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src/share/vm/runtime/rframe.cpp@595c0f60d50d (annotated)

src/share/vm/runtime/rframe.cpp

Tue, 18 Mar 2014 19:07:22 +0100

author

pliden

date

Tue, 18 Mar 2014 19:07:22 +0100

changeset 6413

595c0f60d50d

parent 2708

1d1603768966

child 6876

710a3c8b516e

permissions

-rw-r--r--

8029075: String deduplication in G1
Summary: Implementation of JEP 192, http://openjdk.java.net/jeps/192
Reviewed-by: brutisso, tschatzl, coleenp

duke@435	1	/*
trims@2708	2	* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#include "precompiled.hpp"
stefank@2314	26	#include "interpreter/interpreter.hpp"
stefank@2314	27	#include "oops/oop.inline.hpp"
coleenp@2497	28	#include "oops/symbol.hpp"
stefank@2314	29	#include "runtime/frame.inline.hpp"
stefank@2314	30	#include "runtime/rframe.hpp"
stefank@2314	31	#include "runtime/vframe.hpp"
stefank@2314	32	#include "runtime/vframe_hp.hpp"
duke@435	33
duke@435	34
duke@435	35	static RFrame*const noCaller = (RFrame*) 0x1; // no caller (i.e., initial frame)
duke@435	36	static RFrame*const noCallerYet = (RFrame*) 0x0; // caller not yet computed
duke@435	37
duke@435	38	RFrame::RFrame(frame fr, JavaThread* thread, RFrame*const callee) :
duke@435	39	_fr(fr), _thread(thread), _callee(callee), _num(callee ? callee->num() + 1 : 0) {
duke@435	40	_caller = (RFrame*)noCallerYet;
duke@435	41	_invocations = 0;
duke@435	42	_distance = 0;
duke@435	43	}
duke@435	44
duke@435	45	void RFrame::set_distance(int d) {
duke@435	46	assert(is_compiled() || d >= 0, "should be positive");
duke@435	47	_distance = d;
duke@435	48	}
duke@435	49
duke@435	50	InterpretedRFrame::InterpretedRFrame(frame fr, JavaThread* thread, RFrame*const callee)
duke@435	51	: RFrame(fr, thread, callee) {
duke@435	52	RegisterMap map(thread, false);
duke@435	53	_vf = javaVFrame::cast(vframe::new_vframe(&_fr, &map, thread));
duke@435	54	_method = methodHandle(thread, _vf->method());
duke@435	55	assert( _vf->is_interpreted_frame(), "must be interpreted");
duke@435	56	init();
duke@435	57	}
duke@435	58
duke@435	59	InterpretedRFrame::InterpretedRFrame(frame fr, JavaThread* thread, methodHandle m)
duke@435	60	: RFrame(fr, thread, NULL) {
duke@435	61	RegisterMap map(thread, false);
duke@435	62	_vf = javaVFrame::cast(vframe::new_vframe(&_fr, &map, thread));
duke@435	63	_method = m;
duke@435	64
duke@435	65	assert( _vf->is_interpreted_frame(), "must be interpreted");
duke@435	66	init();
duke@435	67	}
duke@435	68
duke@435	69	CompiledRFrame::CompiledRFrame(frame fr, JavaThread* thread, RFrame*const callee)
duke@435	70	: RFrame(fr, thread, callee) {
duke@435	71	init();
duke@435	72	}
duke@435	73
duke@435	74	CompiledRFrame::CompiledRFrame(frame fr, JavaThread* thread)
duke@435	75	: RFrame(fr, thread, NULL) {
duke@435	76	init();
duke@435	77	}
duke@435	78
duke@435	79	DeoptimizedRFrame::DeoptimizedRFrame(frame fr, JavaThread* thread, RFrame*const callee)
duke@435	80	: InterpretedRFrame(fr, thread, callee) {}
duke@435	81
duke@435	82	RFrame* RFrame::new_RFrame(frame fr, JavaThread* thread, RFrame*const callee) {
duke@435	83	RFrame* rf;
duke@435	84	int dist = callee ? callee->distance() : -1;
duke@435	85	if (fr.is_interpreted_frame()) {
duke@435	86	rf = new InterpretedRFrame(fr, thread, callee);
duke@435	87	dist++;
