Mercurial > hg > truffle
annotate src/share/vm/utilities/intHisto.cpp @ 2177:3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank
| author | coleenp |
|---|---|
| date | Thu, 27 Jan 2011 16:11:27 -0800 |
| parents | f95d63e2154a |
| children | d2a62e0f25eb |
| rev | line source |
|---|---|
| 342 | 1 /* |
| 1972 | 2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. |
| 342 | 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 * | |
|
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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. |
| 342 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "utilities/intHisto.hpp" | |
| 342 | 27 |
| 28 IntHistogram::IntHistogram(int est, int max) : _max(max), _tot(0) { | |
| 29 assert(0 <= est && est <= max, "Preconditions"); | |
| 30 _elements = new (ResourceObj::C_HEAP) GrowableArray<int>(est, true); | |
| 31 guarantee(_elements != NULL, "alloc failure"); | |
| 32 } | |
| 33 | |
| 34 void IntHistogram::add_entry(int outcome) { | |
| 35 if (outcome > _max) outcome = _max; | |
| 36 int new_count = _elements->at_grow(outcome) + 1; | |
| 37 _elements->at_put(outcome, new_count); | |
| 38 _tot++; | |
| 39 } | |
| 40 | |
| 41 int IntHistogram::entries_for_outcome(int outcome) { | |
| 42 return _elements->at_grow(outcome); | |
| 43 } | |
| 44 | |
| 45 void IntHistogram::print_on(outputStream* st) const { | |
| 46 double tot_d = (double)_tot; | |
| 47 st->print_cr("Outcome # of occurrences %% of occurrences"); | |
| 48 st->print_cr("-----------------------------------------------"); | |
| 49 for (int i=0; i < _elements->length()-2; i++) { | |
| 50 int cnt = _elements->at(i); | |
| 51 if (cnt != 0) { | |
| 52 st->print_cr("%7d %10d %8.4f", | |
| 53 i, cnt, (double)cnt/tot_d); | |
| 54 } | |
| 55 } | |
| 56 // Does it have any max entries? | |
| 57 if (_elements->length()-1 == _max) { | |
| 58 int cnt = _elements->at(_max); | |
| 59 st->print_cr(">= %4d %10d %8.4f", | |
| 60 _max, cnt, (double)cnt/tot_d); | |
| 61 } | |
| 62 st->print_cr("-----------------------------------------------"); | |
| 63 st->print_cr(" All %10d %8.4f", _tot, 1.0); | |
| 64 } |