--- a/test/hotspot/jtreg/compiler/jvmci/compilerToVM/GetNextStackFrameTest.java Wed Mar 07 13:26:15 2018 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,244 +0,0 @@
-/*
- * Copyright (c) 2015, 2016, 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 8136421
- * @requires vm.jvmci
- * @library / /test/lib
- * @library ../common/patches
- * @modules java.base/jdk.internal.misc
- * @modules java.base/jdk.internal.org.objectweb.asm
- * java.base/jdk.internal.org.objectweb.asm.tree
- * jdk.internal.vm.ci/jdk.vm.ci.hotspot
- * jdk.internal.vm.ci/jdk.vm.ci.code
- * jdk.internal.vm.ci/jdk.vm.ci.meta
- * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper
- * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
- * -Djvmci.Compiler=null
- * compiler.jvmci.compilerToVM.GetNextStackFrameTest
- */
-
-package compiler.jvmci.compilerToVM;
-
-import compiler.jvmci.common.CTVMUtilities;
-import jdk.test.lib.Asserts;
-import jdk.vm.ci.hotspot.CompilerToVMHelper;
-import jdk.vm.ci.hotspot.HotSpotStackFrameReference;
-import jdk.vm.ci.meta.ResolvedJavaMethod;
-
-import java.lang.reflect.Method;
-
-public class GetNextStackFrameTest {
- private static final int RECURSION_AMOUNT = 3;
- private static final ResolvedJavaMethod REC_FRAME_METHOD;
- private static final ResolvedJavaMethod FRAME1_METHOD;
- private static final ResolvedJavaMethod FRAME2_METHOD;
- private static final ResolvedJavaMethod FRAME3_METHOD;
- private static final ResolvedJavaMethod FRAME4_METHOD;
- private static final ResolvedJavaMethod RUN_METHOD;
-
- static {
- Method method;
- try {
- Class<?> aClass = GetNextStackFrameTest.class;
- method = aClass.getDeclaredMethod("recursiveFrame", int.class);
- REC_FRAME_METHOD = CTVMUtilities.getResolvedMethod(method);
- method = aClass.getDeclaredMethod("frame1");
- FRAME1_METHOD = CTVMUtilities.getResolvedMethod(method);
- method = aClass.getDeclaredMethod("frame2");
- FRAME2_METHOD = CTVMUtilities.getResolvedMethod(method);
- method = aClass.getDeclaredMethod("frame3");
- FRAME3_METHOD = CTVMUtilities.getResolvedMethod(method);
- method = aClass.getDeclaredMethod("frame4");
- FRAME4_METHOD = CTVMUtilities.getResolvedMethod(method);
- method = Thread.class.getDeclaredMethod("run");
- RUN_METHOD = CTVMUtilities.getResolvedMethod(Thread.class, method);
- } catch (NoSuchMethodException e) {
- throw new Error("TEST BUG: can't find a test method : " + e, e);
- }
- }
-
- public static void main(String[] args) {
- new GetNextStackFrameTest().test();
- }
-
- private void test() {
- // Create new thread to get new clean stack
- Thread thread = new Thread(() -> recursiveFrame(RECURSION_AMOUNT));
- thread.start();
- try {
- thread.join();
- } catch (InterruptedException e) {
- throw new Error("Interrupted while waiting to join", e);
- }
- }
-
- // Helper methods for a longer stack
- private void recursiveFrame(int recursionAmount) {
- if (--recursionAmount != 0) {
- recursiveFrame(recursionAmount);
- } else {
- frame1();
- }
- }
-
- private void frame1() {
- frame2();
- }
-
- private void frame2() {
- frame3();
- }
-
- private void frame3() {
- frame4();
- }
-
- private void frame4() {
- check();
- }
-
- private void check() {
- findFirst();
- walkThrough();
- skipAll();
- findNextSkipped();
- findYourself();
- }
-
- /**
- * Finds the first topmost frame from the list of methods to search
- */
- private void findFirst() {
- checkNextFrameFor(null /* topmost frame */,
- new ResolvedJavaMethod[]
- {FRAME2_METHOD, FRAME3_METHOD, FRAME4_METHOD},
- FRAME4_METHOD, 0);
- }
-
- /**
- * Walks through whole stack and checks that every frame could be found
- * while going down the stack till the end
