kwin/autotests/integration/xwaylandserver_restart_test.cpp
David Edmundson 466f2fe8ba Launch xwayland on demand
This installs a socket notifier onto our xwayland socket, when a user
connects we launch xwayland. The client then connections once kwin has
established itself as the compositor.

For a full desktop plasma session this patch effectively does nothing
too useful as we still start kcminit and make xrdb calls on startup
which in turn will launch X, but for the same reason this patch should
be harmless now as we're still processing the xrdb calls before any
clients will connect.
2023-02-06 16:24:01 +00:00

114 lines
3.9 KiB
C++

/*
SPDX-FileCopyrightText: 2020 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "kwin_wayland_test.h"
#include "composite.h"
#include "core/outputbackend.h"
#include "main.h"
#include "scene/workspacescene.h"
#include "wayland_server.h"
#include "workspace.h"
#include "x11window.h"
#include "xwayland/xwayland.h"
#include "xwayland/xwaylandlauncher.h"
#include <xcb/xcb_icccm.h>
namespace KWin
{
static const QString s_socketName = QStringLiteral("wayland_test_kwin_xwayland_server_restart-0");
class XwaylandServerRestartTest : public QObject
{
Q_OBJECT
private Q_SLOTS:
void initTestCase();
void testRestart();
};
void XwaylandServerRestartTest::initTestCase()
{
QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
QVERIFY(waylandServer()->init(s_socketName));
QMetaObject::invokeMethod(kwinApp()->outputBackend(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(QVector<QRect>, QVector<QRect>() << QRect(0, 0, 1280, 1024) << QRect(1280, 0, 1280, 1024)));
KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);
KConfigGroup xwaylandGroup = config->group("Xwayland");
xwaylandGroup.writeEntry(QStringLiteral("XwaylandCrashPolicy"), QStringLiteral("Restart"));
xwaylandGroup.sync();
kwinApp()->setConfig(config);
kwinApp()->start();
QVERIFY(applicationStartedSpy.wait());
}
static void kwin_safe_kill(QProcess *process)
{
// The SIGKILL signal must be sent when the event loop is spinning.
QTimer::singleShot(1, process, &QProcess::kill);
}
void XwaylandServerRestartTest::testRestart()
{
// This test verifies that the Xwayland server will be restarted after a crash.
Xwl::Xwayland *xwayland = static_cast<Xwl::Xwayland *>(kwinApp()->xwayland());
QSignalSpy startedSpy(xwayland, &Xwl::Xwayland::started);
QSignalSpy stoppedSpy(xwayland, &Xwl::Xwayland::errorOccurred);
Test::createX11Connection(); // trigger an X11 start
QTRY_COMPARE(startedSpy.count(), 1);
// Pretend that the Xwayland process has crashed by sending a SIGKILL to it.
kwin_safe_kill(xwayland->xwaylandLauncher()->process());
QTRY_COMPARE(stoppedSpy.count(), 1);
// Check that the compositor still accepts new X11 clients.
Test::XcbConnectionPtr c = Test::createX11Connection();
QVERIFY(!xcb_connection_has_error(c.get()));
QTRY_COMPARE(startedSpy.count(), 2);
const QRect rect(0, 0, 100, 200);
xcb_window_t windowId = xcb_generate_id(c.get());
xcb_create_window(c.get(), XCB_COPY_FROM_PARENT, windowId, rootWindow(),
rect.x(), rect.y(), rect.width(), rect.height(), 0,
XCB_WINDOW_CLASS_INPUT_OUTPUT, XCB_COPY_FROM_PARENT, 0, nullptr);
xcb_size_hints_t hints;
memset(&hints, 0, sizeof(hints));
xcb_icccm_size_hints_set_position(&hints, 1, rect.x(), rect.y());
xcb_icccm_size_hints_set_size(&hints, 1, rect.width(), rect.height());
xcb_icccm_size_hints_set_min_size(&hints, rect.width(), rect.height());
xcb_icccm_set_wm_normal_hints(c.get(), windowId, &hints);
xcb_map_window(c.get(), windowId);
xcb_flush(c.get());
QSignalSpy windowCreatedSpy(workspace(), &Workspace::windowAdded);
QVERIFY(windowCreatedSpy.wait());
X11Window *window = windowCreatedSpy.last().first().value<X11Window *>();
QVERIFY(window);
QCOMPARE(window->window(), windowId);
QVERIFY(window->isDecorated());
// Render a frame to ensure that the compositor doesn't crash.
Compositor::self()->scene()->addRepaintFull();
QSignalSpy frameRenderedSpy(Compositor::self()->scene(), &WorkspaceScene::frameRendered);
QVERIFY(frameRenderedSpy.wait());
// Destroy the test window.
xcb_destroy_window(c.get(), windowId);
xcb_flush(c.get());
QVERIFY(Test::waitForWindowDestroyed(window));
}
} // namespace KWin
WAYLANDTEST_MAIN(KWin::XwaylandServerRestartTest)
#include "xwaylandserver_restart_test.moc"