QComObject: relax memory barriers for reference countingHEADdev

the memory barriers of QComObject can be slightly relaxed, which should
improve performance of the reference counting:

* AddRef does not require any memory barriers, we only need to increment
  the reference count.
* Release has a "release" semantics, unless the reference count drops to
zero. In this case we need to acquire to ensure that writes from other
  threads are visible.

Change-Id: I3035416642801a1974bb02f33d58d10513df1988
Reviewed-by: Artem Dyomin <[email protected]>
Reviewed-by: Pavel Dubsky <[email protected]>

0 files changed, 0 insertions, 0 deletions