On Tue, Mar 13, 2012 at 1:17 PM, Gerd Hoffmann <kra...@redhat.com> wrote: > Hi, > >> If you want to do it as part of the QEMU codebase then a thread is >> probably the best way - it avoids the troubles of forking a >> multithreaded program and letting go of resources (guest memory, file >> descriptors) that aren't needed across fork. > > That pretty much requires async monitor command support though, so the > iothread can continue driving guest i/o while the new worker thread > scales/compresses/writes the screendump.
The most practical first step would be simply sending the ppm over a socket from ppm_save(). The 'screendump' command today already blocks so no new badness is being added. There would be no threads or fancy image encoding. Stefan
