/home/roberto/qt5_coco/qtsdk/qtbase/src/corelib/thread/qmutex

thread/qmutex_linux.cpp

Switch to Source code

Preprocessed file

Line Source Code Coverage

1 -

2 -

3 -

4 -

5 -

6 -

7 -

8 -

9 -

10 -

11 -

12 static void checkElapsedTimerIsTrivial() -

13 { -

14 static_assert(bool(std::has_trivial_default_constructor< ::QElapsedTimer>::value), "std::has_trivial_default_constructor<QT_PREPEND_NAMESPACE(QElapsedTimer)>::value"); -

}

executed: }

Execution Count:4631415

4631415

16 -

17 static QBasicAtomicInt futexFlagSupport = { (-1) }; -

18 -

19 static int checkFutexPrivateSupport() -

20 { -

21 int value = 0; -

22 -

23 -

24 -

25 static_assert(bool(128 != 0x80000000), "FUTEX_PRIVATE_FLAG != 0x80000000"); -

26 -

27 -

28 -

29 -

30 value = syscall(202, &futexFlagSupport, -

31 1 | 128, -

32 42, 0, 0, 0); -

if (value != -1)

partially evaluated: value != -1

TRUE	FALSE
yes Evaluation Count:74	no Evaluation Count:0

0-74

value = 128;

executed: value = 128;

Execution Count:74

35 else -

value = 0;

never executed: value = 0;

37 -

38 -

39 -

40 -

41 futexFlagSupport.store(value); -

return value;

executed: return value;

Execution Count:73

43 } -

44 -

45 static inline int futexFlags() -

46 { -

47 int value = futexFlagSupport.load(); -

if (__builtin_expect(!!(value != -1), true))

evaluated: __builtin_expect(!!(value != -1), true)

TRUE	FALSE
yes Evaluation Count:14715604	yes Evaluation Count:72

72-14715604

return value;

executed: return value;

Execution Count:14705438

14705438

return checkFutexPrivateSupport();

executed: return checkFutexPrivateSupport();

Execution Count:73

51 } -

52 -

53 static inline int _q_futex(void *addr, int op, int val, const struct timespec *timeout) -

54 { -

55 volatile int *int_addr = reinterpret_cast<volatile int *>(addr); -

56 -

57 -

58 -

59 int *addr2 = 0; -

60 int val2 = 0; -

61 -

62 -

63 -

return syscall(202, int_addr, op | futexFlags(), val, timeout, addr2, val2);

executed: return syscall(202, int_addr, op | futexFlags(), val, timeout, addr2, val2);

Execution Count:14722852

14722852

65 } -

66 -

67 static inline QMutexData *dummyFutexValue() -

68 { -

return reinterpret_cast<QMutexData *>(quintptr(3));

executed: return reinterpret_cast<QMutexData *>(quintptr(3));

Execution Count:18492938

18492938

70 } -

71 -

72 template <bool IsTimed> static inline -

73 bool lockInternal_helper(QBasicAtomicPointer<QMutexData> &d_ptr, int timeout = -1) -

74 { -

if (!IsTimed)

evaluated: !IsTimed

TRUE	FALSE
yes Evaluation Count:4620449	yes Evaluation Count:232452

232452-4620449

timeout = -1;

executed: timeout = -1;

Execution Count:4618076

4618076

77 -

78 -

if (timeout == 0)

evaluated: timeout == 0

TRUE	FALSE
yes Evaluation Count:215910	yes Evaluation Count:4631859

215910-4631859

return false;

executed: return false;

