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src/share/vm/utilities/histogram.cpp@710a3c8b516e (annotated)

src/share/vm/utilities/histogram.cpp

Tue, 08 Aug 2017 15:57:29 +0800

author

aoqi

date

Tue, 08 Aug 2017 15:57:29 +0800

changeset 6876

710a3c8b516e

parent 4153

b9a9ed0f8eeb

parent 0

f90c822e73f8

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#include "precompiled.hpp"
aoqi@0	26	#include "oops/oop.inline.hpp"
aoqi@0	27	#include "utilities/histogram.hpp"
aoqi@0	28
aoqi@0	29	#ifdef ASSERT
aoqi@0	30
aoqi@0	31	////////////////// HistogramElement ////////////////////////
aoqi@0	32
aoqi@0	33	HistogramElement::HistogramElement() {
aoqi@0	34	_count = 0;
aoqi@0	35	}
aoqi@0	36
aoqi@0	37	int HistogramElement::count() {
aoqi@0	38	return _count;
aoqi@0	39	}
aoqi@0	40
aoqi@0	41	const char* HistogramElement::name() {
aoqi@0	42	return _name;
aoqi@0	43	}
aoqi@0	44
aoqi@0	45	void HistogramElement::increment_count() {
aoqi@0	46	// We can't use the accessor :-(.
aoqi@0	47	Atomic::inc(&_count);
aoqi@0	48	}
aoqi@0	49
aoqi@0	50	int HistogramElement::compare(HistogramElement* e1,HistogramElement* e2) {
aoqi@0	51	if(e1->count() > e2->count()) {
aoqi@0	52	return -1;
aoqi@0	53	} else if(e1->count() < e2->count()) {
aoqi@0	54	return 1;
aoqi@0	55	}
aoqi@0	56	return 0;
aoqi@0	57	}
aoqi@0	58
aoqi@0	59	void HistogramElement::print_on(outputStream* st) const {
aoqi@0	60	st->print("%10d ",((HistogramElement*)this)->count());
aoqi@0	61	st->print_cr("%s",((HistogramElement*)this)->name());
aoqi@0	62	}
aoqi@0	63
aoqi@0	64	////////////////// Histogram ////////////////////////
aoqi@0	65
aoqi@0	66	int Histogram::sort_helper(HistogramElement** e1, HistogramElement** e2) {
aoqi@0	67	return (*e1)->compare(*e1,*e2);
aoqi@0	68	}
aoqi@0	69
aoqi@0	70	Histogram::Histogram(const char* title,int estimatedCount) {
aoqi@0	71	_title = title;
aoqi@0	72	_elements = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<HistogramElement*>(estimatedCount,true);
aoqi@0	73	}
aoqi@0	74
aoqi@0	75	void Histogram::add_element(HistogramElement* element) {
aoqi@0	76	// Note, we need to add locking !
aoqi@0	77	elements()->append(element);
aoqi@0	78	}
aoqi@0	79
aoqi@0	80	void Histogram::print_header(outputStream* st) {
aoqi@0	81	st->print_cr("%s",title());
aoqi@0	82	st->print_cr("--------------------------------------------------");
aoqi@0	83	}
aoqi@0	84
aoqi@0	85	void Histogram::print_elements(outputStream* st) {
aoqi@0	86	elements()->sort(Histogram::sort_helper);
aoqi@0	87	jint total = 0;
aoqi@0	88	for(int i=0; i < elements()->length(); i++) {
aoqi@0	89	elements()->at(i)->print();
aoqi@0	90	total += elements()->at(i)->count();
aoqi@0	91	}
aoqi@0	92	st->print("%10d ", total);
aoqi@0	93	st->print_cr("Total");
aoqi@0	94	}
aoqi@0	95
aoqi@0	96	void Histogram::print_on(outputStream* st) const {
aoqi@0	97	((Histogram*)this)->print_header(st);
aoqi@0	98	((Histogram*)this)->print_elements(st);
aoqi@0	99	}
aoqi@0	100
aoqi@0	101	#endif