qt5base-lts/tests
Alex Trotsenko 378e26dd14 QUdpSocket: avoid infinite read notifier blocking
There was a small amount of time between the last readDatagram() call
and disabling a read notifier in case the socket had a pending
datagram. If a new datagram arrived in this period, this qualified as
absence of a datagram reader. Do not change the read notifier state
because it is disabled on canReadNotification() entry and always enabled
by the datagram reader.

Thanks to Peter Seiderer, who investigated the same: "Querying
hasPendingDatagrams() for enabling/disabling setReadNotificationEnabled()
is racy (a new datagram could arrive after readDatagam() is called and
before hasPendingDatagrams() is checked). But for unbuffered sockets the
ReadNotification is already disabled before the readReady signal is
emitted and should be re-enabled when calling read() or readDatagram()
from the user."

However, this patch does not completely solve the problem under Windows,
as the socket notifier may emit spurious notifications.

Task-number: QTBUG-46552
Change-Id: If7295d53ae2c788c39e86303502f38135c4d6180
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2015-09-10 12:50:58 +00:00
..
auto QUdpSocket: avoid infinite read notifier blocking 2015-09-10 12:50:58 +00:00
baselineserver Update copyright headers 2015-02-11 06:49:51 +00:00
benchmarks fix usage of wince scope 2015-06-05 10:29:10 +00:00
global tst_bic: Add linux-gcc-ia32 bic data for QtXml 2013-01-16 08:25:28 +01:00
manual QHeaderView - fix a logical / visual index mismatch 2015-06-27 07:08:46 +00:00
shared Update copyright headers 2015-02-11 06:49:51 +00:00
README Doc: Fix references to Qt Test 2013-01-30 01:35:06 +01:00
tests.pro iOS: Enable building of basic tests 2014-01-22 12:35:17 +01:00

This directory contains autotests and benchmarks based on Qt Test. In order
to run the autotests reliably, you need to configure a desktop to match the
test environment that these tests are written for.

Linux X11:

   * The user must be logged in to an active desktop; you can't run the
     autotests without a valid DISPLAY that allows X11 connections.

   * The tests are run against a KDE3 or KDE4 desktop.

   * Window manager uses "click to focus", and not "focus follows mouse". Many
     tests move the mouse cursor around and expect this to not affect focus
     and activation.

   * Disable "click to activate", i.e., when a window is opened, the window
     manager should automatically activate it (give it input focus) and not
     wait for the user to click the window.