В Tue, 20 Feb 2024 12:27:35 +0100
"webmail.gandi.net" <phgrosj...@sciviews.org> пишет:
> When R process #1 is R 4.2.3, it works as expected (whatever version
> of R #2). When R process #1 is R 4.3.2, nothing is sent or received
> through the socket apparently, but no error is issued and process #2
> seems to be able to connect to the socket.
The difference is related to the change in
src/library/tcltk/src/tcltk_unix.c.
In R-4.2.1, the function static void TclSpinLoop(void *data) says:
int max_ev = 100;
/* Tcl_ServiceAll is not enough here, for reasons that escape me */
while (Tcl_DoOneEvent(TCL_DONT_WAIT) && max_ev) max_ev--;
In R-devel, the function instead says:
int i = R_TCL_SPIN_MAX;
while (i-- && Tcl_ServiceAll())
;
Manually calling Tcl_DoOneEvent(0) from the debugger at this point
makes the Tcl code respond to the connection. Tcl_ServiceAll() seems to
be still not enough. I'll try reading Tcl documentation to investigate
this further.
--
Best regards,
Ivan
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