qelapsedtimer_unix.cpp

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/home/qt/qt5_coco/qt5/qtbase/src/corelib/tools/qelapsedtimer_unix.cpp

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1	/****************************************************************************	-
2	**	-
3	** Copyright (C) 2016 The Qt Company Ltd.	-
4	** Copyright (C) 2016 Intel Corporation.	-
5	** Contact: https://www.qt.io/licensing/	-
6	**	-
7	** This file is part of the QtCore module of the Qt Toolkit.	-
8	**	-
9	** $QT_BEGIN_LICENSE:LGPL$	-
10	** Commercial License Usage	-
11	** Licensees holding valid commercial Qt licenses may use this file in	-
12	** accordance with the commercial license agreement provided with the	-
13	** Software or, alternatively, in accordance with the terms contained in	-
14	** a written agreement between you and The Qt Company. For licensing terms	-
15	** and conditions see https://www.qt.io/terms-conditions. For further	-
16	** information use the contact form at https://www.qt.io/contact-us.	-
17	**	-
18	** GNU Lesser General Public License Usage	-
19	** Alternatively, this file may be used under the terms of the GNU Lesser	-
20	** General Public License version 3 as published by the Free Software	-
21	** Foundation and appearing in the file LICENSE.LGPL3 included in the	-
22	** packaging of this file. Please review the following information to	-
23	** ensure the GNU Lesser General Public License version 3 requirements	-
24	** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.	-
25	**	-
26	** GNU General Public License Usage	-
27	** Alternatively, this file may be used under the terms of the GNU	-
28	** General Public License version 2.0 or (at your option) the GNU General	-
29	** Public license version 3 or any later version approved by the KDE Free	-
30	** Qt Foundation. The licenses are as published by the Free Software	-
31	** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3	-
32	** included in the packaging of this file. Please review the following	-
33	** information to ensure the GNU General Public License requirements will	-
34	** be met: https://www.gnu.org/licenses/gpl-2.0.html and	-
35	** https://www.gnu.org/licenses/gpl-3.0.html.	-
36	**	-
37	** $QT_END_LICENSE$	-
38	**	-
39	****************************************************************************/	-
40		-
41	#include "qelapsedtimer.h"	-
42	#if defined(Q_OS_VXWORKS)	-
43	#include "qfunctions_vxworks.h"	-
44	#else	-
45	#include <sys/time.h>	-
46	#include <time.h>	-
47	#endif	-
48	#include <unistd.h>	-
49		-
50	#include <qatomic.h>	-
51	#include "private/qcore_unix_p.h"	-
52		-
53	#if defined(QT_NO_CLOCK_MONOTONIC) \|\| defined(QT_BOOTSTRAPPED)	-
54	// turn off the monotonic clock	-
55	# ifdef _POSIX_MONOTONIC_CLOCK	-
56	# undef _POSIX_MONOTONIC_CLOCK	-
57	# endif	-
58	# define _POSIX_MONOTONIC_CLOCK -1	-
59	#endif	-
60		-
61	QT_BEGIN_NAMESPACE	-
62		-
63	/*	-
64	* Design:	-
65	*	-
66	* POSIX offers a facility to select the system's monotonic clock when getting	-
67	* the current timestamp. Whereas the functions are mandatory in POSIX.1-2008,	-
68	* the presence of a monotonic clock is a POSIX Option (see the document	-
69	* http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap02.html#tag_02_01_06 )	-
70	*	-
71	* The macro _POSIX_MONOTONIC_CLOCK can therefore assume the following values:	-
72	* -1 monotonic clock is never supported on this system	-
73	* 0 monotonic clock might be supported, runtime check is needed	-
74	* >1 (such as 200809L) monotonic clock is always supported	-
75	*	-
76	* The unixCheckClockType() function will return the clock to use: either	-
77	* CLOCK_MONOTONIC or CLOCK_REALTIME. In the case the POSIX option has a value	-
78	* of zero, then this function stores a static that contains the clock to be	-
