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9 Commits

Author SHA1 Message Date
cyy
09837928d9 Merge pull request #12357 from DEEPIR:master 
* fix some static analyzer warnings

* fix some static analyzer warnings

* fix race condition of workthread control
 2018-09-02 16:34:43 +03:00
Alexander Alekhin
98c8584b88 next: drop CV_CXX11 conditions 
define itself is still here for compatibility
 2018-04-10 18:09:54 +03:00
Alexander Alekhin
7dc162cb42 core: fix mm_pause() for non-SSE i386 builds 
replaced to safe binary compatible 'rep; nop' asm instruction
 2018-04-09 18:37:35 +03:00
Alexander Alekhin
491502a349 core: fix parallel_for data race 2018-02-16 21:13:48 +03:00
luz.paz
5718d09e39 Misc. modules/ typos 
Found via `codespell`
 2018-02-12 07:09:43 -05:00
Alexander Alekhin
914f57f28d core(parallel_for): fix data race 2018-02-06 18:19:50 +03:00
Alexander Alekhin
b10fedde56 core(parallel_for): cleanup 
remove 'dont_wait' (can be replaced with has_wake_signal)
 2018-02-06 16:10:41 +03:00
Sayed Adel
4e1d396ce1 core:ppc Add yield support 2018-01-31 04:03:35 +00:00
Alexander Alekhin
c49d5d5252 core: fix pthreads performance 
OpenCV pthreads-based implementation changes:
- rework worker threads pool, allow to execute job by the main thread too
- rework synchronization scheme (wait for job completion, threads 'pong' answer is not required)
- allow "active wait" (spin) by worker threads and by the main thread
- use _mm_pause() during active wait (support for Hyper-Threading technology)
- use sched_yield() to avoid preemption of still working other workers
- don't use getTickCount()
- optional builtin thread pool profiler (disabled by compilation flag)
 2018-01-26 04:09:11 +00:00