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src/share/vm/ci/ciMethodBlocks.hpp@a61af66fc99e (annotated)

src/share/vm/ci/ciMethodBlocks.hpp

Sat, 01 Dec 2007 00:00:00 +0000

author

duke

date

Sat, 01 Dec 2007 00:00:00 +0000

changeset 435

a61af66fc99e

child 461

0871d5cd64cd

permissions

-rw-r--r--

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duke@435	1	/*
duke@435	2	* Copyright 2006 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
duke@435	26	class ciBlock;
duke@435	27
duke@435	28	typedef short ciBlockIndex;
duke@435	29
duke@435	30	class ciMethodBlocks : public ResourceObj {
duke@435	31	private:
duke@435	32	ciMethod *_method;
duke@435	33	Arena *_arena;
duke@435	34	GrowableArray<ciBlock *> *_blocks;
duke@435	35	ciBlock **_bci_to_block;
duke@435	36	int _num_blocks;
duke@435	37	int _code_size;
duke@435	38
duke@435	39	void do_analysis();
duke@435	40	public:
duke@435	41	ciMethodBlocks(Arena *arena, ciMethod *meth);
duke@435	42
duke@435	43	ciBlock *block_containing(int bci);
duke@435	44	ciBlock *block(int index) { return _blocks->at(index); }
duke@435	45	ciBlock *make_block_at(int bci);
duke@435	46	ciBlock *split_block_at(int bci);
duke@435	47	bool is_block_start(int bci);
duke@435	48	int num_blocks() { return _num_blocks;}
duke@435	49	void clear_processed();
duke@435	50
duke@435	51	#ifndef PRODUCT
duke@435	52	void dump();
duke@435	53	#endif
duke@435	54	};
duke@435	55
duke@435	56	class ciBlock : public ResourceObj {
duke@435	57	private:
duke@435	58	int _idx;
duke@435	59	int _start_bci;
duke@435	60	int _limit_bci;
duke@435	61	int _control_bci;
duke@435	62	uint _flags;
duke@435	63	int _ex_start_bci;
duke@435	64	int _ex_limit_bci;
duke@435	65	#ifndef PRODUCT
duke@435	66	ciMethod *_method;
duke@435	67	#endif
duke@435	68	enum {
duke@435	69	Processed = (1 << 0),
duke@435	70	Handler = (1 << 1),
duke@435	71	MayThrow = (1 << 2),
duke@435	72	DoesJsr = (1 << 3),
duke@435	73	DoesRet = (1 << 4),
duke@435	74	RetTarget = (1 << 5),
duke@435	75	HasHandler = (1 << 6)
duke@435	76	};
duke@435	77
duke@435	78
duke@435	79	public:
duke@435	80	enum {
duke@435	81	fall_through_bci = -1
duke@435	82	};
duke@435	83
duke@435	84	ciBlock(ciMethod *method, int index, ciMethodBlocks *mb, int start_bci);
duke@435	85	int start_bci() const { return _start_bci; }
duke@435	86	int limit_bci() const { return _limit_bci; }
duke@435	87	int control_bci() const { return _control_bci; }
duke@435	88	int index() const { return _idx; }
duke@435	89	void set_start_bci(int bci) { _start_bci = bci; }
duke@435	90	void set_limit_bci(int bci) { _limit_bci = bci; }
duke@435	91	void set_control_bci(int bci) { _control_bci = bci;}
duke@435	92	void set_exception_range(int start_bci, int limit_bci);
duke@435	93	int ex_start_bci() const { return _ex_start_bci; }
duke@435	94	int ex_limit_bci() const { return _ex_limit_bci; }
duke@435	95	bool contains(int bci) const { return start_bci() <= bci && bci < limit_bci(); }
duke@435	96
duke@435	97
duke@435	98	// flag handling
duke@435	99	bool processed() const { return (_flags & Processed) != 0; }
duke@435	100	bool is_handler() const { return (_flags & Handler) != 0; }
duke@435	101	bool may_throw() const { return (_flags & MayThrow) != 0; }
duke@435	102	bool does_jsr() const { return (_flags & DoesJsr) != 0; }
duke@435	103	bool does_ret() const { return (_flags & DoesRet) != 0; }
duke@435	104	bool has_handler() const { return (_flags & HasHandler) != 0; }
duke@435	105	bool is_ret_target() const { return (_flags & RetTarget) != 0; }
duke@435	106	void set_processed() { _flags |= Processed; }
duke@435	107	void clear_processed() { _flags &= ~Processed; }
duke@435	108	void set_handler() { _flags |= Handler; }
duke@435	109	void set_may_throw() { _flags |= MayThrow; }
duke@435	110	void set_does_jsr() { _flags |= DoesJsr; }
duke@435	111	void clear_does_jsr() { _flags &= ~DoesJsr; }
duke@435	112	void set_does_ret() { _flags |= DoesRet; }
duke@435	113	void clear_does_ret() { _flags |= DoesRet; }
duke@435	114	void set_is_ret_target() { _flags |= RetTarget; }
duke@435	115	void set_has_handler() { _flags |= HasHandler; }
duke@435	116	#ifndef PRODUCT
duke@435	117	ciMethod *method() const { return _method; }
duke@435	118	void dump();
duke@435	119	void print_on(outputStream* st) const PRODUCT_RETURN;
duke@435	120	#endif
duke@435	121	};