| /* |
| * Copyright (c) 2019, 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 Level2RecompilationTest |
| * @summary Test downgrading mechanism from level 3 to level 2 for those profiled methods. |
| * @library /test/lib / |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * |
| * @build sun.hotspot.WhiteBox |
| * @run driver ClassFileInstaller sun.hotspot.WhiteBox |
| * sun.hotspot.WhiteBox$WhiteBoxPermission |
| * @run main/othervm -Xbootclasspath/a:. -XX:+TieredCompilation |
| * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:-UseCounterDecay |
| * -XX:CompileCommand=compileonly,compiler.whitebox.SimpleTestCaseHelper::* |
| * -XX:CompileCommand=print,compiler.whitebox.SimpleTestCaseHelper::* |
| * compiler.tiered.Level2RecompilationTest |
| */ |
| |
| package compiler.tiered; |
| |
| import compiler.whitebox.CompilerWhiteBoxTest; |
| |
| public class Level2RecompilationTest extends CompLevelsTest { |
| public static void main(String[] args) throws Throwable { |
| if (CompilerWhiteBoxTest.skipOnTieredCompilation(false)) { |
| throw new RuntimeException("Test isn't applicable for non-tiered mode"); |
| } |
| String[] testcases = {"METHOD_TEST", "OSR_STATIC_TEST"}; |
| CompilerWhiteBoxTest.main(Level2RecompilationTest::new, testcases); |
| } |
| |
| protected Level2RecompilationTest(TestCase testCase) { |
| super(testCase); |
| // to prevent inlining of #method |
| WHITE_BOX.testSetDontInlineMethod(method, true); |
| } |
| |
| @Override |
| protected void test() throws Exception { |
| if (skipXcompOSR()) { |
| return; |
| } |
| |
| checkNotCompiled(); |
| int bci = WHITE_BOX.getMethodEntryBci(method); |
| WHITE_BOX.markMethodProfiled(method); |
| if (testCase.isOsr()) { |
| // for OSR compilation, it must be the begin of a BB. |
| // c1_GraphBulider.cpp:153 assert(method()->bci_block_start().at(cur_bci), ... |
| bci = 0; |
| } |
| |
| WHITE_BOX.enqueueMethodForCompilation(method, COMP_LEVEL_FULL_PROFILE, bci); |
| checkCompiled(); |
| checkLevel(COMP_LEVEL_LIMITED_PROFILE, getCompLevel()); |
| |
| for (int i=0; i<100; ++i) { |
| WHITE_BOX.enqueueMethodForCompilation(method, COMP_LEVEL_FULL_PROFILE, bci); |
| waitBackgroundCompilation(); |
| checkLevel(COMP_LEVEL_LIMITED_PROFILE, getCompLevel()); |
| } |
| } |
| |
| @Override |
| protected void checkLevel(int expected, int actual) { |
| if (expected == COMP_LEVEL_FULL_PROFILE |
| && actual == COMP_LEVEL_LIMITED_PROFILE) { |
| // for simple method full_profile may be replaced by limited_profile |
| if (IS_VERBOSE) { |
| System.out.printf("Level check: full profiling was replaced " |
| + "by limited profiling. Expected: %d, actual:%d\n", |
| expected, actual); |
| } |
| return; |
| } |
| super.checkLevel(expected, actual); |
| } |
| } |
| |