qringbuffer.cpp

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

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1 /**************************************************************************** -

2 ** -

5 ** Contact: http://www.qt.io/licensing/ -

6 ** -

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

8 ** -

9 ** $QT_BEGIN_LICENSE:LGPL21$ -

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 http://www.qt.io/terms-conditions. For further -

16 ** information use the contact form at http://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 2.1 or version 3 as published by the Free -

21 ** Software Foundation and appearing in the file LICENSE.LGPLv21 and -

22 ** LICENSE.LGPLv3 included in the packaging of this file. Please review the -

23 ** following information to ensure the GNU Lesser General Public License -

24 ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and -

25 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -

26 ** -

27 ** As a special exception, The Qt Company gives you certain additional -

28 ** rights. These rights are described in The Qt Company LGPL Exception -

29 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -

30 ** -

31 ** $QT_END_LICENSE$ -

32 ** -

33 ****************************************************************************/ -

34 -

35 #include "private/qringbuffer_p.h" -

36 #include "private/qbytearray_p.h" -

37 #include <string.h> -

38 -

39 QT_BEGIN_NAMESPACE -

40 -

41 /*! -

42 \internal -

43 -

44 Access the bytes at a specified position the out-variable length will -

45 contain the amount of bytes readable from there, e.g. the amount still -

46 the same QByteArray -

47 */ -

48 const char *QRingBuffer::readPointerAtPosition(qint64 pos, qint64 &length) const -

49 { -

if (pos >= 0) {

pos >= 0	Description
TRUE	evaluated 904 times by 2 tests Evaluated by: tst_QNetworkReply tst_QRingBuffer
FALSE	never evaluated

0-904

51 pos += head; -

for (int i = 0; i < buffers.size(); ++i) {

i < buffers.size()	Description
TRUE	evaluated 926 times by 2 tests Evaluated by: tst_QNetworkReply tst_QRingBuffer
FALSE	evaluated 3 times by 1 test Evaluated by: tst_QRingBuffer

3-926

length = (i == tailBuffer ? tail : buffers[i].size());

i == tailBuffer	Description
TRUE	evaluated 182 times by 2 tests Evaluated by: tst_QNetworkReply tst_QRingBuffer
FALSE	evaluated 744 times by 2 tests Evaluated by: tst_QNetworkReply tst_QRingBuffer

182-744

if (length > pos) {

length > pos	Description
TRUE	evaluated 901 times by 2 tests Evaluated by: tst_QNetworkReply tst_QRingBuffer
FALSE	evaluated 25 times by 1 test Evaluated by: tst_QRingBuffer

25-901

55 length -= pos; -

return buffers[i].constData() + pos;

executed 901 times by 2 tests: return buffers[i].constData() + pos;

Executed by:

tst_QNetworkReply
tst_QRingBuffer

901

57 } -

58 pos -= length; -

}

executed 25 times by 1 test: end of block

Executed by:

tst_QRingBuffer

}

executed 3 times by 1 test: end of block

Executed by:

tst_QRingBuffer

61 -

62 length = 0; -

return 0;

executed 3 times by 1 test: return 0;

Executed by:

tst_QRingBuffer

64 } -

65 -

66 void QRingBuffer::free(qint64 bytes) -

67 { -

while (bytes > 0) {

bytes > 0

Description

TRUE

evaluated 49496 times by 73 tests

Evaluated by:

tst_Lancelot
tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QColorDialog
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDataStream
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFileDialog2
tst_QFileInfo
tst_QFileSystemModel
tst_QFileSystemWatcher
tst_QFiledialog
tst_QFont
tst_QFtp
tst_QGraphicsProxyWidget
tst_QGuiEventLoop
tst_QHttpNetworkConnection
tst_QHttpSocketEngine
tst_QIODevice
tst_QImage
tst_QImageReader
tst_QImageWriter
...

FALSE

evaluated 1283 times by 12 tests

Evaluated by:

tst_QHttpSocketEngine
tst_QLocalSocket
tst_QNetworkReply
tst_QProcess
tst_QRingBuffer
tst_QSharedPointer
tst_QSslSocket
tst_QTcpSocket
tst_Selftests
tst_Spdy
tst_qdbuscpp2xml
tst_rcc

1283-49496

69 const qint64 blockSize = buffers.first().size() - head; -

70 -

if (tailBuffer == 0 || blockSize > bytes) {

tailBuffer == 0

Description

TRUE

evaluated 48497 times by 73 tests

Evaluated by:

tst_Lancelot
tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QColorDialog
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDataStream
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFileDialog2
tst_QFileInfo
tst_QFileSystemModel
tst_QFileSystemWatcher
tst_QFiledialog
tst_QFont
tst_QFtp
tst_QGraphicsProxyWidget
tst_QGuiEventLoop
tst_QHttpNetworkConnection
tst_QHttpSocketEngine
tst_QIODevice
tst_QImage
tst_QImageReader
tst_QImageWriter
...

