multithreading.sh

TCAP=3
echo "Using $TCAP threads."

export UUID=$(uuidgen)
echo "[debug] UUID=$UUID"
echo ""

function _getHeap() {
    cat /tmp/heap-$UUID
}
function _setHeap() {
    echo $1 > /tmp/heap-$UUID
}
_setHeap 0

function _spawn() {
    export MYTHID=$HEAP
    daemonize $(which bash) -c "$1;"' HEAP=$(cat /tmp/heap-'$UUID'); echo $(($HEAP-1)) > /tmp/heap-'$UUID'; '
}
function _runLine() {
    HEAP=$(_getHeap)
    if [[ $HEAP -lt $(($TCAP+1)) ]]; then
        HEAP=$(_getHeap)
        echo "[debug] HEAP=$HEAP"
        _setHeap $(($HEAP+1))
        export MYTHID=$HEAP
        _spawn "$1"
    else
        echo "[info] Should wait..."
        sleep 0.5
        _runLine $1
    fi
}

function SC_act() {
    sed -i "s/ /_87Dk38DA7df68_/g" commands
    COUNT=0
    for Line in $(cat commands); do
        COUNT=$(($COUNT+1))
        sleep 0.5
        LINE=${Line//_87Dk38DA7df68_/ }
        _runLine "$LINE"
    done

    rm /tmp/heap-$UUID
    sed -i "s/_87Dk38DA7df68_/ /g" commands
}

case $1 in
    act)
        SC_$1
esac