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