FALSE

evaluated 999 times by 8 tests

Evaluated by:

tst_QLocalSocket
tst_QNetworkReply
tst_QProcess
tst_QRingBuffer
tst_QSharedPointer
tst_Selftests
tst_qdbuscpp2xml
tst_rcc

blockSize > bytes	Description
TRUE	evaluated 527 times by 4 tests Evaluated by: tst_QProcess tst_QRingBuffer tst_QSharedPointer tst_Selftests
FALSE	evaluated 472 times by 8 tests Evaluated by: tst_QLocalSocket tst_QNetworkReply tst_QProcess tst_QRingBuffer tst_QSharedPointer tst_Selftests tst_qdbuscpp2xml tst_rcc

472-48497

72 // keep a single block around if it does not exceed -

73 // the basic block size, to avoid repeated allocations -

74 // between uses of the buffer -

if (bufferSize <= bytes) {

bufferSize <= bytes

Description

TRUE

evaluated 47992 times by 73 tests

Evaluated by:

tst_Lancelot
tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QColorDialog
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDataStream
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFileDialog2
tst_QFileInfo
tst_QFileSystemModel
tst_QFileSystemWatcher
tst_QFiledialog
tst_QFont
tst_QFtp
tst_QGraphicsProxyWidget
tst_QGuiEventLoop
tst_QHttpNetworkConnection
tst_QHttpSocketEngine
tst_QIODevice
tst_QImage
tst_QImageReader
tst_QImageWriter
...

FALSE

evaluated 1032 times by 7 tests

Evaluated by:

tst_QNetworkReply
tst_QProcess
tst_QRingBuffer
tst_QSharedPointer
tst_QSslSocket
tst_QTcpSocket
tst_Selftests

1032-47992

if (buffers.first().size() <= basicBlockSize) {

buffers.first(...basicBlockSize

Description

TRUE

evaluated 47590 times by 73 tests

Evaluated by:

tst_Lancelot
tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QColorDialog
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDataStream
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFileDialog2
tst_QFileInfo
tst_QFileSystemModel
tst_QFileSystemWatcher
tst_QFiledialog
tst_QFont
tst_QFtp
tst_QGraphicsProxyWidget
tst_QGuiEventLoop
tst_QHttpNetworkConnection
tst_QHttpSocketEngine
tst_QIODevice
tst_QImage
tst_QImageReader
tst_QImageWriter
...

FALSE

evaluated 402 times by 8 tests

Evaluated by:

tst_QImageReader
tst_QNetworkReply
tst_QProcess
tst_QSharedPointer
tst_QSslSocket
tst_QTcpSocket
tst_Selftests
tst_Spdy

402-47590

77 bufferSize = 0; -

78 head = tail = 0; -

} else {

executed 47590 times by 73 tests: end of block

Executed by:

tst_Lancelot
tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QColorDialog
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDataStream
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFileDialog2
tst_QFileInfo
tst_QFileSystemModel
tst_QFileSystemWatcher
tst_QFiledialog
tst_QFont
tst_QFtp
tst_QGraphicsProxyWidget
tst_QGuiEventLoop
tst_QHttpNetworkConnection
tst_QHttpSocketEngine
tst_QIODevice
tst_QImage
tst_QImageReader
tst_QImageWriter
...

47590

80 clear(); // try to minify/squeeze us -

}

executed 402 times by 8 tests: end of block

Executed by:

tst_QImageReader
tst_QNetworkReply
tst_QProcess
tst_QSharedPointer
tst_QSslSocket
tst_QTcpSocket
tst_Selftests
tst_Spdy

402

82 } else { -

83 Q_ASSERT(bytes < MaxByteArraySize); -

84 head += int(bytes); -

85 bufferSize -= bytes; -

}

executed 1032 times by 7 tests: end of block

Executed by:

tst_QNetworkReply
tst_QProcess
tst_QRingBuffer
tst_QSharedPointer
tst_QSslSocket
tst_QTcpSocket
tst_Selftests

1032

return;

executed 49024 times by 73 tests: return;

Executed by:

tst_Lancelot
tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QColorDialog
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDataStream
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFileDialog2
tst_QFileInfo
tst_QFileSystemModel
tst_QFileSystemWatcher
tst_QFiledialog
tst_QFont
tst_QFtp
tst_QGraphicsProxyWidget
tst_QGuiEventLoop
tst_QHttpNetworkConnection
tst_QHttpSocketEngine
tst_QIODevice
tst_QImage
tst_QImageReader
tst_QImageWriter
...

