text: /*
   * DummyWorkload.actor.cpp
   *
   * This source file is part of the FoundationDB open source project
   *
   * Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #include "fdbserver/workloads/workloads.actor.h"
  #include "flow/actorcompiler.h"  // This must be the last #include.
  
  // The workload that do nothing. It can be used for waiting for quiescence
  struct DummyWorkload : TestWorkload {
  	bool displayWorkers;
  	double displayDelay;
  
  	DummyWorkload(WorkloadContext const& wcx)
  	: TestWorkload(wcx) {
  		displayWorkers = getOption(options, LiteralStringRef("displayWorkers"), true);
  		displayDelay = getOption(options, LiteralStringRef("displayDelay"), 0.0);
  	}
  
  	virtual std::string description() {
  		return "DummyWorkload";
  	}
  
  	virtual Future<Void> start(Database const& cx) {
  		if ((clientId == 0) && (displayWorkers)) {
  			return _start(this, cx);
  		}
  		return Void();
  	}
  
  	ACTOR static Future<Void> _start( DummyWorkload* self, Database cx) {
  		if (self->displayDelay > 0.0)
  			wait(delay(self->displayDelay));
  		g_simulator.displayWorkers();
  		return Void();
  	}
  
  	virtual Future<bool> check(Database const& cx) {
  		return true;
  	}
  
  	virtual void getMetrics(vector<PerfMetric>& m) {
  	}
  };
  
  WorkloadFactory<DummyWorkload> DummyWorkloadFactory("DummyWorkload");
  