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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
Marc Mutz 333b1e9229 QReadWriteLock: add a check for writeOnly, too 
Results on my machine:

  PASS   : tst_QReadWriteLock::writeOnly(QMutex)
  RESULT : tst_QReadWriteLock::writeOnly():QMutex:
     3,607 msecs per iteration (total: 3,607, iterations: 1)
  PASS   : tst_QReadWriteLock::writeOnly(QReadWriteLock)
  RESULT : tst_QReadWriteLock::writeOnly():QReadWriteLock:
     39,703 msecs per iteration (total: 39,703, iterations: 1)
  PASS   : tst_QReadWriteLock::writeOnly(std::mutex)
  RESULT : tst_QReadWriteLock::writeOnly():std::mutex:
     3,697 msecs per iteration (total: 3,697, iterations: 1)
  PASS   : tst_QReadWriteLock::writeOnly(std::shared_mutex)
  RESULT : tst_QReadWriteLock::writeOnly():std::shared_mutex:
     5,727 msecs per iteration (total: 5,727, iterations: 1)
  PASS   : tst_QReadWriteLock::writeOnly(std::shared_timed_mutex)
  RESULT : tst_QReadWriteLock::writeOnly():std::shared_timed_mutex:
     5,921 msecs per iteration (total: 5,921, iterations: 1)

(the 'nothing' test of course doesn't work with writing, as writing to
the same QString from different threads is UB)

Change-Id: Ia78b54963a51eaf6563ce0d243316a3337056a83
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
 2019-09-12 06:38:42 +02:00
Marc Mutz 72259e7186 Brush up QReadWriteLock benchmark 
- add override
- tests C++17 shared_mutex in addition to C++14 shared_timed_mutex
- replace manual memory management with unique_ptr

Change-Id: If52df2097a4b92c10df4a7cdbb1c506d64b673e3
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
 2019-09-12 06:38:23 +02:00
Kai Koehne b2efaeba79 tests: Unify license to GPL-EXCEPT 
Change-Id: Ic718650a8a7bddd4ee28c5650a3f5baf70886e51
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Jani Heikkinen <jani.heikkinen@qt.io>
 2017-04-03 07:18:46 +00:00
Olivier Goffart 5699530758 Add a benchmark for QReadWriteLock 
Results on current dev branch [955b2bdfc0]:

thread count: 4
********* Start testing of tst_QReadWriteLock *********
Config: Using QtTest library 5.8.0, Qt 5.8.0 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 6.1.1 20160707)
PASS   : tst_QReadWriteLock::initTestCase()
PASS   : tst_QReadWriteLock::uncontended(nothing)
RESULT : tst_QReadWriteLock::uncontended():"nothing":
     1,113,292.1 CPU ticks per iteration (total: 11,132,922, iterations: 10)
PASS   : tst_QReadWriteLock::uncontended(QMutex)
RESULT : tst_QReadWriteLock::uncontended():"QMutex":
     35,490,310.7 CPU ticks per iteration (total: 354,903,108, iterations: 10)
PASS   : tst_QReadWriteLock::uncontended(QReadWriteLock, read)
RESULT : tst_QReadWriteLock::uncontended():"QReadWriteLock, read":
     40,513,695.0 CPU ticks per iteration (total: 405,136,950, iterations: 10)
PASS   : tst_QReadWriteLock::uncontended(QReadWriteLock, write)
RESULT : tst_QReadWriteLock::uncontended():"QReadWriteLock, write":
     43,179,327.2 CPU ticks per iteration (total: 431,793,272, iterations: 10)
PASS   : tst_QReadWriteLock::uncontended(std::mutex)
RESULT : tst_QReadWriteLock::uncontended():"std::mutex":
     37,733,243.0 CPU ticks per iteration (total: 377,332,430, iterations: 10)
PASS   : tst_QReadWriteLock::uncontended(std::shared_timed_mutex, read)
RESULT : tst_QReadWriteLock::uncontended():"std::shared_timed_mutex, read":
     71,517,438.7 CPU ticks per iteration (total: 715,174,388, iterations: 10)
PASS   : tst_QReadWriteLock::uncontended(std::shared_timed_mutex, write)
RESULT : tst_QReadWriteLock::uncontended():"std::shared_timed_mutex, write":
     69,967,867.5 CPU ticks per iteration (total: 699,678,676, iterations: 10)
PASS   : tst_QReadWriteLock::readOnly(nothing)
RESULT : tst_QReadWriteLock::readOnly():"nothing":
     479,393,335.3 CPU ticks per iteration (total: 4,793,933,354, iterations: 10)
PASS   : tst_QReadWriteLock::readOnly(QMutex)
RESULT : tst_QReadWriteLock::readOnly():"QMutex":
     823,493,383.2 CPU ticks per iteration (total: 8,234,933,832, iterations: 10)
PASS   : tst_QReadWriteLock::readOnly(QReadWriteLock)
RESULT : tst_QReadWriteLock::readOnly():"QReadWriteLock":
     559,816,053.6 CPU ticks per iteration (total: 5,598,160,536, iterations: 10)
PASS   : tst_QReadWriteLock::readOnly(std::mutex)
RESULT : tst_QReadWriteLock::readOnly():"std::mutex":
     961,903,416.3 CPU ticks per iteration (total: 9,619,034,164, iterations: 10)
PASS   : tst_QReadWriteLock::readOnly(std::shared_timed_mutex)
RESULT : tst_QReadWriteLock::readOnly():"std::shared_timed_mutex":
     1,786,254,363.5 CPU ticks per iteration (total: 17,862,543,636, iterations: 10)
PASS   : tst_QReadWriteLock::cleanupTestCase()
Totals: 14 passed, 0 failed, 0 skipped, 0 blacklisted, 44507ms
********* Finished testing of tst_QReadWriteLock *********

Change-Id: I42189f7a356dcb36378e9d54111b7fbe89e62402
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
 2016-08-10 09:05:14 +00:00