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performance improvements and larger default buffer size

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git-svn-id: svn://10.0.0.236/trunk@48092 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
rickg%netscape.com
1999-09-17 23:46:55 +00:00
parent fc4c40a00c
commit 944a022ec9
7 changed files with 121 additions and 75 deletions
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39
mozilla/string/obsolete/nsStr.cpp
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@@ -207,15 +207,42 @@ void nsStr::Insert( nsStr& aDest,PRUint32 aDestOffset,const nsStr& aSource,PRUin
if(aSrcOffset<aSource.mLength) {
//here's the only new case we have to handle.
//chars are really being inserted into our buffer...
GrowCapacity(aDest,aDest.mLength+theLength,anAgent);
//shift the chars right by theDelta...
(*gShiftChars[aDest.mCharSize][KSHIFTRIGHT])(aDest.mStr,aDest.mLength,aDestOffset,theLength);
if(aDest.mLength+theLength > aDest.mCapacity) {
nsStr theTempStr;
nsStr::Initialize(theTempStr,aDest.mCharSize);
nsIMemoryAgent* theAgent=(anAgent) ? anAgent : GetDefaultAgent();
EnsureCapacity(theTempStr,aDest.mLength+theLength,theAgent); //grow the temp buffer to the right size
if(aDestOffset) {
Append(theTempStr,aDest,0,aDestOffset,theAgent); //first copy leftmost data...
}
Append(theTempStr,aSource,0,aSource.mLength,theAgent); //next copy inserted (new) data
PRUint32 theRemains=aDest.mLength-aDestOffset;
if(theRemains) {
Append(theTempStr,aDest,aDestOffset,theRemains,theAgent); //next copy rightmost data
}
theAgent->Free(aDest);
aDest.mStr = theTempStr.mStr;
theTempStr.mStr=0; //make sure to null this out so that you don't lose the buffer you just stole...
aDest.mCapacity=theTempStr.mCapacity;
aDest.mOwnsBuffer=theTempStr.mOwnsBuffer;
}
else {
//shift the chars right by theDelta...
(*gShiftChars[aDest.mCharSize][KSHIFTRIGHT])(aDest.mStr,aDest.mLength,aDestOffset,theLength);
//now insert new chars, starting at offset
(*gCopyChars[aSource.mCharSize][aDest.mCharSize])(aDest.mStr,aDestOffset,aSource.mStr,aSrcOffset,theLength);
//now insert new chars, starting at offset
(*gCopyChars[aSource.mCharSize][aDest.mCharSize])(aDest.mStr,aDestOffset,aSource.mStr,aSrcOffset,theLength);
}
//finally, make sure to update the string length...
//finally, make sure to update the string length...
aDest.mLength+=theLength;
AddNullTerminator(aDest);