Mac Developer Library Developer
Search

 

This manual page is part of Xcode Tools version 5.0

To obtain these tools:

If you are running a version of Xcode Tools other than 5.0, view the documentation locally:

  • In Xcode

  • In Terminal, using the man(1) command

Reading manual pages

Manual pages are intended as a quick reference for people who already understand a technology.

  • To learn how the manual is organized or to learn about command syntax, read the manual page for manpages(5).

  • For more information about this technology, look for other documentation in the Apple Developer Library.

  • For general information about writing shell scripts, read Shell Scripting Primer.




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

Reporting Problems

The way to report a problem with this manual page depends on the type of problem:

Content errors
Report errors in the content of this documentation with the feedback links below.
Bug reports
Report bugs in the functionality of the described tool or API through Bug Reporter.
Formatting problems
Report formatting mistakes in the online version of these pages with the feedback links below.

Feedback