79	* used.	-
80	*	-
81	* There's one extra case, which is when CLOCK_REALTIME isn't defined. When	-
82	* that's the case, we'll emulate the clock_gettime function with gettimeofday.	-
83	*	-
84	* Conforming to:	-
85	* POSIX.1b-1993 section "Clocks and Timers"	-
86	* included in UNIX98 (Single Unix Specification v2)	-
87	* included in POSIX.1-2001	-
88	* see http://pubs.opengroup.org/onlinepubs/9699919799/functions/clock_getres.html	-
89	*/	-
90		-
91	#if !defined(CLOCK_REALTIME)	-
92	# define CLOCK_REALTIME 0	-
93	static inline void qt_clock_gettime(int, struct timespec *ts)	-
94	{	-
95	// support clock_gettime with gettimeofday	-
96	struct timeval tv;	-
97	gettimeofday(&tv, 0);	-
98	ts->tv_sec = tv.tv_sec;	-
99	ts->tv_nsec = tv.tv_usec * 1000;	-
100	}	-
101		-
102	# ifdef _POSIX_MONOTONIC_CLOCK	-
103	# undef _POSIX_MONOTONIC_CLOCK	-
104	# define _POSIX_MONOTONIC_CLOCK -1	-
105	# endif	-
106	#else	-
107	static inline void qt_clock_gettime(clockid_t clock, struct timespec *ts)	-
108	{	-
109	clock_gettime(clock, ts);	-
110	}	-
111	#endif	-
112		-
113	static int unixCheckClockType()	-
114	{	-
	#if#ifdef Q_OS_LINUX
116	// Despite glibc claiming that we should check at runtime, the Linux kernel	-
117	// always supports the monotonic clock	-
118	executed 19794545 times by 907 tests: `return 1;` Executed by: tst_Collections tst_Compiler tst_Gestures tst_Lancelot tst_LargeFile tst_ModelTest tst_NetworkSelfTest tst_PlatformSocketEngine tst_QAbstractAnimation tst_QAbstractButton tst_QAbstractFileEngine tst_QAbstractItemModel tst_QAbstractItemView tst_QAbstractNetworkCache tst_QAbstractPrintDialog tst_QAbstractProxyModel tst_QAbstractScrollArea tst_QAbstractSlider tst_QAbstractSocket tst_QAbstractSpinBox tst_QAbstractTextDocumentLayout tst_QAccessibility tst_QAction tst_QActionGroup tst_QAlgorithms ... return CLOCK_MONOTONIC; executed 19794545 times by 907 tests: `return 1;` Executed by: tst_Collections tst_Compiler tst_Gestures tst_Lancelot tst_LargeFile tst_ModelTest tst_NetworkSelfTest tst_PlatformSocketEngine tst_QAbstractAnimation tst_QAbstractButton tst_QAbstractFileEngine tst_QAbstractItemModel tst_QAbstractItemView tst_QAbstractNetworkCache tst_QAbstractPrintDialog tst_QAbstractProxyModel tst_QAbstractScrollArea tst_QAbstractSlider tst_QAbstractSocket tst_QAbstractSpinBox tst_QAbstractTextDocumentLayout tst_QAccessibility tst_QAction tst_QActionGroup tst_QAlgorithms ...	19794545
119	#elif (_POSIX_MONOTONIC_CLOCK-0 == 0) && defined(_SC_MONOTONIC_CLOCK)	-
120	// we need a value we can store in a clockid_t that isn't a valid clock	-
121	// check if the valid ones are both non-negative or both non-positive	-
122	# if CLOCK_MONOTONIC >= 0 && CLOCK_REALTIME >= 0	-
123	# define IS_VALID_CLOCK(clock) (clock >= 0)	-
124	# define INVALID_CLOCK -1	-
125	# elif CLOCK_MONOTONIC <= 0 && CLOCK_REALTIME <= 0	-
126	# define IS_VALID_CLOCK(clock) (clock <= 0)	-
127	# define INVALID_CLOCK 1	-
128	# else	-
129	# error "Sorry, your system has weird values for CLOCK_MONOTONIC and CLOCK_REALTIME"	-
130	# endif	-
131		-
132	static QBasicAtomicInt clockToUse = Q_BASIC_ATOMIC_INITIALIZER(INVALID_CLOCK);	-
133	int clock = clockToUse.loadAcquire();	-
134	if (Q_LIKELY(IS_VALID_CLOCK(clock)))	-
135	return clock;	-
136		-
137	// detect if the system supports monotonic timers	-
138	clock = sysconf(_SC_MONOTONIC_CLOCK) > 0 ? CLOCK_MONOTONIC : CLOCK_REALTIME;	-
139	clockToUse.storeRelease(clock);	-
140	return clock;	-
141		-
142	# undef INVALID_CLOCK	-
143	# undef IS_VALID_CLOCK	-
144	#elif (_POSIX_MONOTONIC_CLOCK-0) > 0	-
145	return CLOCK_MONOTONIC;	-
146	#else	-
147	return CLOCK_REALTIME;	-
148	#endif	-
149	}	-
150		-
151	bool QElapsedTimer::isMonotonic() Q_DECL_NOTHROW	-
152	{	-
