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* QDateTimePrivate: inherit QSharedData and other cleanupsMarc Mutz2019-08-071-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't manage the ref-count yourself, as this requires the code to use the QAtomic copy ctor, which we want to remove going forward. Using QSharedData, we can let the compiler write the code for us. Since 'ref' this way moves to the first spot in the list of effective members, creating a 4B hole between itself and 'msecs', swap 'status' and 'msecs' to fill the hole: offset: 0 8 16 24 | | | | without v v v v adj.mnt: |*R*| | msecs | S | U | TZ.... before: | msecs | S | U |*R*| | TZ... after: |*R*| S | msecs | U | | TZ.... This keeps the padding out of the critical first word, which improves latency. That said, for accessing the members the old layout surely was optimal. This layout optimizes copies and pessimizes access to 'msecs' on 32-bit platforms without the Critical Word First optimization. Requires adjustments to tst_toolsupport and the qhooks version. Also default members using NSDMI, consequently drop the manual default ctor. Change-Id: I3c48e68694ad29b28a13aa47ea0f283fae52edd7 Reviewed-by: Edward Welbourne <edward.welbourne@qt.io> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Move all connection related data into one data structureLars Knoll2019-02-081-2/+2
| | | | | | | | | | | Adn create that data structure on demand on the heap. This reduces the size of QObjectPrivate if there are no connections. If we have connections, it'll use the same amount of allocations and memory as before. Change-Id: I900f6980a2cd8a5f72c3ad18697b5dd49100217d Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
* Get rid of the connectedSignals bitflagsLars Knoll2019-02-081-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | Measurements show that it's just almost as fast to simply query the connectionlist directly and avoid both the memory overhead of the bitfield and the associated bookkeeping. For connected signals, the difference is not relevant at all. With a signal that was never connected, removing the bitfield will cause signal emission to be ~2.5% faster. And if you ever disconnect from a signal, the bitfields might not be accurate and this can cause a major slowdown. Here are some numbers to validate this. All times are measured in ms for 100M signal emissions: without change with change string based connect: 3817 3836 pointer based connect: 4552 4571 not connected: 493 479 disconnected: 2113 559 Change-Id: Ia2c85036afaa7f991b883c8ff812f69cf4580f7e Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com> Reviewed-by: hjk <hjk@qt.io>
* Fix license header for tst_toolingsupport.cppKai Koehne2018-04-091-13/+12
| | | | | | Change-Id: Id355afc8eb57a40a0f8d06fa2920f03d94ef9337 Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io> Reviewed-by: hjk <hjk@qt.io>
* Fix tst_toolsupport on 32-bit arm platformSami Nurmenniemi2017-04-121-0/+6
| | | | | | | | | | | | | On 32-bit arm platform, qint64 gets aligned differently than on 32-bit x86. First difference between the platforms on QFilePrivate member offset happens in QFileDevicePrivate::cachedSize: - On 32-bit x86 it's offset is 148 (4-aligned) - On 32-bit arm it's offset is 152 (8-aligned) and offsets of all the remaining members are +4 compared to x86 - On 64-bit architectures the offsets are the same Change-Id: If110da27ea08504e78b167c0a21599420eaa9630 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* QDateTimePrivate: merge the time spec, DST status and validity flagsThiago Macieira2016-06-101-18/+3
| | | | | | | | | | | | Storing them in a single byte is the first step towards the Short QDateTime Optimization. The bump in the "private version" by 10 is to accommodate possible changes in the Qt 5.7 branch. Change-Id: Id5480807d25e49e78b79ffff144a59420457bcf0 Reviewed-by: Edward Welbourne <edward.welbourne@qt.io> Reviewed-by: Lars Knoll <lars.knoll@qt.io>
* Adapt QFileDevice to use QIODevice's write bufferAlex Trotsenko2016-01-291-1/+1
| | | | | | | | | Also, 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: I71bc5f509b733c0ab3430cd47ff08961f0388839 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
* QIODevice: make the read/write chunk sizes configurableAlex Trotsenko2016-01-271-1/+1
| | | | | | | | | | | | | | | 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>
