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src/share/vm/prims/jvmtiEnvThreadState.hpp@94ec88ca68e2 (annotated)

src/share/vm/prims/jvmtiEnvThreadState.hpp

Wed, 11 Jan 2012 17:34:02 -0500

author

phh

date

Wed, 11 Jan 2012 17:34:02 -0500

changeset 3427

94ec88ca68e2

parent 2314

f95d63e2154a

child 3900

d2a62e0f25eb

permissions

-rw-r--r--

7115199: Add event tracing hooks and Java Flight Recorder infrastructure
Summary: Added a nop tracing infrastructure, JFR makefile changes and other infrastructure used only by JFR.
Reviewed-by: acorn, sspitsyn
Contributed-by: markus.gronlund@oracle.com

duke@435	1	/*
stefank@2314	2	* Copyright (c) 2003, 2010, 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	*/
stefank@2314	24
stefank@2314	25	#ifndef SHARE_VM_PRIMS_JVMTIENVTHREADSTATE_HPP
stefank@2314	26	#define SHARE_VM_PRIMS_JVMTIENVTHREADSTATE_HPP
stefank@2314	27
stefank@2314	28	#include "jvmtifiles/jvmti.h"
stefank@2314	29	#include "memory/allocation.hpp"
stefank@2314	30	#include "memory/allocation.inline.hpp"
stefank@2314	31	#include "oops/instanceKlass.hpp"
stefank@2314	32	#include "prims/jvmtiEventController.hpp"
stefank@2314	33	#include "utilities/globalDefinitions.hpp"
stefank@2314	34	#include "utilities/growableArray.hpp"
duke@435	35
bobv@2036	36	class JvmtiEnv;
bobv@2036	37
duke@435	38	///////////////////////////////////////////////////////////////
duke@435	39	//
duke@435	40	// class JvmtiFramePop
duke@435	41	// Used by : JvmtiFramePops
duke@435	42	// Used by JVMTI methods: none directly.
duke@435	43	//
duke@435	44	// Wrapper class for FramePop, used in the JvmtiFramePops class.
duke@435	45	//
duke@435	46	// Two problems: 1) this isn't being used as a ValueObj class, in
duke@435	47	// several places there are constructors for it. 2) It seems like
duke@435	48	// overkill as a means to get an assert and name the geater than
duke@435	49	// operator. I'm trying to to rewrite everything.
duke@435	50
duke@435	51	class JvmtiFramePop VALUE_OBJ_CLASS_SPEC {
duke@435	52	private:
duke@435	53	// Frame number counting from BOTTOM (oldest) frame;
duke@435	54	// bottom frame == #0
duke@435	55	int _frame_number;
duke@435	56	public:
duke@435	57	JvmtiFramePop() {}
duke@435	58	JvmtiFramePop(int frame_number) {
duke@435	59	assert(frame_number >= 0, "invalid frame number");
duke@435	60	_frame_number = frame_number;
duke@435	61	}
duke@435	62
duke@435	63	int frame_number() { return _frame_number; }
duke@435	64	int above_on_stack(JvmtiFramePop& other) { return _frame_number > other._frame_number; }
duke@435	65	void print() PRODUCT_RETURN;
duke@435	66	};
duke@435	67
duke@435	68
duke@435	69	///////////////////////////////////////////////////////////////
duke@435	70	//
duke@435	71	// class JvmtiFramePops
duke@435	72	// Used by : JvmtiThreadState
duke@435	73	// Used by JVMTI methods: none directly.
duke@435	74	//
duke@435	75	// A collection of JvmtiFramePop.
duke@435	76	// It records what frames on a threads stack should post frame_pop events when they're exited.
duke@435	77	//
duke@435	78
duke@435	79	class JvmtiFramePops : public CHeapObj {
duke@435	80	private:
duke@435	81	GrowableArray<int>* _pops;
duke@435	82
duke@435	83	// should only be used by JvmtiEventControllerPrivate
duke@435	84	// to insure they only occur at safepoints.
duke@435	85	// Todo: add checks for safepoint
duke@435	86	friend class JvmtiEventControllerPrivate;
duke@435	87	void set(JvmtiFramePop& fp);
duke@435	88	void clear(JvmtiFramePop& fp);
duke@435	89	int clear_to(JvmtiFramePop& fp);
duke@435	90
duke@435	91	public:
duke@435	92	JvmtiFramePops();
duke@435	93	~JvmtiFramePops();
duke@435	94
duke@435	95	bool contains(JvmtiFramePop& fp) { return _pops->contains(fp.frame_number()); }
duke@435	96	int length() { return _pops->length(); }
duke@435	97	void print() PRODUCT_RETURN;
duke@435	98	};
duke@435	99
duke@435	100
