WIP: Multiplicity — per-runtime isolation for concurrent Perl interpreters#480

Merged

fglock merged 38 commits intomasterfrom

feature/multiplicity

Apr 11, 2026

Commits on Apr 10, 2026

feat: add PerlRuntime with ThreadLocal isolation (multiplicity phases 1-4)

fglock
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devin-ai-integration[bot]
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feat: migrate InheritanceResolver caches to PerlRuntime (multiplicity phase 5a)

fglock
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devin-ai-integration[bot]
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feat: migrate GlobalVariable symbol tables to PerlRuntime (multiplicity phase 5b)

fglock
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devin-ai-integration[bot]
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docs: update concurrency design doc with multiplicity progress tracking

fglock
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devin-ai-integration[bot]
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feat: migrate regex match state to PerlRuntime (multiplicity phase 4 partial)

fglock
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devin-ai-integration[bot]
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feat: migrate RuntimeCode caches and eval state to PerlRuntime (multiplicity phase 5d)

fglock
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devin-ai-integration[bot]
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feat: add multiplicity demo - 3 independent Perl interpreters in one JVM

fglock
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devin-ai-integration[bot]
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docs: add git commit -F workaround for single quotes in AGENTS.md

fglock
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devin-ai-integration[bot]
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docs: add multiplicity demo to concurrency design doc

fglock
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devin-ai-integration[bot]
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docs: add Phase 0 compilation thread safety plan to concurrency.md

fglock
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devin-ai-integration[bot]
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feat: add compilation thread safety (multiplicity Phase 0)

fglock
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devin-ai-integration[bot]
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docs: mark Phase 0 compilation thread safety as complete

fglock
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devin-ai-integration[bot]
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feat: add compile lock to RuntimeCode eval paths (Phase 0 completion)

fglock
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devin-ai-integration[bot]
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fix: use boolean flag instead of isHeldByCurrentThread() in evalStringWithInterpreter

fglock
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devin-ai-integration[bot]
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docs: add reentrancy analysis and boolean flag fix to concurrency design doc

fglock
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devin-ai-integration[bot]
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fix: per-runtime globalInitialized + COMPILE_LOCK in executePerlCode

fglock
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devin-ai-integration[bot]
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fix(multiplicity): migrate 16 shared static local-save/restore stacks to per-runtime

fglock
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devin-ai-integration[bot]
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docs: update concurrency design doc with local stack fix and remaining issues

fglock
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devin-ai-integration[bot]
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fix(multiplicity): per-runtime CWD isolation

fglock
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devin-ai-integration[bot]
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fix(multiplicity): per-runtime PID for $$ and pipe thread runtime binding

fglock
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devin-ai-integration[bot]
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docs: update concurrency design doc with CWD isolation and PID/pipe fixes

fglock
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devin-ai-integration[bot]
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docs: move multiplicity demo to dev/sandbox/multiplicity/

fglock
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devin-ai-integration[bot]
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docs: clarify Runtime Pool as optimization in concurrency next steps

fglock
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devin-ai-integration[bot]
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docs: add performance baseline and optimization plan for multiplicity

fglock
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devin-ai-integration[bot]
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docs: expand optimization plan with test methodology and revert criteria

fglock
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devin-ai-integration[bot]
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docs: add git workflow and failed-attempts log to optimization plan

fglock
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devin-ai-integration[bot]
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docs: add git push to failure path so findings are preserved

fglock
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devin-ai-integration[bot]
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perf: cache PerlRuntime.current() in local variables (Tier 1)

fglock
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devin-ai-integration[bot]
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perf: migrate ThreadLocal stacks to PerlRuntime instance fields (Tier 2)

fglock
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devin-ai-integration[bot]
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perf: batch push/pop caller state to reduce ThreadLocal lookups

fglock
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devin-ai-integration[bot]
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perf: batch RegexState save/restore to single PerlRuntime.current() call

fglock
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devin-ai-integration[bot]
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docs: add JFR profiling results and optimization summary to concurrency.md

fglock
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devin-ai-integration[bot]
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perf: skip RegexState save/restore for subroutines without regex ops

fglock
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devin-ai-integration[bot]
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docs: update concurrency.md with final optimization results

fglock
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devin-ai-integration[bot]
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feat: migrate remaining shared static state to per-PerlRuntime

fglock
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devin-ai-integration[bot]
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perf: JVM-compile anonymous subs inside eval STRING

fglock
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devin-ai-integration[bot]
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Commits on Apr 11, 2026