32ac72c3d3
Co-authored-by: Maurizio Cimadamore <mcimadamore@openjdk.org> Co-authored-by: Jorn Vernee <jvernee@openjdk.org> Co-authored-by: Per Minborg <pminborg@openjdk.org> Reviewed-by: dholmes, psandoz, mcimadamore, alanb
108 lines
3.7 KiB
Java
108 lines
3.7 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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/*
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* @test id=default_gc
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* @bug 8277602
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* @library /test/lib
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* @library ../
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* @build jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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*
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* @run main/othervm
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* -Xbootclasspath/a:.
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* -XX:+UnlockDiagnosticVMOptions
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* -XX:+WhiteBoxAPI
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* --enable-native-access=ALL-UNNAMED
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* -Xbatch
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* TestUpcallDeopt
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*/
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import java.lang.foreign.Arena;
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import java.lang.foreign.Linker;
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import java.lang.foreign.FunctionDescriptor;
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import java.lang.foreign.MemorySegment;
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import java.lang.invoke.MethodHandle;
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import java.lang.invoke.MethodType;
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import java.lang.ref.Reference;
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import jdk.test.whitebox.WhiteBox;
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import static java.lang.invoke.MethodHandles.lookup;
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public class TestUpcallDeopt extends NativeTestHelper {
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static final WhiteBox WB = WhiteBox.getWhiteBox();
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static final Linker linker = Linker.nativeLinker();
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static final MethodHandle MH_foo;
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static final MethodHandle MH_m;
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static {
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try {
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System.loadLibrary("UpcallDeopt");
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MH_foo = linker.downcallHandle(
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findNativeOrThrow("foo"),
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FunctionDescriptor.ofVoid(C_POINTER, C_INT, C_INT, C_INT, C_INT));
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MH_m = lookup().findStatic(TestUpcallDeopt.class, "m",
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MethodType.methodType(void.class, int.class, int.class, int.class, int.class));
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} catch (ReflectiveOperationException e) {
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throw new RuntimeException(e);
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}
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}
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static boolean armed;
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// we need to deoptimize through an uncommon trap in the callee of the optimized upcall stub
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// that is created when calling upcallStub below
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public static void main(String[] args) throws Throwable {
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try (Arena arena = Arena.ofConfined()) {
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MemorySegment stub = linker.upcallStub(MH_m, FunctionDescriptor.ofVoid(C_INT, C_INT, C_INT, C_INT), arena);
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armed = false;
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for (int i = 0; i < 20_000; i++) {
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payload(stub); // warmup
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}
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armed = true;
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payload(stub); // test
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}
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}
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static void payload(MemorySegment cb) throws Throwable {
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MH_foo.invokeExact(cb, 0, 1, 2, 3);
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Reference.reachabilityFence(cb); // keep oop alive across call
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}
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// Takes a bunch of arguments, even though unused, to test
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// if the caller's frame is extended enough to spill these arguments.
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static void m(int a0, int a1, int a2, int a3) {
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if (armed) {
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// Trigger uncommon trap from this frame
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WB.verifyFrames(/*log=*/true, /*updateRegisterMap=*/true);
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WB.verifyFrames(/*log=*/true, /*updateRegisterMap=*/false); // triggers different code paths
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}
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}
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}
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