1 /* 2 * Copyright (c) 1998, 2004, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 # include "incls/_precompiled.incl" 26 # include "incls/_histogram.cpp.incl" 27 28 #ifdef ASSERT 29 30 ////////////////// HistogramElement //////////////////////// 31 32 HistogramElement::HistogramElement() { 33 _count = 0; 34 } 35 36 int HistogramElement::count() { 37 return _count; 38 } 39 40 const char* HistogramElement::name() { 41 return _name; 42 } 43 44 void HistogramElement::increment_count() { 45 // We can't use the accessor :-(. 46 Atomic::inc(&_count); 47 } 48 49 int HistogramElement::compare(HistogramElement* e1,HistogramElement* e2) { 50 if(e1->count() > e2->count()) { 51 return -1; 52 } else if(e1->count() < e2->count()) { 53 return 1; 54 } 55 return 0; 56 } 57 58 void HistogramElement::print_on(outputStream* st) const { 59 st->print("%10d ",((HistogramElement*)this)->count()); 60 st->print_cr("%s",((HistogramElement*)this)->name()); 61 } 62 63 ////////////////// Histogram //////////////////////// 64 65 int Histogram::sort_helper(HistogramElement** e1, HistogramElement** e2) { 66 return (*e1)->compare(*e1,*e2); 67 } 68 69 Histogram::Histogram(const char* title,int estimatedCount) { 70 _title = title; 71 _elements = new (ResourceObj::C_HEAP) GrowableArray<HistogramElement*>(estimatedCount,true); 72 } 73 74 void Histogram::add_element(HistogramElement* element) { 75 // Note, we need to add locking ! 76 elements()->append(element); 77 } 78 79 void Histogram::print_header(outputStream* st) { 80 st->print_cr("%s",title()); 81 st->print_cr("--------------------------------------------------"); 82 } 83 84 void Histogram::print_elements(outputStream* st) { 85 elements()->sort(Histogram::sort_helper); 86 jint total = 0; 87 for(int i=0; i < elements()->length(); i++) { 88 elements()->at(i)->print(); 89 total += elements()->at(i)->count(); 90 } 91 st->print("%10d ", total); 92 st->print_cr("Total"); 93 } 94 95 void Histogram::print_on(outputStream* st) const { 96 ((Histogram*)this)->print_header(st); 97 ((Histogram*)this)->print_elements(st); 98 } 99 100 #endif