49024

88 } -

89 -

90 bufferSize -= blockSize; -

91 bytes -= blockSize; -

92 buffers.removeFirst(); -

93 --tailBuffer; -

94 head = 0; -

}

executed 472 times by 8 tests: end of block

Executed by:

tst_QLocalSocket
tst_QNetworkReply
tst_QProcess
tst_QRingBuffer
tst_QSharedPointer
tst_Selftests
tst_qdbuscpp2xml
tst_rcc

472

}

executed 1283 times by 12 tests: end of block

Executed by:

tst_QHttpSocketEngine
tst_QLocalSocket
tst_QNetworkReply
tst_QProcess
tst_QRingBuffer
tst_QSharedPointer
tst_QSslSocket
tst_QTcpSocket
tst_Selftests
tst_Spdy
tst_qdbuscpp2xml
tst_rcc

1283

97 -

98 char *QRingBuffer::reserve(qint64 bytes) -

99 { -

100

if (bytes <= 0 || bytes >= MaxByteArraySize)

bytes <= 0

Description

TRUE

evaluated 27 times by 8 tests

Evaluated by:

tst_QFile
tst_QHttpSocketEngine
tst_QNetworkReply
tst_QSharedPointer
tst_QTextStream
tst_qdbusxml2cpp
tst_qmakelib
tst_qnetworkreply - unknown status

FALSE

evaluated 202012 times by 83 tests

Evaluated by:

tst_Lancelot
tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QApplication
tst_QColorDialog
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDataStream
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFileDialog2
tst_QFileInfo
tst_QFileSystemModel
tst_QFileSystemWatcher
tst_QFiledialog
tst_QFont
tst_QFtp
tst_QGraphicsProxyWidget
tst_QGuiEventLoop
tst_QHttpNetworkConnection
...

bytes >= MaxByteArraySize

Description

TRUE

never evaluated

FALSE

evaluated 202012 times by 83 tests

Evaluated by:

tst_Lancelot
tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QApplication
tst_QColorDialog
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDataStream
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFileDialog2
tst_QFileInfo
tst_QFileSystemModel
tst_QFileSystemWatcher
tst_QFiledialog
tst_QFont
tst_QFtp
tst_QGraphicsProxyWidget
tst_QGuiEventLoop
tst_QHttpNetworkConnection
...

0-202012

101

return 0;

executed 27 times by 8 tests: return 0;

Executed by:

tst_QFile
tst_QHttpSocketEngine
tst_QNetworkReply
tst_QSharedPointer
tst_QTextStream
tst_qdbusxml2cpp
tst_qmakelib
tst_qnetworkreply - unknown status

102 -

103 const qint64 newSize = bytes + tail; -

104 // if need buffer reallocation -

105

if (newSize > buffers.last().size()) {

newSize > buff....last().size()

Description

TRUE

evaluated 23888 times by 83 tests

Evaluated by:

tst_Lancelot
tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QApplication
tst_QColorDialog
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDataStream
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFileDialog2
tst_QFileInfo
tst_QFileSystemModel
tst_QFileSystemWatcher
tst_QFiledialog
tst_QFont
tst_QFtp
tst_QGraphicsProxyWidget
tst_QGuiEventLoop
tst_QHttpNetworkConnection
...

FALSE

evaluated 178124 times by 65 tests

Evaluated by:

tst_Lancelot
tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QColorDialog
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDataStream
tst_QFile
tst_QFileDialog2
tst_QFileInfo
tst_QFiledialog
tst_QFont
tst_QFtp
tst_QGraphicsProxyWidget
tst_QHttpNetworkConnection
tst_QHttpSocketEngine
tst_QIODevice
tst_QImage
tst_QImageReader
tst_QImageWriter
tst_QLocalSocket
...

23888-178124

106

if (newSize > buffers.last().capacity() && (tail >= basicBlockSize

newSize > buff...t().capacity()

Description

TRUE

evaluated 11033 times by 83 tests

Evaluated by:

tst_Lancelot
tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QApplication
tst_QColorDialog
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDataStream
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFileDialog2
tst_QFileInfo
tst_QFileSystemModel
tst_QFileSystemWatcher
tst_QFiledialog
tst_QFont
tst_QFtp
tst_QGraphicsProxyWidget
tst_QGuiEventLoop
tst_QHttpNetworkConnection
...

