问题描述
如何修复甘特图以及平均等待时间和周转时间的计算方法。我遇到了问题，因为每次我运行它时，表都被弄乱了，平均值和总数都错了。我该怎么解决？
请帮助。该代码本来是可抢占的，但现在已成为优先级，我无法对其进行调整。
#!/usr/bin/env python
# coding: utf-8
# In[14]:
import os
import time
def findWaitingTime(processes,n,wt):
rt = [0] * n
# copy the burst time into rt[]
for i in range(n):
rt[i] = processes[0][i]
complete = 0
t = 0
minm = 999999999
short = 0
check = False
# Process until all processes gets
# completed
while (complete != n):
# Find process with minimum remaining
# time among the processes that
# arrives till the current time`
for j in range(n):
if ((processes[1][j] <= t) and
(rt[j] < minm) and rt[j] > 0):
minm = rt[j]
short = j
check = True
if (check == False):
t += 1
continue
# Reduce remaining time by one
rt[short] -= 1
# Update minimum
minm = rt[short]
if (minm == 0):
minm = 999999999
# If a process gets completely
# executed
if (rt[short] == 0):
# Increment complete
complete += 1
check = False
# Find finish time of current
# process
fint = t + 1
# Calculate waiting time
wt[short] = (fint - processes[0][short] -
processes[1][short])
if (wt[short] < 0):
wt[short] = 0
# Increment time
t += 1
# Function to calculate turn around time
def findTurnAroundTime(processes,wt,tat):
# Calculating turnaround time
for i in range(n):
tat[i] = processes[0][i] + wt[i]
def PriorityPreemptive(processes,n):
ArrivalTime = []
ArrivalStatus = []
waitingTime = 0
totalTime = 0
GanttChart = []
for i in range(0,n):
ArrivalTime.append(processes[1][i])
ArrivalStatus.append(False)
waitingTime -= (processes[0][i]+processes[1][i])
totalTime += processes[0][i]
smallestIndex = 0
smallestValue = totalTime
for i in range(0,totalTime):
smallestValue = totalTime
for j in range(0,n):
if i == ArrivalTime[j]:
ArrivalStatus[j] = True
for j in range(0,n):
if ArrivalStatus[j] and processes[0][j] < smallestValue and processes[0][j] != 0:
smallestValue = processes[0][j]
smallestIndex = j
GanttChart.append(smallestIndex+1)
processes[0][smallestIndex] -= 1
if processes[0][smallestIndex] == 0:
waitingTime += (i+1)
waitingTime /= n
return GanttChart
def printganttChart(processes,n):
print("\nGantt Chart")
#display Gantt Chart
gantt = []
chart = PriorityPreemptive(processes,n)
similar = 1
for i in range(len(chart[:-1])):
if chart[i] == chart[i + 1]:
similar += 1
else:
gantt.append(similar)
similar = 1
gantt.append(similar)
summary_process = []
for i in range(len(chart[:-1])):
if chart[i] != chart[i + 1]:
summary_process.append(f"P{chart[i]}")
summary_process.append(f"P{chart[i]}")
summary_chart = [0]
for process in gantt:
summary_chart.append(max(summary_chart) + process)
i=0
#printing top bar
print("\u250c",end='')
while i+1 <= len(summary_process):
j=0
while j < summary_chart[i+1] - summary_chart[i]:
print("\u2500\u2500",end='')
j+=1
if i+1 < len(summary_process):
print("\u252c",end='')
elif i+1 == len(summary_process):
print("\u2510",end='')
i+=1
print("\n\u2502",end='')
i=0
#middle position
while i+1 <= len(summary_process):
j=0
while j < summary_chart[i+1] - summary_chart[i] - 1:
print(" ",end='')
j+=1
print(summary_process[i],end='')
j=0
while j < summary_chart[i+1] - summary_chart[i] - 1:
print(" ",end='')
j+=1
print("\u2502",end='')
i+=1
print("\n",end='')
i=0
#printing bottom bar
print("\u2514",end='')
j+=1
if i+1 < len(summary_process):
print("\u2534",end='')
elif i+1 == len(summary_process):
print("\u2518",end='')
i+=1
i=0
#printing waiting time
print("\n{}".format(summary_chart[0]),end='')
while i+1 <= len(summary_process):
j=0
while j < summary_chart[i+1] - summary_chart[i] - 1:
print(" ",end='')
j+=1
print(" ",end='')
j=0
if summary_chart[i+1] < 100 and summary_chart[i+1] > 9:
j+=1
elif summary_chart[i+1] < 1000 and summary_chart[i+1] > 99:
j+=2
elif summary_chart[i+1] < 10000 and summary_chart[i+1] > 999:
j+=3
while j < summary_chart[i+1] - summary_chart[i] - 1:
print(" ",end='')
j+=1
print(summary_chart[i+1],end='')
