mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-14 10:43:24 +00:00
103 lines
2.9 KiB
C++
103 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/*
|
|
* The contents of this file are subject to the Mozilla Public License
|
|
* Version 1.1 (the "MPL"); you may not use this file except in
|
|
* compliance with the MPL. You may obtain a copy of the MPL at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the MPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the MPL
|
|
* for the specific language governing rights and limitations under the
|
|
* MPL.
|
|
*
|
|
* The Initial Developer of this code under the MPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1999 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*
|
|
* Original Author:
|
|
* Chris Waterson <waterson@netscape.com>
|
|
*/
|
|
|
|
#include "nscore.h"
|
|
#include "nsStatistics.h"
|
|
#include "nsISupportsUtils.h"
|
|
#include "nsTraceRefcnt.h" // for NS_MeanAndStdDev
|
|
#include "plhash.h"
|
|
|
|
inline PLHashNumber
|
|
nsStatistics::HashPRInt32(const void* aKey)
|
|
{
|
|
return PLHashNumber(NS_PTR_TO_INT32(aKey));
|
|
}
|
|
|
|
nsStatistics::nsStatistics(const char* aTopic)
|
|
: mTopic(aTopic),
|
|
mDistribution(nsnull),
|
|
mCount(0),
|
|
mMinimum(0),
|
|
mMaximum(0),
|
|
mSum(0),
|
|
mSumOfSquares(0)
|
|
{
|
|
mDistribution = PL_NewHashTable(24, HashPRInt32, PL_CompareValues, PL_CompareValues, nsnull, nsnull);
|
|
}
|
|
|
|
nsStatistics::~nsStatistics()
|
|
{
|
|
PL_HashTableDestroy(mDistribution);
|
|
}
|
|
|
|
void
|
|
nsStatistics::Clear()
|
|
{
|
|
PL_HashTableDestroy(mDistribution);
|
|
mCount = mMinimum = mMaximum = 0;
|
|
mSum = mSumOfSquares = 0.0;
|
|
mDistribution = PL_NewHashTable(24, HashPRInt32, PL_CompareValues, PL_CompareValues, nsnull, nsnull);
|
|
}
|
|
|
|
|
|
void
|
|
nsStatistics::Record(PRInt32 aValue)
|
|
{
|
|
++mCount;
|
|
if (aValue < mMinimum)
|
|
mMinimum = aValue;
|
|
if (aValue > mMaximum)
|
|
mMaximum = aValue;
|
|
mSum += aValue;
|
|
mSumOfSquares += aValue * aValue;
|
|
|
|
PLHashEntry** hep = PL_HashTableRawLookup(mDistribution, PLHashNumber(aValue),
|
|
NS_REINTERPRET_CAST(const void*, aValue));
|
|
|
|
if (hep && *hep) {
|
|
PRInt32 count = NS_PTR_TO_INT32((*hep)->value);
|
|
(*hep)->value = NS_REINTERPRET_CAST(void*, ++count);
|
|
}
|
|
else {
|
|
PL_HashTableRawAdd(mDistribution, hep, PLHashNumber(aValue),
|
|
NS_REINTERPRET_CAST(const void*, aValue),
|
|
NS_REINTERPRET_CAST(void*, 1));
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
nsStatistics::Print(FILE* aFile)
|
|
{
|
|
double mean, stddev;
|
|
NS_MeanAndStdDev(mCount, mSum, mSumOfSquares, &mean, &stddev);
|
|
fprintf(aFile, "%s count=%d, minimum=%d, maximum=%d, mean=%0.2f+/-%0.2f\n",
|
|
mTopic, mCount, mMinimum, mMaximum, mean, stddev);
|
|
|
|
for (PRInt32 i = mMinimum; i <= mMaximum; ++i) {
|
|
PRUint32 count = NS_PTR_TO_INT32(PL_HashTableLookup(mDistribution, NS_INT32_TO_PTR(i)));
|
|
if (! count)
|
|
continue;
|
|
|
|
fprintf(aFile, " %d: %d\n", i, count);
|
|
}
|
|
}
|