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| author | Arthur Hanson Rasmusson <arthur@vgpu.io> | 2026-10-27 10:13:29 -0400 |
|---|---|---|
| committer | Arthur Hanson Rasmusson <arthur@vgpu.io> | 2026-10-27 10:13:29 -0400 |
| commit | cb1653d62f521943497e5705803f461ab7041dda (patch) | |
| tree | cae0f7115051825d0e495e6e6e85e61a52c7304f /tools/lg/frame_reader.py | |
| parent | 38ba1e2d7d579c2467dfa10daca16cdbd6579089 (diff) | |
| download | open-iov-cb1653d62f521943497e5705803f461ab7041dda.tar.gz open-iov-cb1653d62f521943497e5705803f461ab7041dda.zip | |
tools/lg: seed frame_reader last_seq from shm header
A stale frame left in the kvmfr shm by a previous publisher run (xshm_pub
restarts its own seq at 1) was saved and then blocked the new run's frames
via the seq-collision rule. Seeding last_seq from the header's current seq
skips the stale frame and lets a fresh run's frames save normally.
Diffstat (limited to 'tools/lg/frame_reader.py')
| -rw-r--r-- | tools/lg/frame_reader.py | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/lg/frame_reader.py b/tools/lg/frame_reader.py index f8bab40..783fcaf 100644 --- a/tools/lg/frame_reader.py +++ b/tools/lg/frame_reader.py @@ -46,7 +46,11 @@ def main(): deadline = time.time() + args.timeout saved = 0 - last_seq = 0 + mm.seek(FRAME_OFFSET) + magic, _v, _w, _h, _s, _f, last_seq, _r, _t = HDR.unpack(mm.read(HDR.size)) + if magic != MAGIC: + last_seq = 0 + print("SEED last_seq=%d" % last_seq) while saved < args.frames and time.time() < deadline: mm.seek(FRAME_OFFSET) magic, ver, w, h, stride, fmt, seq, _res, ts = HDR.unpack( |