From 01859cc12126b7205f5b54d383a9aa88db756f21 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?S=C3=A9rgio=20Martins?= Date: Sat, 16 Jan 2016 00:24:54 +0000 Subject: Reduce allocations by using reserve() Change-Id: If34fa53402985f6b3c5e7217bce4a1177af835b6 Reviewed-by: Marc Mutz --- src/corelib/codecs/qicucodec.cpp | 1 + src/corelib/itemmodels/qstringlistmodel.cpp | 4 +++- 2 files changed, 4 insertions(+), 1 deletion(-) (limited to 'src/corelib') diff --git a/src/corelib/codecs/qicucodec.cpp b/src/corelib/codecs/qicucodec.cpp index b375999aeb..4a4cfd45aa 100644 --- a/src/corelib/codecs/qicucodec.cpp +++ b/src/corelib/codecs/qicucodec.cpp @@ -417,6 +417,7 @@ QList QIcuCodec::availableCodecs() QList QIcuCodec::availableMibs() { QList mibs; + mibs.reserve(mibToNameSize + 1); for (int i = 0; i < mibToNameSize; ++i) mibs += mibToName[i].mib; diff --git a/src/corelib/itemmodels/qstringlistmodel.cpp b/src/corelib/itemmodels/qstringlistmodel.cpp index dad736b445..b0919c5d78 100644 --- a/src/corelib/itemmodels/qstringlistmodel.cpp +++ b/src/corelib/itemmodels/qstringlistmodel.cpp @@ -276,7 +276,9 @@ void QStringListModel::sort(int, Qt::SortOrder order) QModelIndexList oldList = persistentIndexList(); QModelIndexList newList; - for (int i = 0; i < oldList.count(); ++i) + const int numOldIndexes = oldList.count(); + newList.reserve(numOldIndexes); + for (int i = 0; i < numOldIndexes; ++i) newList.append(index(forwarding.at(oldList.at(i).row()), 0)); changePersistentIndexList(oldList, newList); -- cgit v1.2.3