/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package art;
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import java.util.Arrays;
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public class Test927 {
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public static void run() throws Exception {
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doTest();
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}
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private static void doTest() {
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int all1 = Runtime.getRuntime().availableProcessors();
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int all2 = getAvailableProcessors();
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if (all1 != all2) {
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throw new RuntimeException("Available processors doesn't match: " + all1 + " vs " + all2);
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}
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System.out.println("availableProcessors OK");
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Object info[] = getTimerInfo();
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System.out.println(Arrays.toString(info));
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// getTime checks.
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// Note: there isn't really much to check independent from the implementation. So we check
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// a few details of the ART implementation. This may fail on other runtimes.
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long time1 = getTime();
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long time2 = getTime();
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// Under normal circumstances, time1 <= time2.
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if (time2 < time1) {
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throw new RuntimeException("Time unexpectedly decreased: " + time1 + " vs " + time2);
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}
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long time3 = System.nanoTime();
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long time4 = getTime();
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final long MINUTE = 60l * 1000 * 1000 * 1000;
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if (time4 < time3 || (time4 - time3 > MINUTE)) {
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throw new RuntimeException("Time unexpectedly divergent: " + time3 + " vs " + time4);
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}
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System.out.println("Time OK");
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}
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private static native int getAvailableProcessors();
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private static native Object[] getTimerInfo();
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private static native long getTime();
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}
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