aoqi@0: /*
aoqi@0:  * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #include "precompiled.hpp"
aoqi@0: #include "oops/oop.inline.hpp"
aoqi@0: #include "utilities/histogram.hpp"
aoqi@0: 
aoqi@0: #ifdef ASSERT
aoqi@0: 
aoqi@0: ////////////////// HistogramElement ////////////////////////
aoqi@0: 
aoqi@0: HistogramElement::HistogramElement() {
aoqi@0:   _count = 0;
aoqi@0: }
aoqi@0: 
aoqi@0: int HistogramElement::count() {
aoqi@0:   return _count;
aoqi@0: }
aoqi@0: 
aoqi@0: const char* HistogramElement::name() {
aoqi@0:   return _name;
aoqi@0: }
aoqi@0: 
aoqi@0: void HistogramElement::increment_count() {
aoqi@0:   // We can't use the accessor :-(.
aoqi@0:   Atomic::inc(&_count);
aoqi@0: }
aoqi@0: 
aoqi@0: int HistogramElement::compare(HistogramElement* e1,HistogramElement* e2) {
aoqi@0:   if(e1->count() > e2->count()) {
aoqi@0:     return -1;
aoqi@0:   } else if(e1->count() < e2->count()) {
aoqi@0:     return 1;
aoqi@0:   }
aoqi@0:   return 0;
aoqi@0: }
aoqi@0: 
aoqi@0: void HistogramElement::print_on(outputStream* st) const {
aoqi@0:   st->print("%10d   ",((HistogramElement*)this)->count());
aoqi@0:   st->print_cr("%s",((HistogramElement*)this)->name());
aoqi@0: }
aoqi@0: 
aoqi@0: ////////////////// Histogram ////////////////////////
aoqi@0: 
aoqi@0: int Histogram::sort_helper(HistogramElement** e1, HistogramElement** e2) {
aoqi@0:   return (*e1)->compare(*e1,*e2);
aoqi@0: }
aoqi@0: 
aoqi@0: Histogram::Histogram(const char* title,int estimatedCount) {
aoqi@0:   _title = title;
aoqi@0:   _elements = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<HistogramElement*>(estimatedCount,true);
aoqi@0: }
aoqi@0: 
aoqi@0: void Histogram::add_element(HistogramElement* element) {
aoqi@0:   // Note, we need to add locking !
aoqi@0:   elements()->append(element);
aoqi@0: }
aoqi@0: 
aoqi@0: void Histogram::print_header(outputStream* st) {
aoqi@0:   st->print_cr("%s",title());
aoqi@0:   st->print_cr("--------------------------------------------------");
aoqi@0: }
aoqi@0: 
aoqi@0: void Histogram::print_elements(outputStream* st) {
aoqi@0:   elements()->sort(Histogram::sort_helper);
aoqi@0:   jint total = 0;
aoqi@0:   for(int i=0; i < elements()->length(); i++) {
aoqi@0:     elements()->at(i)->print();
aoqi@0:     total += elements()->at(i)->count();
aoqi@0:   }
aoqi@0:   st->print("%10d   ", total);
aoqi@0:   st->print_cr("Total");
aoqi@0: }
aoqi@0: 
aoqi@0: void Histogram::print_on(outputStream* st) const {
aoqi@0:   ((Histogram*)this)->print_header(st);
aoqi@0:   ((Histogram*)this)->print_elements(st);
aoqi@0: }
aoqi@0: 
aoqi@0: #endif