spewG.c
上传用户:yhdzpy8989
上传日期:2007-06-13
资源大小:13604k
文件大小:1k
- /*
- * ===========================================================================
- * PRODUCTION $Log: spewG.c,v $
- * PRODUCTION Revision 1000.0 2003/10/29 15:46:03 gouriano
- * PRODUCTION PRODUCTION: IMPORTED [ORIGINAL] Dev-tree R1.1
- * PRODUCTION
- * ===========================================================================
- */
- /* spew out a thoroughly gigantic file designed so that bzip2
- can compress it reasonably rapidly. This is to help test
- support for large files (> 2GB) in a reasonable amount of time.
- I suggest you use the undocumented --exponential option to
- bzip2 when compressing the resulting file; this saves a bit of
- time. Note: *don't* bother with --exponential when compressing
- Real Files; it'll just waste a lot of CPU time :-)
- (but is otherwise harmless).
- */
- #define _FILE_OFFSET_BITS 64
- #include <stdio.h>
- #include <stdlib.h>
- /* The number of megabytes of junk to spew out (roughly) */
- #define MEGABYTES 5000
- #define N_BUF 1000000
- char buf[N_BUF];
- int main ( int argc, char** argv )
- {
- int ii, kk, p;
- srandom(1);
- setbuffer ( stdout, buf, N_BUF );
- for (kk = 0; kk < MEGABYTES * 515; kk+=3) {
- p = 25+random()%50;
- for (ii = 0; ii < p; ii++)
- printf ( "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" );
- for (ii = 0; ii < p-1; ii++)
- printf ( "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb" );
- for (ii = 0; ii < p+1; ii++)
- printf ( "ccccccccccccccccccccccccccccccccccccc" );
- }
- fflush(stdout);
- return 0;
- }