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/*
* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2022 SAP SE. All rights reserved.ights 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 MHIntrinsicAllocFailureTest
* @bug 8295724
* @requires vm.compMode == "Xmixed"
* @requires vm.opt.TieredCompilation == null | vm.opt.TieredCompilation == true
* @requires vm.opt.TieredStopAtLevel == null | vm.opt.TieredStopAtLevel == 4
* @summary test allocation failure of method handle intrinsic in profiled/non-profiled space
* @library /test/lib
* @modules java.base/jdk.internal.misc
* java.management
*
* @build jdk.test.whitebox.WhiteBox
* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
* -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::*
* -XX:ReservedCodeCacheSize=16m -XX:+SegmentedCodeCache
* compiler.codecache.MHIntrinsicAllocFailureTest
*/
package compiler.codecache;
import jdk.test.lib.Asserts;
import jdk.test.whitebox.WhiteBox;
import jdk.test.whitebox.code.BlobType;
import java.lang.management.MemoryPoolMXBean;
public class MHIntrinsicAllocFailureTest {
private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
private interface TestInterface {
int testMethod(int a, int b, Object c);
}
private static void fillCodeCacheSegment(BlobType type) {
// Fill with large blobs.
MemoryPoolMXBean bean = type.getMemoryPool();
int size = (int) (bean.getUsage().getMax() >> 7);
while (WHITE_BOX.allocateCodeBlob(size, type.id) != 0) {}
// Fill rest with minimal blobs.
while (WHITE_BOX.allocateCodeBlob(1, type.id) != 0) {}
}
public static void main(String[] args) {
// Lock compilation to be able to better control code cache space
WHITE_BOX.lockCompilation();
fillCodeCacheSegment(BlobType.MethodNonProfiled);
fillCodeCacheSegment(BlobType.MethodProfiled);
// JIT compilers should be off, now.
Asserts.assertNotEquals(WHITE_BOX.getCompilationActivityMode(), 1);
System.out.println("Code cache segments for non-profiled and profiled nmethods are full.");
// Generate and use a MH itrinsic. Should not trigger one of the following:
// - VirtualMachineError: Out of space in CodeCache for method handle intrinsic
// - InternalError: java.lang.NoSuchMethodException: no such method:
// java.lang.invoke.MethodHandle.linkToStatic(int,int,Object,MemberName)int/invokeStatic
TestInterface add2ints = (a, b, c) -> a + b;
System.out.println("Result of lambda expression: " + add2ints.testMethod(1, 2, null));
// Let GC check the code cache.
WHITE_BOX.unlockCompilation();
WHITE_BOX.fullGC();
}
}
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