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Long live QDeadlineTimer

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It's like QElapsedTimer, but marks a time in the future instead.

[ChangeLog][QtCore] Added QDeadlineTimer, a counterpart to
QElapsedTimer, used to mark a time point in the future (a deadline) and
determine whether such a deadline has passed.

Change-Id: Ifea6e497f11a461db432ffff144921f7fbc1d1d3
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
This commit is contained in:
Thiago Macieira 2016-04-26 23:01:43 -07:00
parent 906fc0f5e3
commit 12eacc3bab
12 changed files with 1783 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/corelib/kernel/kernel.pri
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@ -4,6 +4,8 @@ HEADERS += \
kernel/qabstracteventdispatcher.h \ kernel/qabstracteventdispatcher.h \
kernel/qabstractnativeeventfilter.h \ kernel/qabstractnativeeventfilter.h \
kernel/qbasictimer.h \ kernel/qbasictimer.h \
kernel/qdeadlinetimer.h \
kernel/qdeadlinetimer_p.h \
kernel/qelapsedtimer.h \ kernel/qelapsedtimer.h \
kernel/qeventloop.h\ kernel/qeventloop.h\
kernel/qpointer.h \ kernel/qpointer.h \
@ -46,6 +48,7 @@ SOURCES += \
kernel/qabstracteventdispatcher.cpp \ kernel/qabstracteventdispatcher.cpp \
kernel/qabstractnativeeventfilter.cpp \ kernel/qabstractnativeeventfilter.cpp \
kernel/qbasictimer.cpp \ kernel/qbasictimer.cpp \
kernel/qdeadlinetimer.cpp \
kernel/qelapsedtimer.cpp \ kernel/qelapsedtimer.cpp \
kernel/qeventloop.cpp \ kernel/qeventloop.cpp \
kernel/qcoreapplication.cpp \ kernel/qcoreapplication.cpp \

