1 /* |
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2 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #include "precompiled.hpp" |
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26 #include "utilities/intHisto.hpp" |
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27 |
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28 IntHistogram::IntHistogram(int est, int max) : _max(max), _tot(0) { |
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29 assert(0 <= est && est <= max, "Preconditions"); |
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30 _elements = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<int>(est, true); |
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31 guarantee(_elements != NULL, "alloc failure"); |
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32 } |
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33 |
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34 void IntHistogram::add_entry(int outcome) { |
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35 if (outcome > _max) outcome = _max; |
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36 int new_count = _elements->at_grow(outcome) + 1; |
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37 _elements->at_put(outcome, new_count); |
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38 _tot++; |
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39 } |
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40 |
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41 int IntHistogram::entries_for_outcome(int outcome) { |
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42 return _elements->at_grow(outcome); |
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43 } |
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44 |
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45 void IntHistogram::print_on(outputStream* st) const { |
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46 double tot_d = (double)_tot; |
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47 st->print_cr("Outcome # of occurrences %% of occurrences"); |
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48 st->print_cr("-----------------------------------------------"); |
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49 for (int i=0; i < _elements->length()-2; i++) { |
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50 int cnt = _elements->at(i); |
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51 if (cnt != 0) { |
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52 st->print_cr("%7d %10d %8.4f", |
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53 i, cnt, (double)cnt/tot_d); |
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54 } |
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55 } |
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56 // Does it have any max entries? |
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57 if (_elements->length()-1 == _max) { |
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58 int cnt = _elements->at(_max); |
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59 st->print_cr(">= %4d %10d %8.4f", |
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60 _max, cnt, (double)cnt/tot_d); |
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61 } |
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62 st->print_cr("-----------------------------------------------"); |
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63 st->print_cr(" All %10d %8.4f", _tot, 1.0); |
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64 } |
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