Implement PCRE2 JIT compilation #12866
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| # can't be any concurrent access to the JIT stack. | ||
| @[ThreadLocal] | ||
| class_getter jit_stack : LibPCRE2::JITStack do | ||
| jit_stack = LibPCRE2.jit_stack_create(32_768, 1_048_576, Regex::PCRE2.general_context) |
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Maybe for a follow up, but these magic numbers could be or'ed with the ENV in order to have some control. I'm thinking in particular of memory-restricted apps.
| when .jit_badoption? | ||
| # okay | ||
| else | ||
| raise ArgumentError.new("Regex JIT compile error: #{error}") |
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Isn't this a bit too harsh? Without compilation the application might still work, even if slow. This said, I'm not sure how could we let the user know that something went wrong.
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I'm not sure what errors can actually reasonably appear here. When JIT compilation is not supported, that's indicated by ERROR_JIT_BADOPTION and handled in the previous branch (we ignore that).
Anything else, I don't know. But I would probably expect that could be more fatal errors where you may not be able to just continue on.
A more plausible point for ignoring errors might be when JIT stack allocation fails (jit_stack_create).
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PCRE2_ERROR_NOMEMORY is another one we might want to not raise. I wonder if it makes sense to just ignore any error and have a @compiled : Bool to know if it was compiled or not
Adds JIT support to the PCRE2 engine introduced in #12856.