Method addThread

fdbserver/coroimpl/CoroFlow.actor.cpp:222–232

	Future<Void> getError() const override { return pool->anyError.getResult(); }
	void addThread(IThreadPoolReceiver* userData, const char*) override {
		checkError();

		auto w = new Worker(pool.getPtr(), userData);
		pool->queueLock.enter();
		pool->workers.push_back(w);
		pool->queueLock.leave();
		pool->anyError.add(w->error.getFuture());
		pool->allStopped.add(w->stopped.getFuture());
		startWorker(w);
	}
	ACTOR static void startWorker(Worker* w) {
		// We want to make sure that coroutines are always started after Net2::run() is called, so the main coroutine is
		// initialized.