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30fda09a95
Previously this just turned the rw_lock into the equivalent of a recursive_lock, which meant that reader vs. writer assertions were of no use. Now, we have a per-thread static array which stores the held read locks, allowing ASSERT_READ_LOCKED_RW_LOCK to work properly, and allowing multiple readers to be active at a time. This probably should still remain disabled even on nightly builds, but at least it's much more useful as a debugging tool than it was beforehand. Change-Id: I386b2bc2ada8df42f4ab11a05563ef22af58e77f