Re: [boost] [shmem-interprocess] Shmem 0.93 and update on Interprocess

From: Rene Rivera (grafik.list_at_[hidden])
Date: 2006-06-11 22:11:22

Ion Gaztañaga wrote:

> Update on Interprocess:
> 
> -> Due to Shmem problems with shared memory/named mutex/name semaphore 
> lifetime between POSIX/Windows. I've decided to change Shmem approach 
> (emulation of Windows lifetime behavior in POSIX with reference 
> counting) to a POSIX lifetime (explicit unlinking shared memory).
> 
> This means that I have to rework all main classes to achieve POSIX 
> persistence semantics in Windows even when a process crashes. This will 
> require using memory mapped files to emulate shared memory (with some 
> tricks to avoid performance problems with file-memory synchronization if 
> it's possible). I think that this approach will be much more portable 
> than the Shmem approach.

Well that move makes worries me. The use I currently put 
shmem/interprocess to is for high-speed IPC communications. Could you 
explain what the potential performance impact is with this change.

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