Why not set up a new runops loop directly in the first place?
I'm not sure I understand you. When the tie magic code calls FETCH, it starts a new runops loop to execute the ops within the FETCH sub (but it doesn't do a JMPENV_PUSH). If the FETCH function doesn't do any eval-ly stuff, then that's it. If the FETCH does eval {}, then the first time pp_entertry is called, a second runops loop is started, and JMPENV_PUSH is done. The rest of the ops within that eval, and continuing outside that eval, are executed within the inner runops loop, including any ops within second and subsequent eval {}'s. Finally, when FETCH returns, two runops loops and a jump level are exited.

Dave.

In reply to Re^6: How does CATCH_SET optimize efficiency? by dave_the_m
in thread How does CATCH_SET optimize efficiency? by PerlOnTheWay

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