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#include <stdlib.h> |
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#include <stdio.h> |
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#include <malloc.h> |
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|
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main( int argc, char *argv[]) |
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{ |
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int s,mb,q,a; |
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unsigned char *mem,b; |
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|
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if( argc != 2 ) { |
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fprintf(stderr,"usage: p MB\n"); |
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return(1); |
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} |
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s= 1024*1024* (mb=atoi(argv[1])); |
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if (!(mem=malloc(s))) { |
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printf("failed\n"); |
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exit(1); |
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} |
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for (;;) { |
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for (q=0;q<mb;++q) { |
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a=q*1024*1024+ 1+(int)(1024*1024.0*rand()/(RAND_MAX+1.0)) ; |
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b=255*rand()/(RAND_MAX+1.0); |
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mem[a] = b; |
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if( mem[a] != b ) |
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fprintf(stderr,"hopla %x\n", a); |
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} |
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} |
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|
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return(0); |
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|
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} |