thread context 4/n: interpreter skeleton - #1845
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Locates a thread-local variable at unwind time: TP-relative when module_id is 0, else an offset within that module's TLS block, completed once libc introspection supplies the DTV layout. resolved is explicit because a zeroed TLSVarInfo is otherwise a valid static descriptor. Fields are private to ensure callers go through the constructors: generate.sh lowercases them after godefs, which exports every field name.
Type ID, config wiring, and eBPF declarations (map, proc info struct, stub unwind_stop hook) for the thread context interpreter, mirroring luajit's boilerplate. Enabled by default; -tracers thread_context warns it's a stub.
nsavoire
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nsavoire
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September 11, 2026 09:33
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Part of the PR #1229 split.
Adds thread context interpreter skeleton, eBPF map, config wiring, and the eBPF skeleton.
What's here
libpf.ThreadContextinterpreter type ID.threadcontextpackage whoseloader/Attach/Detachare stubs:loaderalways returnsnil, nil, so no interpreterDatais ever created andAttach/Detachnever run.ThreadContextProcInfooverTLSVarInfo, thethread_context_procseBPF map, and amaybe_add_thread_context_infostub wired intounwind_stopthat does onebpf_map_lookup_elemand nothing else.existing default-on pattern instead.
Where this sits in the stack
TLSVarInfo.tlsPR.