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V4L2 : heisenbug spotted around VIDIOC_DQBUF, infinite loop

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Tonton Th
2020-12-26 18:37:04 +01:00
parent ce96b51ca4
commit 14ded65303
2 changed files with 24 additions and 22 deletions
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17
v4l2/notes.txt Normal file
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@@ -0,0 +1,17 @@
Heisenbug dans la capture d'image.
CLEAR(buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
xioctl(fd, VIDIOC_DQBUF, &buf);
ioctl(3, VIDIOC_DQBUF, {type=V4L2_BUF_TYPE_VIDEO_CAPTURE}) = -1 EAGAIN (Resource temporarily unavailable)
ioctl(3, VIDIOC_DQBUF, {type=V4L2_BUF_TYPE_VIDEO_CAPTURE}) = -1 EAGAIN (Resource temporarily unavailable)
ioctl(3, VIDIOC_DQBUF, {type=V4L2_BUF_TYPE_VIDEO_CAPTURE^Cstrace: Process 11181 detached