827
src/corelib/kernel/qdeadlinetimer.cpp Normal file
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@ -0,0 +1,827 @@
/****************************************************************************
**
** Copyright (C) 2016 Intel Corporation.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qdeadlinetimer.h"
#include "qdeadlinetimer_p.h"
#include <qpair.h>
QT_BEGIN_NAMESPACE
Q_DECL_CONST_FUNCTION static inline QPair<qint64, qint64> toSecsAndNSecs(qint64 nsecs)
{
qint64 secs = nsecs / (1000*1000*1000);
if (nsecs < 0)
--secs;
nsecs -= secs * 1000*1000*1000;
return qMakePair(secs, nsecs);
}
/*!
\class QDeadlineTimer
\inmodule QtCore
\brief The QDeadlineTimer class marks a deadline in the future.
\since 5.8
\reentrant
\ingroup tools
The QDeadlineTimer class is usually used to calculate future deadlines and
verify whether the deadline has expired. QDeadlineTimer can also be used
for deadlines without expiration ("forever"). It forms a counterpart to
QElapsedTimer, which calculates how much time has elapsed since
QElapsedTimer::start() was called.
QDeadlineTimer provides a more convenient API compared to
QElapsedTimer::hasExpired().
The typical use-case for the class is to create a QDeadlineTimer before the
operation in question is started, and then use remainingTime() or
hasExpired() to determine whether to continue trying the operation.
QDeadlineTimer objects can be passed to functions being called to execute
this operation so they know how long to still operate.
\code
void executeOperation(int msecs)
{
QDeadlineTimer deadline(msecs);
do {
if (readFromDevice(deadline.remainingTime())
break;
waitForReadyRead(deadline);
} while (!deadline.hasExpired());
}
\endcode
Many QDeadlineTimer functions deal with time out values, which all are
measured in milliseconds. There are two special values, the same as many
other Qt functions named \c{waitFor} or similar:
\list
\o 0: no time left, expired
\o -1: infinite time left, timer never expires
\endlist
\section1 Reference Clocks
QDeadlineTimer will use the same clock as QElapsedTimer (see
QElapsedTimer::clockType() and QElapsedTimer::isMonotonic()).
\section1 Timer types
Like QTimer, QDeadlineTimer can select among different levels of coarseness
on the timers. You can select precise timing by passing Qt::PreciseTimer to
the functions that set of change the timer, or you can select coarse timing
by passing Qt::CoarseTimer. Qt::VeryCoarseTimer is currently interpreted
the same way as Qt::CoarseTimer.
This feature is dependent on support from the operating system: if the OS
does not support a coarse timer functionality, then QDeadlineTimer will
behave like Qt::PreciseTimer was passed.
QDeadlineTimer defaults to Qt::CoarseTimer because on operating systems
that do support coarse timing, making timing calls to that clock source is
often much more efficient. The level of coarseness depends on the
operating system, but should be in the order of a couple of milliseconds.
\section1 \c{std::chrono} Compatibility
QDeadlineTimer is compatible with the \c{std::chrono} API from C++11 and
can be constructed from or compared to both \c{std::chrono::duration} and
\c{std::chrono::time_point} objects. In addition, it is fully compatible
with the time literals from C++14, which allow one to write code as:
\code
using namespace std::chrono;
QDeadlineTimer deadline(30s);
device->waitForReadyRead(deadline);
if (deadline.remainingTime<nanoseconds>() > 300ms)
cleanup();
\endcode
As can be seen in the example above, QDeadlineTimer offers a templated
version of remainingTime() and deadline() that can be used to return
\c{std::chrono} objects.
Note that comparing to \c{time_point} is not as efficient as comparing to
\c{duration}, since QDeadlineTimer may need to convert from its own
internal clock source to the clock source used by the \c{time_point} object.
Also note that, due to this conversion, the deadlines will not be precise,
so the following code is not expected to compare equally:
\code
using namespace std::chrono;
auto now = steady_clock::now();
QDeadlineTimer deadline(now + 1s);
Q_ASSERT(deadline == now + 1s);
\endcode
\sa QTime, QTimer, QDeadlineTimer, Qt::TimerType
*/
/*!
\enum QDeadlineTimer::ForeverConstant
\value Forever Used when creating a QDeadlineTimer to indicate the
deadline should not expire
*/
/*!
\fn QDeadlineTimer::QDeadlineTimer(Qt::TimerType timerType)
Constructs an expired QDeadlineTimer object. For this object,
remainingTime() will return 0.
The timer type \a timerType may be ignored, since the timer is already
expired. Similarly, for optimization purposes, this function will not
attempt to obtain the current time and will use a value known to be in the
past. Therefore, deadline() may return an unexpected value and this object
cannot be used in calculation of how long it is overdue. If that
functionality is required, use QDeadlineTimer::current().
\sa hasExpired(), remainingTime(), timerType(), current()
*/
/*!
\fn QDeadlineTimer::QDeadlineTimer(ForeverConstant, Qt::TimerType timerType)
Constructs a QDeadlineTimer object that never expires. For this object,
remainingTime() will return -1, deadline() will return the maximum value,
and isForever() will return true.
The timer type \a timerType may be ignored, since the timer is already
expired.
\sa hasExpired(), isForever(), remainingTime(), timerType()
*/
/*!
Constructs a QDeadlineTimer object with an expiry time of \a msecs msecs
from the moment of the creation of this object, if msecs is positive. If \a
msecs is zero, this QDeadlineTimer will be marked as expired, causing
remainingTime() to return zero and deadline() to return an indeterminate
time point in the past. If \a msecs is -1, the timer will be set it to
never expire, causing remainingTime() to return -1 and deadline() to return
the maximum value.
The QDeadlineTimer object will be constructed with a timer type of \a
timerType.
For optimization purposes, if \a msecs is zero, this function may skip
obtaining the current time and may instead use a value known to be in the
past. If that happens, deadline() may return an unexpected value and this
object cannot be used in calculation of how long it is overdue. If that
functionality is required, use QDeadlineTimer::current() and add time to
it.
\sa hasExpired(), isForever(), remainingTime(), setRemainingTime()
*/
QDeadlineTimer::QDeadlineTimer(qint64 msecs, Qt::TimerType type) Q_DECL_NOTHROW
: t2(0)
{
setRemainingTime(msecs, type);
}
/*!
\fn QDeadlineTimer::QDeadlineTimer(std::chrono::time_point<Clock, Duration> deadline, Qt::TimerType type)
Constructs a QDeadlineTimer object with a deadline at \a deadline time
point, converting from the clock source \c{Clock} to Qt's internal clock
source (see QElapsedTimer::clcokType()).
If \a deadline is in the past, this QDeadlineTimer object is set to
expired, whereas if \a deadline is equal to \c{Duration::max()}, then this
object is set to never expire.
The QDeadlineTimer object will be constructed with a timer type of \a
timerType.
\sa hasExpired(), isForever(), remainingTime<Duration>(), setDeadline()
*/
/*!
\fn QDeadlineTimer::QDeadlineTimer(std::chrono::duration<Rep, Period> remaining, Qt::TimerType type)
Constructs a QDeadlineTimer object with a remaining time of \a remaining.
If \a remaining is zero or negative, this QDeadlineTimer object will be
mark as expired, whereas if \a remaining is equal to \c{duration::max()},
the object will be set to never expire.
The QDeadlineTimer object will be constructed with a timer type of \a
timerType.
This constructor can be used with C++14's user-defined literals for time, such as in:
\code
using namespace std::chrono;
QDeadlineTimer deadline(250ms);
\endcode
For optimization purposes, if \a remaining is zero or negative, this
function may skip obtaining the current time and may instead use a value
known to be in the past. If that happens, deadline() may return an
unexpected value and this object cannot be used in calculation of how long
it is overdue. If that functionality is required, use
QDeadlineTimer::current() and add time to it.
\sa hasExpired(), isForever(), remainingTime<Duration>(), setRemainingTime()
*/
/*!
\fn void QDeadlineTimer::setDeadline(std::chrono::time_point<Clock, Duration> deadline, Qt::TimerType type)
Sets this QDeadlineTimer to the deadline marked by \a deadline time
point, converting from the clock source \c{Clock} to Qt's internal clock
source (see QElapsedTimer::clcokType()).
If \a deadline is in the past, this QDeadlineTimer object is set to
expired, whereas if \a deadline is equal to \c{Duration::max()}, then this
object is set to never expire.
The timer type for this QDeadlineTimer object will be set to \a timerType type.
\sa hasExpired(), isForever(), remainingTime<Duration>(),
*/
/*!
Sets the remaining time for this QDeadlineTimer object to \a msecs
milliseconds from now, if \a msecs has a positive value. If \a msecs is
zero, this QDeadlineTimer object will be marked as expired, whereas a value
of -1 will set it to never expire.
The timer type for this QDeadlineTimer object will be set to \a timerType type.
\sa setPreciseRemainingTime(), hasExpired(), isForever(), remainingTime()
*/
void QDeadlineTimer::setRemainingTime(qint64 msecs, Qt::TimerType timerType) Q_DECL_NOTHROW
{
if (msecs == -1)
*this = QDeadlineTimer(Forever, timerType);
else
setPreciseRemainingTime(0, msecs * 1000 * 1000, timerType);
}
/*!
Sets the remaining time for this QDeadlineTimer object to \a secs seconds
plus \a nsecs nanoseconds from now, if \a secs has a positive value. If \a
secs is -1, this QDeadlineTimer will be set it to never expire. If both
parameters are zero, this QDeadlineTimer will be marked as expired.
The timer type for this QDeadlineTimer object will be set to \a timerType type.
\sa setRemainingTime(), hasExpired(), isForever(), remainingTime()
*/
void QDeadlineTimer::setPreciseRemainingTime(qint64 secs, qint64 nsecs, Qt::TimerType timerType) Q_DECL_NOTHROW
{
if (secs == -1) {
*this = QDeadlineTimer(Forever, timerType);
return;
}
*this = current(timerType);
if (QDeadlineTimerNanosecondsInT2) {
t1 += secs + toSecsAndNSecs(nsecs).first;
t2 += toSecsAndNSecs(nsecs).second;
if (t2 > 1000*1000*1000) {
t2 -= 1000*1000*1000;
++t1;
}
} else {
t1 += secs * 1000 * 1000 * 1000 + nsecs;
}
}
/*!
\overload
\fn void QDeadlineTimer::setRemainingTime(std::chrono::duration<Rep, Period> remaining, Qt::TimerType type)
Sets the remaining time for this QDeadlineTimer object to \a remaining. If
\a remaining is zero or negative, this QDeadlineTimer object will be mark
as expired, whereas if \a remaining is equal to \c{duration::max()}, the
object will be set to never expire.
The timer type for this QDeadlineTimer object will be set to \a timerType type.
This function can be used with C++14's user-defined literals for time, such as in:
\code
using namespace std::chrono;
deadline.setRemainingTime(250ms);
\endcode
\sa setDeadline(), remainingTime<Duration>(), hasExpired(), isForever()
*/
/*!
\fn void QDeadlineTimer::setPreciseRemainingTime(qint64 secs, unsigned nsecs, Qt::TimerType type)
Sets the remaining time for this QDeadlineTimer object to \a secs seconds
and \a nsecs nanoseconds from now, if \a secs is a positive value. If both
values are zero, this QDeadlineTimer object will be marked as expired,
whereas if \a secs is -1, it will set it to never expire.
If value of \a nsecs is more than 1 billion nanoseconds (1 second), this
function will adjust \a secs accordingly.
The timer type for this QDeadlineTimer object will be set to \a timerType type.
\sa setRemainingTime(), hasExpired(), isForever(), remainingTime()
*/
/*!
\overload
\fn Duration QDeadlineTimer::remainingTime() const
Returns a \c{std::chrono::duration} object of type \c{Duration} containing
the remaining time in this QDeadlineTimer, if it still has time left. If
the deadline has passed, this returns \c{Duration::zero()}, whereas if the
object is set to never expire, it returns \c{Duration::max()} (instead of
-1).
It is not possible to obtain the overdue time for expired timers with this
function. To do that, see deadline().
\note The overload of this function without template parameter always
returns milliseconds.
\sa setRemainingTime(), deadline<Clock, Duration>()
*/
/*!
\overload
\fn std::chrono::time_point<Clock, Duration> QDeadlineTimer::deadline() const
Returns the absolute time point for the deadline stored in QDeadlineTimer
object as a \c{std::chrono::time_point} object. The template parameter
\c{Clock} is mandatory and indicates which of the C++ timekeeping clocks to
use as a reference. The value will be in the past if this QDeadlineTimer
has expired.
If this QDeadlineTimer never expires, this function returns
\c{std::chrono::time_point<Clock, Duration>::max()}.
This function can be used to calculate the amount of time a timer is
overdue, by subtracting the current time point of the reference clock, as
in the following example:
\code
auto realTimeLeft = std::chrono::nanoseconds::max();
auto tp = deadline.deadline<std::chrono::steady_clock>();
if (tp != std::chrono::steady_clock::max())
realTimeLeft = tp - std::chrono::steady_clock::now();
\endcode
\note Timers that were created as expired have an indetermine time point in
the past as their deadline, so the above calculation may not work.
