duke@435: /*
stefank@2314:  * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #include "precompiled.hpp"
stefank@2314: #include "oops/oop.inline.hpp"
stefank@2314: #include "utilities/histogram.hpp"
duke@435: 
duke@435: #ifdef ASSERT
duke@435: 
duke@435: ////////////////// HistogramElement ////////////////////////
duke@435: 
duke@435: HistogramElement::HistogramElement() {
duke@435:   _count = 0;
duke@435: }
duke@435: 
duke@435: int HistogramElement::count() {
duke@435:   return _count;
duke@435: }
duke@435: 
duke@435: const char* HistogramElement::name() {
duke@435:   return _name;
duke@435: }
duke@435: 
duke@435: void HistogramElement::increment_count() {
duke@435:   // We can't use the accessor :-(.
duke@435:   Atomic::inc(&_count);
duke@435: }
duke@435: 
duke@435: int HistogramElement::compare(HistogramElement* e1,HistogramElement* e2) {
duke@435:   if(e1->count() > e2->count()) {
duke@435:     return -1;
duke@435:   } else if(e1->count() < e2->count()) {
duke@435:     return 1;
duke@435:   }
duke@435:   return 0;
duke@435: }
duke@435: 
duke@435: void HistogramElement::print_on(outputStream* st) const {
duke@435:   st->print("%10d   ",((HistogramElement*)this)->count());
duke@435:   st->print_cr("%s",((HistogramElement*)this)->name());
duke@435: }
duke@435: 
duke@435: ////////////////// Histogram ////////////////////////
duke@435: 
duke@435: int Histogram::sort_helper(HistogramElement** e1, HistogramElement** e2) {
duke@435:   return (*e1)->compare(*e1,*e2);
duke@435: }
duke@435: 
duke@435: Histogram::Histogram(const char* title,int estimatedCount) {
duke@435:   _title = title;
duke@435:   _elements = new (ResourceObj::C_HEAP) GrowableArray<HistogramElement*>(estimatedCount,true);
duke@435: }
duke@435: 
duke@435: void Histogram::add_element(HistogramElement* element) {
duke@435:   // Note, we need to add locking !
duke@435:   elements()->append(element);
duke@435: }
duke@435: 
duke@435: void Histogram::print_header(outputStream* st) {
duke@435:   st->print_cr("%s",title());
duke@435:   st->print_cr("--------------------------------------------------");
duke@435: }
duke@435: 
duke@435: void Histogram::print_elements(outputStream* st) {
duke@435:   elements()->sort(Histogram::sort_helper);
duke@435:   jint total = 0;
duke@435:   for(int i=0; i < elements()->length(); i++) {
duke@435:     elements()->at(i)->print();
duke@435:     total += elements()->at(i)->count();
duke@435:   }
duke@435:   st->print("%10d   ", total);
duke@435:   st->print_cr("Total");
duke@435: }
duke@435: 
duke@435: void Histogram::print_on(outputStream* st) const {
duke@435:   ((Histogram*)this)->print_header(st);
duke@435:   ((Histogram*)this)->print_elements(st);
duke@435: }
duke@435: 
duke@435: #endif