FALSE

evaluated 12855 times by 7 tests

Evaluated by:

tst_QNetworkReply
tst_QProcess
tst_QRingBuffer
tst_QSharedPointer
tst_QSslSocket
tst_Selftests
tst_qmake

tail >= basicBlockSize

Description

TRUE

evaluated 661 times by 9 tests

Evaluated by:

tst_QLocalSocket
tst_QNetworkReply
tst_QProcess
tst_QRingBuffer
tst_QSharedPointer
tst_Selftests
tst_qdbuscpp2xml
tst_qmake
tst_rcc

FALSE

evaluated 10372 times by 83 tests

Evaluated by:

tst_Lancelot
tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QApplication
tst_QColorDialog
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDataStream
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFileDialog2
tst_QFileInfo
tst_QFileSystemModel
tst_QFileSystemWatcher
tst_QFiledialog
tst_QFont
tst_QFtp
tst_QGraphicsProxyWidget
tst_QGuiEventLoop
tst_QHttpNetworkConnection
...

661-12855

107

|| newSize >= MaxByteArraySize)) {

newSize >= MaxByteArraySize

Description

TRUE

never evaluated

FALSE

evaluated 10372 times by 83 tests

Evaluated by:

tst_Lancelot
tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QApplication
tst_QColorDialog
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDataStream
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFileDialog2
tst_QFileInfo
tst_QFileSystemModel
tst_QFileSystemWatcher
tst_QFiledialog
tst_QFont
tst_QFtp
tst_QGraphicsProxyWidget
tst_QGuiEventLoop
tst_QHttpNetworkConnection
...

0-10372

108 // shrink this buffer to its current size -

109 buffers.last().resize(tail); -

110 -

111 // create a new QByteArray -

112 buffers.append(QByteArray()); -

113 ++tailBuffer; -

114 tail = 0; -

115

}

executed 661 times by 9 tests: end of block

Executed by:

tst_QLocalSocket
tst_QNetworkReply
tst_QProcess
tst_QRingBuffer
tst_QSharedPointer
tst_Selftests
tst_qdbuscpp2xml
tst_qmake
tst_rcc

661

116 buffers.last().resize(qMax(basicBlockSize, tail + int(bytes))); -

117

}

executed 23888 times by 83 tests: end of block

Executed by:

tst_Lancelot
tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QApplication
tst_QColorDialog
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDataStream
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFileDialog2
tst_QFileInfo
tst_QFileSystemModel
tst_QFileSystemWatcher
tst_QFiledialog
tst_QFont
tst_QFtp
tst_QGraphicsProxyWidget
tst_QGuiEventLoop
tst_QHttpNetworkConnection
...

23888

118 -

119 char *writePtr = buffers.last().data() + tail; -

120 bufferSize += bytes; -

121 Q_ASSERT(bytes < MaxByteArraySize); -

122 tail += int(bytes); -

123

return writePtr;

executed 202012 times by 83 tests: return writePtr;

Executed by:

tst_Lancelot
tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QApplication
tst_QColorDialog
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDataStream
tst_QDir
tst_QEventLoop
tst_QFile
tst_QFileDialog2
tst_QFileInfo
tst_QFileSystemModel
tst_QFileSystemWatcher
tst_QFiledialog
tst_QFont
tst_QFtp
tst_QGraphicsProxyWidget
tst_QGuiEventLoop
tst_QHttpNetworkConnection
...

202012

124 } -

125 -

126 /*! -

127 \internal -

128 -

129 Allocate data at buffer head -

130 */ -

131 char *QRingBuffer::reserveFront(qint64 bytes) -

132 { -

133

if (bytes <= 0 || bytes >= MaxByteArraySize)

bytes <= 0	Description
TRUE	never evaluated
FALSE	evaluated 265 times by 2 tests Evaluated by: tst_QProcess tst_QRingBuffer

bytes >= MaxByteArraySize	Description
TRUE	never evaluated
FALSE	evaluated 265 times by 2 tests Evaluated by: tst_QProcess tst_QRingBuffer

0-265

134

return 0;

never executed: return 0;

135 -

136

if (head < bytes) {

head < bytes	Description
TRUE	evaluated 19 times by 2 tests Evaluated by: tst_QProcess tst_QRingBuffer
FALSE	evaluated 246 times by 1 test Evaluated by: tst_QRingBuffer

19-246

137 buffers.first().remove(0, head); -

138

if (tailBuffer == 0)

tailBuffer == 0	Description
TRUE	evaluated 12 times by 2 tests Evaluated by: tst_QProcess tst_QRingBuffer
FALSE	evaluated 7 times by 1 test Evaluated by: tst_QRingBuffer

7-12

139

tail -= head;

executed 12 times by 2 tests: tail -= head;

