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Loop run waits until pingers finish
This ensures that if somebody passes an event to a loop which has just started executing, then the event gets picked up. Otherwise there is a race condition causing stray events pending in queue but without the ping (because the run actually finishes too fast to pickup the later events).
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@ -1449,6 +1449,17 @@ birdloop_run(void *_loop)
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account_to(&loop->locking);
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birdloop_enter(loop);
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this_birdloop = loop;
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/* Wait until pingers end to wait for all events to actually arrive */
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for (u32 ltt;
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ltt = atomic_load_explicit(&loop->thread_transition, memory_order_acquire);
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)
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{
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ASSERT_DIE(ltt == LTT_PING);
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birdloop_yield();
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}
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/* Now we can actually do some work */
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u64 dif = account_to(&loop->working);
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if (dif > this_thread->max_loop_time_ns)
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