Function lockThread

kernels/subdiv/tessellation_cache.h:164–164

   __forceinline size_t lockThread  (ThreadWorkState *const t_state, const ssize_t plus=1) { return t_state->counter.fetch_add(plus);  }
   __forceinline size_t unlockThread(ThreadWorkState *const t_state, const ssize_t plus=-1) { assert(isLocked(t_state)); return t_state->counter.fetch_add(plus); }

   __forceinline bool isLocked(ThreadWorkState *const t_state) { return t_state->counter.load() != 0; }