Re: [TCLCORE] TIP #462 : Request For Comments

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> De: "Donal K. Fellows" <dona...@manchester.ac.uk>> > What *necessarily* blocking operations are there on a subprocess> pipeline right now? (Reading and writing the pipes isn't necessarily> blocking, that's just the default mode.)

Sorry I don't understand your question. Just to make things clear, no changes were made to the existing behavior and semantics of [exec], [open |] or anything that relies on Tcl_OpenCommandChannel/TclCreatePipeline, besides the extra bookkeeping used by tcl::process. And that bookkeeping only blocks on a single mutex that protects the shared structures (that's infoTablesMutex in generic/tclProcess.c).

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