diff options
Diffstat (limited to 'tests/auto/corelib/io/qlockfile/tst_qlockfile.cpp')
-rw-r--r-- | tests/auto/corelib/io/qlockfile/tst_qlockfile.cpp | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/tests/auto/corelib/io/qlockfile/tst_qlockfile.cpp b/tests/auto/corelib/io/qlockfile/tst_qlockfile.cpp index 8d890e81fa..27614e0eb8 100644 --- a/tests/auto/corelib/io/qlockfile/tst_qlockfile.cpp +++ b/tests/auto/corelib/io/qlockfile/tst_qlockfile.cpp @@ -57,6 +57,7 @@ private slots: void waitForLock(); void staleLockFromCrashedProcess_data(); void staleLockFromCrashedProcess(); + void staleLockFromCrashedProcessReusedPid(); void staleShortLockFromBusyProcess(); void staleLongLockFromBusyProcess(); void staleLockRace(); @@ -64,6 +65,9 @@ private slots: void noPermissionsWindows(); void corruptedLockFile(); +private: + static bool overwritePidInLockFile(const QString &filePath, qint64 pid); + public: QString m_helperApp; QTemporaryDir dir; @@ -277,6 +281,30 @@ void tst_QLockFile::staleLockFromCrashedProcess() #endif // !QT_NO_PROCESS } +void tst_QLockFile::staleLockFromCrashedProcessReusedPid() +{ +#if defined(QT_NO_PROCESS) + QSKIP("This test requires QProcess support"); +#elif defined(Q_OS_WINRT) || defined(Q_OS_WINCE) || defined(Q_OS_IOS) + QSKIP("We cannot retrieve information about other processes on this platform."); +#else + const QString fileName = dir.path() + "/staleLockFromCrashedProcessReusedPid"; + + int ret = QProcess::execute(m_helperApp, QStringList() << fileName << "-crash"); + QCOMPARE(ret, int(QLockFile::NoError)); + QVERIFY(QFile::exists(fileName)); + QVERIFY(overwritePidInLockFile(fileName, QCoreApplication::applicationPid())); + + QLockFile secondLock(fileName); + qint64 pid = 0; + secondLock.getLockInfo(&pid, 0, 0); + QCOMPARE(pid, QCoreApplication::applicationPid()); + secondLock.setStaleLockTime(0); + QVERIFY(secondLock.tryLock()); + QCOMPARE(int(secondLock.error()), int(QLockFile::NoError)); +#endif // !QT_NO_PROCESS +} + void tst_QLockFile::staleShortLockFromBusyProcess() { #ifdef QT_NO_PROCESS @@ -497,5 +525,25 @@ void tst_QLockFile::corruptedLockFile() QCOMPARE(int(secondLock.error()), int(QLockFile::NoError)); } +bool tst_QLockFile::overwritePidInLockFile(const QString &filePath, qint64 pid) +{ + QFile f(filePath); + if (!f.open(QFile::ReadWrite)) { + qWarning("Cannot open %s.", qPrintable(filePath)); + return false; + } + QByteArray buf = f.readAll(); + int i = buf.indexOf('\n'); + if (i < 0) { + qWarning("Unexpected lockfile content."); + return false; + } + buf.remove(0, i); + buf.prepend(QByteArray::number(pid)); + f.seek(0); + f.resize(buf.size()); + return f.write(buf) == buf.size(); +} + QTEST_MAIN(tst_QLockFile) #include "tst_qlockfile.moc" |