Richard Oudkerk added the comment: On 27/03/2013 5:47pm, Charles-François Natali wrote: >> multiprocessing currently only allows sharing of such shared arrays >> using inheritance. > > You mean through fork() COW?
Through fork, yes, but "shared" rather than "copy-on-write". >> Perhaps we need a picklable mmap type which can be sent over pipes >> and queues. (On Unix this would probably require fd passing.) > > If you use POSIX semaphores, you could pass the semaphore path and use > sem_open in the other process (but that would mean you can't unlink it > right after open). I assume you mean "shared memory" and shm_open(), not "semaphores" and sem_open(). I don't think shm_open() really has any advantages over using mmaps backed by "proper" files (since posix shared memeory uses up space in /dev/shm which is limited). By using fd passing you can get the operating system to do ref counting on the mmaps and not worry about when to unlink. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue17560> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
