This patch keeps a list of all the cooperatively scheduled contexts that are
linked to a runtime. In places where we need to iterate over all contexts (for
GC, specifically), it iterates over the list.
MozReview-Commit-ID: 3pKJX78f2l0
To run JS in separate cooperative threads, we need to split up per-thread state
from per-runtime state. This patch does that for XPConnect.
MozReview-Commit-ID: 407SlJ7nR6v
This is necessary to allow helper threads to attempt large allocations and recover from fragmentation situations with the LargeAllocationFailureCallback.
MozReview-Commit-ID: AyA3pbXcaYy
--HG--
extra : rebase_source : 7a5feb779b690ec7f123481e76f2390c850dac91
This way we can't end up with a situation in which an ancestor doesn't care about skippability but a descendant does and doesn't get it, because the ancestor just claimed no skippability was needed.
Bug 1263355 changed scopes from JSObjects (which are represented in
the CC graph) to a new kind of GC thing. Many objects can share the
same scope, so they will end up calling the scope trace method
repeatedly, causing cycle collections to become much slower in some
cases.
MozReview-Commit-ID: CFO87zXjwgu
Bill McCloskey
Luke Wagner
Jon Coppeard
Brian Hackett
Boris Zbarsky
Olli Pettay
Till Schneidereit
Andrew McCreight
Andi-Bogdan Postelnicu
Jan de Mooij