• file
• revisions
• annotate
• diff
• comparison
• raw

src/share/vm/code/scopeDesc.hpp@a248d0be1309 (annotated)

src/share/vm/code/scopeDesc.hpp

Mon, 19 Aug 2019 10:11:31 +0200

author

neugens

date

Mon, 19 Aug 2019 10:11:31 +0200

changeset 9861

a248d0be1309

parent 4037

da91efe96a93

child 6876

710a3c8b516e

permissions

-rw-r--r--

8229401: Fix JFR code cache test failures
8223689: Add JFR Thread Sampling Support
8223690: Add JFR BiasedLock Event Support
8223691: Add JFR G1 Region Type Change Event Support
8223692: Add JFR G1 Heap Summary Event Support
Summary: Backport JFR from JDK11, additional fixes
Reviewed-by: neugens, apetushkov
Contributed-by: denghui.ddh@alibaba-inc.com

duke@435	1	/*
coleenp@4037	2	* Copyright (c) 1997, 2012, 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	#ifndef SHARE_VM_CODE_SCOPEDESC_HPP
stefank@2314	26	#define SHARE_VM_CODE_SCOPEDESC_HPP
stefank@2314	27
stefank@2314	28	#include "code/debugInfo.hpp"
stefank@2314	29	#include "code/pcDesc.hpp"
coleenp@4037	30	#include "oops/method.hpp"
stefank@2314	31	#include "utilities/growableArray.hpp"
stefank@2314	32
duke@435	33	// SimpleScopeDesc is used when all you need to extract from
coleenp@4037	34	// a given pc,nmethod pair is a Method* and a bci. This is
duke@435	35	// quite a bit faster than allocating a full ScopeDesc, but
duke@435	36	// very limited in abilities.
duke@435	37
duke@435	38	class SimpleScopeDesc : public StackObj {
duke@435	39	private:
coleenp@4037	40	Method* _method;
duke@435	41	int _bci;
duke@435	42
duke@435	43	public:
duke@435	44	SimpleScopeDesc(nmethod* code,address pc) {
duke@435	45	PcDesc* pc_desc = code->pc_desc_at(pc);
duke@435	46	assert(pc_desc != NULL, "Must be able to find matching PcDesc");
duke@435	47	DebugInfoReadStream buffer(code, pc_desc->scope_decode_offset());
duke@435	48	int ignore_sender = buffer.read_int();
coleenp@4037	49	_method = buffer.read_method();
cfang@1366	50	_bci = buffer.read_bci();
duke@435	51	}
duke@435	52
coleenp@4037	53	Method* method() { return _method; }
duke@435	54	int bci() { return _bci; }
duke@435	55	};
duke@435	56
duke@435	57	// ScopeDescs contain the information that makes source-level debugging of
duke@435	58	// nmethods possible; each scopeDesc describes a method activation
duke@435	59
duke@435	60	class ScopeDesc : public ResourceObj {
duke@435	61	public:
duke@435	62	// Constructor
kvn@1688	63	ScopeDesc(const nmethod* code, int decode_offset, int obj_decode_offset, bool reexecute, bool return_oop);
duke@435	64
duke@435	65	// Calls above, giving default value of "serialized_null" to the
duke@435	66	// "obj_decode_offset" argument. (We don't use a default argument to
duke@435	67	// avoid a .hpp-.hpp dependency.)
kvn@1688	68	ScopeDesc(const nmethod* code, int decode_offset, bool reexecute, bool return_oop);
duke@435	69
duke@435	70	// JVM state
coleenp@4037	71	Method* method() const { return _method; }
cfang@1335	72	int bci() const { return _bci; }
cfang@1335	73	bool should_reexecute() const { return _reexecute; }
kvn@1688	74	bool return_oop() const { return _return_oop; }
duke@435	75
duke@435	76	GrowableArray<ScopeValue*>* locals();
duke@435	77	GrowableArray<ScopeValue*>* expressions();
duke@435	78	GrowableArray<MonitorValue*>* monitors();
duke@435	79	GrowableArray<ScopeValue*>* objects();
duke@435	80
duke@435	81	// Stack walking, returns NULL if this is the outer most scope.
duke@435	82	ScopeDesc* sender() const;
duke@435	83
duke@435	84	// Returns where the scope was decoded
duke@435	85	int decode_offset() const { return _decode_offset; }
duke@435	86
duke@435	87	// Tells whether sender() returns NULL
duke@435	88	bool is_top() const;
duke@435	89	// Tells whether sd is equal to this
duke@435	90	bool is_equal(ScopeDesc* sd) const;
duke@435	91
duke@435	92	private:
duke@435	93	// Alternative constructor
duke@435	94	ScopeDesc(const ScopeDesc* parent);
duke@435	95
duke@435	96	// JVM state
coleenp@4037	97	Method* _method;
duke@435	98	int _bci;
cfang@1335	99	bool _reexecute;
kvn@1688	100	bool _return_oop;
duke@435	101
duke@435	102	// Decoding offsets
duke@435	103	int _decode_offset;
duke@435	104	int _sender_decode_offset;
duke@435	105	int _locals_decode_offset;
duke@435	106	int _expressions_decode_offset;
duke@435	107	int _monitors_decode_offset;
duke@435	108
duke@435	109	// Object pool
duke@435	110	GrowableArray<ScopeValue*>* _objects;
duke@435	111
duke@435	112	// Nmethod information
duke@435	113	const nmethod* _code;
duke@435	114
duke@435	115	// Decoding operations
duke@435	116	void decode_body();
duke@435	117	GrowableArray<ScopeValue*>* decode_scope_values(int decode_offset);
duke@435	118	GrowableArray<MonitorValue*>* decode_monitor_values(int decode_offset);
duke@435	119	GrowableArray<ScopeValue*>* decode_object_values(int decode_offset);
duke@435	120
duke@435	121	DebugInfoReadStream* stream_at(int decode_offset) const;
duke@435	122
duke@435	123
duke@435	124	public:
duke@435	125	// Verification
duke@435	126	void verify();
duke@435	127
duke@435	128	#ifndef PRODUCT
duke@435	129	public:
duke@435	130	// Printing support
duke@435	131	void print_on(outputStream* st) const;
duke@435	132	void print_on(outputStream* st, PcDesc* pd) const;
duke@435	133	void print_value_on(outputStream* st) const;
duke@435	134	#endif
duke@435	135	};
stefank@2314	136
stefank@2314	137	#endif // SHARE_VM_CODE_SCOPEDESC_HPP