153	return clockType() == MonotonicClock; executed 4145156 times by 666 tests: `return clockType() == MonotonicClock;` Executed by: tst_Collections tst_Compiler tst_Gestures tst_Lancelot tst_LargeFile tst_ModelTest tst_NetworkSelfTest tst_PlatformSocketEngine tst_QAbstractAnimation tst_QAbstractButton tst_QAbstractFileEngine tst_QAbstractItemModel tst_QAbstractItemView tst_QAbstractNetworkCache tst_QAbstractPrintDialog tst_QAbstractProxyModel tst_QAbstractScrollArea tst_QAbstractSlider tst_QAbstractSocket tst_QAbstractSpinBox tst_QAbstractTextDocumentLayout tst_QAccessibility tst_QAction tst_QActionGroup tst_QAlgorithms ...	4145156
154	}	-
155		-
156	QElapsedTimer::ClockType QElapsedTimer::clockType() Q_DECL_NOTHROW	-
157	{	-
158	return unixCheckClockType() == CLOCK_REALTIME ? SystemTime : MonotonicClock; executed 6365588 times by 903 tests: `return unixCheckClockType() == 0 ? SystemTime : MonotonicClock;` Executed by: tst_Collections tst_Compiler tst_Gestures tst_Lancelot tst_LargeFile tst_ModelTest tst_NetworkSelfTest tst_PlatformSocketEngine tst_QAbstractAnimation tst_QAbstractButton tst_QAbstractFileEngine tst_QAbstractItemModel tst_QAbstractItemView tst_QAbstractNetworkCache tst_QAbstractPrintDialog tst_QAbstractProxyModel tst_QAbstractScrollArea tst_QAbstractSlider tst_QAbstractSocket tst_QAbstractSpinBox tst_QAbstractTextDocumentLayout tst_QAccessibility tst_QAction tst_QActionGroup tst_QAlgorithms ...	6365588
159	}	-
160		-
161	static inline void do_gettime(qint64 sec, qint64 frac)	-
162	{	-
163	timespec ts;	-
164	qt_clock_gettime(unixCheckClockType(), &ts);	-
165	*sec = ts.tv_sec;	-
166	*frac = ts.tv_nsec;	-
167	}	-
168		-
169	// used in qcore_unix.cpp and qeventdispatcher_unix.cpp	-
170	struct timespec qt_gettime() Q_DECL_NOTHROW	-
171	{	-
172	qint64 sec, frac;	-
173	do_gettime(&sec, &frac);	-
174		-
175	timespec tv;	-
176	tv.tv_sec = sec;	-
177	tv.tv_nsec = frac;	-
178		-
179	return tv; executed 7483893 times by 552 tests: `return tv;` Executed by: tst_Collections tst_Gestures tst_Lancelot tst_LargeFile tst_ModelTest tst_NetworkSelfTest tst_PlatformSocketEngine tst_QAbstractAnimation tst_QAbstractButton tst_QAbstractFileEngine tst_QAbstractItemModel tst_QAbstractItemView tst_QAbstractNetworkCache tst_QAbstractPrintDialog tst_QAbstractProxyModel tst_QAbstractScrollArea tst_QAbstractSlider tst_QAbstractSpinBox tst_QAbstractTextDocumentLayout tst_QAccessibility tst_QAction tst_QActionGroup tst_QAlgorithms tst_QApplication tst_QArrayData ...	7483893
180	}	-
181		-
182	void qt_nanosleep(timespec amount)	-
183	{	-
184	// We'd like to use clock_nanosleep.	-
185	//	-
186	// But clock_nanosleep is from POSIX.1-2001 and both are not	-
187	// affected by clock changes when using relative sleeps, even for	-
188	// CLOCK_REALTIME.	-
189	//	-
190	// nanosleep is POSIX.1-1993	-
191		-
192	int r;	-
193	EINTR_LOOP(r, nanosleep(&amount, &amount));	-
194	}	-
195		-
196	static qint64 elapsedAndRestart(qint64 sec, qint64 frac,	-
197	qint64 nowsec, qint64 nowfrac)	-
198	{	-
199	do_gettime(nowsec, nowfrac);	-
200	sec = *nowsec - sec;	-
201	frac = *nowfrac - frac;	-
202	return (sec * Q_INT64_C(1000000000) + frac) / Q_INT64_C(1000000);	-
203	}	-
204		-
205	void QElapsedTimer::start() Q_DECL_NOTHROW	-
206	{	-
207	do_gettime(&t1, &t2);	-
208	} executed 3238936 times by 522 tests: `end of block` Executed by: tst_Collections tst_Compiler tst_Gestures tst_Lancelot tst_LargeFile tst_ModelTest tst_NetworkSelfTest tst_PlatformSocketEngine tst_QAbstractAnimation tst_QAbstractButton tst_QAbstractFileEngine tst_QAbstractItemModel tst_QAbstractItemView tst_QAbstractNetworkCache tst_QAbstractPrintDialog tst_QAbstractProxyModel tst_QAbstractScrollArea tst_QAbstractSlider tst_QAbstractSocket tst_QAbstractSpinBox tst_QAbstractTextDocumentLayout tst_QAccessibility tst_QAction tst_QActionGroup tst_QAlgorithms ...	3238936
