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src/share/vm/services/classLoadingService.hpp@fb57d4cf76c2 (annotated)

src/share/vm/services/classLoadingService.hpp

Tue, 11 May 2010 14:35:43 -0700

author

prr

date

Tue, 11 May 2010 14:35:43 -0700

changeset 1840

fb57d4cf76c2

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6931180: Migration to recent versions of MS Platform SDK
6951582: Build problems on win64
Summary: Changes to enable building JDK7 with Microsoft Visual Studio 2010
Reviewed-by: ohair, art, ccheung, dcubed

duke@435	1	/*
duke@435	2	* Copyright 2003-2005 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	class instanceKlass;
duke@435	26
duke@435	27	// VM monitoring and management support for the Class Loading subsystem
duke@435	28	class ClassLoadingService : public AllStatic {
duke@435	29	private:
duke@435	30	// Counters for classes loaded from class files
duke@435	31	static PerfCounter* _classes_loaded_count;
duke@435	32	static PerfCounter* _classes_unloaded_count;
duke@435	33	static PerfCounter* _classbytes_loaded;
duke@435	34	static PerfCounter* _classbytes_unloaded;
duke@435	35
duke@435	36	// Counters for classes loaded from shared archive
duke@435	37	static PerfCounter* _shared_classes_loaded_count;
duke@435	38	static PerfCounter* _shared_classes_unloaded_count;
duke@435	39	static PerfCounter* _shared_classbytes_loaded;
duke@435	40	static PerfCounter* _shared_classbytes_unloaded;
duke@435	41
duke@435	42	static PerfVariable* _class_methods_size;
duke@435	43
duke@435	44	static size_t compute_class_size(instanceKlass* k);
duke@435	45
duke@435	46	public:
duke@435	47	static void init();
duke@435	48
duke@435	49	static bool get_verbose() { return TraceClassLoading; }
duke@435	50	static bool set_verbose(bool verbose);
duke@435	51	static void reset_trace_class_unloading();
duke@435	52
duke@435	53	static jlong loaded_class_count() {
duke@435	54	return _classes_loaded_count->get_value() + _shared_classes_loaded_count->get_value();
duke@435	55	}
duke@435	56	static jlong unloaded_class_count() {
duke@435	57	return _classes_unloaded_count->get_value() + _shared_classes_unloaded_count->get_value();
duke@435	58	}
duke@435	59	static jlong loaded_class_bytes() {
duke@435	60	if (UsePerfData) {
duke@435	61	return _classbytes_loaded->get_value() + _shared_classbytes_loaded->get_value();
duke@435	62	} else {
duke@435	63	return -1;
duke@435	64	}
duke@435	65	}
duke@435	66	static jlong unloaded_class_bytes() {
duke@435	67	if (UsePerfData) {
duke@435	68	return _classbytes_unloaded->get_value() + _shared_classbytes_unloaded->get_value();
duke@435	69	} else {
duke@435	70	return -1;
duke@435	71	}
duke@435	72	}
duke@435	73
duke@435	74	static jlong loaded_shared_class_count() {
duke@435	75	return _shared_classes_loaded_count->get_value();
duke@435	76	}
duke@435	77	static jlong unloaded_shared_class_count() {
duke@435	78	return _shared_classes_unloaded_count->get_value();
duke@435	79	}
duke@435	80	static jlong loaded_shared_class_bytes() {
duke@435	81	if (UsePerfData) {
duke@435	82	return _shared_classbytes_loaded->get_value();
duke@435	83	} else {
duke@435	84	return -1;
duke@435	85	}
duke@435	86	}
duke@435	87	static jlong unloaded_shared_class_bytes() {
duke@435	88	if (UsePerfData) {
duke@435	89	return _shared_classbytes_unloaded->get_value();
duke@435	90	} else {
duke@435	91	return -1;
duke@435	92	}
duke@435	93	}
duke@435	94	static jlong class_method_data_size() {
duke@435	95	return (UsePerfData ? _class_methods_size->get_value() : -1);
duke@435	96	}
duke@435	97
duke@435	98	static void notify_class_loaded(instanceKlass* k, bool shared_class);
duke@435	99	// All unloaded classes are non-shared
duke@435	100	static void notify_class_unloaded(instanceKlass* k);
duke@435	101	static void add_class_method_size(int size) {
duke@435	102	if (UsePerfData) {
duke@435	103	_class_methods_size->inc(size);
duke@435	104	}
duke@435	105	}
duke@435	106	};
duke@435	107
duke@435	108	// FIXME: make this piece of code to be shared by M&M and JVMTI
duke@435	109	class LoadedClassesEnumerator : public StackObj {
duke@435	110	private:
duke@435	111	static GrowableArray<KlassHandle>* _loaded_classes;
duke@435	112	// _current_thread is for creating a KlassHandle with a faster version constructor
duke@435	113	static Thread* _current_thread;
duke@435	114
duke@435	115	GrowableArray<KlassHandle>* _klass_handle_array;
duke@435	116
duke@435	117	public:
duke@435	118	LoadedClassesEnumerator(Thread* cur_thread);
duke@435	119
duke@435	120	int num_loaded_classes() { return _klass_handle_array->length(); }
duke@435	121	KlassHandle get_klass(int index) { return _klass_handle_array->at(index); }
duke@435	122
duke@435	123	static void add_loaded_class(klassOop k) {
duke@435	124	// FIXME: For now - don't include array klasses
duke@435	125	// The spec is unclear at this point to count array klasses or not
duke@435	126	// and also indirect creation of array of super class and secondaries
duke@435	127	//
duke@435	128	// for (klassOop l = k; l != NULL; l = Klass::cast(l)->array_klass_or_null()) {
duke@435	129	// KlassHandle h(_current_thread, l);
duke@435	130	// _loaded_classes->append(h);
duke@435	131	// }
duke@435	132	KlassHandle h(_current_thread, k);
duke@435	133	_loaded_classes->append(h);
duke@435	134	}
duke@435	135	};