Re: [Boost-users] [Interprocess] [file_mapping] is there any way to avoid writing a modified file to disc?

El 07/12/2011 14:44, Dean Michael Berris escribió:

Actually, I just checked the docs: it seems you want the 'copy_on_write' mode which combines PROT_WRITE|PROT_READ and MAP_PRIVATE. This allows you to make changes in place to the memory region without having the changes reflected to the original file.

Yes, copy_on_write should work. When a page is modified the OS creates a new page for you but other process sees your changes (well, I guess they can end in the page file). Best, Ion