% Generated by roxygen2: do not edit by hand

% Please edit documentation in R/fork.R

\name{isProcessForkedChild}

\alias{isProcessForkedChild}

\title{Is the Current Process a Forked Child?}

\usage{

isProcessForkedChild()

}

\value{

A length-one logical.

}

\description{

Returns \code{TRUE} if the current process is a \code{fork()} of the process in which

RcppParallel was originally loaded.

}

\details{

Intel TBB — the parallel backend used by \code{parallelFor()} and

\code{parallelReduce()} — does not support being used in a child process after

\code{fork()}. Packages that may be invoked from within \code{parallel::mclapply()}

or similar fork-based parallelism should call \code{isProcessForkedChild()} and

fall back to a serial code path when it returns \code{TRUE}.

On Windows, which has no \code{fork()}, this always returns \code{FALSE}.

}

\examples{

\dontrun{

library(RcppParallel)

isProcessForkedChild()

parallel::mclapply(1:2, function(i) RcppParallel::isProcessForkedChild())

}

}