main.c

PB 熟悉的哥们希望大家可以互相学习一下

/*****************************************************************
 *                                                               *
 * Copyright (c) 2001-2007 McObject LLC. All Right Reserved.     *
 *                                                               *
 *****************************************************************/

/* This test allows to receive some results about the eXtremeDB performance
 * for all basic operations. This test inserts N objects into a class, creating
 * a hash index as it does insertions; then separatelly builds a tree index,
 * performs searches using a tree and a hash table, an a sequential search.
 * At last the tree is removed and all the object are deleted one-by-one.
 * Each Insetrtion and deletion done in a separate transaction, so the
 * commit time is included in the measurements.
 */

#include <platform.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
//#include <mcoHA.h>
#include "perf2.h"

/* Make sure you've got this 16M, otherwise you'll be measuring
 * the performance of your disk.
 */
#define DBSIZE      ( 1024 * 16000 )
#ifndef MCO_PLATFORM_X64
    #define PAGESIZE    128
#else 
    #define PAGESIZE    256
#endif 

const int MAP_ADDRESS = 0x20000000;

/* If you change the number of objects inserted, make sure that you
 * first have enough memory (DBSIZE), and also decalred hash table
 * size appropriatelly (hkey[estimated_numeber_of_entries] in perf2.mco
 */
const int nRecords = 100000;

void _SH_(void)
{

    char text[] = 
    {
        "\nThis test allows to receive some results about the eXtremeDB\n"
            "performance for all basic operations. This test inserts N objects\n"
            "into a class, creating a hash index as it does insertions; then\n"
            "separatelly builds a tree index,performs searches using a tree and\n"
            "a hash table, an a sequential search.At last the tree is removed\n"
            "and all the object are deleted one-by-one. Each insertion and deletion\n"
            "done in a separate transaction, so the commit time is included in the\n""measurements.\n"
    };
    char text1[] = 
    {
        "Copyright (c) 2001-2007 McObject LLC. All Right Reserved.\n\n"
    };

    printf("%s\neXtremeDB runtime version %d.%d, build %d\n%s\n\nPress Enter to start", text, MCO_COMP_VER_MAJOR,
           MCO_COMP_VER_MINOR, MCO_COMP_BUILD_NUM, text1);
    getchar();

}

static void errhandler(int n)
{
    printf("\neXtremeDB runtime fatal error: %d", n);
    getchar();
    exit( - 1);
}


int main(void)
{
    const char* dbName = "perf2";
    time_t start_time;
    MCO_RET rc;
    mco_db_h db = 0;
    mco_trans_h t;
    int i;
    long n = 0;
    Record rec;
    mco_cursor_t c;
    uint4 key = 1999;
    void* start_mem;
    mco_runtime_info_t info;

    _SH_();

    mco_get_runtime_info(&info);
    if (info.mco_shm_supported)
    {
        start_mem = (void*)MAP_ADDRESS;
    }
    else
    {
        start_mem = (void*)malloc(DBSIZE);
        if (!start_mem)
        {
            printf("Couldn't allocated memory\n");
            exit(1);
        }
    };

    mco_error_set_handler(&errhandler);

    rc = mco_runtime_start();
    rc = mco_db_open(dbName, perf2_get_dictionary(), start_mem, DBSIZE, (uint2)PAGESIZE);
    if (rc)
    {
        printf("\nerror %d creating database", rc);
        if (!info.mco_shm_supported)
        {
            free(start_mem);
        }
        exit(1);
    }

    /* connect to the database, obtain a database handle */
    mco_db_connect(dbName, &db);

    /* insert Records, don't create the tree index yet
     */

    printf("Insert ");
    Sleep(20);
    start_time = msec();
    for (i = 0; i < nRecords; i++)
    {
        key = (3141592621u* i + 2718281829u) % 1000000007u;
        rc = mco_trans_start(db, MCO_READ_WRITE, MCO_TRANS_FOREGROUND, &t);
        if (MCO_S_OK != rc)
        {
            exit(1);
        }
        rc = Record_new(t, &rec);
        Record_key_put(&rec, key);

        rc = mco_trans_commit(t);
        if (!rc)
        {
            n++;
        }
        if (i % (nRecords / 10) == 0)
        {
            printf(".");
        }

    }

    printf(" %d objects: %d milliseconds,(%d microsecs/object)\n", n, (int)(msec() - start_time), ((msec() - start_time)
           * 1000) / n);

    /* create the tree index */
    Sleep(20);
    rc = mco_trans_start(db, MCO_READ_WRITE, MCO_TRANS_FOREGROUND, &t);
    if (MCO_S_OK != rc)
    {
        if (!info.mco_shm_supported)
        {
            free(start_mem);
        }
        exit(1);
    };
    printf("Creating tree ...... ");
    start_time = msec();
    rc = Record_tkey_create(t);
    mco_trans_commit(t);

    if (rc == MCO_S_OK)
    {
        printf(" %d objects: %d milliseconds (%d microsecs/object)\n", nRecords, (int)(msec() - start_time), ((msec() -
               start_time)* 1000) / nRecords);
    }
    else
    {
        printf("Unable to create voluntary index. Error code %d\n", rc);
    };

