236 lines
9.1 KiB
Java
236 lines
9.1 KiB
Java
/*
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* Copyright (c) 2015, 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
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* @bug 8136421
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* @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9") & os.arch != "aarch64"
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* @library / /testlibrary /../../test/lib
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* @compile ../common/CompilerToVMHelper.java
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* @run main ClassFileInstaller
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* jdk.vm.ci.hotspot.CompilerToVMHelper
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockExperimentalVMOptions
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* -XX:+EnableJVMCI compiler.jvmci.compilerToVM.GetNextStackFrameTest
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*/
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package compiler.jvmci.compilerToVM;
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import compiler.jvmci.common.CTVMUtilities;
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import java.lang.reflect.Method;
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import jdk.vm.ci.hotspot.CompilerToVM;
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import jdk.vm.ci.hotspot.CompilerToVMHelper;
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import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethodImpl;
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import jdk.vm.ci.hotspot.HotSpotStackFrameReference;
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import jdk.test.lib.Asserts;
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public class GetNextStackFrameTest {
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private static final int RECURSION_AMOUNT = 3;
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private static final HotSpotResolvedJavaMethodImpl REC_FRAME_METHOD;
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private static final HotSpotResolvedJavaMethodImpl FRAME1_METHOD;
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private static final HotSpotResolvedJavaMethodImpl FRAME2_METHOD;
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private static final HotSpotResolvedJavaMethodImpl FRAME3_METHOD;
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private static final HotSpotResolvedJavaMethodImpl FRAME4_METHOD;
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private static final HotSpotResolvedJavaMethodImpl RUN_METHOD;
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static {
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Method method;
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try {
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Class<?> aClass = GetNextStackFrameTest.class;
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method = aClass.getDeclaredMethod("recursiveFrame", int.class);
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REC_FRAME_METHOD = CTVMUtilities.getResolvedMethod(method);
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method = aClass.getDeclaredMethod("frame1");
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FRAME1_METHOD = CTVMUtilities.getResolvedMethod(method);
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method = aClass.getDeclaredMethod("frame2");
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FRAME2_METHOD = CTVMUtilities.getResolvedMethod(method);
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method = aClass.getDeclaredMethod("frame3");
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FRAME3_METHOD = CTVMUtilities.getResolvedMethod(method);
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method = aClass.getDeclaredMethod("frame4");
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FRAME4_METHOD = CTVMUtilities.getResolvedMethod(method);
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method = Thread.class.getDeclaredMethod("run");
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RUN_METHOD = CTVMUtilities.getResolvedMethod(Thread.class, method);
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} catch (NoSuchMethodException e) {
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throw new Error("TEST BUG: can't find a test method", e);
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}
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}
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public static void main(String[] args) {
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new GetNextStackFrameTest().test();
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}
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private void test() {
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// Create new thread to get new clean stack
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Thread thread = new Thread(() -> recursiveFrame(RECURSION_AMOUNT));
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thread.start();
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try {
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thread.join();
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} catch (InterruptedException e) {
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throw new Error("Interrupted while waiting to join", e);
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}
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}
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// Helper methods for a longer stack
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private void recursiveFrame(int recursionAmount) {
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if (--recursionAmount != 0) {
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recursiveFrame(recursionAmount);
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} else {
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frame1();
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}
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}
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private void frame1() {
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frame2();
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}
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private void frame2() {
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frame3();
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}
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private void frame3() {
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frame4();
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}
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private void frame4() {
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check();
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}
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private void check() {
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findFirst();
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walkThrough();
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skipAll();
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findNextSkipped();
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findYourself();
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}
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/**
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* Finds the first topmost frame from the list of methods to search
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*/
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private void findFirst() {
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checkNextFrameFor(null /* topmost frame */,
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new HotSpotResolvedJavaMethodImpl[]
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{FRAME2_METHOD, FRAME3_METHOD, FRAME4_METHOD},
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FRAME4_METHOD, 0);
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}
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/**
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* Walks through whole stack and checks that every frame could be found
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* while going down the stack till the end
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*/