209		-
210	qint64 QElapsedTimer::restart() Q_DECL_NOTHROW	-
211	{	-
212	return elapsedAndRestart(t1, t2, &t1, &t2); executed 16652 times by 507 tests: `return elapsedAndRestart(t1, t2, &t1, &t2);` Executed by: tst_Collections tst_Compiler tst_Gestures tst_Lancelot tst_LargeFile tst_ModelTest tst_NetworkSelfTest tst_PlatformSocketEngine tst_QAbstractAnimation tst_QAbstractButton tst_QAbstractFileEngine tst_QAbstractItemModel tst_QAbstractItemView tst_QAbstractNetworkCache tst_QAbstractPrintDialog tst_QAbstractProxyModel tst_QAbstractScrollArea tst_QAbstractSlider tst_QAbstractSocket tst_QAbstractSpinBox tst_QAbstractTextDocumentLayout tst_QAccessibility tst_QAction tst_QActionGroup tst_QAlgorithms ...	16652
213	}	-
214		-
215	qint64 QElapsedTimer::nsecsElapsed() const Q_DECL_NOTHROW	-
216	{	-
217	qint64 sec, frac;	-
218	do_gettime(&sec, &frac);	-
219	sec = sec - t1;	-
220	frac = frac - t2;	-
221	return sec * Q_INT64_C(1000000000) + frac; executed 2689476 times by 517 tests: `return sec * static_cast<long long>(1000000000LL) + frac;` Executed by: tst_Collections tst_Compiler tst_Gestures tst_Lancelot tst_LargeFile tst_ModelTest tst_NetworkSelfTest tst_PlatformSocketEngine tst_QAbstractAnimation tst_QAbstractButton tst_QAbstractFileEngine tst_QAbstractItemModel tst_QAbstractItemView tst_QAbstractNetworkCache tst_QAbstractPrintDialog tst_QAbstractProxyModel tst_QAbstractScrollArea tst_QAbstractSlider tst_QAbstractSocket tst_QAbstractSpinBox tst_QAbstractTextDocumentLayout tst_QAccessibility tst_QAction tst_QActionGroup tst_QAlgorithms ...	2689476
222	}	-
223		-
224	qint64 QElapsedTimer::elapsed() const Q_DECL_NOTHROW	-
225	{	-
226	return nsecsElapsed() / Q_INT64_C(1000000); executed 2685921 times by 241 tests: `return nsecsElapsed() / static_cast<long long>(1000000LL);` Executed by: tst_Gestures tst_Lancelot tst_ModelTest tst_NetworkSelfTest tst_QAbstractAnimation tst_QAbstractButton tst_QAbstractItemView tst_QAbstractNetworkCache tst_QAbstractScrollArea tst_QAbstractSlider tst_QAbstractSpinBox tst_QAccessibility tst_QAction tst_QActionGroup tst_QApplication tst_QBackingStore tst_QBoxLayout tst_QButtonGroup tst_QByteDataBuffer tst_QCalendarWidget tst_QCheckBox tst_QClipboard tst_QColorDialog tst_QColumnView tst_QComboBox ...	2685921
227	}	-
228		-
229	qint64 QElapsedTimer::msecsSinceReference() const Q_DECL_NOTHROW	-
230	{	-
231	return t1 * Q_INT64_C(1000) + t2 / Q_INT64_C(1000000); executed 6 times by 1 test: `return t1 * static_cast<long long>(1000LL) + t2 / static_cast<long long>(1000000LL);` Executed by: tst_QElapsedTimer	6
232	}	-
233		-
234	qint64 QElapsedTimer::msecsTo(const QElapsedTimer &other) const Q_DECL_NOTHROW	-
235	{	-
236	qint64 secs = other.t1 - t1;	-
237	qint64 fraction = other.t2 - t2;	-
238	return (secs * Q_INT64_C(1000000000) + fraction) / Q_INT64_C(1000000); executed 6983 times by 8 tests: `return (secs * static_cast<long long>(1000000000LL) + fraction) / static_cast<long long>(1000000LL);` Executed by: tst_QCompleter tst_QElapsedTimer tst_QFileDialog2 tst_QFileSystemModel tst_QFiledialog tst_QGraphicsProxyWidget tst_QPrinter tst_languageChange	6983
239	}	-
240		-
241	qint64 QElapsedTimer::secsTo(const QElapsedTimer &other) const Q_DECL_NOTHROW	-
242	{	-
243	return other.t1 - t1; executed 1 time by 1 test: `return other.t1 - t1;` Executed by: tst_QElapsedTimer	1
244	}	-
245		-
246	bool operator<(const QElapsedTimer &v1, const QElapsedTimer &v2) Q_DECL_NOTHROW	-
247	{	-
248	return v1.t1 < v2.t1 \|\| (v1.t1 == v2.t1 && v1.t2 < v2.t2); executed 2 times by 1 test: `return v1.t1 < v2.t1 \|\| (v1.t1 == v2.t1 && v1.t2 < v2.t2);` Executed by: tst_QElapsedTimer	2
249	}	-
250		-
251	QT_END_NAMESPACE	-

