| Commit message (Collapse) | Author | Age | Files | Lines |
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There's no sense in copying a ring buffer. Moving is enough. This
marks an important step on the way to preventing accidental copies of
ring buffer content, because the 'QList buffers' member can now no
longer be implicitly shared. While the compiler will still emit the
code for detach()ing, it will now never be executed.
Pick-to: 6.3
Change-Id: I968bfe3e50c46720ed4baca55c99c1f9c518f653
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Pick-to: 5.15 6.2
Change-Id: I64d63af708bc6ddaabd12450eb3089e5077f849e
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
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For subclasses that implement alternative buffering (such as
QLocalSocket), it would be useful to bypass the QIODevice's internal
buffer, even if the QIODeviceBase::Unbuffered flag is not set when
opened.
By setting the readBufferChunkSize member to 0 in their constructors,
these classes now unconditionally switch the base class to unbuffered
mode, while still reporting buffering with openMode() function.
Change-Id: I351bc57ac0ccb45c81f8c6be15f1745131aa26ba
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
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- avoid calls to private and virtual functions, if the device is not
open;
- avoid repetitive checks in loops;
- add missing checks in readLine() overloads;
- remove check against unsuccessful resize().
Change-Id: I973d5931163b25db1c09c7c3b66f29ea90bb1b29
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
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Suppress error:
src\corelib\io\qiodevice.cpp(791): error C2440:
'<function-style-cast>': cannot convert from 'QIODeviceBase::OpenMode'
to 'quint32'
Pick-to: 6.1 6.2
Change-Id: I6b6e94790942d3af62bc2f38afad97c0b3c80817
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
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QIODevice::readLine() can also return partial lines, which was not
properly documented. Add an autotest for QLocalSocket to illustrate
and test this behavior.
Pick-to: 6.2
Change-Id: Ia2c1c438cc68d2672d34881e11fdf7837232f3b4
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
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As QWindowsPipeWriter now maintains a chunk queue, there is no need to
use the internal QIODevice buffer and wait for the previous operation
to complete.
Change-Id: Id4d54edfe920aeb4a534980cb0cc85a56c067a70
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
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Turn an implicit conversion into a call to QFlags::testAnyFlag.
Change-Id: Idbd80bb6a9b5d84952b76d8d7544f617fe693b91
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Previously, QIODeviceBase was not visible in the documentation
and the links from QIODevice::open() were broken.
Fix by fully qualifying the arguments.
Pick-to: 6.1 6.0
Change-Id: I43960ac2ff436251cc3bfad862d82f937b9bd4b1
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
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- Document QIODeviceBase
- Document QPointerEvent::points
- Fix linking issues
Task-number: QTBUG-90662
Change-Id: Ib123d5708953b22e01f95c82626b39a49fff95b2
Reviewed-by: Nico Vertriest <nico.vertriest@qt.io>
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Selective application of clang-format to follow our coding style where
it is significantly off.
Change-Id: I0ff4ed146fe53922691d5473d0c236f31d478a04
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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If the maxSize argument is 0 (the default), QIODevice::readLine will
allocate a QByteArray with the size of the next chunk of data, which
may be quite large. Before returning, it then resizes the byte array
to the actual size that was read.
But since change 6b884d2aa129, QByteArray::resize() does no
longer shrink the capacity. This means that the returned QByteArray
keeps it's maximum size as allocated memory. This can lead to
excessive memory consumption, especially if the returned QByteArray's
are stored for further processing in the client code.
Fix this by explicitly calling QByteArray::squeeze() before returning.
[ChangeLog][QtCore][QIODevice] Fixes a regression in Qt 5.15 causing
QByteArray's that are returned by QIODevice::readLine() to
consume large amounts of memory.
Fixes: QTBUG-87010
Pick-to: 5.15
Change-Id: I1f95fc4098849e900680fc945238bfeda881022c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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In QTextDocument and QTextFormat, standardize language a bit.
Change-Id: I7c81ecc7a32e36ec32214e6b5386a2827cfcbc3f
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
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As this class is a subject of the library hook data, there must be a
solid understanding of the member's alignment and padding across
different architectures. By reordering the layout, this patch provides
a clearer way of adding new members to the class.
Bump the TypeInformationVersion field in qtHookData, to notify the
Qt Creator developers that the offset of QFilePrivate::fileName was
changed and dumpers should be adapted.
