I found the issue "warpAffine memory leak" in the buglist to be handled last year. Is this finished or must it still be "merged" to the project? I'm using OpenCV 3.1.0 with Linux and MS-Windows and the problem still exists. This simple program (I'm sorry, but the input destroys format of the source and deletes some signs) causes a memory leak (a more complex program ran out of memory and caused me to find this). Is this a known issue and will be handled?
include opencv2/core/mat.hpp include opencv2/imgproc.hpp
void Rotate(cv::Mat& Pic, double Angle_Degree) { // Rotate image around center cv::warpAffine( Pic, Pic, cv::getRotationMatrix2D(cv::Point_<float>(Pic.cols/2, Pic.rows/2), Angle_Degree, 1), cv::Size(Pic.cols, Pic.rows), cv::INTER_LINEAR ); }
int main() { cv::Mat Pic(1000, 1000, CV_8UC(3), cv::Scalar::all(0.0)); Rotate(Pic, 45.0); return 0; }
Valgrind now shows:
==6252== 608 bytes in 1 blocks are definitely lost in loss record 21 of 29 ==6252== at 0x4A057BB: calloc (vg_replace_malloc.c:593) ==6252== by 0x3BF5811A82: _dl_allocate_tls (dl-tls.c:318) ==6252== by 0x3BF64072CC: pthread_create@@GLIBC_2.2.5 (allocatestack.c:576) ==6252== by 0x6F31DA8: cv::ThreadManager::initPool() (in /usr/local/lib/libopencv_core.so.3.1.0) ==6252== by 0x6F31EE2: cv::ThreadManager::run(cv::Range const&, cv::ParallelLoopBody const&, double) (in /usr/local/lib/libopencv_core.so.3.1.0) ==6252== by 0x56B3AAE: cv::warpAffine(cv::_InputArray const&, cv::_OutputArray const&, cv::_InputArray const&, cv::Size_<int>, int, int, cv::Scalar_<double> const&) (in /usr/local/lib/libopencv_imgproc.so.3.1.0) ==6252== by 0x411353: Rotate(cv::Mat&, double) (main.cpp:12) ==6252== by 0x411458: main (main.cpp:18) ==6252== ==6252== 4,256 bytes in 7 blocks are possibly lost in loss record 29 of 29 ==6252== at 0x4A057BB: calloc (vg_replace_malloc.c:593) ==6252== by 0x3BF5811A82: _dl_allocate_tls (dl-tls.c:318) ==6252== by 0x3BF64072CC: pthread_create@@GLIBC_2.2.5 (allocatestack.c:576) ==6252== by 0x6F31DA8: cv::ThreadManager::initPool() (in /usr/local/lib/libopencv_core.so.3.1.0) ==6252== by 0x6F31EE2: cv::ThreadManager::run(cv::Range const&, cv::ParallelLoopBody const&, double) (in /usr/local/lib/libopencv_core.so.3.1.0) ==6252== by 0x56B3AAE: cv::warpAffine(cv::_InputArray const&, cv::_OutputArray const&, cv::_InputArray const&, cv::Size_<int>, int, int, cv::Scalar_<double> const&) (in /usr/local/lib/libopencv_imgproc.so.3.1.0) ==6252== by 0x411353: Rotate(cv::Mat&, double) (main.cpp:12) ==6252== by 0x411458: main (main.cpp:18)