\sa remainingTime(), deadlineNSecs(), setDeadline()
*/
/*!
Returns true if this QDeadlineTimer object never expires, false otherwise.
For timers that never expire, remainingTime() always returns -1 and
deadline() returns the maximum value.
\sa ForeverConstant, hasExpired(), remainingTime()
*/
bool QDeadlineTimer::isForever() const Q_DECL_NOTHROW
{
return t1 == (std::numeric_limits<qint64>::max)();
}
/*!
Returns true if this QDeadlineTimer object has expired, false if there
remains time left. For objects that have expired, remainingTime() will
return zero and deadline() will return a time point in the past.
QDeadlineTimer objects created with the \ref{ForeverConstant} never expire
and this function always returns false for them.
\sa isForever(), remainingTime()
*/
bool QDeadlineTimer::hasExpired() const Q_DECL_NOTHROW
{
if (isForever())
return false;
return *this <= current(timerType());
}
/*!
\fn Qt::TimerType QDeadlineTimer::timerType() const Q_DECL_NOTHROW
Returns the timer type is active for this object.
\sa setTimerType()
*/
/*!
Changes the timer type for this object to \a timerType.
The behavior for each possible value of \a timerType is operating-system
dependent. Qt::PreciseTimer will use the most precise timer that Qt can
find, with resolution of 1 millisecond or better, whereas QDeadlineTimer
will try to use a more coarse timer for Qt::CoarseTimer and
Qt::VeryCoarseTimer.
\sa timerType()
*/
void QDeadlineTimer::setTimerType(Qt::TimerType timerType)
{
type = timerType;
}
/*!
Returns the remaining time in this QDeadlineTimer object in milliseconds.
If the timer has already expired, this function will return zero and it is
not possible to obtain the amount of time overdue with this function (to do
that, see deadline()). If the timer was set to never expire, this function
returns -1.
This function is suitable for use in Qt APIs that take a millisecond
timeout, such as the many \ref QIODevice \c waitFor functions or the timed
lock functions in \ref QMutex, \ref QWaitCondition, \ref QSemaphore, or
\ref QReadWriteLock. For example:
\code
mutex.tryLock(deadline.remainingTime());
\code
\sa remainingTimeNSecs(), isForever(), hasExpired()
*/
qint64 QDeadlineTimer::remainingTime() const Q_DECL_NOTHROW
{
qint64 ns = remainingTimeNSecs();
return ns <= 0 ? ns : ns / (1000 * 1000);
}
/*!
Returns the remaining time in this QDeadlineTimer object in nanoseconds. If
the timer has already expired, this function will return zero and it is not
possible to obtain the amount of time overdue with this function. If the
timer was set to never expire, this function returns -1.
\sa remainingTime(), isForever(), hasExpired()
*/
qint64 QDeadlineTimer::remainingTimeNSecs() const Q_DECL_NOTHROW
{
if (isForever())
return -1;
qint64 raw = rawRemainingTimeNSecs();
return raw < 0 ? 0 : raw;
}
/*!
\internal
Same as remainingTimeNSecs, but may return negative remaining times. Does
not deal with Forever.
*/
qint64 QDeadlineTimer::rawRemainingTimeNSecs() const Q_DECL_NOTHROW
{
QDeadlineTimer now = current(timerType());
if (QDeadlineTimerNanosecondsInT2)
return (t1 - now.t1) * (1000*1000*1000) + t2 - now.t2;
return t1 - now.t1;
}
/*!
Returns the absolute time point for the deadline stored in QDeadlineTimer
object, calculated in milliseconds relative to the reference clock, the
same as QElapsedTimer::msecsSinceReference(). The value will be in the past
if this QDeadlineTimer has expired.
If this QDeadlineTimer never expires, this function returns
\c{std::numeric_limits<qint64>::max()}.
This function can be used to calculate the amount of time a timer is
overdue, by subtracting QDeadlineTimer::current() or
QElapsedTimer::msecsSinceReference(), as in the following example:
\code
qint64 realTimeLeft = deadline.deadline();
if (realTimeLeft != (std::numeric_limits<qint64>::max)()) {
realTimeLeft -= QDeadlineTimer::current().deadline();
// or:
//QElapsedTimer timer;
//timer.start();
//realTimeLeft -= timer.msecsSinceReference();
}
\endcode
\note Timers that were created as expired have an indetermine time point in
the past as their deadline, so the above calculation may not work.
\sa remainingTime(), deadlineNSecs(), setDeadline()
*/
qint64 QDeadlineTimer::deadline() const Q_DECL_NOTHROW
{
if (isForever())
return t1;
return deadlineNSecs() / (1000 * 1000);
}
/*!
Returns the absolute time point for the deadline stored in QDeadlineTimer
object, calculated in nanoseconds relative to the reference clock, the
same as QElapsedTimer::msecsSinceReference(). The value will be in the past
if this QDeadlineTimer has expired.
If this QDeadlineTimer never expires, this function returns
\c{std::numeric_limits<qint64>::max()}.
This function can be used to calculate the amount of time a timer is
overdue, by subtracting QDeadlineTimer::current(), as in the following
example:
\code
qint64 realTimeLeft = deadline.deadlineNSecs();
if (realTimeLeft != std::numeric_limits<qint64>::max())
realTimeLeft -= QDeadlineTimer::current().deadlineNSecs();
\endcode
\note Timers that were created as expired have an indetermine time point in
the past as their deadline, so the above calculation may not work.
\sa remainingTime(), deadlineNSecs()
*/
qint64 QDeadlineTimer::deadlineNSecs() const Q_DECL_NOTHROW
{
if (isForever())
return t1;
if (QDeadlineTimerNanosecondsInT2)
return t1 * 1000 * 1000 * 1000 + t2;
return t1;
}
/*!
Sets the deadline for this QDeadlineTimer object to be the \a msecs
absolute time point, counted in milliseconds since the reference clock (the
same as QElapsedTimer::msecsSinceReference()), and the timer type to \a
timerType. If the value is in the past, this QDeadlineTimer will be marked
as expired.
If \a msecs is \c{std::numeric_limits<qint64>::max()}, this QDeadlineTimer
will be set to never expire.
\sa setPreciseDeadline(), deadline(), deadlineNSecs(), setRemainingTime()
*/
void QDeadlineTimer::setDeadline(qint64 msecs, Qt::TimerType timerType) Q_DECL_NOTHROW
{
if (msecs == (std::numeric_limits<qint64>::max)()) {
setPreciseDeadline(msecs, 0, timerType); // msecs == MAX implies Forever
} else {
setPreciseDeadline(msecs / 1000, msecs % 1000 * 1000 * 1000, timerType);
}
}
/*!
Sets the deadline for this QDeadlineTimer object to be \a secs seconds and
\a nsecs nanoseconds since the reference clock epoch (the same as
QElapsedTimer::msecsSinceReference()), and the timer type to \a timerType.
If the value is in the past, this QDeadlineTimer will be marked as expired.
If \a secs or \a nsecs is \c{std::numeric_limits<qint64>::max()}, this
QDeadlineTimer will be set to never expire. If \a nsecs is more than 1
billion nanoseconds (1 second), then \a secs will be adjusted accordingly.
\sa setDeadline(), deadline(), deadlineNSecs(), setRemainingTime()
*/
void QDeadlineTimer::setPreciseDeadline(qint64 secs, qint64 nsecs, Qt::TimerType timerType) Q_DECL_NOTHROW
{
type = timerType;
if (secs == (std::numeric_limits<qint64>::max)() || nsecs == (std::numeric_limits<qint64>::max)()) {
*this = QDeadlineTimer(Forever, timerType);
} else if (QDeadlineTimerNanosecondsInT2) {
t1 = secs + toSecsAndNSecs(nsecs).first;
t2 = toSecsAndNSecs(nsecs).second;
} else {
t1 = secs * (1000*1000*1000) + nsecs;
}
}
/*!
Returns a QDeadlineTimer object whose deadline is extended from \a dt's
deadline by \a nsecs nanoseconds. If \a dt was set to never expire, this
function returns a QDeadlineTimer that will not expire either.
\note if \a dt was created as expired, its deadline is indeterminate and
adding an amount of time may or may not cause it to become unexpired.
*/
QDeadlineTimer QDeadlineTimer::addNSecs(QDeadlineTimer dt, qint64 nsecs) Q_DECL_NOTHROW
{
if (dt.isForever() || nsecs == (std::numeric_limits<qint64>::max)()) {
dt = QDeadlineTimer(Forever, dt.timerType());
} else if (QDeadlineTimerNanosecondsInT2) {
dt.t1 += toSecsAndNSecs(nsecs).first;
dt.t2 += toSecsAndNSecs(nsecs).second;
if (dt.t2 > 1000*1000*1000) {
dt.t2 -= 1000*1000*1000;
++dt.t1;
}
} else {
dt.t1 += nsecs;
}
return dt;
}
/*!
\fn QDeadlineTimer QDeadlineTimer::current(Qt::TimerType timerType)
Returns a QDeadlineTimer that is expired but is guaranteed to contain the
current time. Objects created by this function can participate in the
calculation of how long a timer is overdue, using the deadline() function.
The QDeadlineTimer object will be constructed with a timer type of \a
timerType.
*/
/*!
\fn qint64 QDeadlineTimer::resolution(Qt::TimerType timerType)
Returns the resolution in nanoseconds of the system clock that backs timers
of type \a timerType, or 0 if the resolution could not be determined.
The resolution is not a guarantee that applications will get time values
with an accuracy down to that level. It is only the minimum change value
that can be expected.
*/
/*!
\fn bool operator==(QDeadlineTimer d1, QDeadlineTimer d2)
\related QDeadlineTimer
Returns true if the deadline on \a d1 and the deadline in \a d2 are the
same, false otherwise. The timer type used to create the two deadlines is
ignored. This function is equivalent to:
\code
return d1.deadlineNSecs() == d2.deadlineNSecs();
\endcode
\note comparing QDeadlineTimer objects with different timer types is
not supported and may result in unpredictable behavior.
*/
/*!
\fn bool operator!=(QDeadlineTimer d1, QDeadlineTimer d2)
\related QDeadlineTimer
Returns true if the deadline on \a d1 and the deadline in \a d2 are
diferent, false otherwise. The timer type used to create the two deadlines
is ignored. This function is equivalent to:
\code
return d1.deadlineNSecs() != d2.deadlineNSecs();
\endcode
\note comparing QDeadlineTimer objects with different timer types is
not supported and may result in unpredictable behavior.
*/
/*!
\fn bool operator<(QDeadlineTimer d1, QDeadlineTimer d2)
\related QDeadlineTimer
Returns true if the deadline on \a d1 is earlier than the deadline in \a
d2, false otherwise. The timer type used to create the two deadlines is
ignored. This function is equivalent to:
\code
return d1.deadlineNSecs() < d2.deadlineNSecs();
\endcode
\note comparing QDeadlineTimer objects with different timer types is
not supported and may result in unpredictable behavior.
*/
/*!
\fn bool operator<=(QDeadlineTimer d1, QDeadlineTimer d2)
\related QDeadlineTimer
Returns true if the deadline on \a d1 is earlier than or the same as the
deadline in \a d2, false otherwise. The timer type used to create the two
deadlines is ignored. This function is equivalent to:
\code
return d1.deadlineNSecs() <= d2.deadlineNSecs();
\endcode
\note comparing QDeadlineTimer objects with different timer types is
not supported and may result in unpredictable behavior.
*/
/*!
\fn bool operator>(QDeadlineTimer d1, QDeadlineTimer d2)
\related QDeadlineTimer
Returns true if the deadline on \a d1 is later than the deadline in \a
d2, false otherwise. The timer type used to create the two deadlines is
ignored. This function is equivalent to:
\code
return d1.deadlineNSecs() > d2.deadlineNSecs();
\endcode
\note comparing QDeadlineTimer objects with different timer types is
not supported and may result in unpredictable behavior.
*/
/*!
\fn bool operator>=(QDeadlineTimer d1, QDeadlineTimer d2)
\related QDeadlineTimer
Returns true if the deadline on \a d1 is later than or the same as the
deadline in \a d2, false otherwise. The timer type used to create the two
deadlines is ignored. This function is equivalent to:
\code
return d1.deadlineNSecs() >= d2.deadlineNSecs();
\endcode
\note comparing QDeadlineTimer objects with different timer types is
not supported and may result in unpredictable behavior.
*/
/*!
\fn QDeadlineTimer operator+(QDeadlineTimer dt, qint64 msecs)
\related QDeadlineTimer
Returns a QDeadlineTimer object whose deadline is \a msecs later than the
deadline stored in \a dt. If \a dt is set to never expire, this function
returns a QDeadlineTimer that does not expire either.
To add times of precision greater than 1 millisecond, use addNSecs().
*/
/*!
\fn QDeadlineTimer operator+(qint64 msecs, QDeadlineTimer dt)
\related QDeadlineTimer
Returns a QDeadlineTimer object whose deadline is \a msecs later than the
deadline stored in \a dt. If \a dt is set to never expire, this function
returns a QDeadlineTimer that does not expire either.
To add times of precision greater than 1 millisecond, use addNSecs().
*/
/*!
\fn QDeadlineTimer operator-(QDeadlineTimer dt, qint64 msecs)
\related QDeadlineTimer
Returns a QDeadlineTimer object whose deadline is \a msecs before the
deadline stored in \a dt. If \a dt is set to never expire, this function
returns a QDeadlineTimer that does not expire either.
To subtract times of precision greater than 1 millisecond, use addNSecs().
*/
/*!
\fn QDeadlineTimer &QDeadlineTimer::operator+=(qint64 msecs)
Extends this QDeadlineTimer object by \a msecs milliseconds and returns
itself. If this object is set to never expire, this function does nothing.
To add times of precision greater than 1 millisecond, use addNSecs().
*/
/*!
\fn QDeadlineTimer &QDeadlineTimer::operator-=(qint64 msecs)
Shortens this QDeadlineTimer object by \a msecs milliseconds and returns
itself. If this object is set to never expire, this function does nothing.
To subtract times of precision greater than 1 millisecond, use addNSecs().
*/
// the rest of the functions are in qelapsedtimer_xxx.cpp
QT_END_NAMESPACE

