| /* |
| * Copyright (c) 1998, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "runtime/atomic.hpp" |
| #include "utilities/histogram.hpp" |
| |
| #ifdef ASSERT |
| |
| ////////////////// HistogramElement //////////////////////// |
| |
| HistogramElement::HistogramElement() { |
| _count = 0; |
| } |
| |
| int HistogramElement::count() { |
| return _count; |
| } |
| |
| const char* HistogramElement::name() { |
| return _name; |
| } |
| |
| void HistogramElement::increment_count() { |
| // We can't use the accessor :-(. |
| Atomic::inc(&_count); |
| } |
| |
| int HistogramElement::compare(HistogramElement* e1,HistogramElement* e2) { |
| if(e1->count() > e2->count()) { |
| return -1; |
| } else if(e1->count() < e2->count()) { |
| return 1; |
| } |
| return 0; |
| } |
| |
| void HistogramElement::print_on(outputStream* st) const { |
| st->print("%10d ",((HistogramElement*)this)->count()); |
| st->print_cr("%s",((HistogramElement*)this)->name()); |
| } |
| |
| ////////////////// Histogram //////////////////////// |
| |
| int Histogram::sort_helper(HistogramElement** e1, HistogramElement** e2) { |
| return (*e1)->compare(*e1,*e2); |
| } |
| |
| Histogram::Histogram(const char* title,int estimatedCount) { |
| _title = title; |
| _elements = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<HistogramElement*>(estimatedCount,true); |
| } |
| |
| void Histogram::add_element(HistogramElement* element) { |
| // Note, we need to add locking ! |
| elements()->append(element); |
| } |
| |
| void Histogram::print_header(outputStream* st) { |
| st->print_cr("%s",title()); |
| st->print_cr("--------------------------------------------------"); |
| } |
| |
| void Histogram::print_elements(outputStream* st) { |
| elements()->sort(Histogram::sort_helper); |
| jint total = 0; |
| for(int i=0; i < elements()->length(); i++) { |
| elements()->at(i)->print(); |
| total += elements()->at(i)->count(); |
| } |
| st->print("%10d ", total); |
| st->print_cr("Total"); |
| } |
| |
| void Histogram::print_on(outputStream* st) const { |
| ((Histogram*)this)->print_header(st); |
| ((Histogram*)this)->print_elements(st); |
| } |
| |
| #endif |