search for: r_wait_usec

On unix, unless event polling is enabled Sys.sleep just waits in a select() call (with a SIGINT handler in place) so the elapsed time isn't checked until after the select call is complete. Rstudio uses event polling, and in particular sets R_wait_usec to 10000, which means event and interrupt checks happen during a Sys.seep call. The R GUI on macOS doesn't seem to do this (but my lldb skills aren't up to checking). Now that we have this elapsed time limit mechanism it might be a good idea to set the default for R_wait_usec to something...

Dear list, I am trying to embed R into a C++ program. After some tinkering, reading the documentation and browsing the source code I have this more or less working. A very very condensed and very simplified version of the code is included below. The program can create plots. However, after the plot is initially drawn it is no longer updated. When scaling or updating the plot the window becomes

...iowa.edu> wrote: >> On unix, unless event polling is enabled Sys.sleep just waits in a >> select() call (with a SIGINT handler in place) so the elapsed time >> isn't checked until after the select call is complete. Rstudio uses >> event polling, and in particular sets R_wait_usec to 10000, which >> means event and interrupt checks happen during a Sys.seep call. The R >> GUI on macOS doesn't seem to do this (but my lldb skills aren't up to >> checking). Now that we have this elapsed time limit mechanism it might >> be a good idea to set the d...

...uke-tierney at uiowa.edu> wrote: > On unix, unless event polling is enabled Sys.sleep just waits in a > select() call (with a SIGINT handler in place) so the elapsed time > isn't checked until after the select call is complete. Rstudio uses > event polling, and in particular sets R_wait_usec to 10000, which > means event and interrupt checks happen during a Sys.seep call. The R > GUI on macOS doesn't seem to do this (but my lldb skills aren't up to > checking). Now that we have this elapsed time limit mechanism it might > be a good idea to set the default for R_wai...

Thank you for the feedback and confirmations. Interesting to see that it's also reproducible on macOS expect for Spencer; that might indicate a difference in builds. BTW, my original post suggested that timeout error was for sure detected while running Sys.sleep(10). However, it could of course also be that it is only detected after it finishes. For troubleshooting, the

...FIG_H -std1 -ieee_with_inexact -I/soft/readline/v4.2.1/include -c sockconn.c -o sockconn.lo /usr/bin/cc -shared -L/soft/readline/v4.2.1/lib -o internet.so Rsock.lo internet.lo nanoftp.lo nanohttp.lo sock.lo sockconn.lo ld: Warning: Unresolved: getSelectedHandler R_InputHandlers R_PolledEvents R_wait_usec R_NaInt Rf_error Rf_warning Rprintf REprintf R_ExpandFileName R_NilValue Rf_allocVector Rf_asInteger Rf_asLogical Rf_GetOption Rf_install Rf_isString Rf_length Rf_protect Rf_unprotect R_Consolefile R_Busy Rf_checkArity R_fopen init_con R_setInternetRoutines dummy_vfprintf gmake[5]: Entering directo...