+/////////////////////////////////////////////////////////////////////////////
+// Name: tests/benchmarks/log.cpp
+// Purpose: Log-related benchmarks
+// Author: Vadim Zeitlin
+// Created: 2012-01-21
+// RCS-ID: $Id$
+// Copyright: (c) 2011 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#include "bench.h"
+
+#include "wx/log.h"
+
+// This class is used to check that the arguments of log functions are not
+// evaluated.
+struct NotCreated
+{
+ NotCreated() { wxAbort(); }
+
+ const char* AsStr() const { return "unreachable"; }
+};
+
+// Temporarily change the log level to the given one.
+class LogLevelSetter
+{
+public:
+ LogLevelSetter(wxLogLevel levelNew)
+ : m_levelOld(wxLog::GetLogLevel())
+ {
+ wxLog::SetLogLevel(levelNew);
+ }
+
+ ~LogLevelSetter()
+ {
+ wxLog::SetLogLevel(m_levelOld);
+ }
+
+private:
+ const wxLogLevel m_levelOld;
+
+ wxDECLARE_NO_COPY_CLASS(LogLevelSetter);
+};
+
+BENCHMARK_FUNC(LogDebugDisabled)
+{
+ LogLevelSetter level(wxLOG_Info);
+
+ wxLogDebug("Ignored debug message: %s", NotCreated().AsStr());
+
+ return true;
+}
+
+BENCHMARK_FUNC(LogTraceDisabled)
+{
+ LogLevelSetter level(wxLOG_Info);
+
+ wxLogTrace("", NotCreated().AsStr());
+
+ return true;
+}
+
+BENCHMARK_FUNC(LogTraceActive)
+{
+ static bool s_added = false;
+ if ( !s_added )
+ {
+ s_added = true;
+ wxLog::AddTraceMask("logbench");
+ }
+
+ // Remove the actual logging overhead by simply throwing away the log
+ // messages.
+ class NulLog : public wxLog
+ {
+ public:
+ NulLog()
+ : m_logOld(wxLog::SetActiveTarget(this))
+ {
+ }
+
+ virtual ~NulLog()
+ {
+ wxLog::SetActiveTarget(m_logOld);
+ }
+
+ protected:
+ virtual void DoLogRecord(wxLogLevel,
+ const wxString&,
+ const wxLogRecordInfo&)
+ {
+ }
+
+ wxLog* m_logOld;
+ };
+
+ NulLog nulLog;
+
+ wxLogTrace("logbench", "Trace message");
+
+ return true;
+}
+
+BENCHMARK_FUNC(LogTraceInactive)
+{
+ wxLogTrace("bloordyblop", "Trace message");
+
+ return true;
+}
projects / wxWidgets.git / commitdiff
