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mincore (2)
  • >> mincore (2) ( Solaris man: Системные вызовы )
  • mincore (2) ( FreeBSD man: Системные вызовы )
  • mincore (2) ( Русские man: Системные вызовы )
  • mincore (2) ( Linux man: Системные вызовы )
  •  

    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of a page can change between the time mincore() checks and returns the information, returned information might be outdated. 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)


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    ERRORS
    SEE ALSO


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