i+=1
# Function to calculate average waiting
# and turn-around times.
def doremaining(processes,n):
wt = [0] * n
tat = [0] * n
# Function to find waiting time
# of all processes
findWaitingTime(processes,wt)
# Function to find turn around time
# for all processes
findTurnAroundTime(processes,tat)
#burst = processes[0];
#arrival = processes[1];
printganttChart(processes,n)
# display processes along with all details in table
print("\n\nTable")
print("\u250c",end='')
heading = ['PROCESS','TURNAROUND TIME','WAITING TIME']
a=0
while a < len(heading):
b=0
while b < len(heading[a]):
print("\u2500",end='')
b+=1
if a == 2:
print("\u2510",end='')
else:
print("\u252c",end='')
a+=1
print("\n\u2502",end='')
for i in heading:
print("{}\u2502".format(i),end='')
print("\n\u251c",end='')
a=0
while a < len(heading):
b=0
while b < len(heading[a]):
print("\u2500",end='')
b+=1
if a == 2:
print("\u2524",end='')
else:
print("\u253c",end='')
a+=1
print("\n",end='')
total_wt = 0
total_tat = 0
ctr = 1
for i in range(n):
total_wt = total_wt + wt[i]
total_tat = total_tat + tat[i]
print("\u2502 ","P{} \u2502".format(ctr)," {} ".format(tat[i]),end='')
if tat[i] > 99 and tat[i] < 1000:
print(" ",end='')
elif tat[i] > 9 and tat[i] < 100:
print(" ",end='')
elif tat[i] < 10:
print(" ",end='')
print("\u2502 {}".format(wt[i])," ",end='')
if wt[i] > 99 and wt[i] < 1000:
print(" ",end='')
elif wt[i] > 9 and wt[i] < 100:
print(" ",end='')
elif wt[i] < 10:
print(" ",end='')
print("\u2502")
ctr+=1
print("\u251c",end='')
print("\u2502 TOTAL \u2502 {} ".format(total_tat),end='')
if total_tat > 99 and total_tat < 1000:
print(" ",end='')
elif total_tat > 9 and total_tat < 100:
print(" ",end='')
elif total_tat < 10:
print(" ",end='')
print("\u2502 {} ".format(total_wt),end='')
if total_wt > 99 and total_wt < 1000:
print(" ",end='')
elif total_wt > 9 and total_wt < 100:
print(" ",end='')
elif total_wt < 10:
print(" ",end='')
print("\u2502")
print("\u251c",end='')
print("\u2502AVERAGE\u2502 {} ".format(total_tat/n),end='')
if len(str(total_tat/n)) == 6:
print(" ",end='')
elif len(str(total_tat/n)) == 5:
print(" ",end='')
elif len(str(total_tat/n)) == 4:
print(" ",end='')
elif len(str(total_tat/n)) == 3:
print(" ",end='')
print("\u2502 {} ".format(total_wt/n),end='')
if len(str(total_wt/n)) == 6:
print(" ",end='')
elif len(str(total_wt/n)) == 5:
print(" ",end='')
elif len(str(total_wt/n)) == 4:
print(" ",end='')
elif len(str(total_wt/n)) == 3:
print(" ",end='')
print("\u2502")
print("\u2514",end='')
b+=1
if a == 2:
print("\u2518",end='')
else:
print("\u2534",end='')
a+=1
def main():
print("Programmed by: Timothy Kyle B. Chan")
print("MP01 - Priority-Preemptive")
print("\nProgram reading input file....")
time.sleep(2)
print("input file: MP01_check.txt")
x = open('MP01_check.txt')
y = int(x.readline())
print("\nEnter No. of Processes: {}".format(y))
print("Arrival Time:")
z = []
i = 1
while i <= int(y):
z.append(int(x.readline()))
print("P{}: {}".format(i,z[i-1]))
i += 1
print("Burst Time:")
z2 = []
i = 1
while i <= int(y):
z2.append(int(x.readline()))
print("P{}: {}".format(i,z2[i-1]))
i += 1
print("Priority:")
z3 = []
i = 1
while i <= int(y):
z3.append(int(x.readline()))
print("P{}: {}".format(i,z3[i-1]))
i += 1
proc = [z3,z2,z]
doremaining(proc,y)
repeat()
def repeat():
print("\nDo you want to run again [y/n]:",end=' ')
iu = input()
if iu == 'y':
os.system('clear')
main()
elif iu == 'n':
os.system('pause')
else:
print("Please type only what is indicated inside the square brackets")
repeat()
main()
解决方法
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