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8219565: [deadcode] remove share/utilities/intHisto.*

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Reviewed-by: dholmes
This commit is contained in:
Igor Ignatyev 2019-02-28 09:10:46 -08:00
parent dbd7ee1eb4
commit 7cf85f15b6
3 changed files with 0 additions and 143 deletions
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1
src/hotspot/share/gc/g1/g1RemSet.cpp
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@ -48,7 +48,6 @@
#include "runtime/os.hpp"
#include "utilities/align.hpp"
#include "utilities/globalDefinitions.hpp"
#include "utilities/intHisto.hpp"
#include "utilities/stack.inline.hpp"
#include "utilities/ticks.hpp"

64
src/hotspot/share/utilities/intHisto.cpp
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@ -1,64 +0,0 @@
/*
* Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "utilities/intHisto.hpp"
IntHistogram::IntHistogram(int est, int max) : _max(max), _tot(0) {
assert(0 <= est && est <= max, "Preconditions");
_elements = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<int>(est, true);
guarantee(_elements != NULL, "alloc failure");
}
void IntHistogram::add_entry(int outcome) {
if (outcome > _max) outcome = _max;
int new_count = _elements->at_grow(outcome) + 1;
_elements->at_put(outcome, new_count);
_tot++;
}
int IntHistogram::entries_for_outcome(int outcome) {
return _elements->at_grow(outcome);
}
void IntHistogram::print_on(outputStream* st) const {
double tot_d = (double)_tot;
st->print_cr("Outcome # of occurrences %% of occurrences");
st->print_cr("-----------------------------------------------");
for (int i=0; i < _elements->length()-2; i++) {
int cnt = _elements->at(i);
if (cnt != 0) {
st->print_cr("%7d %10d %8.4f",
i, cnt, (double)cnt/tot_d);
}
}
// Does it have any max entries?
if (_elements->length()-1 == _max) {
int cnt = _elements->at(_max);
st->print_cr(">= %4d %10d %8.4f",
_max, cnt, (double)cnt/tot_d);
}
st->print_cr("-----------------------------------------------");
st->print_cr(" All %10d %8.4f", _tot, 1.0);
}

78
src/hotspot/share/utilities/intHisto.hpp
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@ -1,78 +0,0 @@
/*
* Copyright (c) 2001, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#ifndef SHARE_UTILITIES_INTHISTO_HPP
#define SHARE_UTILITIES_INTHISTO_HPP
#include "memory/allocation.hpp"
#include "utilities/growableArray.hpp"
// This class implements a simple histogram.
// A histogram summarizes a series of "measurements", each of which is
// assumed (required in this implementation) to have an outcome that is a
// non-negative integer. The histogram efficiently maps measurement outcomes
// to the number of measurements had that outcome.
// To print the results, invoke print() on your Histogram*.
// Note: there is already an existing "Histogram" class, in file
// histogram.{hpp,cpp}, but to my mind that's not a histogram, it's a table
// mapping strings to counts. To be a histogram (IMHO) it needs to map
// numbers (in fact, integers) to number of occurrences of that number.
// ysr: (i am not sure i agree with the above note.) i suspect we want to have a
// histogram template that will map an arbitrary type (with a defined order
// relation) to a count.
class IntHistogram : public CHeapObj<mtInternal> {
protected:
int _max;
int _tot;
GrowableArray<int>* _elements;
public:
// Create a new, empty table. "est" is an estimate of the maximum outcome
// that will be added, and "max" is an outcome such that all outcomes at
// least that large will be bundled with it.
IntHistogram(int est, int max);
// Add a measurement with the given outcome to the sequence.
void add_entry(int outcome);
// Return the number of entries recorded so far with the given outcome.
int entries_for_outcome(int outcome);
// Return the total number of entries recorded so far.
int total_entries() { return _tot; }
// Return the number of entries recorded so far with the given outcome as
// a fraction of the total number recorded so far.
double fraction_for_outcome(int outcome) {
return
(double)entries_for_outcome(outcome)/
(double)total_entries();
}
// Print the histogram on the given output stream.
void print_on(outputStream* st) const;
};
#endif // SHARE_UTILITIES_INTHISTO_HPP