Executed by:

tst_QProcess
tst_QRingBuffer

140 -

141 head = qMax(basicBlockSize, int(bytes)); -

142

if (bufferSize == 0) {

bufferSize == 0	Description
TRUE	evaluated 10 times by 2 tests Evaluated by: tst_QProcess tst_QRingBuffer
FALSE	evaluated 9 times by 1 test Evaluated by: tst_QRingBuffer

9-10

143 tail = head; -

144

} else {

executed 10 times by 2 tests: end of block

Executed by:

tst_QProcess
tst_QRingBuffer

145 buffers.prepend(QByteArray()); -

146 ++tailBuffer; -

147

}

executed 9 times by 1 test: end of block

Executed by:

tst_QRingBuffer

148 buffers.first().resize(head); -

149

}

executed 19 times by 2 tests: end of block

Executed by:

tst_QProcess
tst_QRingBuffer

150 -

151 head -= int(bytes); -

152 bufferSize += bytes; -

153

return buffers.first().data() + head;

executed 265 times by 2 tests: return buffers.first().data() + head;

Executed by:

tst_QProcess
tst_QRingBuffer

265

154 } -

155 -

156 void QRingBuffer::chop(qint64 bytes) -

157 { -

158

while (bytes > 0) {

bytes > 0

Description

TRUE

evaluated 3660 times by 30 tests

Evaluated by:

tst_Lancelot
tst_QApplication
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDir
tst_QFont
tst_QMimeDatabase
tst_QNetworkReply
tst_QNetworkSession
tst_QObject
tst_QProcess
tst_QProcess_and_GuiEventLoop
tst_QRingBuffer
tst_QSharedMemory
tst_QSharedPointer
tst_QSystemSemaphore
tst_QUuid
tst_Selftests
tst_qdbuscpp2xml
tst_qdbusxml2cpp
tst_qmake
...

FALSE

evaluated 34687 times by 25 tests

Evaluated by:

tst_Lancelot
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QFont
tst_QMimeDatabase
tst_QNetworkReply
tst_QNetworkSession
tst_QObject
tst_QProcess
tst_QProcess_and_GuiEventLoop
tst_QSharedPointer
tst_QUuid
tst_Selftests
tst_qdbuscpp2xml
tst_qdbusxml2cpp
tst_qmake
tst_qmakelib
tst_qmessagehandler
tst_qprocess - unknown status
tst_rcc
tst_uic

3660-34687

159

if (tailBuffer == 0 || tail > bytes) {

tailBuffer == 0

Description

TRUE

evaluated 3574 times by 30 tests

Evaluated by:

tst_Lancelot
tst_QApplication
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDir
tst_QFont
tst_QMimeDatabase
tst_QNetworkReply
tst_QNetworkSession
tst_QObject
tst_QProcess
tst_QProcess_and_GuiEventLoop
tst_QRingBuffer
tst_QSharedMemory
tst_QSharedPointer
tst_QSystemSemaphore
tst_QUuid
tst_Selftests
tst_qdbuscpp2xml
tst_qdbusxml2cpp
tst_qmake
...

FALSE

evaluated 86 times by 6 tests

Evaluated by:

tst_QProcess
tst_QSharedPointer
tst_Selftests
tst_qdbuscpp2xml
tst_qmake
tst_rcc

tail > bytes	Description
TRUE	evaluated 79 times by 6 tests Evaluated by: tst_QProcess tst_QSharedPointer tst_Selftests tst_qdbuscpp2xml tst_qmake tst_rcc
FALSE	evaluated 7 times by 2 tests Evaluated by: tst_QProcess tst_Selftests

7-3574

160 // keep a single block around if it does not exceed -

161 // the basic block size, to avoid repeated allocations -

162 // between uses of the buffer -

163

if (bufferSize <= bytes) {

bufferSize <= bytes

Description

TRUE

evaluated 2635 times by 30 tests

Evaluated by:

tst_Lancelot
tst_QApplication
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDir
tst_QFont
tst_QMimeDatabase
tst_QNetworkReply
tst_QNetworkSession
tst_QObject
tst_QProcess
tst_QProcess_and_GuiEventLoop
tst_QRingBuffer
tst_QSharedMemory
tst_QSharedPointer
tst_QSystemSemaphore
tst_QUuid
tst_Selftests
tst_qdbuscpp2xml
tst_qdbusxml2cpp
tst_qmake
...

