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Annotation of researchv10dc/cmd/worm/scsi/generic/readt.c, revision 1.1

1.1     ! root        1: #include       <stdio.h>
        !             2: #include       "../scsi.h"
        !             3: #include       "../scsish.h"
        !             4: #include       "../tcl.h"
        !             5: #include       "fns.h"
        !             6: 
        !             7: int
        !             8: gen_readt(ClientData cd, Tcl_Interp *it, int argc, char **argv)
        !             9: {
        !            10:        struct scsi_cmd cmd;
        !            11:        struct scsi_return ret;
        !            12:        int unit, i;
        !            13:        unsigned long ns, ss;
        !            14:        long bs, addr;
        !            15:        long t1, t2;
        !            16:        int count;
        !            17: 
        !            18:        if(argc < 3)
        !            19:                USAGE_RETURN
        !            20:        addr = atol(argv[1]);
        !            21:        count = atol(argv[2]);
        !            22:        unit = (argc >= 3)? atoi(argv[3]):0;
        !            23:        set10(cmd, 0x25, unit<<5, 0, 0, 0, 0, 0, 0, 0, 0);
        !            24:        if(s_io(0, &cmd, 0, &ret, 8, cd->err))
        !            25:                ERR_RETURN
        !            26:        ns = longat(&ret.data[0]);
        !            27:        ss = longat(&ret.data[4]);
        !            28:        bs = ss? sizeof(ret.data)/ss : 1;
        !            29:        time(&t1);
        !            30:        srand(t1);
        !            31:        printf("read(%d,%d): %d blocks @%d (bs=%dB, %d sectors),", s_id, unit, count, addr, bs*ss, bs);
        !            32:        fflush(stdout);
        !            33:        time(&t1);
        !            34:        for(i = count; i > 0; i -= bs){
        !            35:                set10(cmd, 0x28, unit<<5, addr>>24, addr>>16, addr>>8, addr,
        !            36:                        0, 0, bs*0, 0);
        !            37:                if(s_io(0, &cmd, 0, &ret, bs*ss, cd->err))
        !            38:                        ERR_RETURN
        !            39:                addr += bs;
        !            40:        }
        !            41:        time(&t2);
        !            42:        printf(" t=%ds (%.0fKB/s)\n", t2-t1, (count*(float)ss/1024.)/((t1 == t2)? 1:t2-t1));
        !            43:        return(0);
        !            44: }

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