QLocalSocket: reimplement readLineData() function

The base implementation reads data using repeated calls to getChar(),
which is quite slow.

Change-Id: Ie46624df63791b2cdd3c8a28fe3327427d942505
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/network/socket/qlocalsocket_unix.cpp b/src/network/socket/qlocalsocket_unix.cpp
index 5e050ad323..4dc542f2e3 100644
--- a/src/network/socket/qlocalsocket_unix.cpp
+++ b/src/network/socket/qlocalsocket_unix.cpp
@@ -483,6 +483,16 @@ qint64 QLocalSocket::readData(char *data, qint64 c)
     return d->unixSocket.read(data, c);
 }
 
+qint64 QLocalSocket::readLineData(char *data, qint64 maxSize)
+{
+    if (!maxSize)
+        return 0;
+
+    // QIODevice::readLine() reserves space for the trailing '\0' byte,
+    // so we must read 'maxSize + 1' bytes.
+    return d_func()->unixSocket.readLine(data, maxSize + 1);
+}
+
 qint64 QLocalSocket::skipData(qint64 maxSize)
 {
     return d_func()->unixSocket.skip(maxSize);