search for: when_fork_end

...that OpenMP is now enabled in MacOS CRAN binaries! Thanks Simon. data.table is supposed to automatically switch down to single-threaded mode when explicitly parallelized via the fork mechanism. It does that via functions registered in init.c as follows : pthread_atfork(&when_fork, &when_fork_end, NULL) Tests 1705 and 1706 test this is working. Those tests are passing ok on CRAN currently including x86_64-apple-darwin15.6.0. I'll work with Yan off list to see what the difference is. Either the fork catch isn't working in that environment for some reason, the use case is differe...