Mercurial > jdk8-mips64-public > hotspot / annotate
test/compiler/stable/StableConfiguration.java@dbb05f6d93c4 (annotated)
test/compiler/stable/StableConfiguration.java
Mon, 28 Jul 2014 15:06:38 -0700
- author
- fzhinkin
- date
- Mon, 28 Jul 2014 15:06:38 -0700
- changeset 6997
- dbb05f6d93c4
- parent 0
- f90c822e73f8
- permissions
- -rw-r--r--
8051344: JVM crashed in Compile::start() during method parsing w/ UseRTMDeopt turned on
Summary: call rtm_deopt() only if there were no compilation bailouts before.
Reviewed-by: kvn
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. Oracle designates this |
| aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
| aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
| aoqi@0 | 10 | * |
| aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 15 | * accompanied this code). |
| aoqi@0 | 16 | * |
| aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 20 | * |
| aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 23 | * questions. |
| aoqi@0 | 24 | */ |
| aoqi@0 | 25 | package java.lang.invoke; |
| aoqi@0 | 26 | |
| aoqi@0 | 27 | import java.lang.reflect.Method; |
| aoqi@0 | 28 | import java.util.Properties; |
| aoqi@0 | 29 | import sun.hotspot.WhiteBox; |
| aoqi@0 | 30 | |
| aoqi@0 | 31 | public class StableConfiguration { |
| aoqi@0 | 32 | static final WhiteBox WB = WhiteBox.getWhiteBox(); |
| aoqi@0 | 33 | static final boolean isStableEnabled; |
| aoqi@0 | 34 | static final boolean isServerWithStable; |
| aoqi@0 | 35 | |
| aoqi@0 | 36 | static { |
| aoqi@0 | 37 | Boolean value = WB.getBooleanVMFlag("FoldStableValues"); |
| aoqi@0 | 38 | isStableEnabled = (value == null ? false : value); |
| aoqi@0 | 39 | isServerWithStable = isStableEnabled && get(); |
| aoqi@0 | 40 | System.out.println("@Stable: " + (isStableEnabled ? "enabled" : "disabled")); |
| aoqi@0 | 41 | System.out.println("Server Compiler: " + get()); |
| aoqi@0 | 42 | } |
| aoqi@0 | 43 | |
| aoqi@0 | 44 | // ::get() is among immediately compiled methods. |
| aoqi@0 | 45 | static boolean get() { |
| aoqi@0 | 46 | try { |
| aoqi@0 | 47 | Method m = StableConfiguration.class.getDeclaredMethod("get"); |
| aoqi@0 | 48 | int level = WB.getMethodCompilationLevel(m); |
| aoqi@0 | 49 | if (level > 0) { |
| aoqi@0 | 50 | return (level == 4); |
| aoqi@0 | 51 | } else { |
| aoqi@0 | 52 | String javaVM = System.getProperty("java.vm.name", ""); |
| aoqi@0 | 53 | if (javaVM.contains("Server")) return true; |
| aoqi@0 | 54 | if (javaVM.contains("Client")) return false; |
| aoqi@0 | 55 | throw new Error("Unknown VM type: "+javaVM); |
| aoqi@0 | 56 | } |
| aoqi@0 | 57 | } catch (NoSuchMethodException e) { |
| aoqi@0 | 58 | throw new Error(e); |
| aoqi@0 | 59 | } |
| aoqi@0 | 60 | } |
| aoqi@0 | 61 | |
| aoqi@0 | 62 | } |
