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* Update copyright headersJani Heikkinen2015-02-111-7/+7
| | | | | | | | | | | | | | | | | | 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 Outdated header.LGPL removed (use header.LGPL21 instead) Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing combination.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>
* Update license headers and add new license filesMatti Paaso2014-09-241-19/+11
| | | | | | | | | - Renamed LICENSE.LGPL to LICENSE.LGPLv21 - Added LICENSE.LGPLv3 - Removed LICENSE.GPL Change-Id: Iec3406e3eb3f133be549092015cefe33d259a3f2 Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>
* Fix compilation on armv5Eskil Abrahamsen Blomfeldt2014-02-241-0/+14
| | | | | | | | | | | | | | | | | Two changes broke compilation on armv5, where we're currently not CI-testing: 634f82f1f1fda7983abf70b58e43c580b1f01df0 changed the signature in a function definition without changing its declaration, while it was actually intending to add this as a new overload. bfe0db6fbea6376dbe395af6d76995a54bbc3b49 added an #error condition without fixing compilation on armv5. I don't know if the fix is correct, but at least it compiles. Task-number: QTBUG-37034 Change-Id: If99142fafb9bd55afc20b17f8b3cce5ee0ffec13 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Add a testAndSet overload to the atomics that returns the current valueThiago Macieira2014-02-161-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is extremely useful, since the most common action after a failed compare-and-swap is to loop around, trying again with the current value as found in memory. Code currently written as: do { Type value = atomic.load(); ... } while (!atomic.testAndSetRelaxed(value, desired)); Becomes: Type value = atomic.load(); do { ... } while (!atomic.testAndSetRelaxed(value, desired, value)); In most CPU architectures, the value that was found in memory is known to the compare-and-swap code, so this is more efficient than the previous code. In architectures where the value is not known, the new code is no worse than before. The implementation sometimes modified an existing function, sometimes it added a new one, depending on whether more registers were needed in the assembly (like ARMv6-7), the code became more complex (ARMv5), the optimizer failed (C++11), or it was just plain equivalent (MIPS). Change-Id: I7d6d200ea9746ec8978a0c1e1969dbc3580b9285 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com> Reviewed-by: Lars Knoll <lars.knoll@digia.com> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Centralize support for QBasicAtomic for ints and longsThiago Macieira2014-01-301-3/+0
| | | | | | | No need to redefine everywhere, since they're required to be supported. Change-Id: I2bdbbd0b0c44871e3bd0edcf0289fc58dd50ff31 Reviewed-by: Lars Knoll <lars.knoll@digia.com>
* Remove use of 'register' from Qt.Stephen Kelly2013-06-171-8/+8
| | | | | | | | | | It is deprecated and clang is starting to warn about it. Patch mostly generated by clang itself, with some careful grep and sed for the platform-specific parts. Change-Id: I8058e6db0f1b41b33a9e8f17a712739159982450 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Mark all qtbase headers that aren't cleanThiago Macieira2013-03-031-0/+1
| | | | | | | | | | | | | | | | QtCore has a few headers that, though public, aren't meant to be included directly. Those are the atomic headers, the three _impl.h headers and qt_windows.h. QtGui includes two OpenGL headers that don't compile on their own. Other libraries should not have headers like that (but they do, something we need to fix eventually). Change-Id: I55e4eb057748f47df927ee618f9409acbc189cc1 Reviewed-by: Sean Harmer <sean.harmer@kdab.com> Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Fix thumb armv5 atomicsBogDan Vatra2013-02-271-0/+8
| | | | | | Change-Id: Ie9f98e5f5a08908d9d99e04bdc95fd506cc4a51e Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>
* Remove QT_{BEGIN,END}_HEADER macro usageSergio Ahumada2013-01-291-6/+0
| | | | | | | | | | | The macro was made empty in ba3dc5f3b56d1fab6fe37fe7ae08096d7dc68bcb and is no longer necessary or used. Discussed-on: http://lists.qt-project.org/pipermail/development/2013-January/009284.html Change-Id: Id2bb2e2cabde059305d4af5f12593344ba30f001 Reviewed-by: Laszlo Papp <lpapp@kde.org> Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com> Reviewed-by: hjk <hjk121@nokiamail.com>
* Update copyright year in Digia's license headersSergio Ahumada2013-01-181-1/+1
| | | | | Change-Id: Ic804938fc352291d011800d21e549c10acac66fb Reviewed-by: Lars Knoll <lars.knoll@digia.com>
* Change copyrights from Nokia to DigiaIikka Eklund2012-09-221-24/+24
