Mercurial > hg > truffle
view src/share/vm/oops/metadata.hpp @ 18777:76cbf5f33f82
Truffle-DSL: fixed bug for polymorphic execute optimization.
author | Christian Humer <christian.humer@gmail.com> |
---|---|
date | Mon, 05 Jan 2015 02:38:44 +0100 |
parents | 52b4284cb496 |
children |
line wrap: on
line source
/* * Copyright (c) 2011, 2014, 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_OOPS_METADATA_HPP #define SHARE_VM_OOPS_METADATA_HPP #include "utilities/exceptions.hpp" #include "utilities/globalDefinitions.hpp" #include "utilities/ostream.hpp" // This is the base class for an internal Class related metadata class Metadata : public MetaspaceObj { // Debugging hook to check that the metadata has not been deleted. NOT_PRODUCT(int _valid;) public: NOT_PRODUCT(Metadata() { _valid = 0; }) NOT_PRODUCT(bool is_valid() const volatile { return _valid == 0; }) int identity_hash() { return (int)(uintptr_t)this; } // Rehashing support for tables containing pointers to this unsigned int new_hash(juint seed) { ShouldNotReachHere(); return 0; } virtual bool is_metadata() const volatile { return true; } virtual bool is_klass() const volatile { return false; } virtual bool is_method() const volatile { return false; } virtual bool is_methodData() const volatile { return false; } virtual bool is_constantPool() const volatile { return false; } virtual const char* internal_name() const = 0; void print() const { print_on(tty); } void print_value() const { print_value_on(tty); } void print_maybe_null() const { print_on_maybe_null(tty); } void print_on_maybe_null(outputStream* st) const { if (this == NULL) st->print("NULL"); else print_on(tty); } void print_value_on_maybe_null(outputStream* st) const { if (this == NULL) st->print("NULL"); else print_value_on(tty); } virtual void print_on(outputStream* st) const; // First level print virtual void print_value_on(outputStream* st) const = 0; // Second level print char* print_value_string() const; // Used to keep metadata alive during class redefinition // Can't assert because is called for delete functions (as an assert) virtual bool on_stack() const { return false; } virtual void set_on_stack(const bool value); // Set on_stack bit, so that the metadata is not cleared // during class redefinition. This is a virtual call because only methods // and constant pools need to be set, but someday instanceKlasses might also. static void mark_on_stack(Metadata* m) { m->set_on_stack(true); } }; #endif // SHARE_VM_OOPS_METADATA_HPP