FALSE

evaluated 1018 times by 24 tests

Evaluated by:

tst_Lancelot
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusInterface
tst_QDBusMarshall
tst_QFont
tst_QMimeDatabase
tst_QNetworkReply
tst_QNetworkSession
tst_QObject
tst_QProcess
tst_QProcess_and_GuiEventLoop
tst_QRingBuffer
tst_QSharedPointer
tst_QUuid
tst_Selftests
tst_qdbuscpp2xml
tst_qdbusxml2cpp
tst_qmake
tst_qmakelib
tst_qmessagehandler
tst_qprocess - unknown status
tst_rcc
tst_uic

1018-2635

164

if (buffers.first().size() <= basicBlockSize) {

buffers.first(...basicBlockSize

Description

TRUE

evaluated 2634 times by 29 tests

Evaluated by:

tst_Lancelot
tst_QApplication
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDir
tst_QFont
tst_QMimeDatabase
tst_QNetworkReply
tst_QNetworkSession
tst_QObject
tst_QProcess
tst_QProcess_and_GuiEventLoop
tst_QSharedMemory
tst_QSharedPointer
tst_QSystemSemaphore
tst_QUuid
tst_Selftests
tst_qdbuscpp2xml
tst_qdbusxml2cpp
tst_qmake
tst_qmakelib
...

FALSE

evaluated 1 time by 1 test

Evaluated by:

tst_QRingBuffer

1-2634

165 bufferSize = 0; -

166 head = tail = 0; -

167

} else {

executed 2634 times by 29 tests: end of block

Executed by:

tst_Lancelot
tst_QApplication
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDir
tst_QFont
tst_QMimeDatabase
tst_QNetworkReply
tst_QNetworkSession
tst_QObject
tst_QProcess
tst_QProcess_and_GuiEventLoop
tst_QSharedMemory
tst_QSharedPointer
tst_QSystemSemaphore
tst_QUuid
tst_Selftests
tst_qdbuscpp2xml
tst_qdbusxml2cpp
tst_qmake
tst_qmakelib
...

2634

168 clear(); // try to minify/squeeze us -

169

}

executed 1 time by 1 test: end of block

Executed by:

tst_QRingBuffer

170 } else { -

171 Q_ASSERT(bytes < MaxByteArraySize); -

172 tail -= int(bytes); -

173 bufferSize -= bytes; -

174

}

executed 1018 times by 24 tests: end of block

Executed by:

tst_Lancelot
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusInterface
tst_QDBusMarshall
tst_QFont
tst_QMimeDatabase
tst_QNetworkReply
tst_QNetworkSession
tst_QObject
tst_QProcess
tst_QProcess_and_GuiEventLoop
tst_QRingBuffer
tst_QSharedPointer
tst_QUuid
tst_Selftests
tst_qdbuscpp2xml
tst_qdbusxml2cpp
tst_qmake
tst_qmakelib
tst_qmessagehandler
tst_qprocess - unknown status
tst_rcc
tst_uic

1018

175

return;

executed 3653 times by 30 tests: return;

Executed by:

tst_Lancelot
tst_QApplication
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QDir
tst_QFont
tst_QMimeDatabase
tst_QNetworkReply
tst_QNetworkSession
tst_QObject
tst_QProcess
tst_QProcess_and_GuiEventLoop
tst_QRingBuffer
tst_QSharedMemory
tst_QSharedPointer
tst_QSystemSemaphore
tst_QUuid
tst_Selftests
tst_qdbuscpp2xml
tst_qdbusxml2cpp
tst_qmake
...

3653

176 } -

177 -

178 bufferSize -= tail; -

179 bytes -= tail; -

180 buffers.removeLast(); -

181 --tailBuffer; -

182 tail = buffers.last().size(); -

183

}

executed 7 times by 2 tests: end of block

Executed by:

tst_QProcess
tst_Selftests

184

}

executed 34687 times by 25 tests: end of block

Executed by:

tst_Lancelot
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
tst_QDBusConnection
tst_QDBusConnection_SpyHook
tst_QDBusInterface
tst_QDBusMarshall
tst_QFont
tst_QMimeDatabase
tst_QNetworkReply
tst_QNetworkSession
tst_QObject
tst_QProcess
tst_QProcess_and_GuiEventLoop
tst_QSharedPointer
tst_QUuid
tst_Selftests
tst_qdbuscpp2xml
tst_qdbusxml2cpp
tst_qmake
tst_qmakelib
tst_qmessagehandler
tst_qprocess - unknown status
tst_rcc
tst_uic

34687

185 -

186 void QRingBuffer::clear() -

187 { -

188 buffers.erase(buffers.begin() + 1, buffers.end()); -

189 buffers.first().clear(); -

190 -

191 head = tail = 0; -

192 tailBuffer = 0; -

193 bufferSize = 0; -

194

}

executed 72606 times by 210 tests: end of block

Executed by:

tst_Lancelot
tst_LargeFile
tst_NetworkSelfTest
tst_QAbstractFileEngine
tst_QAbstractItemView
tst_QAbstractNetworkCache
tst_QAbstractPrintDialog
tst_QAbstractScrollArea
tst_QAccessibility
tst_QApplication
tst_QBrush
tst_QButtonGroup
tst_QByteArray
tst_QCalendarWidget
tst_QChar
tst_QColorDialog
tst_QColumnView
tst_QComboBox
tst_QCommandLineParser
tst_QCommandLinkButton
tst_QCompleter
tst_QCryptographicHash
tst_QCssParser
tst_QDBusAbstractAdaptor
tst_QDBusAbstractInterface
...

