qcore_unix.cpp

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qcore_unix.cpp

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/home/qt/qt5_coco/qt5/qtbase/src/corelib/kernel/qcore_unix.cpp

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/****************************************************************************

** Contact: https://www.qt.io/licensing/

** This file is part of the QtCore module of the Qt Toolkit.

** $QT_BEGIN_LICENSE:LGPL$

** Commercial License Usage

** Licensees holding valid commercial Qt licenses may use this file in

** accordance with the commercial license agreement provided with the

** Software or, alternatively, in accordance with the terms contained in

** a written agreement between you and The Qt Company. For licensing terms

** and conditions see https://www.qt.io/terms-conditions. For further

** information use the contact form at https://www.qt.io/contact-us.

** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 3 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL3 included in the

** packaging of this file. Please review the following information to

** ensure the GNU Lesser General Public License version 3 requirements

** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.

** GNU General Public License Usage

** Alternatively, this file may be used under the terms of the GNU

** General Public License version 2.0 or (at your option) the GNU General

** Public license version 3 or any later version approved by the KDE Free

** Qt Foundation. The licenses are as published by the Free Software

** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3

** included in the packaging of this file. Please review the following

** information to ensure the GNU General Public License requirements will

** be met: https://www.gnu.org/licenses/gpl-2.0.html and

** https://www.gnu.org/licenses/gpl-3.0.html.

** $QT_END_LICENSE$

****************************************************************************/

#include "qcore_unix_p.h"

#include "qelapsedtimer.h"

#include <stdlib.h>

#ifdef Q_OS_MAC

#include <mach/mach_time.h>

#endif

QT_BEGIN_NAMESPACE

#if !defined(QT_HAVE_PPOLL) && defined(QT_HAVE_POLLTS)

# define ppoll pollts

# define QT_HAVE_PPOLL

#endif

static inline bool time_update(struct timespec *tv, const struct timespec &start,

const struct timespec &timeout)

{

// clock source is (hopefully) monotonic, so we can recalculate how much timeout is left;

// if it isn't monotonic, we'll simply hope that it hasn't jumped, because we have no alternative

struct timespec now = qt_gettime();

*tv = timeout + start - now;

return tv->tv_sec >= 0;

executed 2108 times by 24 tests: return tv->tv_sec >= 0;

Executed by:

tst_Lancelot
tst_QApplication
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDir
tst_QFont
tst_QIcon
tst_QMimeDatabase
tst_QNetworkSession
tst_QObject
tst_QProcess
tst_QProcess_and_GuiEventLoop
tst_QSharedMemory
tst_QSharedPointer
tst_QSystemSemaphore
tst_QUuid
tst_Selftests
tst_qdbuscpp2xml
tst_qdbusxml2cpp
tst_qmessagehandler
tst_qprocess - unknown status
tst_rcc
tst_uic

2108

}

#if !defined(QT_HAVE_PPOLL) && defined(QT_HAVE_POLL)

static inline int timespecToMillisecs(const struct timespec *ts)

{

return (ts == NULL) ? -1 :

executed 324551 times by 56 tests: return (ts == __null) ? -1 : (ts->tv_sec * 1000) + (ts->tv_nsec / 1000000);

Executed by:

tst_Lancelot
tst_NetworkSelfTest
tst_PlatformSocketEngine
tst_QApplication
tst_QCommandLineParser
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFont
tst_QFtp
tst_QGuiEventLoop
tst_QHttpSocketEngine
tst_QIODevice
tst_QIcon
tst_QLocalSocket
tst_QLockFile
tst_QMimeDatabase
tst_QNetworkInterface
tst_QNetworkReply
...

