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src/share/vm/runtime/rframe.hpp@2a33b32dd03c (annotated)

src/share/vm/runtime/rframe.hpp

Thu, 24 May 2018 19:24:53 +0800

author

aoqi

date

Thu, 24 May 2018 19:24:53 +0800

changeset 8861

2a33b32dd03c

parent 6876

710a3c8b516e

permissions

-rw-r--r--

#7046 Disable the compilation when branch offset is beyond short branch
Contributed-by: fujie, aoqi

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#ifndef SHARE_VM_RUNTIME_RFRAME_HPP
aoqi@0	26	#define SHARE_VM_RUNTIME_RFRAME_HPP
aoqi@0	27
aoqi@0	28	#include "memory/allocation.hpp"
aoqi@0	29	#include "runtime/frame.inline.hpp"
aoqi@0	30
aoqi@0	31	// rframes ("recompiler frames") decorate stack frames with some extra information
aoqi@0	32	// needed by the recompiler. The recompiler views the stack (at the time of recompilation)
aoqi@0	33	// as a list of rframes.
aoqi@0	34
aoqi@0	35	class RFrame : public ResourceObj {
aoqi@0	36	protected:
aoqi@0	37	const frame _fr; // my frame
aoqi@0	38	JavaThread* const _thread; // thread where frame resides.
aoqi@0	39	RFrame* _caller; // caller / callee rframes (or NULL)
aoqi@0	40	RFrame*const _callee;
aoqi@0	41	const int _num; // stack frame number (0 = most recent)
aoqi@0	42	int _invocations; // current invocation estimate (for this frame)
aoqi@0	43	// (i.e., how often was this frame called)
aoqi@0	44	int _distance; // recompilation search "distance" (measured in # of interpreted frames)
aoqi@0	45
aoqi@0	46	RFrame(frame fr, JavaThread* thread, RFrame*const callee);
aoqi@0	47	virtual void init() = 0; // compute invocations, loopDepth, etc.
aoqi@0	48	void print(const char* name);
aoqi@0	49
aoqi@0	50	public:
aoqi@0	51
aoqi@0	52	static RFrame* new_RFrame(frame fr, JavaThread* thread, RFrame*const callee);
aoqi@0	53
aoqi@0	54	virtual bool is_interpreted() const { return false; }
aoqi@0	55	virtual bool is_compiled() const { return false; }
aoqi@0	56	int distance() const { return _distance; }
aoqi@0	57	void set_distance(int d);
aoqi@0	58	int invocations() const { return _invocations; }
aoqi@0	59	int num() const { return _num; }
aoqi@0	60	frame fr() const { return _fr; }
aoqi@0	61	JavaThread* thread() const { return _thread; }
aoqi@0	62	virtual int cost() const = 0; // estimated inlining cost (size)
aoqi@0	63	virtual methodHandle top_method() const = 0;
aoqi@0	64	virtual javaVFrame* top_vframe() const = 0;
aoqi@0	65	virtual nmethod* nm() const { ShouldNotCallThis(); return NULL; }
aoqi@0	66
aoqi@0	67	RFrame* caller();
aoqi@0	68	RFrame* callee() const { return _callee; }
aoqi@0	69	RFrame* parent() const; // rframe containing lexical scope (if any)
aoqi@0	70	virtual void print() = 0;
aoqi@0	71
aoqi@0	72	static int computeSends(Method* m);
aoqi@0	73	static int computeSends(nmethod* nm);
aoqi@0	74	static int computeCumulSends(Method* m);
aoqi@0	75	static int computeCumulSends(nmethod* nm);
aoqi@0	76	};
aoqi@0	77
aoqi@0	78	class CompiledRFrame : public RFrame { // frame containing a compiled method
aoqi@0	79	protected:
aoqi@0	80	nmethod* _nm;
aoqi@0	81	javaVFrame* _vf; // top vframe; may be NULL (for most recent frame)
aoqi@0	82	methodHandle _method; // top method
aoqi@0	83
aoqi@0	84	CompiledRFrame(frame fr, JavaThread* thread, RFrame*const callee);
aoqi@0	85	void init();
aoqi@0	86	friend class RFrame;
aoqi@0	87
aoqi@0	88	public:
aoqi@0	89	CompiledRFrame(frame fr, JavaThread* thread); // for nmethod triggering its counter (callee == NULL)
aoqi@0	90	bool is_compiled() const { return true; }
aoqi@0	91	methodHandle top_method() const { return _method; }
aoqi@0	92	javaVFrame* top_vframe() const { return _vf; }
aoqi@0	93	nmethod* nm() const { return _nm; }
aoqi@0	94	int cost() const;
aoqi@0	95	void print();
aoqi@0	96	};
aoqi@0	97
aoqi@0	98	class InterpretedRFrame : public RFrame { // interpreter frame
aoqi@0	99	protected:
aoqi@0	100	javaVFrame* _vf; // may be NULL (for most recent frame)
aoqi@0	101	methodHandle _method;
aoqi@0	102
aoqi@0	103	InterpretedRFrame(frame fr, JavaThread* thread, RFrame*const callee);
aoqi@0	104	void init();
aoqi@0	105	friend class RFrame;
aoqi@0	106
aoqi@0	107	public:
aoqi@0	108	InterpretedRFrame(frame fr, JavaThread* thread, methodHandle m); // constructor for method triggering its invocation counter
aoqi@0	109	bool is_interpreted() const { return true; }
aoqi@0	110	methodHandle top_method() const { return _method; }
aoqi@0	111	javaVFrame* top_vframe() const { return _vf; }
aoqi@0	112	int cost() const;
aoqi@0	113	void print();
aoqi@0	114	};
aoqi@0	115
aoqi@0	116	// treat deoptimized frames as interpreted
aoqi@0	117	class DeoptimizedRFrame : public InterpretedRFrame {
aoqi@0	118	protected:
aoqi@0	119	DeoptimizedRFrame(frame fr, JavaThread* thread, RFrame*const callee);
aoqi@0	120	friend class RFrame;
aoqi@0	121	public:
aoqi@0	122	void print();
aoqi@0	123	};
aoqi@0	124
aoqi@0	125	#endif // SHARE_VM_RUNTIME_RFRAME_HPP