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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 "qelapsedtimer.h"

#if defined(Q_OS_VXWORKS)

#include "qfunctions_vxworks.h"

#else

#include <sys/time.h>

#include <time.h>

#endif

#include <unistd.h>

#include <qatomic.h>

#include "private/qcore_unix_p.h"

#if defined(QT_NO_CLOCK_MONOTONIC) || defined(QT_BOOTSTRAPPED)

// turn off the monotonic clock

# ifdef _POSIX_MONOTONIC_CLOCK

# undef _POSIX_MONOTONIC_CLOCK

# endif

# define _POSIX_MONOTONIC_CLOCK -1

#endif

QT_BEGIN_NAMESPACE

* Design:

* POSIX offers a facility to select the system's monotonic clock when getting

* the current timestamp. Whereas the functions are mandatory in POSIX.1-2008,

* the presence of a monotonic clock is a POSIX Option (see the document

* http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap02.html#tag_02_01_06 )

* The macro _POSIX_MONOTONIC_CLOCK can therefore assume the following values:

* -1 monotonic clock is never supported on this system

* 0 monotonic clock might be supported, runtime check is needed

* >1 (such as 200809L) monotonic clock is always supported

* The unixCheckClockType() function will return the clock to use: either

* CLOCK_MONOTONIC or CLOCK_REALTIME. In the case the POSIX option has a value

* of zero, then this function stores a static that contains the clock to be

* used.

* There's one extra case, which is when CLOCK_REALTIME isn't defined. When

* that's the case, we'll emulate the clock_gettime function with gettimeofday.

* Conforming to:

* POSIX.1b-1993 section "Clocks and Timers"

* included in UNIX98 (Single Unix Specification v2)

* included in POSIX.1-2001

* see http://pubs.opengroup.org/onlinepubs/9699919799/functions/clock_getres.html

#if !defined(CLOCK_REALTIME)

# define CLOCK_REALTIME 0

static inline void qt_clock_gettime(int, struct timespec *ts)

{

// support clock_gettime with gettimeofday

struct timeval tv;

gettimeofday(&tv, 0);

ts->tv_sec = tv.tv_sec;

ts->tv_nsec = tv.tv_usec * 1000;

100

}

101

102

# ifdef _POSIX_MONOTONIC_CLOCK

103

# undef _POSIX_MONOTONIC_CLOCK

104

# define _POSIX_MONOTONIC_CLOCK -1

105

# endif

106

#else

107

static inline void qt_clock_gettime(clockid_t clock, struct timespec *ts)

108

{

109

clock_gettime(clock, ts);

}

#endif

static int unixCheckClockType()

114

{

#if#ifdef Q_OS_LINUX

116

// Despite glibc claiming that we should check at runtime, the Linux kernel

117

// always supports the monotonic clock

118

executed 19794545 times by 907 tests: return 1;

