Re: [boost] boost::interprocess

Subject: Re: [boost] boost::interprocess
From: Artyom (artyomtnk_at_[hidden])
Date: 2010-04-09 09:06:30

> 
> How can I synchronize mutlipe read/single write on a file
> available on
> a shared folder ?

See: http://www.boost.org/doc/libs/1_39_0/doc/html/interprocess/synchronization_mechanisms.html#interprocess.synchronization_mechanisms.file_lock

But you should be really careful with API is used for file locking.
I mean if you run on Linux you should be sure you are using fcntl and
you do not share locks between threads etc...

See section  "Caution: Synchronization limitations"

> The multiple read/write need to be synchronized b/w
> different
> processes running on different machine.
> 

But generally speaking this is **bad idea**, shared file systems are not
designed for IPC... Locks over shared file systems tend to be unreliable
and tricky... 

So be very careful with it.

Artyom