Change-Id: Ied8b69bdeb9da50ff05aba2107bc75509674b18e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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It works as follows:
- user calls write(const QByteArray &);
- this function keeps a pointer to the chunk and calls a regular
write(data, len);
- write(data, len) calls a virtual writeData();
- subclass calls a new QIODevicePrivate::write();
- QIODevicePrivate::write() makes a shallow copy of
the byte array.
Proposed solution is fully compatible with existing subclasses.
By replacing a call to d->writeBuffer.append() with d->write(),
subclasses can improve their performance.
Bump the TypeInformationVersion field in qtHookData, to notify the
Qt Creator developers that the offset of QFilePrivate::fileName was
changed and dumpers should be adapted.
Change-Id: I24713386cc74a9f37e5223c617e4b1ba97f968dc
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
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Move the QIODevice::OpenMode enum into a base class, so that
we can remove the full QIODevice (and thus QObject) dependency
from qdatastream.h and qtextstream.h.
This is required so that we can include QDataStream in qmetatype.h
without getting circular dependencies.
As a nice side effect, QDataStream and QTextStream can now inherit
QIODeviceBase and provide the OpenMode enum directly in their
class scope.
Change-Id: Ifa68b7b1d8d95687ed032f6c9206f92e63bfacdf
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@qt.io>
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Since QRingBuffer is used as a temporary store for data to be written
to a buffered device, we can implement a "zero-copy" strategy between
the user-space code and QIODevice's internal write buffer. As a first
step, we should have an entry point, where we can implement a possible
solution.
Change-Id: I1c658c13accc98c65a802be943688359cc9f9917
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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QIODevice::skip() called a virtual QIODevicePrivate::skip() to
implement an efficient skipping on I/O devices for the internal
subclasses. The user subclasses cannot inherit QIODevicePrivate, so
this functionality was not externally accessible.
This patch replaces QIODevicePrivate::skip() with a virtual protected
QIODevice::skipData(). While the basic implementation simply discards
the data by reading into a dummy buffer, users can reimplement this
function to improve the performance in their subclasses.
[ChangeLog][QtCore][QIODevice] Added virtual protected skipData().
Now, subclasses can implement device-specific skipping of data.
Change-Id: I9522f7f7ab9d03ac06e972a525f8ec2fa909a617
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
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This is required to remove the ; from the macro with Qt 6.
Task-number: QTBUG-82978
Change-Id: I3f0b6717956ca8fa486bed9817b89dfa19f5e0e1
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
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Conflicts:
.qmake.conf
examples/widgets/widgets/imageviewer/imageviewer.cpp
src/corelib/text/qchar.cpp
src/corelib/time/qdatetime.cpp
Change-Id: I9762f5c4ff650799219729d6aee79ac07ce9024a
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Change-Id: I00fcb1c2374e7ca168b6240f9d41c0323fb0867c
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
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Replace some 'is 0' or 'are 0' where 0 referes to a nullptr with 'is
\nullptr' and 'are \nullptr'
Change-Id: Ida9af2971924377efe2f49f435d79e109de2bdf4
Reviewed-by: André Hartmann <aha_1980@gmx.de>
Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>
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Move away from using 0 as pointer literal.
Done using clang-tidy. This is not complete as
run-clang-tidy can't handle all of qtbase in one go.
Change-Id: I1076a21f32aac0dab078af6f175f7508145eece0
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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Cleans up most of corelib to use nullptr or default enums
where appropriate.
Change-Id: Ifcaac14ecdaaee730f87f10941db3ce407d71ef9
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Change-Id: Ie9992f67ca59aff662a4be046ace08640e7c2714
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
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Change-Id: Iaa015046cdcece10c28437da40fcd6cdc9d55eb3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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On Unix, we wouldn't even *try* to truncate if the file was open for
appending. The combination may be an eccentric choice but - at least
when it's combined with reading - I can imagine use-cases for it; and
we should (at least try to) deliver what we're asked for, even if we
can't think why anyone would want it. So actually enable truncation
when asked to.
Amended some tests to check this works and corrected the QIODevice
documentation of mode flags (which misdescribed the special case that
implies Truncate). Removed special-case code, to apply truncate when
writing but not reading, since it's been made redundant by the
pre-processing of mode done in QFSFileEngine::processOpenModeFlags().
[ChangeLog][QtCore][QFile] When opening a file, if Truncate is asked
for, or implied by other flags, it shall be attempted, regardless of
what other options are selected. We previously did this on Windows;
now we do so also on Unix (even when appending).