| | | | | | | | Change copyrights and license headers from Nokia to Digia Change-Id: If1cc974286d29fd01ec6c19dd4719a67f4c3f00e Reviewed-by: Lars Knoll <lars.knoll@digia.com> Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
* Add Q_DECL_CONSTEXPR to the isXXX functions in the new atomics.Thiago Macieira2012-08-181-2/+2
| | | | | | | | | This allows one to write code that depends on these values at compile-time. Change-Id: I7d78524ed9c70d4141360496d1d764dcbfa92e62 Reviewed-by: Marc Mutz <marc.mutz@kdab.com> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Mark all atomic functions as Q_DECL_NOTHROWThiago Macieira2012-08-091-16/+16
| | | | | | | | | | | | | | | | | | | | | | | | | Actually, only the "new" atomics are marked. The old implementation, based on qoldbasicatomic.h is unchanged, but should still work without a problem. The following configurations were tested and do work: - x86 64-bit - x86 32-bit - generic GCC - generic C++11 std::atomic - bootstrap - ARMv6 and 7 - MIPS - MSVC 2010 32-bit - MSVC 2010 64-bit The only two configurations untested are IA-64 and ARMv5. Except for MSVC, all configurations were tested with GCC 4.6 (MIPS and ARM) and 4.7 (x86 and generics). Change-Id: Iecbfeacd9d20b535453e91335165e9a221e0b47e Reviewed-by: Marc Mutz <marc.mutz@kdab.com> Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
* Add a T parameter to the memory barrier functions in atomics.Thiago Macieira2012-08-071-1/+2
| | | | | | | | This is so we can insert valgrind (helgrind) annotation macros. They require the actual address of the variable to work. Change-Id: I988f6a46385ad58143c53ad34b6cf0f58be2cdb8 Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
* Silence syncqt warnings for atomic implementation headersBradley T. Hughes2012-02-061-0/+4
| | | | | | | | | | Most of these headers are either forwarding headers, or we explicitly stop syncqt so that it doesn't generate class includes for the atomic implementation. Either way, syncqt doesn't see the QT_END_* (and sometimes not QT_BEGIN_*), which this commit fixes. Change-Id: Icc8da6f384f38b1ff4eb265c731ce2f2ed92a1a3 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Remove "All rights reserved" line from license headers.Jason McDonald2012-01-301-0/+1
| | | | | | | | | | As in the past, to avoid rewriting various autotests that contain line-number information, an extra blank line has been inserted at the end of the license text to ensure that this commit does not change the total number of lines in the license header. Change-Id: I311e001373776812699d6efc045b5f742890c689 Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
* Port the ARM atomics to the new QBasicAtomicXXX architectureThiago Macieira2012-01-241-310/+68
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The implementation is divided in two files, as it used to be in the previous implementation: one for ARMv5, one for ARMv6 and up. For the ARMv5 implementation: Drop the non-Linux EABI version of the atomics, as it's not ABI-compatible with the ARMv6 and ARMv7 implementations. This means this ARMv5 implementation only works on Linux. If other systems implement kernel helpers like Linux, they can be added too. We use the __kernel_cmpxchg located at 0xffff0fc0 to implement the operations, except for fetchAndStore, for which we use the SWP instruction. Also introduce the use of __kernel_dmb (at 0xffff0fa0) for the memory barrier. Now this code is SMP-safe even when built with ARMv5. The kernel cmpxchg helper was introduced in Linux 2.6.12, whereas the dmb helper was introduced in 2.6.15. That means 2.6.15 is the minimum version now. For ARMv6 and up: Introduce byte, half-word and doubleword atomics that work on ARMv6K and up. For ARMv6 specifically, the memory barrier instruction (DMB) isn't present, so we need to accomplish the same with the MCR coprocessor instruction. Change-Id: Ife7f9b920bcc7d1eef7611761f6c59ea940ec7df Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Update contact information in license headers.Jason McDonald2012-01-231-1/+1
| | | | | | | Replace Nokia contact email address with Qt Project website. Change-Id: I431bbbf76d7c27d8b502f87947675c116994c415 Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
* Update copyright year in license headers.Jason McDonald2012-01-051-1/+1
| | | | | Change-Id: I02f2c620296fcd91d4967d58767ea33fc4e1e7dc Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
* Update licenseheader text in source files for qtbase Qt moduleJyri Tahtela2011-05-241-17/+17
| | | | | | | Updated version of LGPL and FDL licenseheaders. Apply release phase licenseheaders for all source files. Reviewed-by: Trust Me
* Initial import from the monolithic Qt.Qt by Nokia2011-04-271-0/+431
This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12
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