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/////////////////////////////////////////////////////////////////////////////
// Name: tests/benchmarks/strings.cpp
// Purpose: String-related benchmarks
// Author: Vadim Zeitlin
// Created: 2008-07-19
// Copyright: (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#include "bench.h"
#include "wx/tls.h"
#if defined(__UNIX__)
#define HAVE_PTHREAD
#include <pthread.h>
#elif defined(__WIN32__)
#define HAVE_WIN32_THREAD
#include "wx/msw/wrapwin.h"
#endif
#if wxCHECK_GCC_VERSION(3, 3)
#define HAVE_COMPILER_THREAD
#define wxTHREAD_SPECIFIC __thread
#elif wxCHECK_VISUALC_VERSION(7)
#define HAVE_COMPILER_THREAD
#define wxTHREAD_SPECIFIC __declspec(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_WIN32_THREAD
class TlsSlot
{
public:
TlsSlot()
{
m_slot = ::TlsAlloc();
}
~TlsSlot()
{
::TlsFree(m_slot);
}
operator DWORD() const { return m_slot; }
private:
DWORD m_slot;
DECLARE_NO_COPY_CLASS(TlsSlot)
};
BENCHMARK_FUNC(Win32TLS)
{
static TlsSlot s_slot;
for ( int n = 0; n < NUM_ITER; n++ )
{
if ( n % 2 )
::TlsSetValue(s_slot, 0);
else
::TlsSetValue(s_slot, &n);
}
return !::TlsGetValue(s_slot);
}
#endif // HAVE_WIN32_THREAD
#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
BENCHMARK_FUNC(wxTLS)
{
static wxTLS_TYPE(int) s_globalVar;
#define s_global wxTLS_VALUE(s_globalVar)
for ( int n = 0; n < NUM_ITER; n++ )
{
if ( n % 2 )
s_global = 0;
else
s_global = n;
}
return !s_global;
}
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