Executed by:

tst_Collections
tst_Compiler
tst_Gestures
tst_Lancelot
tst_LargeFile
tst_ModelTest
tst_NetworkSelfTest
tst_PlatformSocketEngine
tst_QAbstractAnimation
tst_QAbstractButton
tst_QAbstractFileEngine
tst_QAbstractItemModel
tst_QAbstractItemView
tst_QAbstractNetworkCache
tst_QAbstractPrintDialog
tst_QAbstractProxyModel
tst_QAbstractScrollArea
tst_QAbstractSlider
tst_QAbstractSocket
tst_QAbstractSpinBox
tst_QAbstractTextDocumentLayout
tst_QAccessibility
tst_QAction
tst_QActionGroup
tst_QAlgorithms
...

return CLOCK_MONOTONIC;

executed 19794545 times by 907 tests: return 1;

Executed by:

tst_Collections
tst_Compiler
tst_Gestures
tst_Lancelot
tst_LargeFile
tst_ModelTest
tst_NetworkSelfTest
tst_PlatformSocketEngine
tst_QAbstractAnimation
tst_QAbstractButton
tst_QAbstractFileEngine
tst_QAbstractItemModel
tst_QAbstractItemView
tst_QAbstractNetworkCache
tst_QAbstractPrintDialog
tst_QAbstractProxyModel
tst_QAbstractScrollArea
tst_QAbstractSlider
tst_QAbstractSocket
tst_QAbstractSpinBox
tst_QAbstractTextDocumentLayout
tst_QAccessibility
tst_QAction
tst_QActionGroup
tst_QAlgorithms
...

19794545

119

#elif (_POSIX_MONOTONIC_CLOCK-0 == 0) && defined(_SC_MONOTONIC_CLOCK)

120

// we need a value we can store in a clockid_t that isn't a valid clock

121

// check if the valid ones are both non-negative or both non-positive

122

# if CLOCK_MONOTONIC >= 0 && CLOCK_REALTIME >= 0

123

# define IS_VALID_CLOCK(clock) (clock >= 0)

124

# define INVALID_CLOCK -1

125

# elif CLOCK_MONOTONIC <= 0 && CLOCK_REALTIME <= 0

126

# define IS_VALID_CLOCK(clock) (clock <= 0)

127

# define INVALID_CLOCK 1

128

# else

129

# error "Sorry, your system has weird values for CLOCK_MONOTONIC and CLOCK_REALTIME"

130

# endif

131

132

static QBasicAtomicInt clockToUse = Q_BASIC_ATOMIC_INITIALIZER(INVALID_CLOCK);

133

int clock = clockToUse.loadAcquire();

134

if (Q_LIKELY(IS_VALID_CLOCK(clock)))

135

return clock;

136

137

// detect if the system supports monotonic timers

138

clock = sysconf(_SC_MONOTONIC_CLOCK) > 0 ? CLOCK_MONOTONIC : CLOCK_REALTIME;

139

clockToUse.storeRelease(clock);

140

return clock;

141

142

# undef INVALID_CLOCK

143

# undef IS_VALID_CLOCK

144

#elif (_POSIX_MONOTONIC_CLOCK-0) > 0

145

return CLOCK_MONOTONIC;

146

#else

147

return CLOCK_REALTIME;

#endif

}

bool QElapsedTimer::isMonotonic() Q_DECL_NOTHROW

152

{

153

return clockType() == MonotonicClock;

executed 4145156 times by 666 tests: return clockType() == MonotonicClock;

Executed by:

tst_Collections
tst_Compiler
tst_Gestures
tst_Lancelot
tst_LargeFile
tst_ModelTest
tst_NetworkSelfTest
tst_PlatformSocketEngine
tst_QAbstractAnimation
tst_QAbstractButton
tst_QAbstractFileEngine
tst_QAbstractItemModel
tst_QAbstractItemView
tst_QAbstractNetworkCache
tst_QAbstractPrintDialog
tst_QAbstractProxyModel
tst_QAbstractScrollArea
tst_QAbstractSlider
tst_QAbstractSocket
tst_QAbstractSpinBox
tst_QAbstractTextDocumentLayout
tst_QAccessibility
tst_QAction
tst_QActionGroup
tst_QAlgorithms
...

