Hans and Iohannes,
The following is FYI.
Several months ago I integrated the close all patches before quitting patch in pd-l2ork and since then I've been experiencing extremely sporadic crashes on close that would hang pd-l2ork. Now, I am not sure this is because of architectural differences between regular pd and pd-l2ork but I doubt it since most of the said components are very similar if not identical.
The bottom line is this only occurs on very low-powered machines (e.g. netbook) and relatively large patches and even then it does so very sporadically. Consequently, I implemented an improvement to the closing mechanism that consists of 2 additional steps and apparently alleviates said problems entirely:
- disable further redraws (this prevents calling functions that may be
referencing null pointers)--I have a special global var for this which is also being used to optimize redrawing (many actions in pd-l2ork are several times faster than regular pd as a result of this implementation--just look for do_not_redraw call in the source if curious)
- suspend dsp before going through the patches (all sub-patches try to
suspend it and resume it but for some reason, due to asynchronous nature of communication between tcl and c funny things occasionally happen on low-powered machines, so this way we ensure it is entirely off throughout the whole destruction process)
Hope this helps!
Ivica Ico Bukvic, D.M.A. Composition, Music Technology Director, DISIS Interactive Sound & Intermedia Studio Director, L2Ork Linux Laptop Orchestra Head, ICAT IMPACT Studio Virginia Tech Dept. of Music - 0240 Blacksburg, VA 24061 (540) 231-6139 (540) 231-5034 (fax) ico@vt.edu http://www.music.vt.edu/faculty/bukvic/