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/* COVERAGE: madvise */
#include <stdio.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <linux/limits.h>
#include <unistd.h>
int main(int argc, char *argv[])
{
char *str_for_file = "abcdefghijklmnopqrstuvwxyz12345\n";
char filename[PATH_MAX];
int i, fd;
void *file;
size_t size = 40960;
/* Create a temporary file. */
sprintf(filename, "%s-out.%d", *argv, getpid());
fd = open(filename, O_RDWR | O_CREAT, 0664);
/* Writing 40 KB of data into this file [32 * 1280 = 40960] */
for (i = 0; i < 1280; i++)
write(fd, str_for_file, strlen(str_for_file));
/* Map the input file into memory */
file = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
madvise((void *)-1, size, MADV_NORMAL);
//staptest// madvise (0x[f]+, 40960, MADV_NORMAL) = -NNNN (EINVAL)
/* Ignore return code */
madvise(file, (size_t)-1, MADV_NORMAL);
#if __WORDSIZE == 64
//staptest// madvise (XXXX, 18446744073709551615, MADV_NORMAL) = -NNNN
#else
//staptest// madvise (XXXX, 4294967295, MADV_NORMAL) = -NNNN
#endif
madvise(file, size, -1);
//staptest// madvise (XXXX, 40960, 0xffffffff) = -NNNN (EINVAL)
madvise(file, size, MADV_NORMAL);
//staptest// madvise (XXXX, 40960, MADV_NORMAL) = 0
madvise(file, size, MADV_RANDOM);
//staptest// madvise (XXXX, 40960, MADV_RANDOM) = 0
madvise(file, size, MADV_SEQUENTIAL);
//staptest// madvise (XXXX, 40960, MADV_SEQUENTIAL) = 0
madvise(file, size, MADV_WILLNEED);
//staptest// madvise (XXXX, 40960, MADV_WILLNEED) = 0
madvise(file, size, MADV_DONTNEED);
//staptest// madvise (XXXX, 40960, MADV_DONTNEED) = 0
#ifdef MADV_FREE
/* Ignore return value */
madvise(file, size, MADV_FREE);
//staptest// madvise (XXXX, 40960, MADV_FREE)
#endif
/* Ignore return value */
madvise(file, size, MADV_REMOVE);
//staptest// madvise (XXXX, 40960, MADV_REMOVE)
madvise(file, size, MADV_DONTFORK);
//staptest// madvise (XXXX, 40960, MADV_DONTFORK) = 0
madvise(file, size, MADV_DOFORK);
//staptest// madvise (XXXX, 40960, MADV_DOFORK) = 0
/* NB: the following two can cause alarming kernel messages to appear
in the logs. Ignore these:
[107552.743276] Injecting memory failure for page 7d42f at 55578000
[107552.745627] MCE 0x7d42f: dirty LRU page recovery: Recovered
*/
#ifdef MADV_HWPOISON
/* Ignore return value */
madvise(file, size, MADV_HWPOISON);
//staptest// madvise (XXXX, 40960, MADV_HWPOISON)
#endif
#ifdef MADV_SOFT_OFFLINE
madvise(file, size, MADV_SOFT_OFFLINE);
//staptest// madvise (XXXX, 40960, MADV_SOFT_OFFLINE) = 0
#endif
#ifdef MADV_MERGEABLE
madvise(file, size, MADV_MERGEABLE);
//staptest// madvise (XXXX, 40960, MADV_MERGEABLE) = 0
#endif
#ifdef MADV_UNMERGEABLE
madvise(file, size, MADV_UNMERGEABLE);
//staptest// madvise (XXXX, 40960, MADV_UNMERGEABLE) = 0
#endif
#ifdef MADV_HUGEPAGE
/* Ignore return value */
madvise(file, size, MADV_HUGEPAGE);
//staptest// madvise (XXXX, 40960, MADV_HUGEPAGE)
#endif
#ifdef MADV_NOHUGEPAGE
/* Ignore return value */
madvise(file, size, MADV_NOHUGEPAGE);
//staptest// madvise (XXXX, 40960, MADV_NOHUGEPAGE)
#endif
#ifdef MADV_DONTDUMP
madvise(file, size, MADV_DONTDUMP);
//staptest// madvise (XXXX, 40960, MADV_DONTDUMP) = 0
#endif
#ifdef MADV_DODUMP
madvise(file, size, MADV_DODUMP);
//staptest// madvise (XXXX, 40960, MADV_DODUMP) = 0
#endif
/* Cleanup. */
munmap(file, size);
close(fd);
unlink(filename);
return 0;
}
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