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src/share/vm/runtime/rframe.hpp@9f4457a14b58 (annotated)

src/share/vm/runtime/rframe.hpp

Wed, 09 Apr 2008 15:10:22 -0700

author

rasbold

date

Wed, 09 Apr 2008 15:10:22 -0700

changeset 544

9f4457a14b58

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

Merge

duke@435	1	/*
duke@435	2	* Copyright 1997-2000 Sun Microsystems, Inc. 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	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// rframes ("recompiler frames") decorate stack frames with some extra information
duke@435	26	// needed by the recompiler. The recompiler views the stack (at the time of recompilation)
duke@435	27	// as a list of rframes.
duke@435	28
duke@435	29	class RFrame : public ResourceObj {
duke@435	30	protected:
duke@435	31	const frame _fr; // my frame
duke@435	32	JavaThread* const _thread; // thread where frame resides.
duke@435	33	RFrame* _caller; // caller / callee rframes (or NULL)
duke@435	34	RFrame*const _callee;
duke@435	35	const int _num; // stack frame number (0 = most recent)
duke@435	36	int _invocations; // current invocation estimate (for this frame)
duke@435	37	// (i.e., how often was this frame called)
duke@435	38	int _distance; // recompilation search "distance" (measured in # of interpreted frames)
duke@435	39
duke@435	40	RFrame(frame fr, JavaThread* thread, RFrame*const callee);
duke@435	41	virtual void init() = 0; // compute invocations, loopDepth, etc.
duke@435	42	void print(const char* name);
duke@435	43
duke@435	44	public:
duke@435	45
duke@435	46	static RFrame* new_RFrame(frame fr, JavaThread* thread, RFrame*const callee);
duke@435	47
duke@435	48	virtual bool is_interpreted() const { return false; }
duke@435	49	virtual bool is_compiled() const { return false; }
duke@435	50	int distance() const { return _distance; }
duke@435	51	void set_distance(int d);
duke@435	52	int invocations() const { return _invocations; }
duke@435	53	int num() const { return _num; }
duke@435	54	frame fr() const { return _fr; }
duke@435	55	JavaThread* thread() const { return _thread; }
duke@435	56	virtual int cost() const = 0; // estimated inlining cost (size)
duke@435	57	virtual methodHandle top_method() const = 0;
duke@435	58	virtual javaVFrame* top_vframe() const = 0;
duke@435	59	virtual nmethod* nm() const { ShouldNotCallThis(); return NULL; }
duke@435	60
duke@435	61	RFrame* caller();
duke@435	62	RFrame* callee() const { return _callee; }
duke@435	63	RFrame* parent() const; // rframe containing lexical scope (if any)
duke@435	64	virtual void print() = 0;
duke@435	65
duke@435	66	static int computeSends(methodOop m);
duke@435	67	static int computeSends(nmethod* nm);
duke@435	68	static int computeCumulSends(methodOop m);
duke@435	69	static int computeCumulSends(nmethod* nm);
duke@435	70	};
duke@435	71
duke@435	72	class CompiledRFrame : public RFrame { // frame containing a compiled method
duke@435	73	protected:
duke@435	74	nmethod* _nm;
duke@435	75	javaVFrame* _vf; // top vframe; may be NULL (for most recent frame)
duke@435	76	methodHandle _method; // top method
duke@435	77
duke@435	78	CompiledRFrame(frame fr, JavaThread* thread, RFrame*const callee);
duke@435	79	void init();
duke@435	80	friend class RFrame;
duke@435	81
duke@435	82	public:
duke@435	83	CompiledRFrame(frame fr, JavaThread* thread); // for nmethod triggering its counter (callee == NULL)
duke@435	84	bool is_compiled() const { return true; }
duke@435	85	methodHandle top_method() const { return _method; }
duke@435	86	javaVFrame* top_vframe() const { return _vf; }
duke@435	87	nmethod* nm() const { return _nm; }
duke@435	88	int cost() const;
duke@435	89	void print();
duke@435	90	};
duke@435	91
duke@435	92	class InterpretedRFrame : public RFrame { // interpreter frame
duke@435	93	protected:
duke@435	94	javaVFrame* _vf; // may be NULL (for most recent frame)
duke@435	95	methodHandle _method;
duke@435	96
duke@435	97	InterpretedRFrame(frame fr, JavaThread* thread, RFrame*const callee);
duke@435	98	void init();
duke@435	99	friend class RFrame;
duke@435	100
duke@435	101	public:
duke@435	102	InterpretedRFrame(frame fr, JavaThread* thread, methodHandle m); // constructor for method triggering its invocation counter
duke@435	103	bool is_interpreted() const { return true; }
duke@435	104	methodHandle top_method() const { return _method; }
duke@435	105	javaVFrame* top_vframe() const { return _vf; }
duke@435	106	int cost() const;
duke@435	107	void print();
duke@435	108	};
duke@435	109
duke@435	110	// treat deoptimized frames as interpreted
duke@435	111	class DeoptimizedRFrame : public InterpretedRFrame {
duke@435	112	protected:
duke@435	113	DeoptimizedRFrame(frame fr, JavaThread* thread, RFrame*const callee);
duke@435	114	friend class RFrame;
duke@435	115	public:
duke@435	116	void print();
duke@435	117	};