Mercurial > hg > truffle
diff src/share/vm/ci/ciMetadata.hpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author | coleenp |
---|---|
date | Sat, 01 Sep 2012 13:25:18 -0400 |
parents | |
children | bd7a7ce2e264 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/ci/ciMetadata.hpp Sat Sep 01 13:25:18 2012 -0400 @@ -0,0 +1,120 @@ +/* + * Copyright (c) 1999, 2012, 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_CIMETADATA_HPP +#define SHARE_VM_CI_CIMETADATA_HPP + +#include "ci/ciBaseObject.hpp" +#include "ci/ciClassList.hpp" +#include "memory/allocation.hpp" +#include "runtime/handles.hpp" +#include "runtime/jniHandles.hpp" + +// ciMetadata +// +// Compiler interface to metadata object in the VM, not Java object. + +class ciMetadata: public ciBaseObject { + CI_PACKAGE_ACCESS + friend class ciEnv; + + protected: + Metadata* _metadata; + + ciMetadata(): _metadata(NULL) {} + ciMetadata(Metadata* o): _metadata(o) {} + + virtual bool is_classless() const { return false; } + public: + bool is_loaded() const { return _metadata != NULL || is_classless(); } + + virtual bool is_metadata() const { return true; } + + virtual bool is_type() const { return false; } + virtual bool is_cpcache() const { return false; } + virtual bool is_return_address() const { return false; } + virtual bool is_method() const { return false; } + virtual bool is_method_data() const { return false; } + virtual bool is_klass() const { return false; } + virtual bool is_instance_klass() const { return false; } + virtual bool is_array_klass() const { return false; } + virtual bool is_obj_array_klass() const { return false; } + virtual bool is_type_array_klass() const { return false; } + + ciMethod* as_method() { + assert(is_method(), "bad cast"); + return (ciMethod*)this; + } + ciMethodData* as_method_data() { + assert(is_method_data(), "bad cast"); + return (ciMethodData*)this; + } + ciSymbol* as_symbol() { + assert(is_symbol(), "bad cast"); + return (ciSymbol*)this; + } + ciType* as_type() { + assert(is_type(), "bad cast"); + return (ciType*)this; + } + ciReturnAddress* as_return_address() { + assert(is_return_address(), "bad cast"); + return (ciReturnAddress*)this; + } + ciKlass* as_klass() { + assert(is_klass(), "bad cast"); + return (ciKlass*)this; + } + ciInstanceKlass* as_instance_klass() { + assert(is_instance_klass(), "bad cast"); + return (ciInstanceKlass*)this; + } + ciArrayKlass* as_array_klass() { + assert(is_array_klass(), "bad cast"); + return (ciArrayKlass*)this; + } + ciObjArrayKlass* as_obj_array_klass() { + assert(is_obj_array_klass(), "bad cast"); + return (ciObjArrayKlass*)this; + } + ciTypeArrayKlass* as_type_array_klass() { + assert(is_type_array_klass(), "bad cast"); + return (ciTypeArrayKlass*)this; + } + + Metadata* constant_encoding() { return _metadata; } + + bool equals(ciMetadata* obj) const { return (this == obj); } + + int hash() { return ident() * 31; } // ??? + + void print(outputStream* st); + virtual void print_impl(outputStream* st) {} + virtual const char* type_string() { return "ciMetadata"; } + + void print() { print(tty); } + void print_metadata(outputStream* st = tty); + +}; +#endif // SHARE_VM_CI_CIMETADATA_HPP