Mercurial > hg > graal-compiler
view src/share/vm/ci/ciKlassKlass.hpp @ 3405:8cbcd406c42e
7042740: CMS: assert(n> q) failed: Looping at: ... blockOffsetTable.cpp:557
Summary: Do a one-step look-ahead, when sweeping free or garbage blocks, to avoid overstepping sweep limit, which may become a non-block-boundary because of a heap expansion delta coalescing with a previously co-terminal free block.
Reviewed-by: brutisso, tonyp
author | ysr |
---|---|
date | Fri, 27 May 2011 15:05:33 -0700 |
parents | f95d63e2154a |
children |
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/* * Copyright (c) 1999, 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. * */ #ifndef SHARE_VM_CI_CIKLASSKLASS_HPP #define SHARE_VM_CI_CIKLASSKLASS_HPP #include "ci/ciKlass.hpp" #include "ci/ciSymbol.hpp" // ciKlassKlass // // This class represents a klassOop in the HotSpot virtual machine // whose Klass part is a klassKlass or one of its subclasses // (instanceKlassKlass, objArrayKlassKlass, typeArrayKlassKlass). class ciKlassKlass : public ciKlass { CI_PACKAGE_ACCESS protected: ciKlassKlass(KlassHandle h_k) : ciKlass(h_k, ciSymbol::make("unique_klassKlass")) { assert(h_k()->klass_part()->oop_is_klass(), "wrong type"); } ciKlassKlass(KlassHandle h_k, ciSymbol *name) : ciKlass(h_k, name) {} klassKlass* get_klassKlass() { return (klassKlass*)get_Klass(); } const char* type_string() { return "ciKlassKlass"; } public: // What kind of ciObject is this? bool is_klass_klass() { return true; } // Return the distinguished ciKlassKlass instance. static ciKlassKlass* make(); }; #endif // SHARE_VM_CI_CIKLASSKLASS_HPP