Mercurial > hg > graal-compiler
view src/share/vm/utilities/constantTag.cpp @ 2149:7e37af9d69ef
7011379: G1: overly long concurrent marking cycles
Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads.
Reviewed-by: johnc, ysr
author | tonyp |
---|---|
date | Wed, 19 Jan 2011 09:35:17 -0500 |
parents | dad31fc330cd |
children | ed69575596ac |
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/* * Copyright (c) 1997, 2010, 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. * */ #include "precompiled.hpp" #include "utilities/constantTag.hpp" #ifndef PRODUCT void constantTag::print_on(outputStream* st) const { st->print(internal_name()); } #endif // PRODUCT BasicType constantTag::basic_type() const { switch (_tag) { case JVM_CONSTANT_Integer : return T_INT; case JVM_CONSTANT_Float : return T_FLOAT; case JVM_CONSTANT_Long : return T_LONG; case JVM_CONSTANT_Double : return T_DOUBLE; case JVM_CONSTANT_Class : case JVM_CONSTANT_String : case JVM_CONSTANT_UnresolvedClass : case JVM_CONSTANT_UnresolvedClassInError : case JVM_CONSTANT_ClassIndex : case JVM_CONSTANT_UnresolvedString : case JVM_CONSTANT_StringIndex : case JVM_CONSTANT_MethodHandle : case JVM_CONSTANT_MethodType : case JVM_CONSTANT_Object : return T_OBJECT; default: ShouldNotReachHere(); return T_ILLEGAL; } } const char* constantTag::internal_name() const { switch (_tag) { case JVM_CONSTANT_Invalid : return "Invalid index"; case JVM_CONSTANT_Class : return "Class"; case JVM_CONSTANT_Fieldref : return "Field"; case JVM_CONSTANT_Methodref : return "Method"; case JVM_CONSTANT_InterfaceMethodref : return "InterfaceMethod"; case JVM_CONSTANT_String : return "String"; case JVM_CONSTANT_Integer : return "Integer"; case JVM_CONSTANT_Float : return "Float"; case JVM_CONSTANT_Long : return "Long"; case JVM_CONSTANT_Double : return "Double"; case JVM_CONSTANT_NameAndType : return "NameAndType"; case JVM_CONSTANT_MethodHandle : return "MethodHandle"; case JVM_CONSTANT_MethodType : return "MethodType"; case JVM_CONSTANT_InvokeDynamic : return "InvokeDynamic"; case JVM_CONSTANT_InvokeDynamicTrans : return "InvokeDynamic/transitional"; case JVM_CONSTANT_Object : return "Object"; case JVM_CONSTANT_Utf8 : return "Utf8"; case JVM_CONSTANT_UnresolvedClass : return "Unresolved Class"; case JVM_CONSTANT_UnresolvedClassInError : return "Unresolved Class Error"; case JVM_CONSTANT_ClassIndex : return "Unresolved Class Index"; case JVM_CONSTANT_UnresolvedString : return "Unresolved String"; case JVM_CONSTANT_StringIndex : return "Unresolved String Index"; default: ShouldNotReachHere(); return "Illegal"; } }