1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/utilities/histogram.cpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,101 @@
1.4 +/*
1.5 + * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#include "precompiled.hpp"
1.29 +#include "oops/oop.inline.hpp"
1.30 +#include "utilities/histogram.hpp"
1.31 +
1.32 +#ifdef ASSERT
1.33 +
1.34 +////////////////// HistogramElement ////////////////////////
1.35 +
1.36 +HistogramElement::HistogramElement() {
1.37 + _count = 0;
1.38 +}
1.39 +
1.40 +int HistogramElement::count() {
1.41 + return _count;
1.42 +}
1.43 +
1.44 +const char* HistogramElement::name() {
1.45 + return _name;
1.46 +}
1.47 +
1.48 +void HistogramElement::increment_count() {
1.49 + // We can't use the accessor :-(.
1.50 + Atomic::inc(&_count);
1.51 +}
1.52 +
1.53 +int HistogramElement::compare(HistogramElement* e1,HistogramElement* e2) {
1.54 + if(e1->count() > e2->count()) {
1.55 + return -1;
1.56 + } else if(e1->count() < e2->count()) {
1.57 + return 1;
1.58 + }
1.59 + return 0;
1.60 +}
1.61 +
1.62 +void HistogramElement::print_on(outputStream* st) const {
1.63 + st->print("%10d ",((HistogramElement*)this)->count());
1.64 + st->print_cr("%s",((HistogramElement*)this)->name());
1.65 +}
1.66 +
1.67 +////////////////// Histogram ////////////////////////
1.68 +
1.69 +int Histogram::sort_helper(HistogramElement** e1, HistogramElement** e2) {
1.70 + return (*e1)->compare(*e1,*e2);
1.71 +}
1.72 +
1.73 +Histogram::Histogram(const char* title,int estimatedCount) {
1.74 + _title = title;
1.75 + _elements = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<HistogramElement*>(estimatedCount,true);
1.76 +}
1.77 +
1.78 +void Histogram::add_element(HistogramElement* element) {
1.79 + // Note, we need to add locking !
1.80 + elements()->append(element);
1.81 +}
1.82 +
1.83 +void Histogram::print_header(outputStream* st) {
1.84 + st->print_cr("%s",title());
1.85 + st->print_cr("--------------------------------------------------");
1.86 +}
1.87 +
1.88 +void Histogram::print_elements(outputStream* st) {
1.89 + elements()->sort(Histogram::sort_helper);
1.90 + jint total = 0;
1.91 + for(int i=0; i < elements()->length(); i++) {
1.92 + elements()->at(i)->print();
1.93 + total += elements()->at(i)->count();
1.94 + }
1.95 + st->print("%10d ", total);
1.96 + st->print_cr("Total");
1.97 +}
1.98 +
1.99 +void Histogram::print_on(outputStream* st) const {
1.100 + ((Histogram*)this)->print_header(st);
1.101 + ((Histogram*)this)->print_elements(st);
1.102 +}
1.103 +
1.104 +#endif
