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Annotation of researchv10dc/cmd/worm/oscsi/generic/readt.c, revision 1.1.1.1

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

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