From 43b6101df39c04fc8bac0e335c28e4ebcc779df4 Mon Sep 17 00:00:00 2001
From: Alex Trotsenko <alex1973tr@gmail.com>
Date: Sat, 17 Oct 2015 20:13:40 +0300
Subject: [PATCH] QRingBuffer: improve skip() performance

Use free() instead of read(0, length) call.

Change-Id: I284e2099a3fb639cb40525ae2ca7fea0d09a620f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
---
 src/corelib/tools/qringbuffer_p.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/corelib/tools/qringbuffer_p.h b/src/corelib/tools/qringbuffer_p.h
index 3a5ae1c4cc..96c4f9acb6 100644
--- a/src/corelib/tools/qringbuffer_p.h
+++ b/src/corelib/tools/qringbuffer_p.h
@@ -119,7 +119,10 @@ public:
     Q_CORE_EXPORT void append(const QByteArray &qba);
 
     inline qint64 skip(qint64 length) {
-        return read(0, length);
+        qint64 bytesToSkip = qMin(length, bufferSize);
+
+        free(bytesToSkip);
+        return bytesToSkip;
     }
 
     Q_CORE_EXPORT qint64 readLine(char *data, qint64 maxLength);