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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Luke Tierney
Ralph E. Wareham Professor of Mathematical Sciences
University of Iowa Phone: 319-335-3386
Department of Statistics and Fax: 319-335-3017
Actuarial Science
241 Schaeffer Hall email: luke-tier...@uiowa.edu
Iowa City, IA 52242 WWW: http://www.stat.uiowa.edu
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