190
src/corelib/kernel/qdeadlinetimer.h Normal file
View File

@ -0,0 +1,190 @@
/****************************************************************************
**
** Copyright (C) 2016 Intel Corporation.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QDEADLINETIMER_H
#define QDEADLINETIMER_H
#include <QtCore/qelapsedtimer.h>
#include <QtCore/qmetatype.h>
#include <QtCore/qnamespace.h>
#ifdef max
// un-pollute the namespace. We need std::numeric_limits::max() and std::chrono::duration::max()
# undef max
#endif
#include <limits>
#if QT_HAS_INCLUDE(<chrono>)
# include <chrono>
#endif
QT_BEGIN_NAMESPACE
class Q_CORE_EXPORT QDeadlineTimer
{
public:
enum ForeverConstant { Forever };
Q_DECL_CONSTEXPR QDeadlineTimer(Qt::TimerType type_ = Qt::CoarseTimer) Q_DECL_NOTHROW
: t1(0), t2(0), type(type_) {}
Q_DECL_CONSTEXPR QDeadlineTimer(ForeverConstant, Qt::TimerType type_ = Qt::CoarseTimer) Q_DECL_NOTHROW
: t1(std::numeric_limits<qint64>::max()), t2(0), type(type_) {}
explicit QDeadlineTimer(qint64 msecs, Qt::TimerType type = Qt::CoarseTimer) Q_DECL_NOTHROW;
void swap(QDeadlineTimer &other)
{ qSwap(t1, other.t1); qSwap(t2, other.t2); qSwap(type, other.type); }
bool isForever() const Q_DECL_NOTHROW;
bool hasExpired() const Q_DECL_NOTHROW;
Qt::TimerType timerType() const Q_DECL_NOTHROW
{ return Qt::TimerType(type & 0xff); }
void setTimerType(Qt::TimerType type);
qint64 remainingTime() const Q_DECL_NOTHROW;
qint64 remainingTimeNSecs() const Q_DECL_NOTHROW;
void setRemainingTime(qint64 msecs, Qt::TimerType type = Qt::CoarseTimer) Q_DECL_NOTHROW;
void setPreciseRemainingTime(qint64 secs, qint64 nsecs = 0,
Qt::TimerType type = Qt::CoarseTimer) Q_DECL_NOTHROW;
qint64 deadline() const Q_DECL_NOTHROW Q_DECL_PURE_FUNCTION;
qint64 deadlineNSecs() const Q_DECL_NOTHROW Q_DECL_PURE_FUNCTION;
void setDeadline(qint64 msecs, Qt::TimerType timerType = Qt::CoarseTimer) Q_DECL_NOTHROW;
void setPreciseDeadline(qint64 secs, qint64 nsecs = 0,
Qt::TimerType type = Qt::CoarseTimer) Q_DECL_NOTHROW;
static QDeadlineTimer addNSecs(QDeadlineTimer dt, qint64 nsecs) Q_DECL_NOTHROW Q_DECL_PURE_FUNCTION;
static QDeadlineTimer current(Qt::TimerType timerType = Qt::CoarseTimer) Q_DECL_NOTHROW;
friend bool operator==(QDeadlineTimer d1, QDeadlineTimer d2)
{ return d1.t1 == d2.t1 && d1.t2 == d2.t2; }
friend bool operator!=(QDeadlineTimer d1, QDeadlineTimer d2)
{ return !(d1 == d2); }
friend bool operator<(QDeadlineTimer d1, QDeadlineTimer d2)
{ return d1.t1 < d2.t1 || (d1.t1 == d2.t1 && d1.t2 < d2.t2); }
friend bool operator<=(QDeadlineTimer d1, QDeadlineTimer d2)
{ return d1 == d2 || d1 < d2; }
friend bool operator>(QDeadlineTimer d1, QDeadlineTimer d2)
{ return d2 < d1; }
friend bool operator>=(QDeadlineTimer d1, QDeadlineTimer d2)
{ return !(d1 < d2); }
friend QDeadlineTimer operator+(QDeadlineTimer dt, qint64 msecs)
{ return QDeadlineTimer::addNSecs(dt, msecs * 1000 * 1000); }
friend QDeadlineTimer operator+(qint64 msecs, QDeadlineTimer dt)
{ return dt + msecs; }
friend QDeadlineTimer operator-(QDeadlineTimer dt, qint64 msecs)
{ return dt + (-msecs); }
friend qint64 operator-(QDeadlineTimer dt1, QDeadlineTimer dt2)
{ return (dt1.deadlineNSecs() - dt2.deadlineNSecs()) / (1000 * 1000); }
QDeadlineTimer &operator+=(qint64 msecs)
{ *this = *this + msecs; return *this; }
QDeadlineTimer &operator-=(qint64 msecs)
{ *this = *this + (-msecs); return *this; }
#if QT_HAS_INCLUDE(<chrono>) || defined(Q_QDOC)
template <class Clock, class Duration>
QDeadlineTimer(std::chrono::time_point<Clock, Duration> deadline_,
Qt::TimerType type_ = Qt::CoarseTimer) : t2(0)
{ setDeadline(deadline_, type_); }
template <class Clock, class Duration>
QDeadlineTimer &operator=(std::chrono::time_point<Clock, Duration> deadline_)
{ setDeadline(deadline_); return *this; }
template <class Clock, class Duration>
void setDeadline(std::chrono::time_point<Clock, Duration> deadline_,
Qt::TimerType type_ = Qt::CoarseTimer)
{ setRemainingTime(deadline_ == deadline_.max() ? Duration::max() : deadline_ - Clock::now(), type_); }
template <class Clock, class Duration = typename Clock::duration>
std::chrono::time_point<Clock, Duration> deadline() const
{
auto val = std::chrono::nanoseconds(rawRemainingTimeNSecs()) + Clock::now();
return std::chrono::time_point_cast<Duration>(val);
}
template <class Rep, class Period>
QDeadlineTimer(std::chrono::duration<Rep, Period> remaining, Qt::TimerType type_ = Qt::CoarseTimer)
: t2(0)
{ setRemainingTime(remaining, type_); }
template <class Rep, class Period>
QDeadlineTimer &operator=(std::chrono::duration<Rep, Period> remaining)
{ setRemainingTime(remaining); return *this; }
template <class Rep, class Period>
void setRemainingTime(std::chrono::duration<Rep, Period> remaining, Qt::TimerType type_ = Qt::CoarseTimer)
{
if (remaining == remaining.max())
*this = QDeadlineTimer(Forever, type_);
else
setPreciseRemainingTime(0, std::chrono::nanoseconds(remaining).count(), type_);
}
std::chrono::nanoseconds remainingTimeAsDuration() const Q_DECL_NOTHROW
{
if (isForever())
return std::chrono::nanoseconds::max();
qint64 nsecs = rawRemainingTimeNSecs();
if (nsecs <= 0)
return std::chrono::nanoseconds::zero();
return std::chrono::nanoseconds(nsecs);
}
template <class Rep, class Period>
friend QDeadlineTimer operator+(QDeadlineTimer dt, std::chrono::duration<Rep, Period> value)
{ return QDeadlineTimer::addNSecs(dt, std::chrono::duration_cast<std::chrono::nanoseconds>(value).count()); }
template <class Rep, class Period>
friend QDeadlineTimer operator+(std::chrono::duration<Rep, Period> value, QDeadlineTimer dt)
{ return dt + value; }
template <class Rep, class Period>
friend QDeadlineTimer operator+=(QDeadlineTimer &dt, std::chrono::duration<Rep, Period> value)
{ return dt = dt + value; }
#endif
private:
qint64 t1;
unsigned t2;
unsigned type;
qint64 rawRemainingTimeNSecs() const Q_DECL_NOTHROW;
};
Q_DECLARE_SHARED(QDeadlineTimer)
QT_END_NAMESPACE
Q_DECLARE_METATYPE(QDeadlineTimer)
#endif // QDEADLINETIMER_H

59
src/corelib/kernel/qdeadlinetimer_p.h Normal file
View File

@ -0,0 +1,59 @@
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QDEADLINETIMER_P_H
#define QDEADLINETIMER_P_H
#include <QtCore/qglobal.h>
QT_BEGIN_NAMESPACE
enum {
#if defined(Q_OS_UNIX) && !defined(Q_OS_DARWIN)
// t1 contains seconds and t2 contains nanoseconds
QDeadlineTimerNanosecondsInT2 = 1
#else
// t1 contains nanoseconds, t2 is always zero
QDeadlineTimerNanosecondsInT2 = 0
#endif
};
QT_END_NAMESPACE
#endif

7
src/corelib/kernel/qelapsedtimer.cpp
View File

@ -83,6 +83,9 @@ QT_BEGIN_NAMESPACE
\snippet qelapsedtimer/main.cpp 2 \snippet qelapsedtimer/main.cpp 2
It is often more convenient to use \ref{QDeadlineTimer} in this case, which
counts towards a timeout in the future instead of tracking elapsed time.
\section1 Reference Clocks \section1 Reference Clocks
QElapsedTimer will use the platform's monotonic reference clock in all QElapsedTimer will use the platform's monotonic reference clock in all
@ -120,7 +123,7 @@ QT_BEGIN_NAMESPACE
The information on which clocks types may overflow and how to remedy that The information on which clocks types may overflow and how to remedy that
issue is documented along with the clock types. issue is documented along with the clock types.
\sa QTime, QTimer \sa QTime, QTimer, QDeadlineTimer
*/ */
/*! /*!
@ -255,7 +258,7 @@ bool QElapsedTimer::isValid() const Q_DECL_NOTHROW
The value of \a timeout can be -1 to indicate that this timer does not The value of \a timeout can be -1 to indicate that this timer does not
expire, in which case this function will always return false. expire, in which case this function will always return false.
\sa elapsed() \sa elapsed(), QDeadlineTimer
*/ */
bool QElapsedTimer::hasExpired(qint64 timeout) const Q_DECL_NOTHROW bool QElapsedTimer::hasExpired(qint64 timeout) const Q_DECL_NOTHROW
{ {