Execution Count:215393

215393

81 -

82 struct timespec ts, *pts = 0; -

83 QElapsedTimer elapsedTimer; -

84 checkElapsedTimerIsTrivial(); -

if (IsTimed && timeout > 0) {

evaluated: IsTimed

TRUE	FALSE
yes Evaluation Count:16831	yes Evaluation Count:4615492

evaluated: timeout > 0

TRUE	FALSE
yes Evaluation Count:16828	yes Evaluation Count:4

4-4615492

86 ts.tv_sec = timeout / 1000; -

87 ts.tv_nsec = (timeout % 1000) * 1000 * 1000; -

88 elapsedTimer.start(); -

}

executed: }

Execution Count:16838

16838

90 -

91 -

while (d_ptr.fetchAndStoreAcquire(dummyFutexValue()) != 0) {

evaluated: d_ptr.fetchAndStoreAcquire(dummyFutexValue()) != 0

TRUE	FALSE
yes Evaluation Count:7011362	yes Evaluation Count:4650469

4650469-7011362

if (IsTimed && pts == &ts) {

evaluated: IsTimed

TRUE	FALSE
yes Evaluation Count:16684	yes Evaluation Count:7000305

evaluated: pts == &ts

TRUE	FALSE
yes Evaluation Count:292	yes Evaluation Count:16389

292-7000305

94 -

95 qint64 xtimeout = qint64(timeout) * 1000 * 1000; -

96 xtimeout -= elapsedTimer.nsecsElapsed(); -

if (xtimeout <= 0) {

evaluated: xtimeout <= 0

TRUE	FALSE
yes Evaluation Count:146	yes Evaluation Count:146

146

98 -

return false;

executed: return false;

Execution Count:146

146

100 } -

101 ts.tv_sec = xtimeout / static_cast<long long>(1000LL) / 1000 / 1000; -

102 ts.tv_nsec = xtimeout % (static_cast<long long>(1000LL) * 1000 * 1000); -

103

}

executed: }

Execution Count:146

146

104

if (IsTimed && timeout > 0)

evaluated: IsTimed

TRUE	FALSE
yes Evaluation Count:16537	yes Evaluation Count:7002417

evaluated: timeout > 0

TRUE	FALSE
yes Evaluation Count:16533	yes Evaluation Count:4

4-7002417

105

pts = &ts;

executed: pts = &ts;

Execution Count:16535

16535

106 -

107 -

108 int r = _q_futex(&d_ptr, 0, quintptr(dummyFutexValue()), pts); -

109

if (IsTimed && r != 0 && (*__errno_location ()) == 110)

evaluated: IsTimed

TRUE	FALSE
yes Evaluation Count:16532	yes Evaluation Count:7003013

evaluated: r != 0

TRUE	FALSE
yes Evaluation Count:8035	yes Evaluation Count:8501

evaluated: (*__errno_location ()) == 110

TRUE	FALSE
yes Evaluation Count:7903	yes Evaluation Count:135

135-7003013

110

return false;

executed: return false;

Execution Count:7898

7898

111 -

112 -

113 -

114 -

115

}

executed: }

Execution Count:7011219

7011219

116 -

117 qt_noop(); -

118

return true;

executed: return true;

Execution Count:4650436

4650436

119 } -

120 -

121 void QBasicMutex::lockInternal() -

122 { -

123 qt_noop(); -

124 lockInternal_helper<false>(d_ptr); -

125

}

executed: }

Execution Count:4641658

4641658

126 -

127 bool QBasicMutex::lockInternal(int timeout) -

128 { -

129 qt_noop(); -

130

return lockInternal_helper<true>(d_ptr, timeout);

executed: return lockInternal_helper<true>(d_ptr, timeout);

Execution Count:236010

236010

131 } -

132 -

133 void QBasicMutex::unlockInternal() -

134 { -

135 QMutexData *d = d_ptr.load(); -

136 qt_noop(); -

137 qt_noop(); -

138 (void)d;; -

139 qt_noop(); -

140 -

141 d_ptr.storeRelease(0); -

142 _q_futex(&d_ptr, 1, 1, 0); -

143

}

executed: }

Execution Count:7868264

7868264

144 -

145 -

146 -

147 -

Switch to Source code

Preprocessed file