File 0001-Do-not-use-functor-if-Qt-lt-5.10.patch of Package kcoreaddons

Overview Repositories Revisions Requests Users Attributes Meta

File 0001-Do-not-use-functor-if-Qt-lt-5.10.patch of Package kcoreaddons

From 16e8cf1e6607ae496515edce00a771ad0153b348 Mon Sep 17 00:00:00 2001
From: Milian Wolff <mail@milianw.de>
Date: Thu, 11 Jan 2018 15:39:35 +0100
Subject: Optimize: use QMetaObject::invokeMethod with functor

Summary:
When using this method with a string argument, the method would need
to be queried every time via QMetaObject::indexOfMethod. Using a
functor one can get rid of this, saving a few cycles which can
add up when handling many inotify events.

Note that the benchmark timing does not really improve significantly.
Using a profiler like perf, we do see that less cycles are consumed
though. In my measurement, this reduces the cpu cyles by about 2%.

Reviewers: dfaure

Subscribers: #frameworks

Tags: #frameworks

Differential Revision: https://phabricator.kde.org/D9823
---
 src/lib/io/kdirwatch.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/lib/io/kdirwatch.cpp')

Rebased by Antonio Larrosa <alarrosa@suse.com> to recover this patch
which was later removed by
https://cgit.kde.org/kcoreaddons.git/commit/src/lib/io/kdirwatch.cpp?id=026bbfe17707b0f3999b8b461e24480a8a539226

diff --git a/src/lib/io/kdirwatch.cpp b/src/lib/io/kdirwatch.cpp
index eb8aeeb..7213ee6 100644
--- a/src/lib/io/kdirwatch.cpp
+++ b/src/lib/io/kdirwatch.cpp
@@ -1405,16 +1405,28 @@ void KDirWatchPrivate::emitEvent(Entry *e, int event, const QString &fileName)
         // Emit the signals delayed, to avoid unexpected re-entrance from the slots (#220153)
 
         if (event & Deleted) {
+#if QT_VERSION < QT_VERSION_CHECK(5, 10, 0)
+            QMetaObject::invokeMethod(c.instance, "setDeleted", Qt::QueuedConnection, Q_ARG(QString, path));
+#else
             QMetaObject::invokeMethod(c.instance, [c, path]() { c.instance->setDeleted(path); }, Qt::QueuedConnection);
+#endif
         }
 
         if (event & Created) {
+#if QT_VERSION < QT_VERSION_CHECK(5, 10, 0)
+            QMetaObject::invokeMethod(c.instance, "setCreated", Qt::QueuedConnection, Q_ARG(QString, path));
+#else
             QMetaObject::invokeMethod(c.instance, [c, path]() { c.instance->setCreated(path); }, Qt::QueuedConnection);
+#endif
             // possible emit Change event after creation
         }
 
         if (event & Changed) {
+#if QT_VERSION < QT_VERSION_CHECK(5, 10, 0)
+            QMetaObject::invokeMethod(c.instance, "setDirty", Qt::QueuedConnection, Q_ARG(QString, path));
+#else
             QMetaObject::invokeMethod(c.instance, [c, path]() { c.instance->setDirty(path); }, Qt::QueuedConnection);
+#endif
         }
     }
 }
-- 
cgit v1.1

Places

File 0001-Do-not-use-functor-if-Qt-lt-5.10.patch of Package kcoreaddons

Places