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