1 /* 2 * Copyright (c) 1998, 2010, 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 "precompiled.hpp" 26 #include "oops/oop.inline.hpp" 27 #include "utilities/histogram.hpp" 28 29 #ifdef ASSERT 30 31 ////////////////// HistogramElement //////////////////////// 32 33 HistogramElement::HistogramElement() { 34 _count = 0; 35 } 36 37 int HistogramElement::count() { 38 return _count; 39 } 40 41 const char* HistogramElement::name() { 42 return _name; 43 } 44 45 void HistogramElement::increment_count() { 46 // We can't use the accessor :-(. 47 Atomic::inc(&_count); 48 } 49 50 int HistogramElement::compare(HistogramElement* e1,HistogramElement* e2) { 51 if(e1->count() > e2->count()) { 52 return -1; 53 } else if(e1->count() < e2->count()) { 54 return 1; 55 } 56 return 0; 57 } 58 59 void HistogramElement::print_on(outputStream* st) const { 60 st->print("%10d ",((HistogramElement*)this)->count()); 61 st->print_cr("%s",((HistogramElement*)this)->name()); 62 } 63 64 ////////////////// Histogram //////////////////////// 65 66 int Histogram::sort_helper(HistogramElement** e1, HistogramElement** e2) { 67 return (*e1)->compare(*e1,*e2); 68 } 69 70 Histogram::Histogram(const char* title,int estimatedCount) { 71 _title = title; 72 _elements = new (ResourceObj::C_HEAP) GrowableArray<HistogramElement*>(estimatedCount,true); 73 } 74 75 void Histogram::add_element(HistogramElement* element) { 76 // Note, we need to add locking ! 77 elements()->append(element); 78 } 79 80 void Histogram::print_header(outputStream* st) { 81 st->print_cr("%s",title()); 82 st->print_cr("--------------------------------------------------"); 83 } 84 85 void Histogram::print_elements(outputStream* st) { 86 elements()->sort(Histogram::sort_helper); 87 jint total = 0; 88 for(int i=0; i < elements()->length(); i++) { 89 elements()->at(i)->print(); 90 total += elements()->at(i)->count(); 91 } 92 st->print("%10d ", total); 93 st->print_cr("Total"); 94 } 95 96 void Histogram::print_on(outputStream* st) const { 97 ((Histogram*)this)->print_header(st); 98 ((Histogram*)this)->print_elements(st); 99 } 100 101 #endif