9
src/corelib/kernel/qelapsedtimer_generic.cpp
View File

@ -38,6 +38,7 @@
****************************************************************************/ ****************************************************************************/
#include "qelapsedtimer.h" #include "qelapsedtimer.h"
#include "qdeadlinetimer.h"
#include "qdatetime.h" #include "qdatetime.h"
QT_BEGIN_NAMESPACE QT_BEGIN_NAMESPACE
@ -201,4 +202,12 @@ bool operator<(const QElapsedTimer &v1, const QElapsedTimer &v2) Q_DECL_NOTHROW
return v1.t1 < v2.t1; return v1.t1 < v2.t1;
} }
QDeadlineTimer QDeadlineTimer::current(Qt::TimerType timerType) Q_DECL_NOTHROW
{
QDeadlineTimer result;
result.t1 = QDateTime::currentMSecsSinceEpoch() * 1000 * 1000;
result.type = timerType;
return result;
}
QT_END_NAMESPACE QT_END_NAMESPACE

29
src/corelib/kernel/qelapsedtimer_mac.cpp
View File

@ -41,6 +41,8 @@
#define _POSIX_C_SOURCE 200809L #define _POSIX_C_SOURCE 200809L
#include "qelapsedtimer.h" #include "qelapsedtimer.h"
#include "qdeadlinetimer.h"
#include "qdeadlinetimer_p.h"
#include <sys/time.h> #include <sys/time.h>
#include <time.h> #include <time.h>
#include <unistd.h> #include <unistd.h>
@ -50,6 +52,12 @@
QT_BEGIN_NAMESPACE QT_BEGIN_NAMESPACE
#ifdef __LP64__
typedef __int128_t LargeInt;
#else
typedef qint64 LargeInt;
#endif
QElapsedTimer::ClockType QElapsedTimer::clockType() Q_DECL_NOTHROW QElapsedTimer::ClockType QElapsedTimer::clockType() Q_DECL_NOTHROW
{ {
return MachAbsoluteTime; return MachAbsoluteTime;
@ -65,13 +73,13 @@ static qint64 absoluteToNSecs(qint64 cpuTime)
{ {
if (info.denom == 0) if (info.denom == 0)
mach_timebase_info(&info); mach_timebase_info(&info);
#ifdef __LP64__
__uint128_t nsecs = static_cast<__uint128_t>(cpuTime) * info.numer / info.denom; // don't do multiplication & division if those are equal
return static_cast<qint64>(nsecs); // (mathematically it would be the same, but it's computationally expensive)
#else if (info.numer == info.denom)
qint64 nsecs = cpuTime * info.numer / info.denom; return cpuTime;
qint64 nsecs = LargeInt(cpuTime) * info.numer / info.denom;
return nsecs; return nsecs;
#endif
} }
static qint64 absoluteToMSecs(qint64 cpuTime) static qint64 absoluteToMSecs(qint64 cpuTime)
@ -146,4 +154,13 @@ bool operator<(const QElapsedTimer &v1, const QElapsedTimer &v2) Q_DECL_NOTHROW
return v1.t1 < v2.t1; return v1.t1 < v2.t1;
} }
QDeadlineTimer QDeadlineTimer::current(Qt::TimerType timerType) Q_DECL_NOTHROW
{
Q_STATIC_ASSERT(!QDeadlineTimerNanosecondsInT2);
QDeadlineTimer result;
result.type = timerType;
result.t1 = absoluteToNSecs(mach_absolute_time());
return result;
}
QT_END_NAMESPACE QT_END_NAMESPACE

14
src/corelib/kernel/qelapsedtimer_unix.cpp
View File

@ -39,6 +39,8 @@
****************************************************************************/ ****************************************************************************/
#include "qelapsedtimer.h" #include "qelapsedtimer.h"
#include "qdeadlinetimer.h"
#include "qdeadlinetimer_p.h"
#if defined(Q_OS_VXWORKS) #if defined(Q_OS_VXWORKS)
#include "qfunctions_vxworks.h" #include "qfunctions_vxworks.h"
#else #else
@ -248,4 +250,16 @@ bool operator<(const QElapsedTimer &v1, const QElapsedTimer &v2) Q_DECL_NOTHROW
return v1.t1 < v2.t1 || (v1.t1 == v2.t1 && v1.t2 < v2.t2); return v1.t1 < v2.t1 || (v1.t1 == v2.t1 && v1.t2 < v2.t2);
} }
QDeadlineTimer QDeadlineTimer::current(Qt::TimerType timerType) Q_DECL_NOTHROW
{
Q_STATIC_ASSERT(QDeadlineTimerNanosecondsInT2);
QDeadlineTimer result;
qint64 cursec, curnsec;
do_gettime(&cursec, &curnsec);
result.t1 = cursec;
result.t2 = curnsec;
result.type = timerType;
return result;
}
QT_END_NAMESPACE QT_END_NAMESPACE

22
src/corelib/kernel/qelapsedtimer_win.cpp
View File

@ -38,6 +38,8 @@
****************************************************************************/ ****************************************************************************/
#include "qelapsedtimer.h" #include "qelapsedtimer.h"
#include "qdeadlinetimer.h"
#include "qdeadlinetimer_p.h"
#include <qt_windows.h> #include <qt_windows.h>
QT_BEGIN_NAMESPACE QT_BEGIN_NAMESPACE
@ -76,6 +78,17 @@ static inline qint64 ticksToNanoseconds(qint64 ticks)
} }
} }
static inline qint64 nanosecondsToTicks(qint64 nsec)
{
if (counterFrequency > 0) {
// QueryPerformanceCounter uses an arbitrary frequency
return double(nsec) * counterFrequency / 1000000000.;
} else {
// GetTickCount(64) uses milliseconds
return nsec / 1000000;
}
}
static quint64 getTickCount() static quint64 getTickCount()
{ {
resolveCounterFrequency(); resolveCounterFrequency();
@ -161,4 +174,13 @@ bool operator<(const QElapsedTimer &v1, const QElapsedTimer &v2) Q_DECL_NOTHROW
return (v1.t1 - v2.t1) < 0; return (v1.t1 - v2.t1) < 0;
} }
QDeadlineTimer QDeadlineTimer::current(Qt::TimerType timerType) Q_DECL_NOTHROW
{
Q_STATIC_ASSERT(!QDeadlineTimerNanosecondsInT2);
QDeadlineTimer result;
result.t1 = ticksToNanoseconds(getTickCount());
result.type = timerType;
return result;
}
QT_END_NAMESPACE QT_END_NAMESPACE

1
tests/auto/corelib/kernel/kernel.pro
View File

@ -1,6 +1,7 @@
TEMPLATE=subdirs TEMPLATE=subdirs
SUBDIRS=\ SUBDIRS=\
qcoreapplication \ qcoreapplication \
qdeadlinetimer \
qelapsedtimer \ qelapsedtimer \
qeventdispatcher \ qeventdispatcher \
qeventloop \ qeventloop \

5
tests/auto/corelib/kernel/qdeadlinetimer/qdeadlinetimer.pro Normal file
View File

@ -0,0 +1,5 @@
CONFIG += testcase
TARGET = tst_qdeadlinetimer
QT = core testlib
SOURCES = tst_qdeadlinetimer.cpp

625
tests/auto/corelib/kernel/qdeadlinetimer/tst_qdeadlinetimer.cpp Normal file
View File