- */
- private void walkThrough() {
- // Check that we would get a frame 4 starting from the topmost frame
- HotSpotStackFrameReference nextStackFrame = checkNextFrameFor(
- null /* topmost frame */,
- new ResolvedJavaMethod[] {FRAME4_METHOD},
- FRAME4_METHOD, 0);
- // Check that we would get a frame 3 starting from frame 4 when we try
- // to search one of the next two frames
- nextStackFrame = checkNextFrameFor(nextStackFrame,
- new ResolvedJavaMethod[] {FRAME3_METHOD,
- FRAME2_METHOD},
- FRAME3_METHOD, 0);
- // Check that we would get a frame 1
- nextStackFrame = checkNextFrameFor(nextStackFrame,
- new ResolvedJavaMethod[] {FRAME1_METHOD},
- FRAME1_METHOD, 0);
- // Check that we would skip (RECURSION_AMOUNT - 1) methods and find a
- // recursionFrame starting from frame 1
- nextStackFrame = checkNextFrameFor(nextStackFrame,
- new ResolvedJavaMethod[] {REC_FRAME_METHOD},
- REC_FRAME_METHOD, RECURSION_AMOUNT - 1);
- // Check that we would get a Thread::run method frame;
- nextStackFrame = checkNextFrameFor(nextStackFrame,
- new ResolvedJavaMethod[] {RUN_METHOD},
- RUN_METHOD, 0);
- // Check that there are no more frames after thread's run method
- nextStackFrame = CompilerToVMHelper.getNextStackFrame(nextStackFrame,
- null /* any */, 0);
- Asserts.assertNull(nextStackFrame,
- "Found stack frame after Thread::run");
- }
-
- /**
- * Skips all frames to get null at the end of the stack
- */
- private void skipAll() {
- // Skip all frames (stack size) + 2 (getNextStackFrame() itself
- // and from CompilerToVMHelper)
- int initialSkip = Thread.currentThread().getStackTrace().length + 2;
- HotSpotStackFrameReference nextStackFrame = CompilerToVMHelper
- .getNextStackFrame(null /* topmost frame */, null /* any */,
- initialSkip);
- Asserts.assertNull(nextStackFrame, "Unexpected frame");
- }
-
- /**
- * Search for any frame skipping one frame
- */
- private void findNextSkipped() {
- // Get frame 4
- HotSpotStackFrameReference nextStackFrame = CompilerToVMHelper
- .getNextStackFrame(null /* topmost frame */,
- new ResolvedJavaMethod[] {FRAME4_METHOD}, 0);
- // Get frame 2 by skipping one method starting from frame 4
- checkNextFrameFor(nextStackFrame, null /* any */,
- FRAME2_METHOD , 1 /* skip one */);
- }
-
- /**
- * Finds test method in the stack
- */
- private void findYourself() {
- Method method;
- Class<?> aClass = CompilerToVMHelper.CompilerToVMClass();
- try {
- method = aClass.getDeclaredMethod(
- "getNextStackFrame",
- HotSpotStackFrameReference.class,
- ResolvedJavaMethod[].class,
- int.class);
- } catch (NoSuchMethodException e) {
- throw new Error("TEST BUG: can't find getNextStackFrame : " + e, e);
- }
- ResolvedJavaMethod self
- = CTVMUtilities.getResolvedMethod(aClass, method);
- checkNextFrameFor(null /* topmost frame */, null /* any */, self, 0);
- }
-
- /**
- * Searches next frame and checks that it equals to expected
- *
- * @param currentFrame start frame to search from
- * @param searchMethods a list of methods to search
- * @param expected expected frame
- * @param skip amount of frames to be skipped
- * @return frame reference
- */
- private HotSpotStackFrameReference checkNextFrameFor(
- HotSpotStackFrameReference currentFrame,
- ResolvedJavaMethod[] searchMethods,
- ResolvedJavaMethod expected,
- int skip) {
- HotSpotStackFrameReference nextStackFrame = CompilerToVMHelper
- .getNextStackFrame(currentFrame, searchMethods, skip);
- Asserts.assertNotNull(nextStackFrame);
- Asserts.assertTrue(nextStackFrame.isMethod(expected),
- "Unexpected next frame: " + nextStackFrame
- + " from current frame: " + currentFrame);
- return nextStackFrame;
- }
-}