Cannot use managed_mapped_file to handle a txt file

[chmodexplorer@…]

On Windows or Linux, we can map a txt file into the current process' address space, and then use those string handling functions with the return value (the pointer to the first byte of the content of the txt file) to deal with the file. So I wrote such an expression: boost::interprocess::managed_mapped_file mmf(

boost::interprocess::open_only, txt_file_name

); But it throwed an exception when the line 424 in the file managed_open_or_create_impl.hpp was executed:

if(value != InitializedSegment)

throw interprocess_exception(error_info(corrupted_error));

[Ion Gaztañaga]

You are using the wrong class. Managed_mapped_file is for files created with this class. To simply map a txt use file_mapping + mapped_region.