4145156

154

}

155

156

QElapsedTimer::ClockType QElapsedTimer::clockType() Q_DECL_NOTHROW

157

{

158

return unixCheckClockType() == CLOCK_REALTIME ? SystemTime : MonotonicClock;

executed 6365588 times by 903 tests: return unixCheckClockType() == 0 ? SystemTime : MonotonicClock;

Executed by:

tst_Collections
tst_Compiler
tst_Gestures
tst_Lancelot
tst_LargeFile
tst_ModelTest
tst_NetworkSelfTest
tst_PlatformSocketEngine
tst_QAbstractAnimation
tst_QAbstractButton
tst_QAbstractFileEngine
tst_QAbstractItemModel
tst_QAbstractItemView
tst_QAbstractNetworkCache
tst_QAbstractPrintDialog
tst_QAbstractProxyModel
tst_QAbstractScrollArea
tst_QAbstractSlider
tst_QAbstractSocket
tst_QAbstractSpinBox
tst_QAbstractTextDocumentLayout
tst_QAccessibility
tst_QAction
tst_QActionGroup
tst_QAlgorithms
...

6365588

159

}

160

161

static inline void do_gettime(qint64 *sec, qint64 *frac)

162

{

163

timespec ts;

164

qt_clock_gettime(unixCheckClockType(), &ts);

*sec = ts.tv_sec;

*frac = ts.tv_nsec;

}

// used in qcore_unix.cpp and qeventdispatcher_unix.cpp

170

struct timespec qt_gettime() Q_DECL_NOTHROW

171

{

172

qint64 sec, frac;

173

do_gettime(&sec, &frac);

timespec tv;

tv.tv_sec = sec;

tv.tv_nsec = frac;

return tv;

executed 7483893 times by 552 tests: return tv;

Executed by:

tst_Collections
tst_Gestures
tst_Lancelot
tst_LargeFile
tst_ModelTest
tst_NetworkSelfTest
tst_PlatformSocketEngine
tst_QAbstractAnimation
tst_QAbstractButton
tst_QAbstractFileEngine
tst_QAbstractItemModel
tst_QAbstractItemView
tst_QAbstractNetworkCache
tst_QAbstractPrintDialog
tst_QAbstractProxyModel
tst_QAbstractScrollArea
tst_QAbstractSlider
tst_QAbstractSpinBox
tst_QAbstractTextDocumentLayout
tst_QAccessibility
tst_QAction
tst_QActionGroup
tst_QAlgorithms
tst_QApplication
tst_QArrayData
...

7483893

180

}

181

182

void qt_nanosleep(timespec amount)

183

{

184

// We'd like to use clock_nanosleep.

185

186

// But clock_nanosleep is from POSIX.1-2001 and both are *not*

187

// affected by clock changes when using relative sleeps, even for

188

// CLOCK_REALTIME.

189

190

// nanosleep is POSIX.1-1993

191

192

int r;

193

EINTR_LOOP(r, nanosleep(&amount, &amount));

194

}

195

196

static qint64 elapsedAndRestart(qint64 sec, qint64 frac,

197

qint64 *nowsec, qint64 *nowfrac)

198

{

199

do_gettime(nowsec, nowfrac);

200

sec = *nowsec - sec;

201

frac = *nowfrac - frac;

202

return (sec * Q_INT64_C(1000000000) + frac) / Q_INT64_C(1000000);

203

}

204

205

void QElapsedTimer::start() Q_DECL_NOTHROW

206

{

207

do_gettime(&t1, &t2);

208

}

executed 3238936 times by 522 tests: end of block

Executed by:

tst_Collections
tst_Compiler
tst_Gestures
tst_Lancelot
tst_LargeFile
tst_ModelTest
tst_NetworkSelfTest
tst_PlatformSocketEngine
tst_QAbstractAnimation
tst_QAbstractButton
tst_QAbstractFileEngine
tst_QAbstractItemModel
tst_QAbstractItemView
tst_QAbstractNetworkCache
tst_QAbstractPrintDialog
tst_QAbstractProxyModel
tst_QAbstractScrollArea
tst_QAbstractSlider
tst_QAbstractSocket
tst_QAbstractSpinBox
tst_QAbstractTextDocumentLayout
tst_QAccessibility
tst_QAction
tst_QActionGroup
tst_QAlgorithms
...

3238936

209

210

qint64 QElapsedTimer::restart() Q_DECL_NOTHROW

211

{

212

return elapsedAndRestart(t1, t2, &t1, &t2);

executed 16652 times by 507 tests: return elapsedAndRestart(t1, t2, &t1, &t2);

Executed by:

tst_Collections
tst_Compiler
tst_Gestures
tst_Lancelot
tst_LargeFile
tst_ModelTest
tst_NetworkSelfTest
tst_PlatformSocketEngine
tst_QAbstractAnimation
tst_QAbstractButton
tst_QAbstractFileEngine
tst_QAbstractItemModel
tst_QAbstractItemView
tst_QAbstractNetworkCache
tst_QAbstractPrintDialog
tst_QAbstractProxyModel
tst_QAbstractScrollArea
tst_QAbstractSlider
tst_QAbstractSocket
tst_QAbstractSpinBox
tst_QAbstractTextDocumentLayout
tst_QAccessibility
tst_QAction
tst_QActionGroup
tst_QAlgorithms
...

