Use QVector::reserve() all over the place.

Reduces internal memory fragmentation.

The search criteria was:
QVector::append(), QVector::push_back(), QVector::operator<<()
and QVector::operator+=() calls inside for, do and while loops.
Statements inside ifs and out of loops weren't considered.

Change-Id: Ie5aaf3cdfac938994e6e5dfa5f51de501ed79a0c
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/src/platformsupport/fbconvenience/qfbscreen.cpp b/src/platformsupport/fbconvenience/qfbscreen.cpp
index 566f84c9ea..d00954375d 100644
--- a/src/platformsupport/fbconvenience/qfbscreen.cpp
+++ b/src/platformsupport/fbconvenience/qfbscreen.cpp
@@ -206,10 +206,11 @@ void QFbScreen::generateRects()
         }
 #endif
     }
-    foreach (const QRect &rect, remainingScreen.rects())
+    const QVector<QRect> remainingScreenRects = remainingScreen.rects();
+    mCachedRects.reserve(mCachedRects.count() + remainingScreenRects.count());
+    foreach (const QRect &rect, remainingScreenRects)
         mCachedRects += QPair<QRect, int>(rect, -1);
     mIsUpToDate = true;
-    return;
 }
 
 QRegion QFbScreen::doRedraw()