Update truffleruby workflow now that Prism is default #2358
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* Because installing JVMCI now needs to have graal cloned or clones it.
kddnewton
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Feb 3, 2024
headius
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Mar 13, 2024
All of these operations are leaves, so no reentrancy is necessary. None of them make any blocking calls, either, so they should return very quickly. And use of StringIO under concurrent load is very unusual and unlikely to lead to contention. This patch switches from using hard JVM synchronization to instead just spin- lock on an atomic int value associated with the data ptr object. Performance on a benchmark of the Prism parser from ruby/prism#2358 shows a reduction per loop from 0.050s to 0.044s.
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Test run at https://github.com/ruby/prism/actions/runs/7766621135/job/21182640278