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https://bitbucket.org/smil3y/kdelibs.git
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95a8be4470
the PID check was racy, bonus points for not writing data at all to the lock and not reading it meaning less disk I/O oh, yes - by using O_CLOEXEC the lock is stale-safe Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
/* This file is part of the KDE libraries
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Copyright (c) 2011 David Faure <faure@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <kcomponentdata.h>
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#include <kcmdlineargs.h>
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#include <kaboutdata.h>
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#include <klockfile.h>
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#include <kdebug.h>
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int main(int argc, char *argv[])
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{
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KAboutData about("klockfile_testlock", 0, ki18n("klockfile_testlock"), "version");
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KComponentData cData(&about);
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if (argc <= 1) {
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return false;
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}
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const QString lockName = QString::fromLocal8Bit(argv[1]);
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KLockFile lockFile(lockName);
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if (lockFile.isLocked()) {
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return false;
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}
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return lockFile.tryLock();
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}
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