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src/cpu/zero/vm/sharkFrame_zero.hpp@da91efe96a93 (annotated)

src/cpu/zero/vm/sharkFrame_zero.hpp

Sat, 01 Sep 2012 13:25:18 -0400

author

coleenp

date

Sat, 01 Sep 2012 13:25:18 -0400

changeset 4037

da91efe96a93

parent 2314

f95d63e2154a

child 4442

c566b81b3323

permissions

-rw-r--r--

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>

never@1445	1	/*
coleenp@4037	2	* Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
twisti@1513	3	* Copyright 2008, 2009 Red Hat, Inc.
never@1445	4	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
never@1445	5	*
never@1445	6	* This code is free software; you can redistribute it and/or modify it
never@1445	7	* under the terms of the GNU General Public License version 2 only, as
never@1445	8	* published by the Free Software Foundation.
never@1445	9	*
never@1445	10	* This code is distributed in the hope that it will be useful, but WITHOUT
never@1445	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
never@1445	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
never@1445	13	* version 2 for more details (a copy is included in the LICENSE file that
never@1445	14	* accompanied this code).
never@1445	15	*
never@1445	16	* You should have received a copy of the GNU General Public License version
never@1445	17	* 2 along with this work; if not, write to the Free Software Foundation,
never@1445	18	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
never@1445	19	*
trims@1907	20	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	21	* or visit www.oracle.com if you need additional information or have any
trims@1907	22	* questions.
never@1445	23	*
never@1445	24	*/
never@1445	25
stefank@2314	26	#ifndef CPU_ZERO_VM_SHARKFRAME_ZERO_HPP
stefank@2314	27	#define CPU_ZERO_VM_SHARKFRAME_ZERO_HPP
stefank@2314	28
coleenp@4037	29	#include "oops/method.hpp"
stefank@2314	30	#include "stack_zero.hpp"
stefank@2314	31
never@1445	32	// | ... |
never@1445	33	// +--------------------+ ------------------
never@1445	34	// | stack slot n-1 | low addresses
never@1445	35	// | ... |
never@1445	36	// | stack slot 0 |
never@1445	37	// | monitor m-1 |
never@1445	38	// | ... |
never@1445	39	// | monitor 0 |
never@1445	40	// | oop_tmp |
never@1445	41	// | method |
never@1445	42	// | unextended_sp |
never@1445	43	// | pc |
never@1445	44	// | frame_type |
never@1445	45	// | next_frame | high addresses
never@1445	46	// +--------------------+ ------------------
never@1445	47	// | ... |
never@1445	48
never@1445	49	class SharkFrame : public ZeroFrame {
twisti@1513	50	friend class SharkStack;
never@1445	51
never@1445	52	private:
never@1445	53	SharkFrame() : ZeroFrame() {
never@1445	54	ShouldNotCallThis();
never@1445	55	}
never@1445	56
never@1445	57	protected:
never@1445	58	enum Layout {
never@1445	59	pc_off = jf_header_words,
never@1445	60	unextended_sp_off,
never@1445	61	method_off,
never@1445	62	oop_tmp_off,
never@1445	63	header_words
never@1445	64	};
never@1445	65
never@1445	66	public:
never@1445	67	address pc() const {
never@1445	68	return (address) value_of_word(pc_off);
never@1445	69	}
never@1445	70
never@1445	71	intptr_t* unextended_sp() const {
never@1445	72	return (intptr_t *) value_of_word(unextended_sp_off);
never@1445	73	}
never@1445	74
coleenp@4037	75	Method* method() const {
coleenp@4037	76	return (Method*) value_of_word(method_off);
never@1445	77	}
never@1445	78
never@1445	79	public:
never@1445	80	void identify_word(int frame_index,
never@1445	81	int offset,
never@1445	82	char* fieldbuf,
never@1445	83	char* valuebuf,
never@1445	84	int buflen) const;
never@1445	85	};
stefank@2314	86
stefank@2314	87	#endif // CPU_ZERO_VM_SHARKFRAME_ZERO_HPP