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src/share/vm/utilities/histogram.cpp@f4f596978298 (annotated)

src/share/vm/utilities/histogram.cpp

Mon, 09 Aug 2010 17:51:56 -0700

author

never

date

Mon, 09 Aug 2010 17:51:56 -0700

changeset 2044

f4f596978298

parent 1907

c18cbe5936b8

child 2314

f95d63e2154a

permissions

-rw-r--r--

Merge

duke@435	1	/*
trims@1907	2	* Copyright (c) 1998, 2004, 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	# include "incls/_precompiled.incl"
duke@435	26	# include "incls/_histogram.cpp.incl"
duke@435	27
duke@435	28	#ifdef ASSERT
duke@435	29
duke@435	30	////////////////// HistogramElement ////////////////////////
duke@435	31
duke@435	32	HistogramElement::HistogramElement() {
duke@435	33	_count = 0;
duke@435	34	}
duke@435	35
duke@435	36	int HistogramElement::count() {
duke@435	37	return _count;
duke@435	38	}
duke@435	39
duke@435	40	const char* HistogramElement::name() {
duke@435	41	return _name;
duke@435	42	}
duke@435	43
duke@435	44	void HistogramElement::increment_count() {
duke@435	45	// We can't use the accessor :-(.
duke@435	46	Atomic::inc(&_count);
duke@435	47	}
duke@435	48
duke@435	49	int HistogramElement::compare(HistogramElement* e1,HistogramElement* e2) {
duke@435	50	if(e1->count() > e2->count()) {
duke@435	51	return -1;
duke@435	52	} else if(e1->count() < e2->count()) {
duke@435	53	return 1;
duke@435	54	}
duke@435	55	return 0;
duke@435	56	}
duke@435	57
duke@435	58	void HistogramElement::print_on(outputStream* st) const {
duke@435	59	st->print("%10d ",((HistogramElement*)this)->count());
duke@435	60	st->print_cr("%s",((HistogramElement*)this)->name());
duke@435	61	}
duke@435	62
duke@435	63	////////////////// Histogram ////////////////////////
duke@435	64
duke@435	65	int Histogram::sort_helper(HistogramElement** e1, HistogramElement** e2) {
duke@435	66	return (*e1)->compare(*e1,*e2);
duke@435	67	}
duke@435	68
duke@435	69	Histogram::Histogram(const char* title,int estimatedCount) {
duke@435	70	_title = title;
duke@435	71	_elements = new (ResourceObj::C_HEAP) GrowableArray<HistogramElement*>(estimatedCount,true);
duke@435	72	}
duke@435	73
duke@435	74	void Histogram::add_element(HistogramElement* element) {
duke@435	75	// Note, we need to add locking !
duke@435	76	elements()->append(element);
duke@435	77	}
duke@435	78
duke@435	79	void Histogram::print_header(outputStream* st) {
duke@435	80	st->print_cr("%s",title());
duke@435	81	st->print_cr("--------------------------------------------------");
duke@435	82	}
duke@435	83
duke@435	84	void Histogram::print_elements(outputStream* st) {
duke@435	85	elements()->sort(Histogram::sort_helper);
duke@435	86	jint total = 0;
duke@435	87	for(int i=0; i < elements()->length(); i++) {
duke@435	88	elements()->at(i)->print();
duke@435	89	total += elements()->at(i)->count();
duke@435	90	}
duke@435	91	st->print("%10d ", total);
duke@435	92	st->print_cr("Total");
duke@435	93	}
duke@435	94
duke@435	95	void Histogram::print_on(outputStream* st) const {
duke@435	96	((Histogram*)this)->print_header(st);
duke@435	97	((Histogram*)this)->print_elements(st);
duke@435	98	}
duke@435	99
duke@435	100	#endif