gecko-dev/tools/jprof/intcnt.cpp
2005-12-13 13:25:40 +00:00

92 lines
2.9 KiB
C++

/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
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*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape Communications Corp.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
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* ***** END LICENSE BLOCK ***** */
#include "intcnt.h"
IntCount::IntCount() : numInts(0), iPair(0) { }
IntCount::~IntCount() { delete [] iPair;}
int IntCount::getSize() {return numInts;}
int IntCount::getCount(int pos) {return iPair[pos].cnt;}
int IntCount::getIndex(int pos) {return iPair[pos].idx;}
int IntCount::countAdd(int index, int increment)
{
if(numInts) {
// Do a binary search to find the element
int divPoint = 0;
if(index>iPair[numInts-1].idx) {
divPoint = numInts;
} else if(index<iPair[0].idx) {
divPoint = 0;
} else {
int low=0, high=numInts-1;
int mid = (low+high)/2;
while(1) {
mid = (low+high)/2;
if(index<iPair[mid].idx) {
high = mid;
} else if(index>iPair[mid].idx) {
if(mid<numInts-1 && index<iPair[mid+1].idx) {
divPoint = mid+1;
break;
} else {
low = mid+1;
}
} else if(index==iPair[mid].idx) {
return iPair[mid].cnt += increment;
}
}
}
int i;
IntPair *tpair = new IntPair[numInts+1];
for(i=0; i<divPoint; i++) tpair[i] = iPair[i];
for(i=divPoint; i<numInts; i++) tpair[i+1] = iPair[i];
++numInts;
delete [] iPair;
iPair = tpair;
iPair[divPoint].idx = index;
iPair[divPoint].cnt = increment;
return increment;
} else {
iPair = new IntPair[1];
numInts = 1;
iPair[0].idx = index;
return iPair[0].cnt = increment;
}
}