Task-number: QTBUG-13470
Change-Id: I1e08d02cfbae102725fccbbc3aab5c7bf8830687
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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When QFile::open is called with the NewOnly flag, the call will
fail if the file already exists. As usual, if the file does not exist,
it will be created. Like QTemporaryFile, there is a guarantee from
the operating system that you are not accidentally creating a new file
on top of an older file. When QFile::open is called with the
ExistingOnly flag, the call will fail if the file does not exist. The
ExistingOnly flag only provides new functionality when used with the
WriteOnly flag. For ReadOnly it provides no change in functionality,
as ReadOnly by itself already never creates.
Task-number: QTBUG-52244
Change-Id: I8e3206728f245f95172c225bf297023fb078fc6d
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
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Change-Id: I9a2f18263a8bc0a0de8978792dbb1f285acc0ccd
Reviewed-by: Alex Trotsenko <alex1973tr@gmail.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
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Keeping a description of the last device error is a more informative to
the user than forcing the string to 'Unknown error'.
Change-Id: Ie98fe1c94f24279fb633ce950bbe16450b0efdbd
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
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[ChangeLog][QtCore][QIODevice] Added skip() method to improve
performance in read operations.
Change-Id: I79068a3e9df108756abe37ba3d431e27e7413621
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Compilation and link times in CPU seconds with GCC 7, using precompiled
headers (not including moc, rcc, uic, etc. steps or headersclean):
Before After
Debug -O0 198,1 180,3
Debug -Og 240,7 229,2
Release -O3 267,1 249,2
Release LTO 239,4 229,8
QtCore required a little manual adjusting because some files are
bootstrapped into moc itself and into qmake.
Change-Id: I84e363d735b443cb9beefffd14b8b57c10e7da36
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
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Since 5.7, QIODevice::peek() implementation is based on transaction
mechanism. While technically it's correct, seeking backward on a
buffered random-access device clears the internal buffer that affects
the performance of reading.
To solve the problem, this patch implements peek mode directly inside
the reading procedure.
Task-number: QTBUG-56032
Change-Id: Ic5269f76e44c491a0309e13aba87fa7cf7b9259f
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
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Move device-dependent part of the code into the private function for
further reusing by peek() procedure.
Task-number: QTBUG-56032
Change-Id: Iedceafe4b0bab109ca5c64ad274d779efe87c27b
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
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Conflicts:
mkspecs/features/mac/default_pre.prf
mkspecs/features/qpa/genericunixfontdatabase.prf
mkspecs/features/uikit/default_post.prf
mkspecs/features/uikit/resolve_config.prf
mkspecs/macx-ios-clang/features/default_post.prf
mkspecs/macx-ios-clang/features/resolve_config.prf
src/corelib/io/qiodevice.cpp
Change-Id: I6f210f71f177a3c3278a4f380542195e14e4b491
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It unifies handling of QByteArray's size limit in read(), readLine()
and will be used in a follow-up change which optimizes the performance
of QIODevice::peek() function.
Change-Id: Idb9fbbe14d9632ee267d2a0e47c8a88603c024a2
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Conflicts:
qmake/doc/src/qmake-manual.qdoc
src/corelib/global/qglobal.cpp
src/corelib/tools/qstring.cpp
src/network/socket/qabstractsocket.cpp
src/network/socket/qnativesocketengine_unix.cpp
src/plugins/platforms/eglfs/api/qeglfsglobal.h
Change-Id: Id5dfdbd30fa996f9b4b66a0b030b7d3b8c0ef288
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Conflicts:
src/corelib/global/qglobal.cpp
src/corelib/io/qsettings.cpp
src/corelib/itemmodels/qstringlistmodel.cpp
tests/auto/gui/image/qimagewriter/tst_qimagewriter.cpp
Change-Id: I1c6c306ef42c3c0234b19907914b19da706b4a03
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As of version 10.12 (Sierra), the name of Apple's desktop operating
system will be macOS. Change the occurrences where the Mac platform
is discussed to use a macro \macos, which expands to 'macOS'. This
helps with adapting to future renaming.
Update the instructions on mac-specific Q_OS_* macro usage.
Add a \target for the old 'Qt for OS X' topic to keep links working
for other documentation modules that try to link with the old name.
Change-Id: Id33fb0cd985df702a4ae4efb4c5fd428e77d9b85
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
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Add protocol-specific code and the QSctpServer, QSctpSocket classes.
