Mercurial > jdk8-mips64-public > hotspot / annotate
test/compiler/tiered/Level2RecompilationTest.java@61d955db2a5b (annotated)
test/compiler/tiered/Level2RecompilationTest.java
Wed, 05 Jun 2019 03:07:31 +0100
- author
- xliu
- date
- Wed, 05 Jun 2019 03:07:31 +0100
- changeset 9690
- 61d955db2a5b
- permissions
- -rw-r--r--
8222670: pathological case of JIT recompilation and code cache bloat
Summary: Prevent downgraded compilation tasks from recompiling.
Reviewed-by: sgehwolf, thartmann, andrew
| xliu@9690 | 1 | /* |
| xliu@9690 | 2 | * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. |
| xliu@9690 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| xliu@9690 | 4 | * |
| xliu@9690 | 5 | * This code is free software; you can redistribute it and/or modify it |
| xliu@9690 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| xliu@9690 | 7 | * published by the Free Software Foundation. |
| xliu@9690 | 8 | * |
| xliu@9690 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| xliu@9690 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| xliu@9690 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| xliu@9690 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| xliu@9690 | 13 | * accompanied this code). |
| xliu@9690 | 14 | * |
| xliu@9690 | 15 | * You should have received a copy of the GNU General Public License version |
| xliu@9690 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| xliu@9690 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| xliu@9690 | 18 | * |
| xliu@9690 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| xliu@9690 | 20 | * or visit www.oracle.com if you need additional information or have any |
| xliu@9690 | 21 | * questions. |
| xliu@9690 | 22 | */ |
| xliu@9690 | 23 | |
| xliu@9690 | 24 | /** |
| xliu@9690 | 25 | * @test Level2RecompilationTest |
| xliu@9690 | 26 | * @summary Test downgrading mechanism from level 3 to level 2 for those profiled methods. |
| xliu@9690 | 27 | * @library /testlibrary /testlibrary/whitebox /compiler/whitebox |
| xliu@9690 | 28 | * @build Level2RecompilationTest |
| xliu@9690 | 29 | * @run main ClassFileInstaller sun.hotspot.WhiteBox |
| xliu@9690 | 30 | * @run main/othervm -Xbootclasspath/a:. -XX:+TieredCompilation |
| xliu@9690 | 31 | * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:-UseCounterDecay |
| xliu@9690 | 32 | * -XX:CompileCommand=compileonly,SimpleTestCase$Helper::* |
| xliu@9690 | 33 | * -XX:CompileCommand=print,SimpleTestCase$Helper::* |
| xliu@9690 | 34 | * Level2RecompilationTest |
| xliu@9690 | 35 | */ |
| xliu@9690 | 36 | public class Level2RecompilationTest extends CompLevelsTest { |
| xliu@9690 | 37 | public static void main(String[] args) throws Throwable { |
| xliu@9690 | 38 | if (CompilerWhiteBoxTest.skipOnTieredCompilation(false)) { |
| xliu@9690 | 39 | throw new RuntimeException("Test isn't applicable for non-tiered mode"); |
| xliu@9690 | 40 | } |
| xliu@9690 | 41 | String[] testcases = {"METHOD_TEST", "OSR_STATIC_TEST"}; |
| xliu@9690 | 42 | CompilerWhiteBoxTest.main(Level2RecompilationTest::new, testcases); |
| xliu@9690 | 43 | } |
| xliu@9690 | 44 | |
| xliu@9690 | 45 | protected Level2RecompilationTest(TestCase testCase) { |
| xliu@9690 | 46 | super(testCase); |
| xliu@9690 | 47 | // to prevent inlining of #method |
| xliu@9690 | 48 | WHITE_BOX.testSetDontInlineMethod(method, true); |
| xliu@9690 | 49 | } |
| xliu@9690 | 50 | |
| xliu@9690 | 51 | @Override |
| xliu@9690 | 52 | protected void test() throws Exception { |
| xliu@9690 | 53 | if (skipXcompOSR()) { |
| xliu@9690 | 54 | return; |
| xliu@9690 | 55 | } |
| xliu@9690 | 56 | |
| xliu@9690 | 57 | checkNotCompiled(); |
| xliu@9690 | 58 | int bci = WHITE_BOX.getMethodEntryBci(method); |
| xliu@9690 | 59 | WHITE_BOX.markMethodProfiled(method); |
| xliu@9690 | 60 | if (testCase.isOsr()) { |
| xliu@9690 | 61 | // for OSR compilation, it must be the begin of a BB. |
| xliu@9690 | 62 | // c1_GraphBulider.cpp:153 assert(method()->bci_block_start().at(cur_bci), ... |
| xliu@9690 | 63 | bci = 0; |
| xliu@9690 | 64 | } |
| xliu@9690 | 65 | |
| xliu@9690 | 66 | WHITE_BOX.enqueueMethodForCompilation(method, COMP_LEVEL_FULL_PROFILE, bci); |
| xliu@9690 | 67 | checkCompiled(); |
| xliu@9690 | 68 | checkLevel(COMP_LEVEL_LIMITED_PROFILE, getCompLevel()); |
| xliu@9690 | 69 | |
| xliu@9690 | 70 | for (int i=0; i<100; ++i) { |
| xliu@9690 | 71 | WHITE_BOX.enqueueMethodForCompilation(method, COMP_LEVEL_FULL_PROFILE, bci); |
| xliu@9690 | 72 | waitBackgroundCompilation(); |
| xliu@9690 | 73 | checkLevel(COMP_LEVEL_LIMITED_PROFILE, getCompLevel()); |
| xliu@9690 | 74 | } |
| xliu@9690 | 75 | } |
| xliu@9690 | 76 | |
| xliu@9690 | 77 | @Override |
| xliu@9690 | 78 | protected void checkLevel(int expected, int actual) { |
| xliu@9690 | 79 | if (expected == COMP_LEVEL_FULL_PROFILE |
| xliu@9690 | 80 | && actual == COMP_LEVEL_LIMITED_PROFILE) { |
| xliu@9690 | 81 | // for simple method full_profile may be replaced by limited_profile |
| xliu@9690 | 82 | if (IS_VERBOSE) { |
| xliu@9690 | 83 | System.out.printf("Level check: full profiling was replaced " |
| xliu@9690 | 84 | + "by limited profiling. Expected: %d, actual:%d\n", |
| xliu@9690 | 85 | expected, actual); |
| xliu@9690 | 86 | } |
| xliu@9690 | 87 | return; |
| xliu@9690 | 88 | } |
| xliu@9690 | 89 | super.checkLevel(expected, actual); |
| xliu@9690 | 90 | } |
| xliu@9690 | 91 | } |
| xliu@9690 | 92 |
