monadicbase: The R Base Package

Functions to set CPU and/or elapsed time limits for top-level computations or the current session.

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setTimeLimit(cpu = Inf, elapsed = Inf, transient = FALSE)

setSessionTimeLimit(cpu = Inf, elapsed = Inf)

`cpu`	double. Limit on total cpu time.
`elapsed`	double. Limit on elapsed time.
`transient`	logical. If `TRUE`, the limits apply only to the rest of the current computation.

setTimeLimit sets limits which apply to each top-level computation, that is a command line (including any continuation lines) entered at the console or from a file. If it is called from within a computation the limits apply to the rest of the computation and (unless transient = TRUE) to subsequent top-level computations.

setSessionTimeLimit sets limits for the rest of the session. Once a session limit is reached it is reset to Inf.

Setting any limit has a small overhead – well under 1% on the systems measured.

Time limits are checked whenever a user interrupt could occur. This will happen frequently in R code and during Sys.sleep, but only at points in compiled C and Fortran code identified by the code author.

‘Total cpu time’ includes that used by child processes where the latter is reported.

robertzk/monadicbase documentation built on May 27, 2019, 10:35 a.m.