minix/test/testcache.h

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/* Common definitions and declarations for the testcache code
* and the testcache clients.
*/
#include <sys/types.h>
#include <machine/vmparam.h>
#define MAXBLOCKS 1500000
#define MAXBLOCKSIZE (4*PAGE_SIZE)
int dowriteblock(int b, int blocksize, u32_t seed, char *block);
int readblock(int b, int blocksize, u32_t seed, char *block);
void testend(void);
int dotest(int blocksize, int nblocks, int iterations);
void cachequiet(int quiet);
void get_fd_offset(int b, int blocksize, u64_t *file_offset, int *fd);
void makefiles(int n);
#define OK_BLOCK_GONE -999
/* for file-oriented tests:
*
* we want to flexibly split tests over multiple files
* - for big working sets we might run over the 2GB MFS file limit
* - we might want to test the FS being able to handle lots of
* files / unusual metadata situations
*/
#define MBPERFILE 2000
#define MB (1024*1024)
#define MAXFILES ((u64_t) MAXBLOCKS * MAXBLOCKSIZE / MB / MBPERFILE + 1)
extern int fds[MAXFILES], bigflag;