/*
 * 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@gmx.at)
 */
package org.jenetics.engine;

import static java.util.Objects.requireNonNull;

import java.time.Clock;
import java.time.Duration;
import java.time.Instant;
import java.util.function.Predicate;

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

	private final Duration _duration;
	private final Clock _clock;

	private Instant _start = Instant.MIN;

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

	@Override
	public boolean test(final Object ignore) {
		if (_start == Instant.MIN) {
			_start = _clock.instant();
		}

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

}

@@ -890,16 +890,68 @@
 nstant;%0A
+import java.util.concurrent.atomic.AtomicReference;%0A
 import j
@@ -1092,19 +1092,29 @@
 version 
-3.1
+!__version__!
 %0A */%0Afin
@@ -1248,23 +1248,46 @@
 private 
+final AtomicReference%3C
 Instant
+%3E
  _start 
@@ -1288,27 +1288,39 @@
 start = 
-Instant.MIN
+new AtomicReference%3C%3E()
 ;%0A%0A%09Exec
@@ -1519,45 +1519,28 @@
 %7B%0A%09%09
-if (_start == Instant.MIN) %7B%0A%09%09%09_star
+final Instant instan
 t = 
@@ -1559,17 +1559,52 @@
 nt();%0A%09%09
-%7D
+_start.compareAndSet(null, instant);
 %0A%0A%09%09retu
@@ -1613,16 +1613,22 @@
  _start.
+get().
 plus(_du
@@ -1643,32 +1643,23 @@
 isAfter(
-_clock.
 instant
-()
 );%0A%09%7D%0A%0A%7D

Make truncation predicate thread-safe.