Are Rprintf and REprintf thread-safe?

Thanks - I'll find another way to send messages to the main thread for printing.

-Winston
On Tue, 21 Nov 2017, Winston Chang wrote:

Is it safe to call Rprintf and REprintf from a background thread? I'm
working on a package that makes calls to fprintf(stderr, ...) on a
background thread when errors happen, but when I run R CMD check, it
says:

 Compiled code should not call entry points which might terminate R nor
 write to stdout/stderr instead of to the console, nor the system RNG.

Is it safe to replace these calls with REprintf()?

Only if you enjoy race conditions or segfaults.

Rprintf and REprintf are not thread-safe.

Best,

luke

-Winston

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Are Rprintf and REprintf thread-safe?

Thread (4 messages)