mapins.cpp

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C++ 代码 · 共 108 行

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
*    NON-INFRINGEMENT. Please see the License for the specific language
*    governing rights and limitations under the License.
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*  ========================================================================
*
* Description: Benchmark program that tests insertion into map
*
****************************************************************************/

#include <iostream>
#include <map>
#include "timer.h"
#include "testdata.hpp"

#if defined(_STLPORT_VERSION) || defined(_MSC_VER)
    
#else
    #include "fastalloc.hpp"
#endif

int comparecount = 0;
struct cmp{
    bool operator()( int const x, int const y ) const { comparecount++; return( x < y ); }
};

double doit( TestData const & data, int const mapsize, int const repetitions )
{
#if defined(_STLPORT_VERSION) || defined(_MSC_VER)
    typedef std::map< int, int, cmp > m_t;
#else
    typedef std::map< int, int, cmp, BlockAlloc<int> > m_t;
    //typedef std::map< int, int, cmp > m_t;
#endif
    
    //m_t *m = new m_t[repetitions];
    m_t m;
    int i, j;
    
    comparecount = 0;
    std::cout<<"start\n";
    TimerOn( );
    
    for( i = 0; i < repetitions; i++ ){
        for( j = 0; j < mapsize; j++ ){
            //std::cout<<i<<" "<<j<<"\n";
            //m[i].insert( m_t::value_type(data[j], j) );
            m.insert( m_t::value_type(data[j], j) );
            //if( !m[i]._Sane() ) std::cout<<"!!!!!!!!!!!!!!insane\n";
        }
        m.clear();
    }
    
    TimerOff( );
    std::cout<<"stop\n";
    //delete[] m;
    
    return( ( TimerElapsed( )/repetitions ) * 1000 );
}


int main( )
{
    int const repetitions = 1000;
    int const mapsize = 20000;
    TestData data(mapsize);
    
    data.fill_linear();
    
    std::cout << "\ninserting " << mapsize 
              << " linearly ordered elements into map "
              << repetitions << " times\n";
    std::cout << doit( data, mapsize, repetitions ) << " ms/pass\n";
    std::cout << "compare called " << comparecount/repetitions 
              << " times/pass\n";

    data.fill_rand();
    
    std::cout << "\ninserting " << mapsize 
              << " randomly ordered elements into map "
              << repetitions << " times\n";
    std::cout << doit( data, mapsize, repetitions ) << " ms/pass\n";
    std::cout << "compare called " << comparecount/repetitions 
              << " times/pass\n";
    
    return( 0 );
}