duke@435	101	///////////////////////////////////////////////////////////////
duke@435	102	//
duke@435	103	// class JvmtiEnvThreadState
duke@435	104	//
duke@435	105	// 2. Cache of pending frame_pop_events, created by NotifyFramePop
duke@435	106	// and lazily initialized.
duke@435	107	// 3: Location of last executed instruction, used to filter out duplicate
duke@435	108	// events due to instruction rewriting.
duke@435	109
duke@435	110	class JvmtiEnvThreadState : public CHeapObj {
duke@435	111	private:
duke@435	112	friend class JvmtiEnv;
duke@435	113	JavaThread *_thread;
duke@435	114	JvmtiEnv *_env;
duke@435	115	JvmtiEnvThreadState *_next;
duke@435	116	jmethodID _current_method_id;
duke@435	117	int _current_bci;
duke@435	118	bool _breakpoint_posted;
duke@435	119	bool _single_stepping_posted;
duke@435	120	JvmtiEnvThreadEventEnable _event_enable;
duke@435	121	void *_agent_thread_local_storage_data; // per env and per thread agent allocated data.
duke@435	122
duke@435	123	// Class used to store pending framepops.
duke@435	124	// lazily initialized by get_frame_pops();
duke@435	125	JvmtiFramePops *_frame_pops;
duke@435	126
duke@435	127	inline void set_current_location(jmethodID method_id, int bci) {
duke@435	128	_current_method_id = method_id;
duke@435	129	_current_bci = bci;
duke@435	130	}
duke@435	131
duke@435	132	friend class JvmtiEnvThreadStateIterator;
duke@435	133	JvmtiEnvThreadState* next() { return _next; }
duke@435	134
duke@435	135	friend class JvmtiThreadState;
duke@435	136	void set_next(JvmtiEnvThreadState* link) { _next = link; }
duke@435	137
duke@435	138	public:
duke@435	139	JvmtiEnvThreadState(JavaThread *thread, JvmtiEnvBase *env);
duke@435	140	~JvmtiEnvThreadState();
duke@435	141
duke@435	142	bool is_enabled(jvmtiEvent event_type) { return _event_enable.is_enabled(event_type); }
duke@435	143
duke@435	144	JvmtiEnvThreadEventEnable *event_enable() { return &_event_enable; }
duke@435	145	void *get_agent_thread_local_storage_data() { return _agent_thread_local_storage_data; }
duke@435	146	void set_agent_thread_local_storage_data (void *data) { _agent_thread_local_storage_data = data; }
duke@435	147
duke@435	148
duke@435	149	// If the thread is in the given method at the given
duke@435	150	// location just return. Otherwise, reset the current location
duke@435	151	// and reset _breakpoint_posted and _single_stepping_posted.
duke@435	152	// _breakpoint_posted and _single_stepping_posted are only cleared
duke@435	153	// here.
duke@435	154	void compare_and_set_current_location(methodOop method, address location, jvmtiEvent event);
duke@435	155
duke@435	156	void clear_current_location() { set_current_location((jmethodID)NULL, 0); }
duke@435	157
duke@435	158	void reset_current_location(jvmtiEvent event, bool enabled);
duke@435	159
duke@435	160	inline void set_breakpoint_posted() { _breakpoint_posted = true; }
duke@435	161	inline void set_single_stepping_posted() {
duke@435	162	_single_stepping_posted = true;
duke@435	163	}
duke@435	164	inline bool breakpoint_posted() { return _breakpoint_posted; }
duke@435	165	inline bool single_stepping_posted() {
duke@435	166	return _single_stepping_posted;
duke@435	167	}
duke@435	168
duke@435	169	inline JavaThread *get_thread() { return _thread; }
duke@435	170	inline JvmtiEnv *get_env() { return _env; }
duke@435	171
duke@435	172	// lazily initialize _frame_pops
duke@435	173	JvmtiFramePops* get_frame_pops();
duke@435	174
duke@435	175	bool has_frame_pops();
duke@435	176
duke@435	177	// quickly test whether we should deliver a frame pop event on return from sp
duke@435	178	bool is_frame_pop(int cur_stack_depth);
duke@435	179
duke@435	180	void set_frame_pop(int frame_number);
duke@435	181	void clear_frame_pop(int frame_number);
duke@435	182	void clear_to_frame_pop(int frame_number);
duke@435	183
duke@435	184	};
duke@435	185
stefank@2314	186	#endif // SHARE_VM_PRIMS_JVMTIENVTHREADSTATE_HPP