Module atomic 

Atomic file writes for crash-safe output.

All output files are written via a temporary file alongside the final destination, flushed and fsynced, then atomically renamed into place. This guarantees that the final path either contains the complete, valid output or does not exist at all — partial or corrupt files are never left behind even if the process crashes or is interrupted.

Platform Notes

• On POSIX systems, std::fs::rename is atomic within the same filesystem. The temporary file is created in the same directory as the destination to ensure they share a mount point.
• File::sync_all() is called before rename to flush OS and hardware buffers.
• On rename failure, the temporary file is cleaned up on a best-effort basis.

Structs

AtomicFileWriter

An atomic file writer that writes to a temporary file and renames on completion.

Functions

atomic_write

Write data to dest atomically.