324551

(ts->tv_sec * 1000) + (ts->tv_nsec / 1000000);

executed 324551 times by 56 tests: return (ts == __null) ? -1 : (ts->tv_sec * 1000) + (ts->tv_nsec / 1000000);

Executed by:

tst_Lancelot
tst_NetworkSelfTest
tst_PlatformSocketEngine
tst_QApplication
tst_QCommandLineParser
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFont
tst_QFtp
tst_QGuiEventLoop
tst_QHttpSocketEngine
tst_QIODevice
tst_QIcon
tst_QLocalSocket
tst_QLockFile
tst_QMimeDatabase
tst_QNetworkInterface
tst_QNetworkReply
...

324551

}

#endif

// defined in qpoll.cpp

int qt_poll(struct pollfd *fds, nfds_t nfds, const struct timespec *timeout_ts);

static inline int qt_ppoll(struct pollfd *fds, nfds_t nfds, const struct timespec *timeout_ts)

{

#if defined(QT_HAVE_PPOLL)

return ::ppoll(fds, nfds, timeout_ts, Q_NULLPTR);

#elif defined(QT_HAVE_POLL)

return ::poll(fds, nfds, timespecToMillisecs(timeout_ts));

executed 324551 times by 56 tests: return ::poll(fds, nfds, timespecToMillisecs(timeout_ts));

Executed by:

tst_Lancelot
tst_NetworkSelfTest
tst_PlatformSocketEngine
tst_QApplication
tst_QCommandLineParser
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFont
tst_QFtp
tst_QGuiEventLoop
tst_QHttpSocketEngine
tst_QIODevice
tst_QIcon
tst_QLocalSocket
tst_QLockFile
tst_QMimeDatabase
tst_QNetworkInterface
tst_QNetworkReply
...

324551

#else

return qt_poll(fds, nfds, timeout_ts);

#endif

}

/*!

\internal

Behaves as close to POSIX poll(2) as practical but may be implemented

using select(2) where necessary. In that case, returns -1 and sets errno

to EINVAL if passed any descriptor greater than or equal to FD_SETSIZE.

int qt_safe_poll(struct pollfd *fds, nfds_t nfds, const struct timespec *timeout_ts)

{

if (!timeout_ts) {

!timeout_ts

Description

TRUE

evaluated 765 times by 13 tests

Evaluated by:

tst_QEventLoop
tst_QGuiEventLoop
tst_QLockFile
tst_QNetworkReply
tst_QNetworkSession
tst_QProcess
tst_QSslSocket
tst_QTcpSocket
tst_QUndoGroup
tst_QUndoStack
tst_QXmlSimpleReader
tst_qmake
tst_qmakelib

FALSE

evaluated 321646 times by 52 tests

Evaluated by:

tst_Lancelot
tst_NetworkSelfTest
tst_PlatformSocketEngine
tst_QApplication
tst_QCommandLineParser
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFont
tst_QFtp
tst_QGuiEventLoop
tst_QHttpSocketEngine
tst_QIODevice
tst_QIcon
tst_QLocalSocket
tst_QLockFile
tst_QMimeDatabase
tst_QNetworkInterface
tst_QNetworkReply
...

765-321646

100

// no timeout -> block forever

101

int ret;

102

EINTR_LOOP(ret, qt_ppoll(fds, nfds, Q_NULLPTR));

executed 797 times by 13 tests: end of block

Executed by:

tst_QEventLoop
tst_QGuiEventLoop
tst_QLockFile
tst_QNetworkReply
tst_QNetworkSession
tst_QProcess
tst_QSslSocket
tst_QTcpSocket
tst_QUndoGroup
tst_QUndoStack
tst_QXmlSimpleReader
tst_qmake
tst_qmakelib

ret == -1	Description
TRUE	evaluated 32 times by 3 tests Evaluated by: tst_QProcess tst_qmake tst_qmakelib
FALSE	evaluated 765 times by 13 tests Evaluated by: tst_QEventLoop tst_QGuiEventLoop tst_QLockFile tst_QNetworkReply tst_QNetworkSession tst_QProcess tst_QSslSocket tst_QTcpSocket tst_QUndoGroup tst_QUndoStack tst_QXmlSimpleReader tst_qmake tst_qmakelib