Provided by: freebsd-manpages_7.0-2_all
vm_map_find - find a free region within a map, and optionally map a
vm_map_find(vm_map_t map, vm_object_t object, vm_ooffset_t offset,
vm_offset_t *addr, vm_size_t length, boolean_t find_space,
vm_prot_t prot, vm_prot_t max, int cow);
The vm_map_find() function attempts to find a free region in the target
map, with the given length, and will also optionally create a mapping of
The arguments offset, prot, max, and cow are passed unchanged to
vm_map_insert(9) when creating the mapping, if and only if a free region
If object is non-NULL, the reference count on the object must be
incremented by the caller before calling this function to account for the
If find_space is TRUE, the function will call vm_map_findspace(9) to
discover a free region.
This function acquires a lock on map by calling vm_map_lock(9), and holds
it until the function returns.
The search for a free region is defined to be first-fit, from the address
The vm_map_find() function returns KERN_SUCCESS if space for the mapping
could be found and the mapping was successfully created. If space could
not be found in the map, KERN_NO_SPACE will be returned. If the
discovered range turned out to be bogus, KERN_INVALID_ADDRESS will be
vm_map(9), vm_map_findspace(9), vm_map_insert(9), vm_map_lock(9)
This manual page was written by Bruce M Simpson 〈email@example.com〉.