72606

195 -

196 qint64 QRingBuffer::indexOf(char c, qint64 maxLength) const -

197 { -

198 qint64 index = 0; -

199 qint64 j = head; -

200

for (int i = 0; index < maxLength && i < buffers.size(); ++i) {

index < maxLength	Description
TRUE	evaluated 6467 times by 1 test Evaluated by: tst_QRingBuffer
FALSE	evaluated 256 times by 2 tests Evaluated by: tst_QProcess tst_QRingBuffer

i < buffers.size()	Description
TRUE	evaluated 6467 times by 1 test Evaluated by: tst_QRingBuffer
FALSE	never evaluated

0-6467

201 const char *ptr = buffers[i].constData() + j; -

202 j = qMin(index + (i == tailBuffer ? tail : buffers[i].size()) - j, maxLength); -

203 -

204

while (index < j) {

index < j	Description
TRUE	evaluated 97702 times by 1 test Evaluated by: tst_QRingBuffer
FALSE	evaluated 5954 times by 1 test Evaluated by: tst_QRingBuffer

5954-97702

205

if (*ptr++ == c)

*ptr++ == c	Description
TRUE	evaluated 513 times by 1 test Evaluated by: tst_QRingBuffer
FALSE	evaluated 97189 times by 1 test Evaluated by: tst_QRingBuffer

513-97189

206

return index;

executed 513 times by 1 test: return index;

Executed by:

tst_QRingBuffer

513

207 ++index; -

208

}

executed 97189 times by 1 test: end of block

Executed by:

tst_QRingBuffer

97189

209 j = 0; -

210

}

executed 5954 times by 1 test: end of block

Executed by:

tst_QRingBuffer

5954

211

return -1;

executed 256 times by 2 tests: return -1;

Executed by:

tst_QProcess
tst_QRingBuffer

256

212 } -

213 -

214 qint64 QRingBuffer::read(char *data, qint64 maxLength) -

215 { -

216 const qint64 bytesToRead = qMin(size(), maxLength); -

217 qint64 readSoFar = 0; -

218

while (readSoFar < bytesToRead) {

readSoFar < bytesToRead	Description
TRUE	evaluated 513 times by 1 test Evaluated by: tst_QRingBuffer
FALSE	evaluated 513 times by 1 test Evaluated by: tst_QRingBuffer

513

219 const qint64 bytesToReadFromThisBlock = qMin(bytesToRead - readSoFar, -

220 nextDataBlockSize()); -

221

if (data)

data	Description
TRUE	evaluated 513 times by 1 test Evaluated by: tst_QRingBuffer
FALSE	never evaluated

0-513

222

memcpy(data + readSoFar, readPointer(), bytesToReadFromThisBlock);

executed 513 times by 1 test: memcpy(data + readSoFar, readPointer(), bytesToReadFromThisBlock);

Executed by:

tst_QRingBuffer

513

223 readSoFar += bytesToReadFromThisBlock; -

224 free(bytesToReadFromThisBlock); -

225

}

executed 513 times by 1 test: end of block

Executed by:

tst_QRingBuffer

513

226

return readSoFar;

Executed by:

tst_QRingBuffer

513

227 } -

228 -

229 /*! -

230 \internal -

231 -

232 Read an unspecified amount (will read the first buffer) -

233 */ -

234 QByteArray QRingBuffer::read() -

235 { -

236

if (bufferSize == 0)

bufferSize == 0	Description
TRUE	never evaluated
FALSE	evaluated 3 times by 1 test Evaluated by: tst_QRingBuffer

0-3

237

return QByteArray();

never executed: return QByteArray();

238 -

239 QByteArray qba(buffers.takeFirst()); -

240 -

241 qba.reserve(0); // avoid that resizing needlessly reallocates -

242

if (tailBuffer == 0) {

tailBuffer == 0	Description
TRUE	evaluated 1 time by 1 test Evaluated by: tst_QRingBuffer
FALSE	evaluated 2 times by 1 test Evaluated by: tst_QRingBuffer

