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src/share/vm/ci/ciMethodBlocks.hpp@ac27a9c85bea (annotated)

src/share/vm/ci/ciMethodBlocks.hpp

Thu, 24 May 2018 18:41:44 +0800

author

aoqi

date

Thu, 24 May 2018 18:41:44 +0800

changeset 8856

ac27a9c85bea

parent 6876

710a3c8b516e

permissions

-rw-r--r--

Merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2006, 2010, 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_CI_CIMETHODBLOCKS_HPP
aoqi@0	26	#define SHARE_VM_CI_CIMETHODBLOCKS_HPP
aoqi@0	27
aoqi@0	28	#include "ci/ciMethod.hpp"
aoqi@0	29	#include "memory/resourceArea.hpp"
aoqi@0	30	#include "utilities/growableArray.hpp"
aoqi@0	31
aoqi@0	32
aoqi@0	33	class ciBlock;
aoqi@0	34
aoqi@0	35	typedef short ciBlockIndex;
aoqi@0	36
aoqi@0	37	class ciMethodBlocks : public ResourceObj {
aoqi@0	38	private:
aoqi@0	39	ciMethod *_method;
aoqi@0	40	Arena *_arena;
aoqi@0	41	GrowableArray<ciBlock *> *_blocks;
aoqi@0	42	ciBlock **_bci_to_block;
aoqi@0	43	int _num_blocks;
aoqi@0	44	int _code_size;
aoqi@0	45
aoqi@0	46	void do_analysis();
aoqi@0	47	public:
aoqi@0	48	ciMethodBlocks(Arena *arena, ciMethod *meth);
aoqi@0	49
aoqi@0	50	ciBlock *block_containing(int bci);
aoqi@0	51	ciBlock *block(int index) { return _blocks->at(index); }
aoqi@0	52	ciBlock *make_block_at(int bci);
aoqi@0	53	ciBlock *split_block_at(int bci);
aoqi@0	54	bool is_block_start(int bci);
aoqi@0	55	int num_blocks() { return _num_blocks;}
aoqi@0	56	void clear_processed();
aoqi@0	57
aoqi@0	58	ciBlock *make_dummy_block(); // a block not associated with a bci
aoqi@0	59
aoqi@0	60	#ifndef PRODUCT
aoqi@0	61	void dump();
aoqi@0	62	#endif
aoqi@0	63	};
aoqi@0	64
aoqi@0	65	class ciBlock : public ResourceObj {
aoqi@0	66	private:
aoqi@0	67	int _idx;
aoqi@0	68	int _start_bci;
aoqi@0	69	int _limit_bci;
aoqi@0	70	int _control_bci;
aoqi@0	71	uint _flags;
aoqi@0	72	int _ex_start_bci;
aoqi@0	73	int _ex_limit_bci;
aoqi@0	74	#ifndef PRODUCT
aoqi@0	75	ciMethod *_method;
aoqi@0	76	#endif
aoqi@0	77	enum {
aoqi@0	78	Processed = (1 << 0),
aoqi@0	79	Handler = (1 << 1),
aoqi@0	80	MayThrow = (1 << 2),
aoqi@0	81	DoesJsr = (1 << 3),
aoqi@0	82	DoesRet = (1 << 4),
aoqi@0	83	RetTarget = (1 << 5),
aoqi@0	84	HasHandler = (1 << 6)
aoqi@0	85	};
aoqi@0	86
aoqi@0	87
aoqi@0	88	public:
aoqi@0	89	enum {
aoqi@0	90	fall_through_bci = -1
aoqi@0	91	};
aoqi@0	92
aoqi@0	93	ciBlock(ciMethod *method, int index, int start_bci);
aoqi@0	94	int start_bci() const { return _start_bci; }
aoqi@0	95	int limit_bci() const { return _limit_bci; }
aoqi@0	96	int control_bci() const { return _control_bci; }
aoqi@0	97	int index() const { return _idx; }
aoqi@0	98	void set_start_bci(int bci) { _start_bci = bci; }
aoqi@0	99	void set_limit_bci(int bci) { _limit_bci = bci; }
aoqi@0	100	void set_control_bci(int bci) { _control_bci = bci;}
aoqi@0	101	void set_exception_range(int start_bci, int limit_bci);
aoqi@0	102	int ex_start_bci() const { return _ex_start_bci; }
aoqi@0	103	int ex_limit_bci() const { return _ex_limit_bci; }
aoqi@0	104	bool contains(int bci) const { return start_bci() <= bci && bci < limit_bci(); }
aoqi@0	105
aoqi@0	106	// flag handling
aoqi@0	107	bool processed() const { return (_flags & Processed) != 0; }
aoqi@0	108	bool is_handler() const { return (_flags & Handler) != 0; }
aoqi@0	109	bool may_throw() const { return (_flags & MayThrow) != 0; }
aoqi@0	110	bool does_jsr() const { return (_flags & DoesJsr) != 0; }
aoqi@0	111	bool does_ret() const { return (_flags & DoesRet) != 0; }
aoqi@0	112	bool has_handler() const { return (_flags & HasHandler) != 0; }
aoqi@0	113	bool is_ret_target() const { return (_flags & RetTarget) != 0; }
aoqi@0	114	void set_processed() { _flags |= Processed; }
aoqi@0	115	void clear_processed() { _flags &= ~Processed; }
aoqi@0	116	void set_handler() { _flags |= Handler; }
aoqi@0	117	void set_may_throw() { _flags |= MayThrow; }
aoqi@0	118	void set_does_jsr() { _flags |= DoesJsr; }
aoqi@0	119	void clear_does_jsr() { _flags &= ~DoesJsr; }
aoqi@0	120	void set_does_ret() { _flags |= DoesRet; }
aoqi@0	121	void clear_does_ret() { _flags &= ~DoesRet; }
aoqi@0	122	void set_is_ret_target() { _flags |= RetTarget; }
aoqi@0	123	void set_has_handler() { _flags |= HasHandler; }
aoqi@0	124	void clear_exception_handler() { _flags &= ~Handler; _ex_start_bci = -1; _ex_limit_bci = -1; }
aoqi@0	125	#ifndef PRODUCT
aoqi@0	126	ciMethod *method() const { return _method; }
aoqi@0	127	void dump();
aoqi@0	128	void print_on(outputStream* st) const PRODUCT_RETURN;
aoqi@0	129	#endif
aoqi@0	130	};
aoqi@0	131
aoqi@0	132	#endif // SHARE_VM_CI_CIMETHODBLOCKS_HPP