Change-Id: Ie9a1d87bd1fda866a2405043d1c15c12ded5a96e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Conflicts:
src/corelib/global/qglobal.cpp
src/corelib/global/qsysinfo.h
src/corelib/kernel/qcoreapplication_win.cpp
src/gui/text/qdistancefield.cpp
src/gui/text/qdistancefield_p.h
src/plugins/platforms/windows/qwindowsglcontext.cpp
src/plugins/platforms/windows/qwindowsglcontext.h
Change-Id: Ib3500acc2b28553bde06758cd9a2e19eb7fe2978
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And blacklisted a few tests in tst_QUdpSocket.
Conflicts:
src/android/jar/src/org/qtproject/qt5/android/QtNative.java
src/corelib/global/qglobal.cpp
src/corelib/global/qsystemdetection.h
src/corelib/io/qfileselector.cpp
src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_egldevice/qeglfskmsegldeviceintegration.cpp
tests/auto/network/socket/qudpsocket/BLACKLIST
Task-number: QTBUG-54205
Change-Id: I11dd1c90186eb1b847d45be87a26041f61d89ef6
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This does not seem to be a function that is overloaded.
Change-Id: Icf8942dfb1e78a2ddb38cbd1c49657f745a61989
Reviewed-by: Alex Trotsenko <alex1973tr@gmail.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Program can't continue execution, if QByteArray::resize() fails.
Change-Id: I7138cadada0c1ecdb782daa32ab33b16f22291c6
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@theqtcompany.com>
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Try to prevent the data from being copied, if we have a chunk with the
same size in the read buffer.
Task-number: QTBUG-19169
Change-Id: I2a9a5c88855988888b56d0ca69ec4e50b8e6ef98
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@theqtcompany.com>
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Remove redundant checks.
Change-Id: I766fc08d0d7e48bf7dc2371309f6644c37c3b68b
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
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By default, the read chunk size is QIODEVICE_BUFFERSIZE and the write
chunk size is 0 (which means that we don't use the internal write buffer).
Derived classes may override these values to define the size of
QIODevice's write buffer or to optimize the read buffer use.
Bump the TypeInformationVersion field in qtHookData, to notify the
Qt Creator developers that the offset of QFilePrivate::fileName was
changed and dumpers should be adapted.
Change-Id: Ib732bc94be8da8a5514a6e5dcc04445895f130d8
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@theqtcompany.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
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Some sequential devices allow data to be partitioned into several
channels that have the property of independently sequenced delivery.
Supporting such devices uniformly requires a unified API which provides
the user with a uniform concept of multistreaming.
This patch is based on QProcess's multiplexing model and introduces
the following features:
- ability to get the number of channels;
- multiple internal read/write buffers;
- channel selection functions;
- notification signals on channel activity.
To keep the source code compatible with single-channel implementations,
introduce a private class that references the current read buffer and
hides multistreaming internals from the user.
Bump the TypeInformationVersion field in qtHookData, to notify the
Qt Creator developers that the offset of QFilePrivate::fileName was
changed and dumpers should be adapted.
[ChangeLog][QtCore] Added multistreaming to QIODevice.
Change-Id: Idcaa6a618927c101c4c7284d2a633913be6a6ee2
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@theqtcompany.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
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From Qt 5.7 -> LGPL v2.1 isn't an option anymore, see
http://blog.qt.io/blog/2016/01/13/new-agreement-with-the-kde-free-qt-foundation/
Updated license headers to use new LGPL header instead of LGPL21 one
(in those files which will be under LGPL v3)
Change-Id: I046ec3e47b1876cd7b4b0353a576b352e3a946d9
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
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Introduce a transaction mechanism that gives the ability to read the
data atomically. Current implementation supports transactions for both
types of devices. For sequential devices, it records the whole input
stream during transaction. For random-access devices, device position
is saved when transaction starts. If an error occurs, the application
may be able to recover the input stream by rolling back to the start
point.
Also, QIODevice::peek() was rewritten to make use of transactions
internally. The replacement of QIODevicePrivateLinearBuffer by
QRingBuffer is closely entangled with that, which makes it unfeasible
to do separately.
Bump the TypeInformationVersion field in qtHookData, to notify the
Qt Creator developers that the offset of QFilePrivate::fileName was
changed and dumpers should be adapted.
[ChangeLog][QtCore] Added QIODevice's startTransaction(),
commitTransaction(), rollbackTransaction(), isTransactionStarted()
functions to support the read transactions.
Task-number: QTBUG-44418
Change-Id: I3564b343ebeeaaf7c48a1dcdb7ef0a7ffec550f2
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
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