1-2

243 qba.resize(tail); -

244 tail = 0; -

245 buffers.append(QByteArray()); -

246

} else {

executed 1 time by 1 test: end of block

Executed by:

tst_QRingBuffer

247 --tailBuffer; -

248

}

executed 2 times by 1 test: end of block

Executed by:

tst_QRingBuffer

249 qba.remove(0, head); // does nothing if head is 0 -

250 head = 0; -

251 bufferSize -= qba.size(); -

252

return qba;

executed 3 times by 1 test: return qba;

Executed by:

tst_QRingBuffer

253 } -

254 -

255 /*! -

256 \internal -

257 -

258 Peek the bytes from a specified position -

259 */ -

260 qint64 QRingBuffer::peek(char *data, qint64 maxLength, qint64 pos) const -

261 { -

262 qint64 readSoFar = 0; -

263 -

264

if (pos >= 0) {

pos >= 0	Description
TRUE	evaluated 255 times by 1 test Evaluated by: tst_QRingBuffer
FALSE	never evaluated

0-255

265 pos += head; -

266

for (int i = 0; readSoFar < maxLength && i < buffers.size(); ++i) {

readSoFar < maxLength	Description
TRUE	evaluated 809 times by 1 test Evaluated by: tst_QRingBuffer
FALSE	evaluated 255 times by 1 test Evaluated by: tst_QRingBuffer

i < buffers.size()	Description
TRUE	evaluated 809 times by 1 test Evaluated by: tst_QRingBuffer
FALSE	never evaluated

0-809

267

qint64 blockLength = (i == tailBuffer ? tail : buffers[i].size());

i == tailBuffer	Description
TRUE	evaluated 23 times by 1 test Evaluated by: tst_QRingBuffer
FALSE	evaluated 786 times by 1 test Evaluated by: tst_QRingBuffer

23-786

268 -

269

if (pos < blockLength) {

pos < blockLength	Description
TRUE	evaluated 259 times by 1 test Evaluated by: tst_QRingBuffer
FALSE	evaluated 550 times by 1 test Evaluated by: tst_QRingBuffer

259-550

270 blockLength = qMin(blockLength - pos, maxLength - readSoFar); -

271 memcpy(data + readSoFar, buffers[i].constData() + pos, blockLength); -

272 readSoFar += blockLength; -

273 pos = 0; -

274

} else {

executed 259 times by 1 test: end of block

Executed by:

tst_QRingBuffer

259

275 pos -= blockLength; -

276

}

executed 550 times by 1 test: end of block

Executed by:

tst_QRingBuffer

550

277 } -

278

}

executed 255 times by 1 test: end of block

Executed by:

tst_QRingBuffer

255

279 -

280

return readSoFar;

Executed by:

tst_QRingBuffer

255

281 } -

282 -

283 /*! -

284 \internal -

285 -

286 Append a new buffer to the end -

287 */ -

288 void QRingBuffer::append(const QByteArray &qba) -

289 { -

290

if (tail == 0) {

tail == 0	Description
TRUE	evaluated 44 times by 2 tests Evaluated by: tst_QNetworkReply tst_QRingBuffer
FALSE	evaluated 42 times by 2 tests Evaluated by: tst_QNetworkReply tst_QRingBuffer

42-44

291 buffers.last() = qba; -

292

} else {

executed 44 times by 2 tests: end of block

Executed by:

tst_QNetworkReply
tst_QRingBuffer

293 buffers.last().resize(tail); -

294 buffers.append(qba); -

295 ++tailBuffer; -

296

}

executed 42 times by 2 tests: end of block

Executed by:

tst_QNetworkReply
tst_QRingBuffer

297 tail = qba.size(); -

298 bufferSize += tail; -

299

}

executed 86 times by 2 tests: end of block

Executed by:

tst_QNetworkReply
tst_QRingBuffer

300 -

301 qint64 QRingBuffer::readLine(char *data, qint64 maxLength) -

302 { -

303

if (!data || --maxLength <= 0)

!data	Description
TRUE	never evaluated
FALSE	evaluated 3 times by 1 test Evaluated by: tst_QRingBuffer

--maxLength <= 0	Description
TRUE	never evaluated
FALSE	evaluated 3 times by 1 test Evaluated by: tst_QRingBuffer

0-3

304

return -1;

never executed: return -1;

305 -

306 qint64 i = indexOf('\n', maxLength); -

307 i = read(data, i >= 0 ? (i + 1) : maxLength); -

308 -

309 // Terminate it. -

310 data[i] = '\0'; -

311

return i;

executed 3 times by 1 test: return i;

Executed by:

tst_QRingBuffer

312 } -

313 -

314 QT_END_NAMESPACE -

Source code

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