+/////////////////////////////////////////////////////////////////////////////
+// Name: tests/benchmarks/strings.cpp
+// Purpose: String-related benchmarks
+// Author: Vadim Zeitlin
+// Created: 2008-07-19
+// RCS-ID: $Id$
+// Copyright: (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence: wxWindows license
+/////////////////////////////////////////////////////////////////////////////
+
+#include "bench.h"
+
+#ifdef __UNIX__
+ #define HAVE_PTHREAD
+ #include <pthread.h>
+#endif
+
+#if wxCHECK_GCC_VERSION(3, 3)
+ #define HAVE_COMPILER_THREAD
+ #define wxTHREAD_SPECIFIC __thread
+#endif
+
+// uncomment this to also test Boost version (you will also need to link with
+// libboost_threads)
+//#define HAVE_BOOST_THREAD
+#ifdef HAVE_BOOST_THREAD
+ #include <boost/thread/tss.hpp>
+#endif
+
+
+static const int NUM_ITER = 1000;
+
+// this is just a baseline
+BENCHMARK_FUNC(DummyTLS)
+{
+ static int s_global = 0;
+
+ for ( int n = 0; n < NUM_ITER; n++ )
+ {
+ if ( n % 2 )
+ s_global = 0;
+ else
+ s_global = n;
+ }
+
+ return !s_global;
+}
+
+#ifdef HAVE_COMPILER_THREAD
+
+BENCHMARK_FUNC(CompilerTLS)
+{
+ static wxTHREAD_SPECIFIC int s_global = 0;
+
+ for ( int n = 0; n < NUM_ITER; n++ )
+ {
+ if ( n % 2 )
+ s_global = 0;
+ else
+ s_global = n;
+ }
+
+ return !s_global;
+}
+
+#endif // HAVE_COMPILER_THREAD
+
+#ifdef HAVE_PTHREAD
+
+class PthreadKey
+{
+public:
+ PthreadKey()
+ {
+ pthread_key_create(&m_key, NULL);
+ }
+
+ ~PthreadKey()
+ {
+ pthread_key_delete(m_key);
+ }
+
+ operator pthread_key_t() const { return m_key; }
+
+private:
+ pthread_key_t m_key;
+
+ DECLARE_NO_COPY_CLASS(PthreadKey)
+};
+
+BENCHMARK_FUNC(PosixTLS)
+{
+ static PthreadKey s_key;
+
+ for ( int n = 0; n < NUM_ITER; n++ )
+ {
+ if ( n % 2 )
+ pthread_setspecific(s_key, 0);
+ else
+ pthread_setspecific(s_key, &n);
+ }
+
+ return !pthread_getspecific(s_key);
+}
+
+#endif // HAVE_PTHREAD
+
+#ifdef HAVE_BOOST_THREAD
+
+BENCHMARK_FUNC(BoostTLS)
+{
+ static boost::thread_specific_ptr<int> s_ptr;
+ if ( !s_ptr.get() )
+ s_ptr.reset(new int(0));
+
+ for ( int n = 0; n < NUM_ITER; n++ )
+ {
+ if ( n % 2 )
+ *s_ptr = 0;
+ else
+ *s_ptr = n;
+ }
+
+ return !*s_ptr;
+}
+
+#endif // HAVE_BOOST_THREAD
projects / wxWidgets.git / commitdiff
