qelapsedtimer_unix.cpp

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33-
34#include "qelapsedtimer.h"-
35#if defined(Q_OS_VXWORKS)-
36#include "qfunctions_vxworks.h"-
37#else-
38#include <sys/time.h>-
39#include <time.h>-
40#endif-
41#include <unistd.h>-
42-
43#include <qatomic.h>-
44#include "private/qcore_unix_p.h"-
45-
46#if defined(QT_NO_CLOCK_MONOTONIC) || defined(QT_BOOTSTRAPPED)-
47// turn off the monotonic clock-
48# ifdef _POSIX_MONOTONIC_CLOCK-
49# undef _POSIX_MONOTONIC_CLOCK-
50# endif-
51# define _POSIX_MONOTONIC_CLOCK -1-
52#endif-
53-
54QT_BEGIN_NAMESPACE-
55-
56/*-
57 * Design:-
58 *-
59 * POSIX offers a facility to select the system's monotonic clock when getting-
60 * the current timestamp. Whereas the functions are mandatory in POSIX.1-2008,-
61 * the presence of a monotonic clock is a POSIX Option (see the document-
62 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap02.html#tag_02_01_06 )-
63 *-
64 * The macro _POSIX_MONOTONIC_CLOCK can therefore assume the following values:-
65 * -1 monotonic clock is never supported on this system-
66 * 0 monotonic clock might be supported, runtime check is needed-
67 * >1 (such as 200809L) monotonic clock is always supported-
68 *-
69 * The unixCheckClockType() function will return the clock to use: either-
70 * CLOCK_MONOTONIC or CLOCK_REALTIME. In the case the POSIX option has a value-
71 * of zero, then this function stores a static that contains the clock to be-
72 * used.-
73 *-
74 * There's one extra case, which is when CLOCK_REALTIME isn't defined. When-
75 * that's the case, we'll emulate the clock_gettime function with gettimeofday.-
76 *-
77 * Conforming to:-
78 * POSIX.1b-1993 section "Clocks and Timers"-
79 * included in UNIX98 (Single Unix Specification v2)-
80 * included in POSIX.1-2001-
81 * see http://pubs.opengroup.org/onlinepubs/9699919799/functions/clock_getres.html-
82 */-
83-
84#if !defined(CLOCK_REALTIME)-
85# define CLOCK_REALTIME 0-
86static inline void qt_clock_gettime(int, struct timespec *ts)-
87{-
88 // support clock_gettime with gettimeofday-
89 struct timeval tv;-
90 gettimeofday(&tv, 0);-
91 ts->tv_sec = tv.tv_sec;-
92 ts->tv_nsec = tv.tv_usec * 1000;-
93}-
94-
95# ifdef _POSIX_MONOTONIC_CLOCK-
96# undef _POSIX_MONOTONIC_CLOCK-
97# define _POSIX_MONOTONIC_CLOCK -1-
98# endif-
99#else-
100static inline void qt_clock_gettime(clockid_t clock, struct timespec *ts)-
101{-
102 clock_gettime(clock, ts);-
103}
executed 13337185 times by 700 tests: end of block
Executed by:
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13337185
104#endif-
105-
106static int unixCheckClockType()-
107{-
108#if (_POSIX_MONOTONIC_CLOCK-0 == 0) && defined(_SC_MONOTONIC_CLOCK)-
109 // we need a value we can store in a clockid_t that isn't a valid clock-
110 // check if the valid ones are both non-negative or both non-positive-
111# if CLOCK_MONOTONIC >= 0 && CLOCK_REALTIME >= 0-
112# define IS_VALID_CLOCK(clock) (clock >= 0)-
113# define INVALID_CLOCK -1-
114# elif CLOCK_MONOTONIC <= 0 && CLOCK_REALTIME <= 0-
115# define IS_VALID_CLOCK(clock) (clock <= 0)-
116# define INVALID_CLOCK 1-
117# else-
118# error "Sorry, your system has weird values for CLOCK_MONOTONIC and CLOCK_REALTIME"-
119# endif-
120-
121 static QBasicAtomicInt clockToUse = Q_BASIC_ATOMIC_INITIALIZER(INVALID_CLOCK);-
122 int clock = clockToUse.loadAcquire();-
123 if (Q_LIKELY(IS_VALID_CLOCK(clock)))
__builtin_expe... >= 0)), true)Description
TRUEevaluated 19974900 times by 939 tests
Evaluated by:
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  • tst_Compiler
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  • tst_ModelTest
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  • tst_QAbstractItemModel
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  • tst_QAbstractPrintDialog
  • tst_QAbstractProxyModel
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  • tst_QAbstractSlider
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  • tst_QAbstractSpinBox
  • tst_QAbstractTextDocumentLayout
  • tst_QAccessibility
  • tst_QAction
  • tst_QActionGroup
  • tst_QAlgorithms
  • ...
