source: trunk/testcase/1023-maxfilehandles.c@ 1362

/** @file
 *
 * Testcase for bug #1023 autoincrement of file handles.
 *
 * InnoTek Systemberatung GmbH confidential
 *
 * Copyright (c) 2004 InnoTek Systemberatung GmbH
 * Author: knut st. osmundsen <bird-srcspam@anduin.net>
 *
 * All Rights Reserved
 *
 */

/*******************************************************************************
*   Header Files                                                               *
*******************************************************************************/
#define INCL_DOS
#define INCL_DOSINFOSEG
#ifdef __IBMC__
#include "../src/emx/include/os2emx.h"
#else
#include <os2.h>
#endif
#include <stdio.h>
#include <io.h>
#include <fcntl.h>
#include <string.h>



int main(int argc, const char **argv)
{
    int             i,j;
    LONG            lFHDelta = 0;
    ULONG           cFHs = 0;
    ULONG           cFHLast;
    unsigned        msLastInc;
    unsigned        msEnd;
    unsigned        msStart;
    PGINFOSEG       pGIS = GETGINFOSEG();
#define MAX_FHS 10000
#ifdef TEST_STREAMS
    static FILE    *apFiles[MAX_FHS];
#else
    static int      aiFiles[MAX_FHS];
#endif

    DosSetRelMaxFH(&lFHDelta, &cFHs);
    printf("cFHs=%d\n", cFHs);

    cFHLast = cFHs;
    msLastInc = pGIS->msecs;
    for (i = 0; i < MAX_FHS; i++)
    {
        msStart = pGIS->msecs;
#ifdef TEST_STREAMS
        apFiles[i] = fopen(argv[argc - 1], "rb");
#else
        aiFiles[i] = open(argv[argc - 1], O_BINARY | O_RDONLY);
#endif
        msEnd = pGIS->msecs;
#ifdef TEST_STREAMS
        if (apFiles[i] == NULL)
#else
        if (aiFiles[i] < 0)
#endif
        {
            printf("error %d!\n", i + 1);
            break;
        }

        lFHDelta = cFHs = 0;
        DosSetRelMaxFH(&lFHDelta, &cFHs);
        lFHDelta = cFHs = 0;
        DosSetRelMaxFH(&lFHDelta, &cFHs);
        if (cFHs != cFHLast)
        {
            printf("Max FH change %i (fh=%d): %d -> %d (inc: %d ms  since last: %d ms)\n",
                   i + 1,
#ifdef TEST_STREAMS
                   fileno(apFiles[i]),
#else
                   aiFiles[i],
#endif
                   cFHLast, cFHs,
                   msEnd - msStart, msStart - msLastInc);
            msLastInc = msEnd;
        }
        cFHLast = cFHs;
    }

    lFHDelta = cFHs = 0;
    DosSetRelMaxFH(&lFHDelta, &cFHs);
    printf("cFHs=%d\n", cFHs);

    /*
     * Free the files.
     */
    msStart = pGIS->msecs;
    for (j = 0; j < i; j++)
#ifdef TEST_STREAMS
        fclose(apFiles[j]);
#else
        close(aiFiles[j]);
#endif
    msEnd = pGIS->msecs;
    printf("close of %d files took %d ms\n", j, msEnd - msStart);

    /*
     * Report the result.
     */
    if (i < 9900)
    {
        printf("1023-maxfilehandles: failed, could only open %d handles, expected > 9900\n", i);
        return 1;
    }

    printf("1023-maxfilehandles: succeeded opening %d handles.\n", i);
    return 0;
}