//----------------------------------------------------------------------------//
//                           GNU GPL OS/K                                     //
//                                                                            //
//  Desc:  RTC Time  related functions                                        //
//                                                                            //
//                                                                            //
//  Copyright © 2018-2019 The OS/K Team                                       //
//                                                                            //
//  This file is part of OS/K.                                                //
//                                                                            //
//  OS/K is free software: you can redistribute it and/or modify              //
//  it under the terms of the GNU General Public License as published by      //
//  the Free Software Foundation, either version 3 of the License, or         //
//  any later version.                                                        //
//                                                                            //
//  OS/K 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.                              //
//                                                                            //
//  You should have received a copy of the GNU General Public License         //
//  along with OS/K.  If not, see <https://www.gnu.org/licenses/>.            //
//----------------------------------------------------------------------------//

#include <lib/buf.h>
#include <ke/time.h>
#include <ke/idt.h>

#define COUNTDONE 1

static TimerFilo_t timerFilo[20]; //20 concurrent sleep max

//
// ISR handler for the Programmable Interval Timer
//
static void HandleTimer(ISRFrame_t *regs)
{
    for (uchar i = 0; i < 20; i++) {
        if (timerFilo[i].countDown > 0) {
            timerFilo[i].countDown--;

            if (timerFilo[i].countDown == 0)
                i; //XXX SendMessage a message to timerFifo[i].sema that COUNTDONE;
        }
    }
}

static TimerFilo_t* KeFindTimerBlock(void)
{
    for(uchar i = 0; i < 20; i++) {
        if (timerFilo[i].countDown == 0)
            return &timerFilo[i];
    }

    return NULL;
}

void KeSleep(uint delay)
{
    struct TimerFilo_t *timerBlock;

    if ((timerBlock = (TimerFilo_t*)KeFindTimerBlock()) == NULL)
        return;

    timerBlock->countDown = delay;
    // wait for a message on timerFifo[i].sema
}