Exemplo n.º 1
0
        /// <summary>
        /// 给定点,检测是否需要进行动态优化,并进行频率的动态调整
        /// </summary>
        /// <param name="index"></param>
        public void checkAndOpt_Dyn(int index)
        {
            LU lu = new LU();

            //succ(i)
            while(true)
            {
                lu = utilizationCompTime(index, this.vexs[index].pointPeriod);
                double laxity = 1 - lu.worseTime / this.vexs[index].pointPeriod;

                if (laxity >= lu.utilization || lu.k_index == lu.minT_index)
                    break;

                Console.WriteLine("laxity=" + laxity + " U=" + lu.utilization + " minT_index=" + lu.minT_index + 1 + " k_index=" + lu.k_index + 1);
                Console.WriteLine("check for point " + (index + 1));
                Console.WriteLine((lu.minT_index + 1) + "频率为" + this.vexs[lu.minT_index].pointPeriod + "动态调整加倍");
                Console.ReadKey();
                this.vexs[lu.minT_index].pointPeriod *= 2;
                MGraphUpdate(lu.minT_index);
            }
        }
Exemplo n.º 2
0
        public void checkAndOpt_UtiDyn(int index)
        {
            LU lu = new LU();

            lu = utilizationCompTime(index, this.vexs[index].pointPeriod);
        }
Exemplo n.º 3
0
        public LU utilizationCompTime(int index, int tk)
        {
            LU lu = new LU();

            bool noIncoming = true;
            List<int> candi = new List<int>(vexnum);
            for (int i = 0; i < vexnum; i++)
            {
                if (this.arcs[i, index].arcAdj == 1)
                {
                    noIncoming = false;
                    candi.Add(i);
                }
            }

            if (noIncoming)
            {
                lu.worseTime = this.vexs[index].pointComptime;
                lu.utilization = lu.worseTime / this.vexs[index].pointPeriod;
                lu.k_index = lu.minT_index = index;

                return lu;
            }
            else
            {
                LU minLU = new LU(0, 0);
                LU tLU = new LU();

                double tTime = 0;
                double tU = 0;
                for (int i = 0; i < candi.Count; i++)
                {
                    tTime = tk / (this.vexs[candi[i]].pointPeriod) * this.vexs[index].pointComptime + utilizationCompTime(candi[i], tk).worseTime;
                    tU = utilizationCompTime(candi[i], tk).utilization + this.vexs[candi[i]].pointComptime / this.vexs[candi[i]].pointPeriod;
                    tLU.worseTime = tTime;
                    tLU.utilization = tU;
                    tLU.k_index = index;
                    tLU.minT_index = (this.vexs[candi[i]].pointPeriod > this.vexs[index].pointPeriod) ? index : candi[i];

                    if (tLU.worseTime > minLU.worseTime)
                    {
                        minLU.worseTime = tLU.worseTime;
                        minLU.utilization = tLU.utilization;
                        minLU.minT_index = tLU.minT_index;
                        minLU.k_index = tLU.k_index;
                    }
                }

                return minLU;
            }
        }