NAME

       pmem2_source_from_anon() - creates data source backed by anonymous memory pages

SYNOPSIS

              #include <libpmem2.h>

              int pmem2_source_from_anon(struct pmem2_source **src, size_t size);

DESCRIPTION

       The  pmem2_source_from_anon()  function  instantiates  a  new  struct  pmem2_source object
       describing an anonymous data source.  Mappings created using this function are not  backed
       by any file and are zero-initialized.

       The size argument for the function defines the length in bytes of the anonymous source, as
       returned by pmem2_source_size(3).  The application should set  this  value  so  that  it's
       greater than or equal to the size of any mapping created with the anonymous source.

       The offset value for mapping is ignored.

RETURN VALUE

       The  pmem2_source_from_anon()  function  returns  0 on success or a negative error code on
       failure.

ERRORS

       The pmem2_source_form_anon() can fail with the following errors:

       • -ENOMEM - in case of insufficient memory to allocate an instance of struct pmem2_source.

SEE ALSO

       errno(3),     pmem2_config_set_length(3),     pmem2_map_new(3),      pmem2_source_size(3),
       pmem2_config_set_length(3), libpmem2(7) and <https://pmem.io>