceNoop();
#elif defined(_WIN32)
return new TraceWindows();
#else
return new TracePosix();
@ -874,17 +880,29 @@ bool TraceImpl::CreateFileName(
return true;
}
#ifndef WEBRTC_NO_TRACE
void Trace::CreateTrace()
{
TraceImpl::StaticInstance(WEBRTC_TRACE_INC);
}
void Trace::ReturnTrace()
{
TraceImpl::StaticInstance(WEBRTC_TRACE_DEC);
}
WebRtc_Word32 Trace::SetLevelFilter(WebRtc_UWord32 filter)
{
levelFilter = filter;
return 0;
};
}
WebRtc_Word32 Trace::LevelFilter(WebRtc_UWord32& filter)
{
filter = levelFilter;
return 0;
};
}
WebRtc_Word32 Trace::TraceFile(WebRtc_Word8 fileName[FileWrapper::kMaxFileNameSize])
{
@ -951,4 +969,45 @@ void Trace::Add(const TraceLevel level, const TraceModule module,
ReturnTrace();
}
}
#else
void Trace::CreateTrace()
{
}
void Trace::ReturnTrace()
{
}
WebRtc_Word32 Trace::SetLevelFilter(WebRtc_UWord32 filter)
{
return 0;
}
WebRtc_Word32 Trace::LevelFilter(WebRtc_UWord32& filter)
{
return 0;
}
WebRtc_Word32 Trace::TraceFile(WebRtc_Word8 fileName[FileWrapper::kMaxFileNameSize])
{
return -1;
}
WebRtc_Word32 Trace::SetTraceFile(const WebRtc_Word8* fileName,
const bool addFileCounter)
{
return -1;
}
WebRtc_Word32 Trace::SetTraceCallback(TraceCallback* callback)
{
return -1;
}
void Trace::Add(const TraceLevel level, const TraceModule module,
const WebRtc_Word32 id, const char* msg, ...)
{
}
#endif
} // namespace webrtc