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// Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
// SPDX-License-Identifier: BSD-3-Clause
#include <stdio.h>
#include <QTextStream>
#include <qtlockedfile.h>
int main()
{
QTextStream qout(stdout);
QTextStream qin(stdin);
qout << "---===>>>> File locking example <<<<===---\n";
QtLockedFile lf("foo");
lf.open(QFile::ReadWrite);
QString line;
bool blocking = true;
while (line != "q") {
int m = lf.lockMode();
if (m == 0)
qout << "\n[*] You have no locks.";
else if (m == QFile::ReadOnly)
qout << "\n[*] You have a read lock.";
else
qout << "\n[*] You have a read/write lock.";
qout << " Blocking wait is ";
if (blocking)
qout << "ON.\n";
else
qout << "OFF.\n";
qout << "Acquire [r]ead lock, read/[w]rite lock, re[l]ease lock, [t]oggle or [q]uit? ";
qout.flush();
line = qin.readLine();
if (line.isNull())
break;
if (line == "r") {
qout << "Acquiring a read lock... ";
qout.flush();
if (lf.lock(QtLockedFile::ReadLock, blocking))
qout << "done!\n";
else
qout << "not currently possible!\n";
} else if (line == "w") {
qout << "Acquiring a read/write lock... ";
qout.flush();
if (lf.lock(QtLockedFile::WriteLock, blocking))
qout << "done!\n";
else
qout << "not currently possible!\n";
} else if (line == "l") {
qout << "Releasing lock... ";
qout.flush();
lf.unlock();
qout << "done!\n";
} else if (line == "t") {
blocking = !blocking;
}
qout.flush();
}
}
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