| Commit message (Collapse) | Author | Age | Files | Lines |
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Saves ~600B in text size on optimized GCC 9.1 Linux AMD64 builds.
Change-Id: I12f4e7c8d28af9549b481859bc96a155aeb6f15c
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: MÃ¥rten Nordheim <marten.nordheim@qt.io>
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This reverts commit ac0184d6085d9e4f7f59352e563055311f4d8792. That
commit added the use of qHash in qt_safe_ftok, which made ftok even more
unsafe than previously. Since the algorithm in qHash can change across
Qt versions, we need a stable algorithm instead.
[ChangeLog][Important Behavior Changes] Reverted a change that caused Qt
5.6 through 5.8 not to connect to QSystemSemaphore and QSharedMemory
created by running applications using Qt earlier than
5.6. Unfortunately, this means that Qt 5.9 will not connect to 5.6-5.8.
Task-number: QTBUG-60771
Change-Id: Ibc3472e1c11d46358357fffd14bf51aeb48ef2c8
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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Change-Id: I755834b77e50ff6f44bda561f007ec3306f3c1f9
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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The printf-style version of QDebug expands to a lot less code than the
std::ostream-style version. Of course, you pay in type safety (but
compilers warn about it these days), you cannot stream complex Qt
types and streaming QStrings is awkward, but in many cases you
actually improve on readability.
But the main reason is that something that's not supposed to be
executed under normal operation has no business bloating executable
code size.
This is not an attempt at converting all qWarnings() to printf-style,
only the low-hanging fruit.
In this second part, replace
qWarning() << "" << non-QString
with
qWarning("..%.", non-QString).
QString (and QUrl etc) have special escaping handling when streamed
into QDebug, so leave those alone. They also seem to expand to less
code than the qPrintable() alternative, so there's no reason to
replace them.
Saves 2KiB, 3.4KiB, ~750b and ~450b in text size in QtCore, Gui,
Network and Widgets, resp., on optimized GCC 5.3 AMD64 builds.
Change-Id: Iae6823e543544347e628ca1060d6d51e3b04d3f4
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
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The printf-style version of QDebug expands to a lot less code than the
std::ostream-style version. Of course, you pay in type safety (but
compilers warn about it these days), you cannot stream complex Qt
types and streaming QStrings is awkward, but in many cases you
actually improve on readability.
But the main reason is that something that's not supposed to be
executed under normal operation has no business bloating executable
code size.
This is not an attempt at converting all qWarnings() to printf-style,
only the low-hanging fruit.
In this first part, replace
qWarning() << ""
with
qWarning("...").
Saves ~750b in text size on optimized GCC 5.3 AMD64 builds.
Change-Id: I8bf3e46cd5a6b2cae0ceb3e355a50f61925c63d3
Reviewed-by: Kai Koehne <kai.koehne@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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The ftok function unfortunately can return duplicate keys even for different
files if the same project id is used. This is discussed e.g. in Stevens'
"Advanced Programming in the UNIX Environment".
We want the key to be predictable so we cannot just pass a random number as
the project id. To reduce the propability of key collisions we hash the file
name with the project number as seed for a predictable value. This is the same
approach taken e.g. by Apache, but the real fix is to move away from System V
IPC completely once this is feasible on our supported platforms.
Task-number: QTBUG-48375
Change-Id: If1a57f215f7ddd147aa38919907cfb83db07aea0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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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>
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This patch is a forward-port from 4.8 branch
(d869e1ad4b0007757e97046609de2097cd9e9c5d).
Change-Id: I6ae36a5417d1176fbecf775668f6033b1cb22a94
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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