FALSEevaluated 987 times by 15 tests
Evaluated by:
  • tst_qapplication - unknown status
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987-19974900
124 return clock;
executed 19974900 times by 939 tests: return clock;
Executed by:
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  • tst_LargeFile
  • tst_ModelTest
  • tst_NetworkSelfTest
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  • tst_QAbstractAnimation
  • tst_QAbstractButton
  • tst_QAbstractFileEngine
  • tst_QAbstractItemModel
  • tst_QAbstractItemView
  • tst_QAbstractNetworkCache
  • tst_QAbstractPrintDialog
  • tst_QAbstractProxyModel
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  • ...
19974900
125-
126 // detect if the system supports monotonic timers-
127 clock = sysconf(_SC_MONOTONIC_CLOCK) > 0 ? CLOCK_MONOTONIC : CLOCK_REALTIME;
sysconf(_SC_MO...NIC_CLOCK) > 0Description
TRUEevaluated 987 times by 15 tests
Evaluated by:
  • tst_qapplication - unknown status
  • tst_qdbusabstractadaptor - unknown status
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FALSEnever evaluated
0-987
128 clockToUse.storeRelease(clock);-
129 return clock;
executed 987 times by 15 tests: return clock;
Executed by:
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987
130-
131# undef INVALID_CLOCK-
132# undef IS_VALID_CLOCK-
133#elif (_POSIX_MONOTONIC_CLOCK-0) > 0-
134 return CLOCK_MONOTONIC;-
135#else-
136 return CLOCK_REALTIME;-
137#endif-
138}-
139-
140bool QElapsedTimer::isMonotonic() Q_DECL_NOTHROW-
141{-
142 return clockType() == MonotonicClock;
executed 4383456 times by 699 tests: return clockType() == MonotonicClock;
Executed by:
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  • 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
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  • tst_QAbstractScrollArea
  • tst_QAbstractSlider
  • tst_QAbstractSocket
  • tst_QAbstractSpinBox
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  • tst_QAccessibility
  • tst_QAction
  • tst_QActionGroup
  • tst_QAlgorithms
  • ...
4383456
143}-
144-
145QElapsedTimer::ClockType QElapsedTimer::clockType() Q_DECL_NOTHROW-
146{-
147 return unixCheckClockType() == CLOCK_REALTIME ? SystemTime : MonotonicClock;
executed 6638702 times by 937 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
  • ...
unixCheckClockType() == 0Description
TRUEnever evaluated
FALSEevaluated 6638701 times by 937 tests
Evaluated 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
  • ...
0-6638702
148}-
149-
150static inline void do_gettime(qint64 *sec, qint64 *frac)-
151{-
152 timespec ts;-
153 qt_clock_gettime(unixCheckClockType(), &ts);-
154 *sec = ts.tv_sec;-
155 *frac = ts.tv_nsec;-
156}
executed 13337185 times by 700 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
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  • tst_QAlgorithms
  • ...
13337185
157-
158// used in qcore_unix.cpp and qeventdispatcher_unix.cpp-
159struct timespec qt_gettime() Q_DECL_NOTHROW-
160{-
161 qint64 sec, frac;-
162 do_gettime(&sec, &frac);-
163-
164 timespec tv;-
165 tv.tv_sec = sec;-
166 tv.tv_nsec = frac;-
167-
168 return tv;
executed 7601211 times by 596 tests: return tv;
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_QAbstractSpinBox
  • tst_QAbstractTextDocumentLayout
  • tst_QAccessibility
  • tst_QAction
  • tst_QActionGroup
  • tst_QAlgorithms
  • tst_QApplication
  • ...