@ -0,0 +1,625 @@
/****************************************************************************
**
** Copyright (C) 2016 Intel Corporation.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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 General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** 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-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/QString>
#include <QtCore/QTime>
#include <QtCore/QDeadlineTimer>
#include <QtTest/QtTest>
#if QT_HAS_INCLUDE(<chrono>)
# include <chrono>
#endif
static const int minResolution = 100; // the minimum resolution for the tests
Q_DECLARE_METATYPE(Qt::TimerType)
class tst_QDeadlineTimer : public QObject
{
Q_OBJECT
private Q_SLOTS:
void initTestCase_data();
void basics();
void foreverness();
void current();
void deadlines();
void setDeadline();
void expire();
void stdchrono();
};
void tst_QDeadlineTimer::initTestCase_data()
{
qRegisterMetaType<Qt::TimerType>();
QTest::addColumn<Qt::TimerType>("timerType");
QTest::newRow("precise") << Qt::PreciseTimer;
QTest::newRow("coarse") << Qt::CoarseTimer;
}
void tst_QDeadlineTimer::basics()
{
QDeadlineTimer deadline;
QCOMPARE(deadline.timerType(), Qt::CoarseTimer);
QFETCH_GLOBAL(Qt::TimerType, timerType);
deadline = QDeadlineTimer(timerType);
QCOMPARE(deadline.timerType(), timerType);
QVERIFY(!deadline.isForever());
QCOMPARE(deadline, QDeadlineTimer(timerType));
QVERIFY(!(deadline != QDeadlineTimer(timerType)));
QVERIFY(!(deadline < QDeadlineTimer()));
QVERIFY(deadline <= QDeadlineTimer());
QVERIFY(deadline >= QDeadlineTimer());
QVERIFY(!(deadline > QDeadlineTimer()));
QVERIFY(!(deadline < deadline));
QVERIFY(deadline <= deadline);
QVERIFY(deadline >= deadline);
QVERIFY(!(deadline > deadline));
// should have expired, but we may be running too early after boot
QTRY_VERIFY_WITH_TIMEOUT(deadline.hasExpired(), 100);
QCOMPARE(deadline.remainingTime(), qint64(0));
QCOMPARE(deadline.remainingTimeNSecs(), qint64(0));
QCOMPARE(deadline.deadline(), qint64(0));
QCOMPARE(deadline.deadlineNSecs(), qint64(0));
deadline.setRemainingTime(0, timerType);
QCOMPARE(deadline.remainingTime(), qint64(0));
QCOMPARE(deadline.remainingTimeNSecs(), qint64(0));
QVERIFY(deadline.deadline() != 0);
QVERIFY(deadline.deadline() != std::numeric_limits<qint64>::max());
QVERIFY(deadline.deadlineNSecs() != 0);
QVERIFY(deadline.deadlineNSecs() != std::numeric_limits<qint64>::max());
deadline.setPreciseRemainingTime(0, 0, timerType);
QCOMPARE(deadline.remainingTime(), qint64(0));
QCOMPARE(deadline.remainingTimeNSecs(), qint64(0));
QVERIFY(deadline.deadline() != 0);
QVERIFY(deadline.deadline() != std::numeric_limits<qint64>::max());
QVERIFY(deadline.deadlineNSecs() != 0);
QVERIFY(deadline.deadlineNSecs() != std::numeric_limits<qint64>::max());
deadline.setDeadline(0, timerType);
QCOMPARE(deadline.remainingTime(), qint64(0));
QCOMPARE(deadline.remainingTimeNSecs(), qint64(0));
QCOMPARE(deadline.deadline(), qint64(0));
QCOMPARE(deadline.deadlineNSecs(), qint64(0));
deadline.setPreciseDeadline(0, 0, timerType);
QCOMPARE(deadline.remainingTime(), qint64(0));
QCOMPARE(deadline.remainingTimeNSecs(), qint64(0));
QCOMPARE(deadline.deadline(), qint64(0));
QCOMPARE(deadline.deadlineNSecs(), qint64(0));
}
void tst_QDeadlineTimer::foreverness()
{
QFETCH_GLOBAL(Qt::TimerType, timerType);
// we don't check whether timerType() is our type since it's possible it detects it's forever
QDeadlineTimer deadline = QDeadlineTimer::Forever;
QCOMPARE(deadline.timerType(), Qt::CoarseTimer);
QVERIFY(deadline.isForever());
QVERIFY(!deadline.hasExpired());
QCOMPARE(deadline.remainingTime(), qint64(-1));
QCOMPARE(deadline.remainingTimeNSecs(), qint64(-1));
QCOMPARE(deadline.deadline(), std::numeric_limits<qint64>::max());
QCOMPARE(deadline.deadlineNSecs(), std::numeric_limits<qint64>::max());
deadline = QDeadlineTimer(-1, timerType);
QVERIFY(deadline.isForever());
QVERIFY(!deadline.hasExpired());
QCOMPARE(deadline.remainingTime(), qint64(-1));
QCOMPARE(deadline.remainingTimeNSecs(), qint64(-1));
QCOMPARE(deadline.deadline(), std::numeric_limits<qint64>::max());
QCOMPARE(deadline.deadlineNSecs(), std::numeric_limits<qint64>::max());
deadline.setRemainingTime(-1, timerType);
QVERIFY(deadline.isForever());
QVERIFY(!deadline.hasExpired());
QCOMPARE(deadline.remainingTime(), qint64(-1));
QCOMPARE(deadline.remainingTimeNSecs(), qint64(-1));
QCOMPARE(deadline.deadline(), std::numeric_limits<qint64>::max());
QCOMPARE(deadline.deadlineNSecs(), std::numeric_limits<qint64>::max());
deadline.setPreciseRemainingTime(-1, 0, timerType);
QVERIFY(deadline.isForever());
QVERIFY(!deadline.hasExpired());
QCOMPARE(deadline.remainingTime(), qint64(-1));
QCOMPARE(deadline.remainingTimeNSecs(), qint64(-1));
QCOMPARE(deadline.deadline(), std::numeric_limits<qint64>::max());
QCOMPARE(deadline.deadlineNSecs(), std::numeric_limits<qint64>::max());
deadline.setPreciseRemainingTime(-1, -1, timerType);
QVERIFY(deadline.isForever());
QVERIFY(!deadline.hasExpired());
QCOMPARE(deadline.remainingTime(), qint64(-1));
QCOMPARE(deadline.remainingTimeNSecs(), qint64(-1));
QCOMPARE(deadline.deadline(), std::numeric_limits<qint64>::max());
QCOMPARE(deadline.deadlineNSecs(), std::numeric_limits<qint64>::max());
deadline.setDeadline(std::numeric_limits<qint64>::max(), timerType);
QVERIFY(deadline.isForever());
QVERIFY(!deadline.hasExpired());
QCOMPARE(deadline.remainingTime(), qint64(-1));
QCOMPARE(deadline.remainingTimeNSecs(), qint64(-1));
QCOMPARE(deadline.deadline(), std::numeric_limits<qint64>::max());
QCOMPARE(deadline.deadlineNSecs(), std::numeric_limits<qint64>::max());
deadline.setPreciseDeadline(std::numeric_limits<qint64>::max(), 0, timerType);
QVERIFY(deadline.isForever());
QVERIFY(!deadline.hasExpired());
QCOMPARE(deadline.remainingTime(), qint64(-1));
QCOMPARE(deadline.remainingTimeNSecs(), qint64(-1));
QCOMPARE(deadline.deadline(), std::numeric_limits<qint64>::max());
QCOMPARE(deadline.deadlineNSecs(), std::numeric_limits<qint64>::max());
QCOMPARE(deadline, deadline);
QVERIFY(!(deadline < deadline));
QVERIFY(deadline <= deadline);
QVERIFY(deadline >= deadline);
QVERIFY(!(deadline > deadline));
// adding to forever must still be forever
QDeadlineTimer deadline2 = deadline + 1;
QVERIFY(deadline2.isForever());
QVERIFY(!deadline2.hasExpired());
QCOMPARE(deadline2.remainingTime(), qint64(-1));
QCOMPARE(deadline2.remainingTimeNSecs(), qint64(-1));
QCOMPARE(deadline2.deadline(), std::numeric_limits<qint64>::max());
QCOMPARE(deadline2.deadlineNSecs(), std::numeric_limits<qint64>::max());
QCOMPARE(deadline2.timerType(), deadline.timerType());
QCOMPARE(deadline2 - deadline, qint64(0));
QCOMPARE(deadline2, deadline);
QVERIFY(!(deadline2 < deadline));
QVERIFY(deadline2 <= deadline);
QVERIFY(deadline2 >= deadline);
QVERIFY(!(deadline2 > deadline));
// subtracting from forever is *also* forever
deadline2 = deadline - 1;
QVERIFY(deadline2.isForever());
QVERIFY(!deadline2.hasExpired());
QCOMPARE(deadline2.remainingTime(), qint64(-1));
QCOMPARE(deadline2.remainingTimeNSecs(), qint64(-1));
QCOMPARE(deadline2.deadline(), std::numeric_limits<qint64>::max());
QCOMPARE(deadline2.deadlineNSecs(), std::numeric_limits<qint64>::max());
QCOMPARE(deadline2.timerType(), deadline.timerType());
QCOMPARE(deadline2 - deadline, qint64(0));
QCOMPARE(deadline2, deadline);
QVERIFY(!(deadline2 < deadline));
QVERIFY(deadline2 <= deadline);
QVERIFY(deadline2 >= deadline);
QVERIFY(!(deadline2 > deadline));
// compare and order against a default-constructed object
QDeadlineTimer expired;
QVERIFY(!(deadline == expired));
QVERIFY(deadline != expired);
QVERIFY(!(deadline < expired));
QVERIFY(!(deadline <= expired));
QVERIFY(deadline >= expired);
QVERIFY(deadline > expired);
}
void tst_QDeadlineTimer::current()
{
QFETCH_GLOBAL(Qt::TimerType, timerType);
auto deadline = QDeadlineTimer::current(timerType);
QVERIFY(deadline.hasExpired());
QVERIFY(!deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
QCOMPARE(deadline.remainingTime(), qint64(0));
QCOMPARE(deadline.remainingTimeNSecs(), qint64(0));
QVERIFY(deadline.deadline() != 0);
QVERIFY(deadline.deadline() != std::numeric_limits<qint64>::max());
QVERIFY(deadline.deadlineNSecs() != 0);
QVERIFY(deadline.deadlineNSecs() != std::numeric_limits<qint64>::max());
// subtracting from current should be "more expired"
QDeadlineTimer earlierDeadline = deadline - 1;
QVERIFY(earlierDeadline.hasExpired());
