From 01859cc12126b7205f5b54d383a9aa88db756f21 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?S=C3=A9rgio=20Martins?= Date: Sat, 16 Jan 2016 00:24:54 +0000 Subject: Reduce allocations by using reserve() Change-Id: If34fa53402985f6b3c5e7217bce4a1177af835b6 Reviewed-by: Marc Mutz --- src/plugins/platforms/xcb/qxcbintegration.cpp | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'src/plugins/platforms/xcb/qxcbintegration.cpp') diff --git a/src/plugins/platforms/xcb/qxcbintegration.cpp b/src/plugins/platforms/xcb/qxcbintegration.cpp index 19e8b1de7d..94e17a2983 100644 --- a/src/plugins/platforms/xcb/qxcbintegration.cpp +++ b/src/plugins/platforms/xcb/qxcbintegration.cpp @@ -174,9 +174,11 @@ QXcbIntegration::QXcbIntegration(const QStringList ¶meters, int &argc, char if (canNotGrabEnv) m_canGrab = false; + const int numParameters = parameters.size(); + m_connections.reserve(1 + numParameters / 2); m_connections << new QXcbConnection(m_nativeInterface.data(), m_canGrab, m_defaultVisualId, displayName); - for (int i = 0; i < parameters.size() - 1; i += 2) { + for (int i = 0; i < numParameters - 1; i += 2) { qCDebug(lcQpaScreen) << "connecting to additional display: " << parameters.at(i) << parameters.at(i+1); QString display = parameters.at(i) + QLatin1Char(':') + parameters.at(i+1); m_connections << new QXcbConnection(m_nativeInterface.data(), m_canGrab, m_defaultVisualId, display.toLatin1().constData()); -- cgit v1.2.3