128 lines
4.8 KiB
Java
128 lines
4.8 KiB
Java
/*
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* Copyright (c) 2021, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 8258077
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* @summary verify multiple release calls on a copied array work when checked
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* @requires vm.flagless
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* @library /test/lib
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* @run main/native TestCheckedReleaseArrayElements launch
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*/
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import java.util.Arrays;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.Utils;
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import jtreg.SkippedException;
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public class TestCheckedReleaseArrayElements {
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static {
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System.loadLibrary("TestCheckedReleaseArrayElements");
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}
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public static void main(String[] args) throws Throwable {
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if (args == null || args.length == 0) {
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test();
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} else {
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// Uses executeProcess() instead of executeTestJava() to avoid passing options
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// that might generate output on stderr (which should be empty for this test).
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ProcessBuilder pb =
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ProcessTools.createLimitedTestJavaProcessBuilder("-Xcheck:jni",
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"--enable-native-access=ALL-UNNAMED",
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"-Djava.library.path=" + Utils.TEST_NATIVE_PATH,
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"TestCheckedReleaseArrayElements");
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OutputAnalyzer output = ProcessTools.executeProcess(pb);
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output.shouldHaveExitValue(0);
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output.stderrShouldBeEmpty();
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output.stdoutShouldNotBeEmpty();
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}
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}
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/*
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* If GetIntArrayElements returns a copy, we update the array in slices
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* calling ReleaseIntArrayElements with JNI_COMMIT to write-back the
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* updates, which are then checked. Finally we use JNI_ABORT to free
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* the copy.
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*/
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public static void test() {
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final int slices = 3;
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final int sliceLength = 3;
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int[] arr = new int[slices * sliceLength];
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if (!init(arr)) {
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throw new SkippedException("Test skipped as GetIntArrayElements did not make a copy");
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}
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System.out.println("Array before: " + Arrays.toString(arr));
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// We fill the array in slices so that arr[i] = i
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for (int i = 0; i < slices; i++) {
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int start = i * sliceLength;
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fill(arr, start, sliceLength);
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System.out.println("Array during: " + Arrays.toString(arr));
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check(arr, (i + 1) * sliceLength);
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}
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System.out.println("Array after: " + Arrays.toString(arr));
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cleanup(arr);
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}
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/*
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* Calls GetIntArrayElements and stashes the native pointer for
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* use by fill() if a copy was made.
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* Returns true if a copy was made else false.
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*/
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static native boolean init(int[] arr);
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/*
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* Fills in target[start] to target[start+count-1], so that
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* target[i] == i. The update is done natively using the raw
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* pointer into the array.
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*/
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static native void fill(int[] target, int start, int count);
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/*
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* Properly release the copied array
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*/
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static native void cleanup(int[] target);
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static void check(int[] source, int count) {
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for (int i = 0; i < count; i++) {
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if (source[i] != i) {
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System.out.println("Failing source array: " + Arrays.toString(source));
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throw new RuntimeException("Expected source[" + i + "] == " +
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i + " but got " + source[i]);
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}
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}
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for (int i = count; i < source.length; i++) {
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if (source[i] != 0) {
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System.out.println("Failing source array: " + Arrays.toString(source));
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throw new RuntimeException("Expected source[" + i +
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"] == 0 but got " + source[i]);
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}
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}
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}
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}
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