QVERIFY(!earlierDeadline.isForever());
QCOMPARE(earlierDeadline.timerType(), timerType);
QCOMPARE(earlierDeadline.remainingTime(), qint64(0));
QCOMPARE(earlierDeadline.remainingTimeNSecs(), qint64(0));
QVERIFY(earlierDeadline.deadline() != 0);
QVERIFY(earlierDeadline.deadline() != std::numeric_limits<qint64>::max());
QVERIFY(earlierDeadline.deadlineNSecs() != 0);
QVERIFY(earlierDeadline.deadlineNSecs() != std::numeric_limits<qint64>::max());
QCOMPARE(earlierDeadline.deadline(), deadline.deadline() - 1);
QCOMPARE(earlierDeadline.deadlineNSecs(), deadline.deadlineNSecs() - 1000*1000);
QCOMPARE(earlierDeadline - deadline, qint64(-1));
QVERIFY(earlierDeadline != deadline);
QVERIFY(earlierDeadline < deadline);
QVERIFY(earlierDeadline <= deadline);
QVERIFY(!(earlierDeadline >= deadline));
QVERIFY(!(earlierDeadline > deadline));
}
void tst_QDeadlineTimer::deadlines()
{
QFETCH_GLOBAL(Qt::TimerType, timerType);
QDeadlineTimer deadline(4 * minResolution, timerType);
QVERIFY(!deadline.hasExpired());
QVERIFY(!deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
QVERIFY(deadline.remainingTime() > (3 * minResolution));
QVERIFY(deadline.remainingTime() <= (4 * minResolution));
QVERIFY(deadline.remainingTimeNSecs() > (3000000 * minResolution));
QVERIFY(deadline.remainingTimeNSecs() <= (4000000 * minResolution));
QVERIFY(deadline.deadline() != 0);
QVERIFY(deadline.deadline() != std::numeric_limits<qint64>::max());
QVERIFY(deadline.deadlineNSecs() != 0);
QVERIFY(deadline.deadlineNSecs() != std::numeric_limits<qint64>::max());
deadline.setRemainingTime(4 * minResolution, timerType);
QVERIFY(!deadline.hasExpired());
QVERIFY(!deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
QVERIFY(deadline.remainingTime() > (3 * minResolution));
QVERIFY(deadline.remainingTime() <= (4 * minResolution));
QVERIFY(deadline.remainingTimeNSecs() > (3000000 * minResolution));
QVERIFY(deadline.remainingTimeNSecs() <= (4000000 * minResolution));
QVERIFY(deadline.deadline() != 0);
QVERIFY(deadline.deadline() != std::numeric_limits<qint64>::max());
QVERIFY(deadline.deadlineNSecs() != 0);
QVERIFY(deadline.deadlineNSecs() != std::numeric_limits<qint64>::max());
deadline.setPreciseRemainingTime(0, 4000000 * minResolution, timerType);
QVERIFY(!deadline.hasExpired());
QVERIFY(!deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
QVERIFY(deadline.remainingTime() > (3 * minResolution));
QVERIFY(deadline.remainingTime() <= (4 * minResolution));
QVERIFY(deadline.remainingTimeNSecs() > (3000000 * minResolution));
QVERIFY(deadline.remainingTimeNSecs() <= (4000000 * minResolution));
QVERIFY(deadline.deadline() != 0);
QVERIFY(deadline.deadline() != std::numeric_limits<qint64>::max());
QVERIFY(deadline.deadlineNSecs() != 0);
QVERIFY(deadline.deadlineNSecs() != std::numeric_limits<qint64>::max());
deadline.setPreciseRemainingTime(1, 0, timerType); // 1 sec
QVERIFY(!deadline.hasExpired());
QVERIFY(!deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
QVERIFY(deadline.remainingTime() > (1000 - minResolution));
QVERIFY(deadline.remainingTime() <= 1000);
QVERIFY(deadline.remainingTimeNSecs() > (1000 - minResolution)*1000*1000);
QVERIFY(deadline.remainingTimeNSecs() <= (1000*1000*1000));
QVERIFY(deadline.deadline() != 0);
QVERIFY(deadline.deadline() != std::numeric_limits<qint64>::max());
QVERIFY(deadline.deadlineNSecs() != 0);
QVERIFY(deadline.deadlineNSecs() != std::numeric_limits<qint64>::max());
// adding to a future deadline must still be further in the future
QDeadlineTimer laterDeadline = deadline + 1;
QVERIFY(!laterDeadline.hasExpired());
QVERIFY(!laterDeadline.isForever());
QCOMPARE(laterDeadline.timerType(), timerType);
QVERIFY(laterDeadline.remainingTime() > (1000 - minResolution));
QVERIFY(laterDeadline.remainingTime() <= 1001);
QVERIFY(laterDeadline.remainingTimeNSecs() > (1001 - minResolution)*1000*1000);
QVERIFY(laterDeadline.remainingTimeNSecs() <= (1001*1000*1000));
QVERIFY(laterDeadline.deadline() != 0);
QVERIFY(laterDeadline.deadline() != std::numeric_limits<qint64>::max());
QVERIFY(laterDeadline.deadlineNSecs() != 0);
QVERIFY(laterDeadline.deadlineNSecs() != std::numeric_limits<qint64>::max());
QCOMPARE(laterDeadline.deadline(), deadline.deadline() + 1);
QCOMPARE(laterDeadline.deadlineNSecs(), deadline.deadlineNSecs() + 1000*1000);
QCOMPARE(laterDeadline - deadline, qint64(1));
QVERIFY(laterDeadline != deadline);
QVERIFY(!(laterDeadline < deadline));
QVERIFY(!(laterDeadline <= deadline));
QVERIFY(laterDeadline >= deadline);
QVERIFY(laterDeadline > deadline);
// compare and order against a default-constructed object
QDeadlineTimer expired;
QVERIFY(!(deadline == expired));
QVERIFY(deadline != expired);
QVERIFY(!(deadline < expired));
QVERIFY(!(deadline <= expired));
QVERIFY(deadline >= expired);
QVERIFY(deadline > expired);
// compare and order against a forever deadline
QDeadlineTimer forever_(QDeadlineTimer::Forever);
QVERIFY(!(deadline == forever_));
QVERIFY(deadline != forever_);
QVERIFY(deadline < forever_);
QVERIFY(deadline <= forever_);
QVERIFY(!(deadline >= forever_));
QVERIFY(!(deadline > forever_));
}
void tst_QDeadlineTimer::setDeadline()
{
QFETCH_GLOBAL(Qt::TimerType, timerType);
auto now = QDeadlineTimer::current(timerType);
QDeadlineTimer deadline;
deadline.setDeadline(now.deadline(), timerType);
QVERIFY(deadline.hasExpired());
QVERIFY(!deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
QCOMPARE(deadline.remainingTime(), qint64(0));
QCOMPARE(deadline.remainingTimeNSecs(), qint64(0));
QCOMPARE(deadline.deadline(), now.deadline());
// don't check deadlineNSecs!
deadline.setPreciseDeadline(now.deadlineNSecs() / (1000 * 1000 * 1000),
now.deadlineNSecs() % (1000 * 1000 * 1000), timerType);
QVERIFY(deadline.hasExpired());
QVERIFY(!deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
QCOMPARE(deadline.remainingTime(), qint64(0));
QCOMPARE(deadline.remainingTimeNSecs(), qint64(0));
QCOMPARE(deadline.deadline(), now.deadline());
QCOMPARE(deadline.deadlineNSecs(), now.deadlineNSecs());
now = QDeadlineTimer::current(timerType);
deadline.setDeadline(now.deadline() + 4 * minResolution, timerType);
QVERIFY(!deadline.hasExpired());
QVERIFY(!deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
QVERIFY(deadline.remainingTime() > (3 * minResolution));
QVERIFY(deadline.remainingTime() <= (4 * minResolution));
QVERIFY(deadline.remainingTimeNSecs() > (3000000 * minResolution));
QVERIFY(deadline.remainingTimeNSecs() <= (4000000 * minResolution));
QCOMPARE(deadline.deadline(), now.deadline() + 4 * minResolution); // yes, it's exact
// don't check deadlineNSecs!
now = QDeadlineTimer::current(timerType);
qint64 nsec = now.deadlineNSecs() + 4000000 * minResolution;
deadline.setPreciseDeadline(nsec / (1000 * 1000 * 1000),
nsec % (1000 * 1000 * 1000), timerType);
QVERIFY(!deadline.hasExpired());
QVERIFY(!deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
QVERIFY(deadline.remainingTime() > (3 * minResolution));
QVERIFY(deadline.remainingTime() <= (4 * minResolution));
QVERIFY(deadline.remainingTimeNSecs() > (3000000 * minResolution));
QVERIFY(deadline.remainingTimeNSecs() <= (4000000 * minResolution));
QCOMPARE(deadline.deadline(), nsec / (1000 * 1000));
QCOMPARE(deadline.deadlineNSecs(), nsec);
}
void tst_QDeadlineTimer::expire()
{
QFETCH_GLOBAL(Qt::TimerType, timerType);
QDeadlineTimer deadline(minResolution, timerType);
QVERIFY(!deadline.hasExpired());
QVERIFY(!deadline.isForever());
qint64 previousDeadline = deadline.deadlineNSecs();
QTest::qSleep(2 * minResolution);
QCOMPARE(deadline.remainingTime(), qint64(0));
QCOMPARE(deadline.remainingTimeNSecs(), qint64(0));
QVERIFY(deadline.deadline() != 0);
QVERIFY(deadline.deadline() != std::numeric_limits<qint64>::max());
QVERIFY(deadline.deadlineNSecs() != 0);
QVERIFY(deadline.deadlineNSecs() != std::numeric_limits<qint64>::max());
QCOMPARE(deadline.deadlineNSecs(), previousDeadline);
}
void tst_QDeadlineTimer::stdchrono()
{
#if !QT_HAS_INCLUDE(<chrono>)
QSKIP("std::chrono not found on this system");
#else
using namespace std::chrono;
QFETCH_GLOBAL(Qt::TimerType, timerType);
// create some forevers
QDeadlineTimer deadline = milliseconds::max();
QVERIFY(deadline.isForever());
deadline = milliseconds::max();
QVERIFY(deadline.isForever());
deadline.setRemainingTime(milliseconds::max(), timerType);
QVERIFY(deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
deadline = nanoseconds::max();
QVERIFY(deadline.isForever());
