MINCORE(2) | System Calls Manual | MINCORE(2) |
mincore
—
#include <sys/mman.h>
int
mincore
(void
*addr, size_t len,
char *vec);
mincore
() system call allows a process to obtain
information about whether pages are core resident. The status of the memory
range is returned in the character-per-page array vec.
If the page is resident, the least significant bit of the corresponding
character in vec will be set. Other bits are reserved
for additional information which future implementations may return.
Note that the status of each page may change between the call to
mincore
() and the return of the page status
information. In order to guarantee that pages will remain in core, the
address range must be locked with
mlock(2).
mincore
() returns 0 on success, or -1 on failure and
sets the variable errno to indicate the error.
mincore
() call will fail if:
mincore
() function first appeared in
4.4BSD.
June 6, 1999 | NetBSD 9.0 |