R/multProc.R

In GladiaTOX: R Package for Processing High Content Screening data

#####################################################################
## This program is distributed in the hope that it will be useful, ##
## but WITHOUT ANY WARRANTY; without even the implied warranty of  ##
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the    ##
## GNU General Public License for more details.                    ##
#####################################################################

#' @keywords internal
#' 
#' @importFrom parallel mclapply
#' 

.multProc <- function(id, lvl, type, ncores) {

    proc_func <- get(paste0(type, lvl))

    tmp <- mclapply(id, proc_func, mc.cores=ncores, mc.preschedule=FALSE)
    message("Writing level", lvl, "data for",
            lw(sapply(tmp, "[[", 1)), "ids...\n")
    stime <- Sys.time()
    dat <- rbindlist(lapply(tmp, "[[", 2))
    if (nrow(dat) == 0) {
        ttime <- round(difftime(Sys.time(), stime, units="sec"), 2)
        ttime <- paste(unclass(ttime), units(ttime))
        message("Writing level ", lvl, " complete. (", ttime, ")\n", sep="")
        return(sapply(tmp, "[[", 1))
    }
    gtoxWriteData(dat=dat, lvl=lvl, type=type)
    ttime <- round(difftime(Sys.time(), stime, units="sec"), 2)
    ttime <- paste(unclass(ttime), units(ttime))
    message("Writing level ", lvl, " complete. (", ttime, ")\n", sep="")

    sapply(tmp, "[[", 1)

}