I've had no crashing problems with separate threads at the C++ plugin level.
If you use the built-in DDImage threading support it should work:
static void server_callback(unsigned index, unsigned threads, void* p) {
static_cast<MyIop*>(p)->check_server();
}
void MyIop::check_server() {
// talk to renderer, get pixels, call update(), delay;
}
void MyIop::_validate(for_real) {
...
...
if (m_interactive && DD::Image::Application::gui && m_server_status <
SERVER_LISTENING) {
m_lock.lock();
if (m_server_status < SERVER_LISTENING) {
Thread::spawn(server_callback, 1, this);
m_thread = Thread::thisThread();
}
m_lock.unlock();
}
}
-jonathan
On Mar 9, 2011, at 9:37 AM, anders langlands wrote:
> I never found a way to update the buffer properly from a separate thread
> without nuke crashing. In the end we just added a button to call asapUpdate()
> from the main thread. It's stable, and it gives TDs something to do while
> they're waiting for renders.
>
> On Wed, Mar 9, 2011 at 5:30 PM, Nicolas DUMAY <[email protected]> wrote:
> Hi all,
>
> I'm working on a Iop that take his infos ( the pixels ) from an
> external renderer.
> My Iop have an internal buffer that I fill with rendered buckets and
> the engine function simply display that buffer.
> I'd like to call ASAPUpdate when a bucket ended but that lead to too
> much call in a few moment and nuke badly segfault. Any idea or
> workaround?
>
> Nicolas
>
> Ps: I already try to put a usleep of 0.1 sec before calling ASAPUpdate
> but this slow my render on simple scene and I'm not sure it's the best
> way of doing it...
>
> Envoyé de mon iPhone
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