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private void walkThrough() {
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// Check that we would get a frame 4 starting from the topmost frame
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HotSpotStackFrameReference nextStackFrame = checkNextFrameFor(
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null /* topmost frame */,
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new HotSpotResolvedJavaMethodImpl[] {FRAME4_METHOD},
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FRAME4_METHOD, 0);
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// Check that we would get a frame 3 starting from frame 4 when we try
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// to search one of the next two frames
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nextStackFrame = checkNextFrameFor(nextStackFrame,
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new HotSpotResolvedJavaMethodImpl[] {FRAME3_METHOD,
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FRAME2_METHOD},
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FRAME3_METHOD, 0);
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// Check that we would get a frame 1
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nextStackFrame = checkNextFrameFor(nextStackFrame,
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new HotSpotResolvedJavaMethodImpl[] {FRAME1_METHOD},
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FRAME1_METHOD, 0);
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// Check that we would skip (RECURSION_AMOUNT - 1) methods and find a
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// recursionFrame starting from frame 1
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nextStackFrame = checkNextFrameFor(nextStackFrame,
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new HotSpotResolvedJavaMethodImpl[] {REC_FRAME_METHOD},
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REC_FRAME_METHOD, RECURSION_AMOUNT - 1);
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// Check that we would get a Thread::run method frame;
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nextStackFrame = checkNextFrameFor(nextStackFrame,
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new HotSpotResolvedJavaMethodImpl[] {RUN_METHOD},
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RUN_METHOD, 0);
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// Check that there are no more frames after thread's run method
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nextStackFrame = CompilerToVMHelper.getNextStackFrame(nextStackFrame,
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null /* any */, 0);
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Asserts.assertNull(nextStackFrame,
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"Found stack frame after Thread::run");
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}
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/**
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* Skips all frames to get null at the end of the stack
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*/
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private void skipAll() {
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// Skip all frames (stack size) + 2 (getNextStackFrame() itself
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// and from CompilerToVMHelper)
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int initialSkip = Thread.currentThread().getStackTrace().length + 2;
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HotSpotStackFrameReference nextStackFrame = CompilerToVMHelper
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.getNextStackFrame(null /* topmost frame */, null /* any */,
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initialSkip);
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Asserts.assertNull(nextStackFrame, "Unexpected frame");
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}
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/**
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* Search for any frame skipping one frame
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*/
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private void findNextSkipped() {
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// Get frame 4
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HotSpotStackFrameReference nextStackFrame = CompilerToVMHelper
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.getNextStackFrame(null /* topmost frame */,
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new HotSpotResolvedJavaMethodImpl[] {FRAME4_METHOD}, 0);
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// Get frame 2 by skipping one method starting from frame 4
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checkNextFrameFor(nextStackFrame, null /* any */,
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FRAME2_METHOD , 1 /* skip one */);
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}
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/**
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* Finds test method in the stack
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*/
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private void findYourself() {
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Method method;
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try {
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method = CompilerToVM.class.getDeclaredMethod("getNextStackFrame",
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HotSpotStackFrameReference.class,
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HotSpotResolvedJavaMethodImpl[].class, int.class);
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} catch (NoSuchMethodException e) {
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throw new Error("TEST BUG: can't find getNextStackFrame method");
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}
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HotSpotResolvedJavaMethodImpl self
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= CTVMUtilities.getResolvedMethod(CompilerToVM.class, method);
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checkNextFrameFor(null /* topmost frame */, null /* any */, self, 0);
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}
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/**
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* Searches next frame and checks that it equals to expected
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*
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* @param currentFrame start frame to search from
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* @param searchMethods a list of methods to search
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* @param expected expected frame
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* @param skip amount of frames to be skipped
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* @return frame reference
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*/
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private HotSpotStackFrameReference checkNextFrameFor(
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HotSpotStackFrameReference currentFrame,
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HotSpotResolvedJavaMethodImpl[] searchMethods,
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HotSpotResolvedJavaMethodImpl expected,
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int skip) {
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HotSpotStackFrameReference nextStackFrame = CompilerToVMHelper
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.getNextStackFrame(currentFrame, searchMethods, skip);
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Asserts.assertNotNull(nextStackFrame);
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Asserts.assertTrue(nextStackFrame.isMethod(expected),
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"Unexpected next frame: " + nextStackFrame
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+ " from current frame: " + currentFrame);
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return nextStackFrame;
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}
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}
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