duke@435	88	} else if (fr.is_compiled_frame()) {
duke@435	89	// Even deopted frames look compiled because the deopt
duke@435	90	// is invisible until it happens.
duke@435	91	rf = new CompiledRFrame(fr, thread, callee);
duke@435	92	} else {
duke@435	93	assert(false, "Unhandled frame type");
duke@435	94	}
duke@435	95	rf->set_distance(dist);
duke@435	96	rf->init();
duke@435	97	return rf;
duke@435	98	}
duke@435	99
duke@435	100	RFrame* RFrame::caller() {
duke@435	101	if (_caller != noCallerYet) return (_caller == noCaller) ? NULL : _caller; // already computed caller
duke@435	102
duke@435	103	// caller not yet computed; do it now
duke@435	104	if (_fr.is_first_java_frame()) {
duke@435	105	_caller = (RFrame*)noCaller;
duke@435	106	return NULL;
duke@435	107	}
duke@435	108
duke@435	109	RegisterMap map(_thread, false);
duke@435	110	frame sender = _fr.real_sender(&map);
duke@435	111	if (sender.is_java_frame()) {
duke@435	112	_caller = new_RFrame(sender, thread(), this);
duke@435	113	return _caller;
duke@435	114	}
duke@435	115
duke@435	116	// Real caller is not java related
duke@435	117	_caller = (RFrame*)noCaller;
duke@435	118	return NULL;
duke@435	119	}
duke@435	120
duke@435	121	int InterpretedRFrame::cost() const {
duke@435	122	return _method->code_size(); // fix this
duke@435	123	//return _method->estimated_inline_cost(_receiverKlass);
duke@435	124	}
duke@435	125
duke@435	126	int CompiledRFrame::cost() const {
duke@435	127	nmethod* nm = top_method()->code();
duke@435	128	if (nm != NULL) {
twisti@2103	129	return nm->insts_size();
duke@435	130	} else {
duke@435	131	return top_method()->code_size();
duke@435	132	}
duke@435	133	}
duke@435	134
duke@435	135	void CompiledRFrame::init() {
duke@435	136	RegisterMap map(thread(), false);
duke@435	137	vframe* vf = vframe::new_vframe(&_fr, &map, thread());
duke@435	138	assert(vf->is_compiled_frame(), "must be compiled");
duke@435	139	_nm = compiledVFrame::cast(vf)->code();
duke@435	140	vf = vf->top();
duke@435	141	_vf = javaVFrame::cast(vf);
duke@435	142	_method = methodHandle(thread(), CodeCache::find_nmethod(_fr.pc())->method());
duke@435	143	assert(_method(), "should have found a method");
duke@435	144	#ifndef PRODUCT
duke@435	145	_invocations = _method->compiled_invocation_count();
duke@435	146	#endif
duke@435	147	}
duke@435	148
duke@435	149	void InterpretedRFrame::init() {
duke@435	150	_invocations = _method->invocation_count() + _method->backedge_count();
duke@435	151	}
duke@435	152
duke@435	153	void RFrame::print(const char* kind) {
duke@435	154	#ifndef PRODUCT
duke@435	155	#ifdef COMPILER2
duke@435	156	int cnt = top_method()->interpreter_invocation_count();
duke@435	157	#else
duke@435	158	int cnt = top_method()->invocation_count();
duke@435	159	#endif
duke@435	160	tty->print("%3d %s ", _num, is_interpreted() ? "I" : "C");
duke@435	161	top_method()->print_short_name(tty);
duke@435	162	tty->print_cr(": inv=%5d(%d) cst=%4d", _invocations, cnt, cost());
duke@435	163	#endif
duke@435	164	}
duke@435	165
duke@435	166	void CompiledRFrame::print() {
duke@435	167	RFrame::print("comp");
duke@435	168	}
duke@435	169
duke@435	170	void InterpretedRFrame::print() {
duke@435	171	RFrame::print("int.");
duke@435	172	}
duke@435	173
duke@435	174	void DeoptimizedRFrame::print() {
duke@435	175	RFrame::print("deopt.");
duke@435	176	}