leonarski_fandClaude Opus 5 547d2f5fa6 Pre-flight: check the master file, not every data file of the run
5f838bdb2 widened CheckOutputFilesAvailable from the master file to every data
file the run will write, so a stale _data_000001.h5 would be caught up front
rather than at the rename. The enumeration is unbounded: it is one
std::filesystem::exists per planned file, so a long run with a small
images_per_file - it can be set to 1 - is thousands of lookups, and they run
inside the 5 s PREFLIGHT ACK budget that BUSY heartbeats do not extend. On a
shared filesystem that turns a writable output into an "ACK timeout", which is
both wrong and unreadable. It also called HDF5Metadata::DataFileName for every
planned file, and that throws past file 999999 (9999 on SwissFEL), refusing a run
up front on a file number the acquisition would never reach.

Back to the master file alone, which is what the constructor checked before. A
data file in the way is caught per-writer at finalize again, as it was.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016L1qig74oYQzfUJJZbbxFh
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Jungfraujoch

Application to receive data from the PSI JUNGFRAU and EIGER detectors.

All documentation is now placed in docs/ subdirectory and for the current version hosted on Jungfraujoch Read The Docs page.

S
Description
Jungfraujoch Data Acquisition System
Readme GPL-3.0
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