7601211
169}-
170-
171void qt_nanosleep(timespec amount)-
172{-
173 // We'd like to use clock_nanosleep.-
174 //-
175 // But clock_nanosleep is from POSIX.1-2001 and both are *not*-
176 // affected by clock changes when using relative sleeps, even for-
177 // CLOCK_REALTIME.-
178 //-
179 // nanosleep is POSIX.1-1993-
180-
181 int r;-
182 EINTR_LOOP(r, nanosleep(&amount, &amount));
executed 326439 times by 11 tests: end of block
Executed by:
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  • tst_QSharedPointer
  • tst_QTcpServer
  • tst_QThread
  • tst_QThreadPool
r == -1Description
TRUEevaluated 1 time by 1 test
Evaluated by:
  • tst_QProcess
FALSEevaluated 326438 times by 11 tests
Evaluated by:
  • tst_QDBusAbstractInterface
  • tst_QFuture
  • tst_QLockFile
  • tst_QMutex
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  • tst_QProgressDialog
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  • tst_QTcpServer
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(*__errno_location ()) == 4Description
TRUEevaluated 1 time by 1 test
Evaluated by:
  • tst_QProcess
FALSEnever evaluated
0-326439
183}
executed 326438 times by 11 tests: end of block
Executed by:
  • tst_QDBusAbstractInterface
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  • tst_QLockFile
  • tst_QMutex
  • tst_QProcess
  • tst_QProgressDialog
  • tst_QReadWriteLock
  • tst_QSharedPointer
  • tst_QTcpServer
  • tst_QThread
  • tst_QThreadPool
326438
184-
185static qint64 elapsedAndRestart(qint64 sec, qint64 frac,-
186 qint64 *nowsec, qint64 *nowfrac)-
187{-
188 do_gettime(nowsec, nowfrac);-
189 sec = *nowsec - sec;-
190 frac = *nowfrac - frac;-
191 return (sec * Q_INT64_C(1000000000) + frac) / Q_INT64_C(1000000);
executed 16369 times by 540 tests: return (sec * static_cast<long long>(1000000000LL) + frac) / static_cast<long long>(1000000LL);
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
  • ...
16369
192}-
193-
194void QElapsedTimer::start() Q_DECL_NOTHROW-
195{-
196 do_gettime(&t1, &t2);-
197}
executed 3153153 times by 552 tests: end of block
Executed by:
  • tst_Collections
  • tst_Compiler
  • tst_Gestures
  • tst_Lancelot
  • tst_LargeFile
  • tst_ModelTest
  • tst_NetworkSelfTest
  • tst_PlatformSocketEngine
  • tst_QAbstractAnimation
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  • tst_QAbstractFileEngine
  • tst_QAbstractItemModel
  • tst_QAbstractItemView
  • tst_QAbstractNetworkCache
  • tst_QAbstractPrintDialog
  • tst_QAbstractProxyModel
  • tst_QAbstractScrollArea
  • tst_QAbstractSlider
  • tst_QAbstractSocket
  • tst_QAbstractSpinBox
  • tst_QAbstractTextDocumentLayout
  • tst_QAccessibility
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  • tst_QAlgorithms
  • ...
3153153
198-
199qint64 QElapsedTimer::restart() Q_DECL_NOTHROW-
200{-
201 return elapsedAndRestart(t1, t2, &t1, &t2);
executed 16369 times by 540 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
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  • tst_QAccessibility
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  • tst_QAlgorithms
  • ...
16369
202}-
203-
204qint64 QElapsedTimer::nsecsElapsed() const Q_DECL_NOTHROW-
205{-
206 qint64 sec, frac;-
207 do_gettime(&sec, &frac);-
208 sec = sec - t1;-
209 frac = frac - t2;-
210 return sec * Q_INT64_C(1000000000) + frac;
executed 2566452 times by 239 tests: return sec * static_cast<long long>(1000000000LL) + frac;
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
  • ...
2566452
211}-
212-
213qint64 QElapsedTimer::elapsed() const Q_DECL_NOTHROW-
214{-
215 return nsecsElapsed() / Q_INT64_C(1000000);
executed 2563781 times by 238 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
  • ...
2563781
216}-
217-
218qint64 QElapsedTimer::msecsSinceReference() const Q_DECL_NOTHROW-
219{-
220 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
221}-
222-
223qint64 QElapsedTimer::msecsTo(const QElapsedTimer &other) const Q_DECL_NOTHROW-
224{-
225 qint64 secs = other.t1 - t1;-
226 qint64 fraction = other.t2 - t2;-
227 return (secs * Q_INT64_C(1000000000) + fraction) / Q_INT64_C(1000000);
executed 6985 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
6985
228}-
229-
230qint64 QElapsedTimer::secsTo(const QElapsedTimer &other) const Q_DECL_NOTHROW-
231{-
232 return other.t1 - t1;
executed 1 time by 1 test: return other.t1 - t1;
Executed by:
  • tst_QElapsedTimer
1
233}-
234-
235bool operator<(const QElapsedTimer &v1, const QElapsedTimer &v2) Q_DECL_NOTHROW-
236{-
237 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
v1.t1 < v2.t1Description
TRUEnever evaluated
FALSEevaluated 2 times by 1 test
Evaluated by:
  • tst_QElapsedTimer
v1.t1 == v2.t1Description
TRUEevaluated 2 times by 1 test
Evaluated by:
  • tst_QElapsedTimer
FALSEnever evaluated
v1.t2 < v2.t2Description
TRUEevaluated 1 time by 1 test
Evaluated by:
  • tst_QElapsedTimer
FALSEevaluated 1 time by 1 test
Evaluated by:
  • tst_QElapsedTimer
0-2
238}-
239-
240QT_END_NAMESPACE-
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