/*
 * Java Genetic Algorithm Library (@__identifier__@).
 * Copyright (c) @__year__@ Franz Wilhelmstötter
 *
 * 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.
 *
 * Author:
 *    Franz Wilhelmstötter (franz.wilhelmstoetter@gmail.com)
 */
package io.jenetics.engine;

import static java.util.Objects.requireNonNull;

import java.time.Duration;
import java.time.Instant;
import java.time.InstantSource;
import java.util.concurrent.atomic.AtomicReference;
import java.util.function.Predicate;

/**
 * @author <a href="mailto:franz.wilhelmstoetter@gmail.com">Franz Wilhelmstötter</a>
 * @since 3.1
 * @version 3.9
 */
final class ExecutionTimeLimit implements Predicate<Object>  {

	private final Duration _duration;
	private final InstantSource _clock;

	private final AtomicReference<Instant> _start = new AtomicReference<>();

	ExecutionTimeLimit(final Duration duration, final InstantSource clock) {
		_duration = requireNonNull(duration);
		_clock = requireNonNull(clock);
	}

	@Override
	public boolean test(final Object ignore) {
		final Instant instant = _clock.instant();
		_start.compareAndSet(null, instant);

		return _start.get().plus(_duration).isAfter(instant);
	}

}
