You should assume that NO functions or macros in the R API are
thread-safe. If some happen to be now, on some platforms, they are
not guaranteed to be in the future. Even if you use a global lock you
need to keep in mind that any function in the R API can signal an
error and execute a longjmp, so you need to make sure you have set a
top level context in your thread.
Best,
luke
On Sun, 13 Sep 2020, Jiefei Wang wrote:
Hi,
I am curious about whether there exist thread-safe functions in
`Rinternals.h`. I know that R is single-threaded designed, but for the
simple and straightforward functions like `DATAPTR` and `INTEGER_GET_REGION`,
are these functions safe to call in a multi-thread environment?
Best,
Jiefei
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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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