ammachado opened a new pull request, #28815: URL: https://github.com/apache/camel/pull/28815
# Description [CAMEL-26471](https://issues.apache.org/jira/browse/CAMEL-26471), a tier 3 item of [CAMEL-25132](https://issues.apache.org/jira/browse/CAMEL-25132), in the first group of its suggested order. `StopWatch.taken()` used `Duration.ofNanos(delta).toMillis()`, which allocates a `Duration` unless escape analysis removes it. `TimeUnit.NANOSECONDS.toMillis(delta)` returns the same value without depending on that. The gain is small. In a standalone loop on JDK 25 macOS arm64 (not JMH), after C2: about 1.4 ns to 0.8 ns and no allocation either way. With C1 only: about 5 ns to 1.8 ns and 24 B to 0 B per call. The two conversions gave the same result for 50 million random values and for the boundary values, including negatives, `Long.MIN_VALUE` and `Long.MAX_VALUE`. ## Tests `testTakenTruncatesNanosToMillis` uses `TimeSource.install` for an exact clock. It passes on the old code too, as this change must not alter results. It failed when I replaced the conversion with rounding and with floor division. Verified: `camel-util`, 326 tests, 0 failures. Other modules were not run locally. # Target - [x] I checked that the commit is targeting the correct branch (Camel 4 uses the `main` branch) # Tracking - [x] If this is a large change, bug fix, or code improvement, I checked there is a [JIRA issue](https://issues.apache.org/jira/browse/CAMEL) filed for the change (usually before you start working on it). # Apache Camel coding standards and style - [x] I checked that each commit in the pull request has a meaningful subject line and body. - [ ] I have run `mvn clean install -DskipTests` locally from root folder and I have committed all auto-generated changes. Not run from the root folder: I ran the `camel-util` module tests, and `git status` showed only the two changed files afterwards. # AI-assisted contributions - [x] If this PR includes AI-generated code, commits have proper co-authorship attribution (e.g., `Co-authored-by` trailers) and the PR description identifies the AI tool used. 🤖 Generated with [Claude Code](https://claude.com/claude-code) on behalf of Adriano Machado (@ammachado) _This was generated by an AI agent and may contain inaccuracies. Please verify before relying on it._ -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
