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cultcache-rs: the replace doc says absence to a lock-free reader is rare on NTFS, not impossible
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Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
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Libby 2026-11-12 23:06:22 +00:00
commit d265b7d647
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packages/cultcache-rs/src/lib.rs
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@ -4417,7 +4417,9 @@ trait ReplaceKernel {
const MOVEFILE_REPLACE_WRITE_THROUGH: u32 = 0x9;
/// Replaces `destination` with `staged` on Windows: a POSIX-semantics rename first, so a reader
/// that opened the old store keeps it and never sees the destination absent; MoveFileExW with
/// that opened the old store keeps it and the destination is rarely seen absent (a stalled rename
/// can still leave it absent for 5-47 ms on NTFS: `variants:ruling:posix-rename-absent-window-document`);
/// MoveFileExW with
/// write-through where POSIX semantics are unsupported (FAT, exFAT, before Windows 10 1607),
/// for the rest of the call; and a bounded retry on access, sharing and lock violations.
/// A concurrent reader (another process, an indexer, an antivirus scan) makes the replace fail