Open Source Computer Vision Library https://opencv.org/

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opencv/modules

History

Zhigang Gong 0b08d2559e fix potential race condition in canny.cl. ... See the below code snippet: while(l_counter != 0) { int mod = l_counter % LOCAL_TOTAL; int pix_per_thr = l_counter / LOCAL_TOTAL + ((lid < mod) ? 1 : 0); for (int i = 0; i < pix_per_thr; ++i) { int index = atomic_dec(&l_counter) - 1; .... } .... barrier(CLK_LOCAL_MEM_FENCE); } If we don't put a barrier before the for loop, then there is a possiblity that some work item enter this loop but the others are not, the the l_counter will be reduced in the for loop and may be changed to zero, and the other work items may can't enter the while loop. If this happens, it breaks the barrier's rule which requires all the work items reach the same barrier. And it may hang the GPU depends on the implementation of opencl platform. This issue is raised at: https://github.com/Itseez/opencv/issues/5175 Signed-off-by: Zhigang Gong <zhigang.gong@linux.intel.com>		9 years ago
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calib3d	…
core	Linux bug fix for ThrustAllocator.	9 years ago
cudaarithm	…
cudabgsegm	…
cudacodec	…
cudafeatures2d	…
cudafilters	…
cudaimgproc	…
cudalegacy	…
cudaobjdetect	…
cudaoptflow	…
cudastereo	…
cudawarping	…
cudev	…
features2d	…
flann	…
highgui	…
imgcodecs	…
imgproc	fix potential race condition in canny.cl.	9 years ago
java	…
ml	svmsgd.cpp, fix #6248	9 years ago
objdetect	…
photo	…
python	…
shape	…
stitching	…
superres	…
ts	…
video	Merge pull request #6045 from matthieu-ft:master	9 years ago
videoio	…
videostab	…
viz	…
world	…
CMakeLists.txt	…