[Boost-users] IOStreams: Memory-Mapped files: persistency-question

Subject: [Boost-users] IOStreams: Memory-Mapped files: persistency-question
From: Florian Schwarz (florian.schwarz_at_[hidden])
Date: 2010-02-04 12:04:26

Hello,

I'm using the class mapped_file from boost/iostreams to read and write 
to a file. I stumbled across a persistency-question which I couldn't 
answer from the documentation. When I'm using a normal c++ ofstream, I 
can be sure that after I called flush(), that the data is written to 
disk, even if my program crashes afterwards. But what if I'm using a 
mapped_file, is there any way to ensure that the written data will reach 
the disc, even if my program crashes at some later point?
Thanks a lot for your help in advance.

Best regards
Florian