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mincore(2) [opensolaris man page]

mincore(2)							   System Calls 							mincore(2)

NAME
mincore - determine residency of memory pages SYNOPSIS
#include <sys/types.h> int mincore(caddr_t addr, size_t len, char *vec); DESCRIPTION
The mincore() function determines the residency of the memory pages in the address space covered by mappings in the range [addr, addr + len]. The status is returned as a character-per-page in the character array referenced by *vec (which the system assumes to be large enough to encompass all the pages in the address range). The least significant bit of each character is set to 1 to indicate that the referenced page is in primary memory, and to 0 to indicate that it is not. The settings of other bits in each character are undefined and may contain other information in future implementations. Because the status of a page can change between the time mincore() checks and returns the information, returned information might be out- dated. Only locked pages are guaranteed to remain in memory; see mlock(3C). RETURN VALUES
Upon successful completion, mincore() returns 0. Otherwise, -1 is returned and errno is set to indicate the error. ERRORS
The mincore() function will fail if: EFAULT The vec argument points to an illegal address. EINVAL The addr argument is not a multiple of the page size as returned by sysconf(3C), or the len argument has a value less than or equal to 0. ENOMEM Addresses in the range [addr, addr + len] are invalid for the address space of a process or specify one or more pages which are not mapped. SEE ALSO
mmap(2), mlock(3C), sysconf(3C) SunOS 5.11 12 Aug 1990 mincore(2)

Check Out this Related Man Page

MINCORE(2)						      BSD System Calls Manual							MINCORE(2)

NAME
mincore -- determine residency of memory pages SYNOPSIS
#include <sys/types.h> #include <sys/mman.h> int mincore(caddr_t addr, size_t len, char *vec); DESCRIPTION
The mincore() system call allows a process to obtain information about whether pages are core resident. The current core residency of the pages is returned in the character array vec. For each entry in the character array vec, the following bit values may be set depending upon the state of the page: MINCORE_INCORE 0x1 /* Page is incore */ MINCORE_REFERENCED 0x2 /* Page has been referenced by us */ MINCORE_MODIFIED 0x4 /* Page has been modified by us */ MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */ MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */ RETURN VALUES
Upon successful completion, a value of 0 is returned. Otherwise, a value of -1 is returned and errno is set to indicate the error. ERRORS
[EINVAL] addr is not a valid address for user mode. [EFAULT] an error occurred trying to copy to the output character array vec. SEE ALSO
madvise(2), minherit(2), mlock(2), mprotect(2), msync(2), munmap(2) HISTORY
The mincore() function first appeared in 4.4BSD. BSD
June 9, 1993 BSD
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