const osutil = require("./util/osutil")
const shell = require("./shell")

function free(level) {
    osutil.choise({
        [osutil.Windows] : ( level ) => {
            throw Error("暂不支持")
        },
        [osutil.Linux] : ( level ) => {
            if ( [1,2,3].indexOf( parseInt(level,10)) === -1 ) {
                level = 1
            }
            shell.execSync("sync")
            shell.execSync(`echo ${level} > /proc/sys/vm/drop_caches`)
        },
    })
}


module.exports = {
    free
}