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Annotation of os2sdk/demos/examples/setmaxfh/setmaxfh.c, revision 1.1

1.1     ! root        1: /***   SetMaxFH  
        !             2:  *
        !             3:  *     This call sets the maximum number of file handles that may be 
        !             4:  *     opened at one time.  The only indicator you have that the
        !             5:  *     call succeeded is the return code.  There is no call which will
        !             6:  *     check the current maximum so you either use the system default
        !             7:  *     or set your own.  There is also no call to tell you how many of
        !             8:  *     the handles are currently available.  The only way to check 
        !             9:  *     is to use them all up.
        !            10:  *
        !            11:  *     The system default may be increased by using the DOSSETMAXFH
        !            12:  *     call.  It may NOT be decreased.
        !            13:  *
        !            14:  *     This function does NOT work in Family API mode.
        !            15:  *
        !            16:  *     This program increases the file handle limit to 30, or whatever
        !            17:  *     is specified as the first parameter to main(). You can experiment
        !            18:  *     with values less than 20 which should fail because you can't
        !            19:  *     decrease the limit, and really big values which should fail due
        !            20:  *     to system resource limits.
        !            21:  *
        !            22:  *     Copyright (C) Microsoft Corp. 1986
        !            23:  */
        !            24: 
        !            25: #include "doscalls.h"
        !            26: 
        !            27: main(argc, argv)
        !            28: int argc;
        !            29: char *argv[];
        !            30: {
        !            31:        int max_files;
        !            32:        int rc;
        !            33: 
        !            34:        if(argc == 2)
        !            35:                max_files = atoi(argv[1]);
        !            36:        else
        !            37:                max_files = 30;
        !            38: 
        !            39:        rc = DOSSETMAXFH(max_files);
        !            40: 
        !            41:        if(rc == 0)
        !            42:                printf("DOSSETMAXFH(%d) succeeded.\n", max_files);
        !            43:        else
        !            44:                printf("DOSSETMAXFH(%d) failed, error = %d\n", max_files, rc);
        !            45: }

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