[英]Valgrind OpenCV
这是我的测试程序:
#include "opencv2/videoio.hpp"
int main(int argc, char** argv) {
cv::VideoCapture videoCapture(argv[1]);
cv::Mat frame;
videoCapture.read(frame);
return 0;
}
我像这样运行这个程序:
valgrind --leak-check=yes ./GyroRecord ./walks6/w63/39840012.avi > valgrind_output 2>&1
以便将整个输出保存在valgrind_output
文件中。
可以在此处检查valgrind_output
的内容。
但是,如果链接将来失效,则摘要如下:
==9677== LEAK SUMMARY:
==9677== definitely lost: 0 bytes in 0 blocks
==9677== indirectly lost: 0 bytes in 0 blocks
==9677== possibly lost: 1,352 bytes in 18 blocks
==9677== still reachable: 166,408 bytes in 1,296 blocks
==9677== of which reachable via heuristic:
==9677== newarray : 1,536 bytes in 16 blocks
==9677== suppressed: 0 bytes in 0 blocks
==9677== Reachable blocks (those to which a pointer was found) are not shown.
==9677== To see them, rerun with: --leak-check=full --show-leak-kinds=all
==9677==
==9677== For counts of detected and suppressed errors, rerun with: -v
==9677== ERROR SUMMARY: 18 errors from 18 contexts (suppressed: 0 from 0)
我想将“可能丢失”的字节减少到 0。这可能吗? 还是在使用 OpenCV 时总是会有一些“可能丢失”的字节?
OpenCV
带有用于valgrind
抑制文件(扩展名为.supp
),可用于隐藏有关已分配资源的消息(通常在程序执行的早期),这些消息将保持分配状态,直到程序终止并且操作系统必须清理混乱.
抑制文件放置在/usr/share/OpenCV
(在我的系统上)中,您可以在要运行的程序之后将它们用作参数(奇怪的是)。
例子:
valgrind --leak-check=yes ./GyroRecord ./walks6/w63/39840012.avi --suppression=/usr/share/OpenCV/valgrind.supp --suppression=/usr/share/OpenCV/valgrind_3rdparty.supp
在OpenCV
项目上运行valgrind
时,使用这些对我有很大帮助。
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