16652

213

}

214

215

qint64 QElapsedTimer::nsecsElapsed() const Q_DECL_NOTHROW

216

{

217

qint64 sec, frac;

218

do_gettime(&sec, &frac);

219

sec = sec - t1;

220

frac = frac - t2;

221

return sec * Q_INT64_C(1000000000) + frac;

executed 2689476 times by 517 tests: return sec * static_cast<long long>(1000000000LL) + frac;

Executed by:

tst_Collections
tst_Compiler
tst_Gestures
tst_Lancelot
tst_LargeFile
tst_ModelTest
tst_NetworkSelfTest
tst_PlatformSocketEngine
tst_QAbstractAnimation
tst_QAbstractButton
tst_QAbstractFileEngine
tst_QAbstractItemModel
tst_QAbstractItemView
tst_QAbstractNetworkCache
tst_QAbstractPrintDialog
tst_QAbstractProxyModel
tst_QAbstractScrollArea
tst_QAbstractSlider
tst_QAbstractSocket
tst_QAbstractSpinBox
tst_QAbstractTextDocumentLayout
tst_QAccessibility
tst_QAction
tst_QActionGroup
tst_QAlgorithms
...

2689476

222

}

223

224

qint64 QElapsedTimer::elapsed() const Q_DECL_NOTHROW

225

{

226

return nsecsElapsed() / Q_INT64_C(1000000);

executed 2685921 times by 241 tests: return nsecsElapsed() / static_cast<long long>(1000000LL);

Executed by:

tst_Gestures
tst_Lancelot
tst_ModelTest
tst_NetworkSelfTest
tst_QAbstractAnimation
tst_QAbstractButton
tst_QAbstractItemView
tst_QAbstractNetworkCache
tst_QAbstractScrollArea
tst_QAbstractSlider
tst_QAbstractSpinBox
tst_QAccessibility
tst_QAction
tst_QActionGroup
tst_QApplication
tst_QBackingStore
tst_QBoxLayout
tst_QButtonGroup
tst_QByteDataBuffer
tst_QCalendarWidget
tst_QCheckBox
tst_QClipboard
tst_QColorDialog
tst_QColumnView
tst_QComboBox
...

2685921

227

}

228

229

qint64 QElapsedTimer::msecsSinceReference() const Q_DECL_NOTHROW

230

{

231

return t1 * Q_INT64_C(1000) + t2 / Q_INT64_C(1000000);

executed 6 times by 1 test: return t1 * static_cast<long long>(1000LL) + t2 / static_cast<long long>(1000000LL);

Executed by:

tst_QElapsedTimer

232

}

233

234

qint64 QElapsedTimer::msecsTo(const QElapsedTimer &other) const Q_DECL_NOTHROW

235

{

236

qint64 secs = other.t1 - t1;

237

qint64 fraction = other.t2 - t2;

238

return (secs * Q_INT64_C(1000000000) + fraction) / Q_INT64_C(1000000);

executed 6983 times by 8 tests: return (secs * static_cast<long long>(1000000000LL) + fraction) / static_cast<long long>(1000000LL);

Executed by:

tst_QCompleter
tst_QElapsedTimer
tst_QFileDialog2
tst_QFileSystemModel
tst_QFiledialog
tst_QGraphicsProxyWidget
tst_QPrinter
tst_languageChange

6983

239

}

240

241

qint64 QElapsedTimer::secsTo(const QElapsedTimer &other) const Q_DECL_NOTHROW

242

{

243

return other.t1 - t1;

executed 1 time by 1 test: return other.t1 - t1;

Executed by:

tst_QElapsedTimer

244

}

245

246

bool operator<(const QElapsedTimer &v1, const QElapsedTimer &v2) Q_DECL_NOTHROW

247

{

248

return v1.t1 < v2.t1 || (v1.t1 == v2.t1 && v1.t2 < v2.t2);

executed 2 times by 1 test: return v1.t1 < v2.t1 || (v1.t1 == v2.t1 && v1.t2 < v2.t2);

Executed by:

tst_QElapsedTimer

249

}

250

251

QT_END_NAMESPACE

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