qt 6.5.1 original

tests/auto/corelib/io/qlockfile/qlockfiletesthelper/CMakeLists.txt

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+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+#####################################################################
+## qlockfile_test_helper Binary:
+#####################################################################
+
+qt_internal_add_test_helper(qlockfile_test_helper
+    OVERRIDE_OUTPUT_DIRECTORY
+    OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/"
+    SOURCES
+        qlockfile_test_helper.cpp
+)

tests/auto/corelib/io/qlockfile/qlockfiletesthelper/qlockfile_test_helper.cpp

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+// Copyright (C) 2013 David Faure <faure+bluesystems@kde.org>
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include <QDebug>
+#include <QCoreApplication>
+#include <QLockFile>
+#include <QThread>
+
+#ifdef Q_OS_UNIX
+#  include <unistd.h>
+#else
+#  include <stdlib.h>
+#endif
+
+int main(int argc, char *argv[])
+{
+    QCoreApplication app(argc, argv);
+
+    if (argc <= 1)
+        return -1;
+
+    const QString lockName = QString::fromLocal8Bit(argv[1]);
+
+    QString option;
+    if (argc > 2)
+        option = QString::fromLocal8Bit(argv[2]);
+
+    if (option == "-uncleanexit") {
+        QLockFile lockFile(lockName);
+        lockFile.lock();
+        // exit on purpose, so that the lock remains!
+        _exit(0);
+    } else if (option == "-busy") {
+        QLockFile lockFile(lockName);
+        lockFile.lock();
+        QThread::msleep(500);
+        return 0;
+    } else {
+        QLockFile lockFile(lockName);
+        if (lockFile.isLocked()) // cannot happen, before calling lock or tryLock
+            return QLockFile::UnknownError;
+
+        lockFile.tryLock();
+        return lockFile.error();
+    }
+}