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2024-03-31treewide: future-proof frozen_string_literal changes
Once again Ruby seems ready to introduce more incompatibilities and force busywork upon maintainers[1]. In order to avoid incompatibilities in the future, I used a Perl script[2] to prepend `frozen_string_literal: false' to every Ruby file. Somebody interested will have to go through every Ruby source file and enable frozen_string_literal once they've thoroughly verified it's safe to do so. [1] https://bugs.ruby-lang.org/issues/20205 [2] https://yhbt.net/add-fsl.git/74d7689/s/?b=add-fsl.perl
2017-12-22tests: cleanup some unused variable warnings
Add a new "check-warnings" target to the GNUmakefile to make checking for this easier. Warnings aren't fatal, and newer versions of Ruby tend to increase warnings.
2011-06-16replace fchmod()-based heartbeat with raindrops
This means we no longer waste an extra file descriptor per worker process in the master. Now there's no need to set a higher file descriptor limit for systems running >= 1024 workers.