Commit Graph

4 Commits

Author SHA1 Message Date
Tor Arne Vestbø
c3bd5ffdc8 Don't wrap feature detection macros with QT_HAS_FOO() variants
Using wrappers for these macros is problematic when for example passing the
-frewrite-includes flag to preprocess sources before shipping off to distcc
or Icecream. It will also start producing warnings when compilers implement
http://eel.is/c++draft/cpp.cond#7.sentence-2. See for example
https://reviews.llvm.org/D49091

Both https://clang.llvm.org/docs/LanguageExtensions.html and the SD-6 document at
https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations
recommend defining '__has_foo(x) 0' as a fallback for compilers without the
macros, so that's what we go for.

Change-Id: I0298cd3b4a6ff6618821e34642a5ddd6728be767
Reviewed-by: Alex Richardson <arichardson.kde@gmail.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-12-10 00:48:07 +01:00
Konstantin Shegunov
c6bee8e4b2 Fix integer overflows in QDeadlineTimer
If the deadline is far in the future, the conversions to nanoseconds
or internal arithmetic may overflow and give an invalid object, thus
the deadline may end up in the past. Added a test to the testlib
selftest for sleep.

[ChangeLog][QtCore][QDeadlineTimer] Fixed integer overflows
leading to immediate timeouts.

Task-number: QTBUG-69750
Change-Id: I9814eccdf9f9b3add9ca66ec3e27e10cd5ad54a8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-05-08 17:19:44 +00:00
Thiago Macieira
6ec86513dd Increase the resolution for QDeadlineTimer unit test
Apparently, the CI can run something over 1000x slower than on my
machine. We're getting over 100 ms delays in operations that shouldn't
have taken more than half a millisecond. The last report was of 136%
over budget, so I multiplied the resolution by 4.

Change-Id: I9093948278414644a416fffd1474406967b2a6ee
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@qt.io>
2016-10-26 03:16:26 +00:00
Thiago Macieira
12eacc3bab Long live QDeadlineTimer
It's like QElapsedTimer, but marks a time in the future instead.

[ChangeLog][QtCore] Added QDeadlineTimer, a counterpart to
QElapsedTimer, used to mark a time point in the future (a deadline) and
determine whether such a deadline has passed.

Change-Id: Ifea6e497f11a461db432ffff144921f7fbc1d1d3
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2016-08-15 03:07:16 +00:00