mirror of
https://github.com/rsyslog/rsyslog.git
synced 2026-08-24 19:24:14 +02:00
ab11e9c0f7
Why: several hot paths used legacy atomic idioms where read-only and weak state observations paid unnecessary synchronization cost or used mutex fallbacks in signal-sensitive paths. Impact: common counters and weak flags use cheaper atomic operations on modern compilers while preserving fallback behavior for older platforms. Before/After: before, helpers leaned on __sync fetch operations and some signal flags used mutex-backed access; after, helpers use __atomic operations with explicit relaxed/acquire/release intent and signal-safe weak flag access. Technical Overview: Replace legacy __sync-based helper implementations with __atomic forms. Remove the now-unused separate load/store autoconf probe. Add relaxed helper variants for statistics and weak object state paths. Use PREFER_* helpers for signal-observed flags that tolerate weak fallback reads. Keep bHadHUP set until doHUP() completes for imdiag AwaitHUPComplete. Preserve 64-bit/time_t fallback mutexes for platforms without 64-bit atomics. Adjust sanitizer suppressions for known helper-access false positives. Join tcpsrv and imbeats workers before tearing down shared listener state. Add a small mmutf8fix regression coverage improvement touched by this work. With the help of AI-Agents: Codex