#include <stdlib.h>
#include <string.h>
#include "SchedTaskList.h"
#include "SchedTask.h"
#include "SchedNop2Ready.h"
#include "DmaManager.h"
#include "error.h"

/**
 * SchedTaskList を返す
 *
 * @param[in] next_list 次の実行する TaskList のアドレス
 * @param[in] next_list がメインメモリのアドレスか、
 *            SPE で生成されたアドレスかのフラグ
 *            SPE で生成されている場合、DMA の必要は無い
 *            0: メインメモリ, 1: SPE
 */
SchedTaskList*
createSchedTaskList(uint32 next_list, Scheduler* scheduler, int renew_flag)
{
    SchedTaskList* sched = new SchedTaskList(next_list, scheduler);
    sched->flag_renewTaskList = renew_flag;
    return sched;
}

SchedTaskList::SchedTaskList(unsigned int addr, Scheduler *sched)
{
    params_addr = addr;
    list = NULL;
    scheduler = sched;

    flag_renewTaskList = 0;
}


void
SchedTaskList::read(void)
{
    __debug("[SchedTaskList:%s]\n", __FUNCTION__);

    if (flag_renewTaskList == SCHED_TASKLIST_NORMAL) {
	list = scheduler->get_curListBuf();
	scheduler->dma_load(list, params_addr,
			    sizeof(TaskList), DMA_READ_TASKLIST);
    } else {
	list = (TaskListPtr)params_addr;
    }
}

SchedTaskBase*
SchedTaskList::next(Scheduler *m, SchedTaskBase *p)
{
    SchedTaskBase *nextSched;

    __debug("[SchedTaskList:%s]\n", __FUNCTION__);

    delete p;

    scheduler->dma_wait(DMA_READ_TASKLIST);

    if (list->length < 1) {
	nextSched = new SchedNop2Ready(scheduler);

	if (flag_renewTaskList == SCHED_TASKLIST_RENEW) {
	    free(list);
	}

    } else {
	TaskPtr nextTask = &list->tasks[0];
	nextSched = createSchedTask(nextTask);

	if (flag_renewTaskList == SCHED_TASKLIST_RENEW) {
	    ((SchedTask*)nextSched)->__setRenew();
	}
	
	((SchedTask*)nextSched)->__init__(list, nextTask, 1,
					  scheduler->get_curReadBuf(),
					  scheduler->get_curWriteBuf(),
					  scheduler);
    }

    return nextSched;
}