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src/share/vm/prims/jvmtiTagMap.hpp@8b46b0196eb0 (annotated)

src/share/vm/prims/jvmtiTagMap.hpp

Fri, 25 Jan 2013 10:04:08 -0500

author

zgu

date

Fri, 25 Jan 2013 10:04:08 -0500

changeset 4492

8b46b0196eb0

parent 4167

9855b7e559ae

child 6876

710a3c8b516e

permissions

-rw-r--r--

8000692: Remove old KERNEL code
Summary: Removed depreciated kernel VM source code from hotspot VM
Reviewed-by: dholmes, acorn

duke@435	1	/*
zgu@4492	2	* Copyright (c) 2003, 2013, 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
duke@435	25	// JvmtiTagMap
duke@435	26
stefank@2314	27	#ifndef SHARE_VM_PRIMS_JVMTITAGMAP_HPP
stefank@2314	28	#define SHARE_VM_PRIMS_JVMTITAGMAP_HPP
stefank@2314	29
stefank@2314	30	#include "gc_interface/collectedHeap.hpp"
stefank@2314	31	#include "jvmtifiles/jvmti.h"
stefank@2314	32	#include "jvmtifiles/jvmtiEnv.hpp"
stefank@2314	33	#include "memory/allocation.hpp"
stefank@2314	34	#include "memory/genCollectedHeap.hpp"
stefank@2314	35	#include "memory/universe.hpp"
duke@435	36
duke@435	37	// forward references
duke@435	38	class JvmtiTagHashmap;
duke@435	39	class JvmtiTagHashmapEntry;
duke@435	40	class JvmtiTagHashmapEntryClosure;
duke@435	41
zgu@3900	42	class JvmtiTagMap : public CHeapObj<mtInternal> {
duke@435	43	private:
duke@435	44
duke@435	45	enum{
kamg@2445	46	max_free_entries = 4096 // maximum number of free entries per env
duke@435	47	};
duke@435	48
duke@435	49	JvmtiEnv* _env; // the jvmti environment
duke@435	50	Mutex _lock; // lock for this tag map
kamg@2445	51	JvmtiTagHashmap* _hashmap; // the hashmap
duke@435	52
duke@435	53	JvmtiTagHashmapEntry* _free_entries; // free list for this environment
duke@435	54	int _free_entries_count; // number of entries on the free list
duke@435	55
duke@435	56	// create a tag map
duke@435	57	JvmtiTagMap(JvmtiEnv* env);
duke@435	58
duke@435	59	// accessors
duke@435	60	inline Mutex* lock() { return &_lock; }
duke@435	61	inline JvmtiEnv* env() const { return _env; }
duke@435	62
kamg@2445	63	void do_weak_oops(BoolObjectClosure* is_alive, OopClosure* f);
duke@435	64
duke@435	65	// iterate over all entries in this tag map
duke@435	66	void entry_iterate(JvmtiTagHashmapEntryClosure* closure);
duke@435	67
duke@435	68	public:
duke@435	69
duke@435	70	// indicates if this tag map is locked
duke@435	71	bool is_locked() { return lock()->is_locked(); }
duke@435	72
kamg@2445	73	JvmtiTagHashmap* hashmap() { return _hashmap; }
duke@435	74
duke@435	75	// create/destroy entries
kamg@2445	76	JvmtiTagHashmapEntry* create_entry(oop ref, jlong tag);
duke@435	77	void destroy_entry(JvmtiTagHashmapEntry* entry);
duke@435	78
duke@435	79	// returns true if the hashmaps are empty
duke@435	80	bool is_empty();
duke@435	81
duke@435	82	// return tag for the given environment
duke@435	83	static JvmtiTagMap* tag_map_for(JvmtiEnv* env);
duke@435	84
duke@435	85	// destroy tag map
duke@435	86	~JvmtiTagMap();
duke@435	87
duke@435	88	// set/get tag
duke@435	89	void set_tag(jobject obj, jlong tag);
duke@435	90	jlong get_tag(jobject obj);
duke@435	91
duke@435	92	// deprecated heap iteration functions
duke@435	93	void iterate_over_heap(jvmtiHeapObjectFilter object_filter,
duke@435	94	KlassHandle klass,
duke@435	95	jvmtiHeapObjectCallback heap_object_callback,
duke@435	96	const void* user_data);
duke@435	97
duke@435	98	void iterate_over_reachable_objects(jvmtiHeapRootCallback heap_root_callback,
duke@435	99	jvmtiStackReferenceCallback stack_ref_callback,
duke@435	100	jvmtiObjectReferenceCallback object_ref_callback,
duke@435	101	const void* user_data);
duke@435	102
duke@435	103	void iterate_over_objects_reachable_from_object(jobject object,
duke@435	104	jvmtiObjectReferenceCallback object_reference_callback,
duke@435	105	const void* user_data);
duke@435	106
duke@435	107
duke@435	108	// advanced (JVMTI 1.1) heap iteration functions
duke@435	109	void iterate_through_heap(jint heap_filter,
duke@435	110	KlassHandle klass,
duke@435	111	const jvmtiHeapCallbacks* callbacks,
duke@435	112	const void* user_data);
duke@435	113
duke@435	114	void follow_references(jint heap_filter,
duke@435	115	KlassHandle klass,
duke@435	116	jobject initial_object,
duke@435	117	const jvmtiHeapCallbacks* callbacks,
duke@435	118	const void* user_data);
duke@435	119
duke@435	120	// get tagged objects
duke@435	121	jvmtiError get_objects_with_tags(const jlong* tags, jint count,
duke@435	122	jint* count_ptr, jobject** object_result_ptr,
duke@435	123	jlong** tag_result_ptr);
duke@435	124
kamg@2445	125	static void weak_oops_do(
jprovino@4165	126	BoolObjectClosure* is_alive, OopClosure* f) NOT_JVMTI_RETURN;
duke@435	127	};
duke@435	128
stefank@2314	129	#endif // SHARE_VM_PRIMS_JVMTITAGMAP_HPP