    /* hash search */
    Sleep(20);
    rc = mco_trans_start(db, MCO_READ_ONLY, MCO_TRANS_FOREGROUND, &t);
    if (MCO_S_OK != rc)
    {
        if (!info.mco_shm_supported)
        {
            free(start_mem);
        }
        exit(1);
    };

    printf("Hash search ");
    start_time = msec();
    for (i = 0; i < nRecords; i++)
    {
        key = (3141592621u* i + 2718281829u) % 1000000007u;
        rc = Record_hkey_find(t, key, &rec);
        if (i % (nRecords / 10) == 0)
        {
            printf(".");
        }
    }
    printf("% d searches: %d milliseconds (%d microsecs/search)\n", nRecords, (int)(msec() - start_time), ((msec() -
           start_time)* 1000) / nRecords);

    mco_trans_commit(t);


    /* tree search */
    Sleep(20);
    printf("Tree search ");
    start_time = msec();

    rc = mco_trans_start(db, MCO_READ_ONLY, MCO_TRANS_FOREGROUND, &t);

    rc = Record_tkey_index_cursor(t, &c);

    if (rc == MCO_S_OK)
    {

        for (i = 0; i < nRecords; i++)
        {
            key = (3141592621u* i + 2718281829u) % 1000000007u;
            Record_tkey_search(t, &c, MCO_EQ, key);
            if (i % (nRecords / 10) == 0)
            {
                printf(".");
            }

        }

        printf(" %d searches: %d milliseconds (%d microsecs/search)\n", nRecords, (int)(msec() - start_time), ((msec() 
               - start_time)* 1000) / nRecords);
    }
    else
    {
        printf("Unable to open a cursor on voluntary index. Error code %d\n", rc);
    }
    mco_trans_commit(t);

    /* cursor movements */
    Sleep(20);
    printf("Sequential ");
    start_time = msec();
    rc = mco_trans_start(db, MCO_READ_ONLY, MCO_TRANS_FOREGROUND, &t);

    rc = Record_tkey_index_cursor(t, &c);

    if (rc == MCO_S_OK)
    {
        for (n = 0, rc = mco_cursor_first(t, &c); rc == MCO_S_OK; rc = mco_cursor_next(t, &c))
        {
            if (n % (nRecords / 10) == 0)
            {
                printf(".");
            }
            n++;
        }
        printf(" %d searches: %d milliseconds (%d microsecs/search)\n", n, (int)(msec() - start_time), ((msec() -
               start_time)* 1000) / n);
    }
    else
    {
        printf("Unable to open a cursor on voluntary index. Error code %d\n", rc);
    }
    mco_trans_commit(t);

    /* removing the tree */
    rc = mco_trans_start(db, MCO_READ_WRITE, MCO_TRANS_FOREGROUND, &t);
    if (MCO_S_OK != rc)
    {
        if (!info.mco_shm_supported)
        {
            free(start_mem);
        }
        exit(1);
    };

    printf("Removing the tree ...... ");
    start_time = msec();
    rc = Record_tkey_drop(t);
    mco_trans_commit(t);

    if (rc == MCO_S_OK)
    {
        printf(" %d milliseconds\n", (int)(msec() - start_time));
    }
    else
    {
        printf("Unable to drop a voluntary index. Error code %d\n", rc);
    }

    /* Search using hash index and remove the object ones found
     */
    printf("Search/delete ");

    start_time = msec();
    for (n = 0, i = 0; i < nRecords; i++)
    {
        key = (3141592621u* i + 2718281829u) % 1000000007u;
        rc = mco_trans_start(db, MCO_READ_WRITE, MCO_TRANS_FOREGROUND, &t);
        if (MCO_S_OK != rc)
        {
            exit(1);
        }

        rc = Record_hkey_find(t, key, &rec);

        if (rc == MCO_S_OK)
        {
            rc = Record_delete(&rec);
        }
        else
        {
            break;
        }

        rc = mco_trans_commit(t);
        if (!rc)
        {
            n++;
        }
        if (n % (nRecords / 10) == 0)
        {
            printf(".");
        }
    }
    printf(" %d objects: %d milliseconds (%d microsecs/object)\n", n, (int)(msec() - start_time), ((msec() - start_time)
           * 1000) / n);

    /* disconnect from the database, db is no longer valid */
    mco_db_disconnect(db);

    /* destroy the database */
    mco_db_close(dbName);
    mco_runtime_stop();

    if (!info.mco_shm_supported)
    {
        free(start_mem);
    }

    printf("\nPress Enter to exit");
    getchar();
    PROG_EXIT(0);
}