Merge remote-tracking branch 'origin/5.6' into dev

Conflicts:
	src/corelib/io/qiodevice_p.h
	src/corelib/kernel/qvariant_p.h
	src/corelib/tools/qsimd.cpp
	src/gui/kernel/qguiapplication.cpp
	tests/auto/network/socket/qtcpsocket/tst_qtcpsocket.cpp

Change-Id: I742a093cbb231b282b43e463ec67173e0d29f57a

1 files changed, 11 insertions, 1 deletions

diff --git a/src/gui/text/qfont.cpp b/src/gui/text/qfont.cpp
index 7681cc5e51..16e88dad5f 100644
--- a/src/gui/text/qfont.cpp
+++ b/src/gui/text/qfont.cpp
@@ -2802,6 +2802,10 @@ void QFontCache::insertEngineData(const QFontDef &def, QFontEngineData *engineDa
     Q_ASSERT(!engineDataCache.contains(def));
 
     engineData->ref.ref();
+    // Decrease now rather than waiting
+    if (total_cost > min_cost * 2)
+        decreaseCache();
+
     engineDataCache.insert(def, engineData);
     increaseCost(sizeof(QFontEngineData));
 }
@@ -2839,8 +2843,10 @@ void QFontCache::insertEngine(const Key &key, QFontEngine *engine, bool insertMu
                  key.def.pixelSize, key.def.weight, key.def.style, key.def.fixedPitch);
     }
 #endif
-
     engine->ref.ref();
+    // Decrease now rather than waiting
+    if (total_cost > min_cost * 2)
+        decreaseCache();
 
     Engine data(engine);
     data.timestamp = ++current_timestamp;
@@ -2901,7 +2907,11 @@ void QFontCache::timerEvent(QTimerEvent *)
 
         return;
     }
+    decreaseCache();
+}
 
+void QFontCache::decreaseCache()
+{
     // go through the cache and count up everything in use
     uint in_use_cost = 0;