deadline.setRemainingTime(nanoseconds::max(), timerType);
QVERIFY(deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
deadline = hours::max();
QVERIFY(deadline.isForever());
deadline.setRemainingTime(hours::max(), timerType);
QVERIFY(deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
deadline = time_point<system_clock>::max();
QVERIFY(deadline.isForever());
deadline.setDeadline(time_point<system_clock>::max(), timerType);
QVERIFY(deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
deadline = time_point<steady_clock>::max();
QVERIFY(deadline.isForever());
deadline.setDeadline(time_point<steady_clock>::max(), timerType);
QVERIFY(deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
QVERIFY(deadline == time_point<steady_clock>::max());
QVERIFY(deadline == time_point<system_clock>::max());
QCOMPARE(deadline.remainingTimeAsDuration(), nanoseconds::max());
// make it expired
deadline = time_point<system_clock>();
QVERIFY(deadline.hasExpired());
deadline.setDeadline(time_point<system_clock>(), timerType);
QVERIFY(deadline.hasExpired());
QCOMPARE(deadline.timerType(), timerType);
deadline = time_point<steady_clock>();
QVERIFY(deadline.hasExpired());
deadline.setDeadline(time_point<steady_clock>(), timerType);
QVERIFY(deadline.hasExpired());
QCOMPARE(deadline.timerType(), timerType);
QCOMPARE(deadline.remainingTimeAsDuration(), nanoseconds::zero());
auto steady_before = steady_clock::now();
auto system_before = system_clock::now();
QTest::qSleep(minResolution);
auto now = QDeadlineTimer::current(timerType);
QTest::qSleep(minResolution);
auto steady_after = steady_clock::now();
auto system_after = system_clock::now();
{
auto diff = duration_cast<milliseconds>(steady_after - now.deadline<steady_clock>());
QVERIFY2(diff.count() > minResolution/2, QByteArray::number(qint64(diff.count())));
QVERIFY2(diff.count() < 3*minResolution/2, QByteArray::number(qint64(diff.count())));
QDeadlineTimer dt_after(steady_after, timerType);
QVERIFY2(now < dt_after,
("now = " + QLocale().toString(now.deadlineNSecs()) +
"; after = " + QLocale().toString(dt_after.deadlineNSecs())).toLatin1());
diff = duration_cast<milliseconds>(now.deadline<steady_clock>() - steady_before);
QVERIFY2(diff.count() > minResolution/2, QByteArray::number(qint64(diff.count())));
QVERIFY2(diff.count() < 3*minResolution/2, QByteArray::number(qint64(diff.count())));
QDeadlineTimer dt_before(steady_before, timerType);
QVERIFY2(now > dt_before,
("now = " + QLocale().toString(now.deadlineNSecs()) +
"; before = " + QLocale().toString(dt_before.deadlineNSecs())).toLatin1());
}
{
auto diff = duration_cast<milliseconds>(system_after - now.deadline<system_clock>());
QVERIFY2(diff.count() > minResolution/2, QByteArray::number(qint64(diff.count())));
QVERIFY2(diff.count() < 3*minResolution/2, QByteArray::number(qint64(diff.count())));
QDeadlineTimer dt_after(system_after, timerType);
QVERIFY2(now < dt_after,
("now = " + QLocale().toString(now.deadlineNSecs()) +
"; after = " + QLocale().toString(dt_after.deadlineNSecs())).toLatin1());
diff = duration_cast<milliseconds>(now.deadline<system_clock>() - system_before);
QVERIFY2(diff.count() > minResolution/2, QByteArray::number(qint64(diff.count())));
QVERIFY2(diff.count() < 3*minResolution/2, QByteArray::number(qint64(diff.count())));
QDeadlineTimer dt_before(system_before, timerType);
QVERIFY2(now > dt_before,
("now = " + QLocale().toString(now.deadlineNSecs()) +
"; before = " + QLocale().toString(dt_before.deadlineNSecs())).toLatin1());
}
// make it regular
now = QDeadlineTimer::current(timerType);
deadline.setRemainingTime(milliseconds(4 * minResolution), timerType);
QVERIFY(!deadline.hasExpired());
QVERIFY(!deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
QVERIFY(deadline.remainingTimeAsDuration() > milliseconds(3 * minResolution));
QVERIFY(deadline.remainingTimeAsDuration() < milliseconds(5 * minResolution));
QVERIFY(deadline.remainingTimeAsDuration() > nanoseconds(3000000 * minResolution));
QVERIFY(deadline.remainingTimeAsDuration() < nanoseconds(5000000 * minResolution));
QVERIFY(deadline.deadline<steady_clock>() > (steady_clock::now() + milliseconds(3 * minResolution)));
QVERIFY(deadline.deadline<steady_clock>() < (steady_clock::now() + milliseconds(5 * minResolution)));
QVERIFY(deadline.deadline<system_clock>() > (system_clock::now() + milliseconds(3 * minResolution)));
QVERIFY(deadline.deadline<system_clock>() < (system_clock::now() + milliseconds(5 * minResolution)));
if (timerType == Qt::CoarseTimer) {
QVERIFY(deadline > (now + milliseconds(3 * minResolution)));
QVERIFY(deadline < (now + milliseconds(5 * minResolution)));
QVERIFY(deadline > (now + nanoseconds(3000000 * minResolution)));
QVERIFY(deadline < (now + nanoseconds(5000000 * minResolution)));
QVERIFY(deadline > milliseconds(3 * minResolution));
QVERIFY(deadline < milliseconds(5 * minResolution));
QVERIFY(deadline > nanoseconds(3000000 * minResolution));
QVERIFY(deadline < nanoseconds(5000000 * minResolution));
QVERIFY(deadline >= steady_clock::now());
QVERIFY(deadline >= system_clock::now());
}
now = QDeadlineTimer::current(timerType);
deadline = QDeadlineTimer(seconds(1), timerType);
QVERIFY(!deadline.hasExpired());
QVERIFY(!deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
QVERIFY(deadline.remainingTimeAsDuration() > (seconds(1) - milliseconds(minResolution)));
QVERIFY(deadline.remainingTimeAsDuration() <= seconds(1));
QVERIFY(deadline.deadline<steady_clock>() > (steady_clock::now() + seconds(1) - milliseconds(minResolution)));
QVERIFY(deadline.deadline<steady_clock>() <= (steady_clock::now() + seconds(1) + milliseconds(minResolution)));
QVERIFY(deadline.deadline<system_clock>() > (system_clock::now() + seconds(1) - milliseconds(minResolution)));
QVERIFY(deadline.deadline<system_clock>() <= (system_clock::now() + seconds(1) + milliseconds(minResolution)));
if (timerType == Qt::CoarseTimer) {
QVERIFY(deadline > (seconds(1) - milliseconds(minResolution)));
QVERIFY(deadline <= seconds(1));
}
now = QDeadlineTimer::current(timerType);
deadline.setRemainingTime(hours(1), timerType);
QVERIFY(!deadline.hasExpired());
QVERIFY(!deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
QVERIFY(deadline.remainingTimeAsDuration() > (hours(1) - milliseconds(minResolution)));
QVERIFY(deadline.remainingTimeAsDuration() <= hours(1));
QVERIFY(deadline.deadline<steady_clock>() > (steady_clock::now() + hours(1) - milliseconds(minResolution)));
QVERIFY(deadline.deadline<steady_clock>() <= (steady_clock::now() + hours(1) + milliseconds(minResolution)));
QVERIFY(deadline.deadline<system_clock>() > (system_clock::now() + hours(1) - milliseconds(minResolution)));
QVERIFY(deadline.deadline<system_clock>() <= (system_clock::now() + hours(1) + milliseconds(minResolution)));
now = QDeadlineTimer::current(timerType);
deadline.setDeadline(system_clock::now() + seconds(1), timerType);
QVERIFY(!deadline.hasExpired());
QVERIFY(!deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
QVERIFY(deadline.remainingTimeAsDuration() > (seconds(1) - milliseconds(minResolution)));
QVERIFY(deadline.remainingTimeAsDuration() <= seconds(1));
QVERIFY(deadline.deadline<steady_clock>() > (steady_clock::now() + seconds(1) - milliseconds(minResolution)));
QVERIFY(deadline.deadline<steady_clock>() <= (steady_clock::now() + seconds(1) + milliseconds(minResolution)));
QVERIFY(deadline.deadline<system_clock>() > (system_clock::now() + seconds(1) - milliseconds(minResolution)));
QVERIFY(deadline.deadline<system_clock>() <= (system_clock::now() + seconds(1) + milliseconds(minResolution)));
now = QDeadlineTimer::current(timerType);
deadline.setDeadline(steady_clock::now() + seconds(1), timerType);
QVERIFY(!deadline.hasExpired());
QVERIFY(!deadline.isForever());
QCOMPARE(deadline.timerType(), timerType);
QVERIFY(deadline.remainingTimeAsDuration() > (seconds(1) - milliseconds(minResolution)));
QVERIFY(deadline.remainingTimeAsDuration() <= seconds(1));
QVERIFY(deadline.deadline<steady_clock>() > (steady_clock::now() + seconds(1) - milliseconds(minResolution)));
QVERIFY(deadline.deadline<steady_clock>() <= (steady_clock::now() + seconds(1) + milliseconds(minResolution)));
QVERIFY(deadline.deadline<system_clock>() > (system_clock::now() + seconds(1) - milliseconds(minResolution)));
QVERIFY(deadline.deadline<system_clock>() <= (system_clock::now() + seconds(1) + milliseconds(minResolution)));
#endif
}
QTEST_MAIN(tst_QDeadlineTimer)
#include "tst_qdeadlinetimer.moc"