* QIODevice: add infrastructure for multistreamingAlex Trotsenko2016-01-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* QIODevice: handle incomplete readsAlex Trotsenko2016-01-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* Merge remote-tracking branch 'origin/5.6' into devFrederik Gladhorn2016-01-081-1/+1
|\ | | | | | | | | | | Based on merge done by Liang Qi Change-Id: Id566e5b9f284d29bff2199f13f9417c660f5b26f
| * Enable a test for QFilePrivate::fileName offset on 32 bit LinuxAlex Trotsenko2015-12-231-1/+1
| | | | | | | | | | Change-Id: I3577ff7126263ddbe4b7714095480e6f1da7b661 Reviewed-by: hjk <hjk@theqtcompany.com>
* | Merge remote-tracking branch 'origin/5.6' into devLiang Qi2015-12-181-1/+1
|\| | | | | | | | | | | | | | | | | | | | | | | Conflicts: src/gui/painting/painting.pri src/plugins/platforms/xcb/qxcbconnection.cpp tests/auto/corelib/thread/qthreadstorage/qthreadstorage.pro tests/auto/corelib/tools/qlocale/test/test.pro tests/auto/gui/kernel/qwindow/tst_qwindow.cpp tools/configure/environment.cpp Change-Id: I9c40f458b89b2c206de2d2c24e90b5f679c93495
| * Complete a test for QFilePrivate::fileName offset on Linuxhjk2015-12-151-1/+1
| | | | | | | | | | | | | | | | This extends the test suite introduced in 497f0af1f7 for a known-to-be-good case also for 32 bit systems. Change-Id: Ia231bcb9b0102c28483d932be18767662b7a6afd Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>
* | Tests: Remove CONFIG += parallel_test.Friedemann Kleint2015-09-051-1/+1
| | | | | | | | | | | | | | The keyword no longer has a meaning for the new CI. Change-Id: Ibcea4c7a82fb7f982cf4569fdff19f82066543d1 Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
* | Add a qtHookData field for Qt Creator's data displayhjk2015-09-031-0/+10
|/ | | | | | | | | | | | | | | Qt Creator needs to be able to determine structure sizes and data member offsets for certain private types even in the absence of debug information. It is sufficient to keep and test the actual data sets on the Qt Creator side, as long library provides a hint which data set is needed. So far, HookDataVersion was meant to be used for that purpose. To make it more explicit, this patch introduce a TypeInformationVersion field in qtHookData. Change-Id: Ia1c3c6f62f314d63c4df289ef456f047c5e84cf4 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Update copyright headersJani Heikkinen2015-02-111-8/+8
| | | | | | | | | | | | | | | | | | Qt copyrights are now in The Qt Company, so we could update the source code headers accordingly. In the same go we should also fix the links to point to qt.io. Outdated header.LGPL removed (use header.LGPL21 instead) Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing combination. New header.LGPL-COMM taken in the use file which were using old header.LGPL3 (src/plugins/platforms/android/extract.cpp) Added new header.LGPL3 containing Commercial + LGPLv3 + GPLv2 license combination Change-Id: I6f49b819a8a20cc4f88b794a8f6726d975e8ffbe Reviewed-by: Matti Paaso <matti.paaso@theqtcompany.com>
* QIODevice: remove ineffective caching membersAlex Trotsenko2015-01-201-1/+1
| | | | | | | | | | Most of the QIODevice functions already have a locally cached "sequential" flag. Make the rest of them follow this strategy. This eliminates the need to use private caching members. Change-Id: I0edb2c9b7c5f411c5bee25c425e7b40e3c9021d3 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> Reviewed-by: hjk <hjk@theqtcompany.com>
* Add a test for QFilePrivate::fileName offset on Linuxhjk2014-10-251-0/+8
| | | | | | | | This extends the test suite introduced in 497f0af1f7 for a known-to-be-good case. Change-Id: Ib574ecfdb8e9d91985d6df8c092896581d1d06ff Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
* Add some tools specific consistency testshjk2014-10-242-0/+149
This upstreams parts of Qt Creator's tst_offset test to serve as an early warning system by testing private implementation details that are used in Qt Creator's data structure "pretty printing" facility. While the tested implementation details can be changed without breaking binary or source compatibility, downstream tools like Qt Creator depend on them. If this test breaks, you are kindly asked to coordinate with the downstream stakeholders to avoid tool breakage. Change-Id: I1286efcec9bef105f80c2163a4f66f5c43f3a218 Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
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