On Sat, 16 Apr 2011, Anders Gidenstam wrote:
> My failed attempt to unlink the particle systems might provide some insight
> into that issue. The attempt is broken because the
> methods calls
> if (!Particles::getCommonRoot()->removeChild(item)) {
> or
> if (!Particles::getCommonGeode()->removeDrawable(item)) {
> can get called while another OSG thread traverses or inserts into the vector
> of children to the common root/geod.
Hmm.. I should have added that I looked at this in early September last
year so it is not fresh in my memory.
IIRC the current code already does the fundamentaly unsafe operation of
adding items to a STL vector (in the loader thread) while concurrent
traversals of the same vector are possible (by various parts of OSG
rendering). That is NOT SAFE but a lot less risky than deleting from an
STL vector with concurrent traversal (consider the most likely internal
representation of a STL vector to see why).
Cheers,
Anders
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