#!/bin/sh

set -eu

die()
{
    echo "$@" 1>&2
    exit 1
}

gotcmd()
{
    command -v "$1" > /dev/null || die "Need command $1"
}

gotfile()
{
    test -e "$1" || die "Need file $1"
}

cpubench_xz()
{
    local filename
    echo "CPU benchmark (xz on a large sparse file)"
    filename="$(mktemp)"
    truncate -s 10G "$filename"
    /bin/time --format="%e" xz -T0 < "$filename" > /dev/null
    rm -f "$filename"
}

cpubench_xz