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vm_map_findspace (9)
  • >> vm_map_findspace (9) ( FreeBSD man: Ядро )

  • BSD mandoc
     

    NAME

    
    
    vm_map_findspace
    
     - find a free region within a map
    
     
    

    SYNOPSIS

       #include <sys/param.h>
       #include <vm/vm.h>
       #include <vm/vm_map.h>
    int Fo vm_map_findspace Fa vm_map_t map vm_offset_t start vm_size_t length vm_offset_t *addr Fc  

    DESCRIPTION

    The vm_map_findspace ();
    function attempts to find a region with sufficient space in the Fa map for an object of size Fa length at the address Fa addr .  

    IMPLEMENTATION NOTES

    It is the caller's responsibility to obtain a lock on the Fa map using vm_map_lock9 before calling this function.

    This routine may call pmap_growkernel9 to grow the kernel's address space, if and only if the mapping is being made within the kernel address space, and if insufficient space remains in the kernel_map  

    RETURN VALUES

    The vm_map_findspace ();
    function returns the value 0 if successful, and Fa *addr will contain the first virtual address in the found region; otherwise, the value 1 is returned.  

    SEE ALSO

    pmap_growkernel9, vm_map9, vm_map_entry_resize_free9, vm_map_lock9  

    AUTHORS

    This manual page was written by An Bruce M Simpson Aq bms@spc.org .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    IMPLEMENTATION NOTES
    RETURN VALUES
    SEE ALSO
    AUTHORS


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