MINCORE(2) BSD System Calls Manual MINCORE(2)
mincore -- determine residency of memory pages
mincore(caddr_t addr, size_t len, char *vec);
The mincore() system call allows a process to obtain information about
whether pages are core resident. Here the current core residency of the
pages is returned in the character array vec, with a value of 1 meaning
that the page is in-core.
Upon successful completion, a value of 0 is returned. Otherwise, a value
of -1 is returned and errno is set to indicate the error.
madvise(2), minherit(2), mlock(2), mprotect(2), msync(2), munmap(2)
The mincore() function first appeared in 4.4BSD.
BSD June 9, 1993 BSD