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src/share/vm/runtime/aprofiler.cpp@b2dbd323c668 (annotated)

src/share/vm/runtime/aprofiler.cpp

Tue, 27 Nov 2012 17:03:56 -0500

author

jiangli

date

Tue, 27 Nov 2012 17:03:56 -0500

changeset 4302

b2dbd323c668

parent 4037

da91efe96a93

child 4465

203f64878aab

permissions

-rw-r--r--

8003848: Make ConstMethod::generic_signature_index optional and move Method::_max_stack to ConstMethod.
Summary: Make ConstMethod::generic_signature_index optional and move Method::_max_stack to ConstMethod.
Reviewed-by: bdelsart, sspitsyn, coleenp

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	#include "precompiled.hpp"
stefank@2314	26	#include "classfile/systemDictionary.hpp"
stefank@2314	27	#include "gc_interface/collectedHeap.inline.hpp"
stefank@2314	28	#include "memory/resourceArea.hpp"
stefank@2314	29	#include "memory/space.hpp"
stefank@2314	30	#include "oops/oop.inline.hpp"
stefank@2314	31	#include "oops/oop.inline2.hpp"
stefank@2314	32	#include "runtime/aprofiler.hpp"
duke@435	33
duke@435	34
duke@435	35	bool AllocationProfiler::_active = false;
coleenp@4037	36	GrowableArray<Klass*>* AllocationProfiler::_print_array = NULL;
duke@435	37
duke@435	38
duke@435	39	class AllocProfClosure : public ObjectClosure {
duke@435	40	public:
duke@435	41	void do_object(oop obj) {
coleenp@4037	42	Klass* k = obj->klass();
duke@435	43	k->set_alloc_count(k->alloc_count() + 1);
duke@435	44	k->set_alloc_size(k->alloc_size() + obj->size());
duke@435	45	}
duke@435	46	};
duke@435	47
duke@435	48
duke@435	49	void AllocationProfiler::iterate_since_last_gc() {
duke@435	50	if (is_active()) {
duke@435	51	AllocProfClosure blk;
duke@435	52	GenCollectedHeap* heap = GenCollectedHeap::heap();
duke@435	53	heap->object_iterate_since_last_GC(&blk);
duke@435	54	}
duke@435	55	}
duke@435	56
duke@435	57
duke@435	58	void AllocationProfiler::engage() {
duke@435	59	_active = true;
duke@435	60	}
duke@435	61
duke@435	62
duke@435	63	void AllocationProfiler::disengage() {
duke@435	64	_active = false;
duke@435	65	}
duke@435	66
duke@435	67
coleenp@4037	68	void AllocationProfiler::add_class_to_array(Klass* k) {
duke@435	69	_print_array->append(k);
duke@435	70	}
duke@435	71
duke@435	72
coleenp@4037	73	void AllocationProfiler::add_classes_to_array(Klass* k) {
duke@435	74	// Iterate over klass and all array klasses for klass
coleenp@4037	75	k->with_array_klasses_do(&AllocationProfiler::add_class_to_array);
duke@435	76	}
duke@435	77
duke@435	78
coleenp@4037	79	int AllocationProfiler::compare_classes(Klass** k1, Klass** k2) {
duke@435	80	// Sort by total allocation size
coleenp@4037	81	return (*k2)->alloc_size() - (*k1)->alloc_size();
duke@435	82	}
duke@435	83
duke@435	84
duke@435	85	int AllocationProfiler::average(size_t alloc_size, int alloc_count) {
duke@435	86	return (int) ((double) (alloc_size * BytesPerWord) / MAX2(alloc_count, 1) + 0.5);
duke@435	87	}
duke@435	88
duke@435	89
duke@435	90	void AllocationProfiler::sort_and_print_array(size_t cutoff) {
duke@435	91	_print_array->sort(&AllocationProfiler::compare_classes);
duke@435	92	tty->print_cr("________________Size"
duke@435	93	"__Instances"
duke@435	94	"__Average"
duke@435	95	"__Class________________");
duke@435	96	size_t total_alloc_size = 0;
duke@435	97	int total_alloc_count = 0;
duke@435	98	for (int index = 0; index < _print_array->length(); index++) {
coleenp@4037	99	Klass* k = _print_array->at(index);
coleenp@4037	100	size_t alloc_size = k->alloc_size();
duke@435	101	if (alloc_size > cutoff) {
coleenp@4037	102	int alloc_count = k->alloc_count();
duke@435	103	#ifdef PRODUCT
coleenp@4037	104	const char* name = k->external_name();
duke@435	105	#else
coleenp@4037	106	const char* name = k->internal_name();
duke@435	107	#endif
duke@435	108	tty->print_cr("%20u %10u %8u %s",
duke@435	109	alloc_size * BytesPerWord,
duke@435	110	alloc_count,
duke@435	111	average(alloc_size, alloc_count),
duke@435	112	name);
duke@435	113	total_alloc_size += alloc_size;
duke@435	114	total_alloc_count += alloc_count;
duke@435	115	}
coleenp@4037	116	k->set_alloc_count(0);
coleenp@4037	117	k->set_alloc_size(0);
duke@435	118	}
duke@435	119	tty->print_cr("%20u %10u %8u --total--",
duke@435	120	total_alloc_size * BytesPerWord,
duke@435	121	total_alloc_count,
duke@435	122	average(total_alloc_size, total_alloc_count));
duke@435	123	tty->cr();
duke@435	124	}
duke@435	125
duke@435	126
duke@435	127	void AllocationProfiler::print(size_t cutoff) {
duke@435	128	ResourceMark rm;
duke@435	129	assert(!is_active(), "AllocationProfiler cannot be active while printing profile");
duke@435	130
duke@435	131	tty->cr();
duke@435	132	tty->print_cr("Allocation profile (sizes in bytes, cutoff = %ld bytes):", cutoff * BytesPerWord);
duke@435	133	tty->cr();
duke@435	134
duke@435	135	// Print regular instance klasses and basic type array klasses
coleenp@4037	136	_print_array = new GrowableArray<Klass*>(SystemDictionary::number_of_classes()*2);
duke@435	137	SystemDictionary::classes_do(&add_classes_to_array);
duke@435	138	Universe::basic_type_classes_do(&add_classes_to_array);
duke@435	139	sort_and_print_array(cutoff);
duke@435	140
coleenp@4037	141	// This used to print metadata in the permgen but since there isn't a permgen
coleenp@4037	142	// anymore, it is not yet implemented.
duke@435	143	}