def main():
program = Program()
cs_id = 0
random.seed()
while True:
try:
filename = input("Program name: ")
file = open(filename, 'r')
break
except FileNotFoundError:
print("File not found!")
program.number_of_processes = int(input("Number of processes: "))
tables.memory = int(input("Memory Size: "))
instructions = []
for line in file:
if line == 'EXE':
break
elif 'Name: ' in line:
program.name = line.split(' ', 1)[1].splitlines()[0]
elif 'Total runtime: ' in line:
program.runtime = int(line.split(': ')[1])
elif 'Memory: ' in line:
program.memory = int(line.split(': ')[1])
elif line != '\n':
current_line = line.split()
if "CRITICAL BEGIN" in line:
begin_idx = len(instructions)
cs = CriticalSection(cs_id, begin_idx)
program.critical_sections.append(cs)
tables.critical_sections[cs.id] = cs
instructions.append(Instruction("CRITICAL BEGIN", cs_id))
cs_id += 1
elif "CRITICAL END" in line:
end_idx = len(instructions)
for cs in program.critical_sections:
if cs.id == cs_id - 1:
cs.end_idx = end_idx
instructions.append(Instruction("CRITICAL END", cs.id))
tables.critical_sections[cs.id].end_idx = end_idx
break
elif len(current_line) == 1:
instructions.append(Instruction(current_line[0], 0))
else:
instructions.append(
Instruction(current_line[0], int(current_line[1])))
program.instructions = instructions
missing_end_tags = 0
for cs in program.critical_sections:
if cs.end_idx == -1:
missing_end_tags += 1
if missing_end_tags > 0:
print(
f'{missing_end_tags} critical section(s) are missing \'CRITICAL END\' commands'
)
exit()
print(f'Program loaded: {program.name}({program.number_of_processes})')
processes = [
Process(copy.deepcopy(program), pid)
for pid in range(program.number_of_processes)
]
print('Randomizing...')
for process in processes:
# random.shuffle(process.program.instructions)
for instruction in\
(instruction for instruction in process.program.instructions if instruction.command == 'CALCULATE'):
instruction.value = random.randint(
math.floor(instruction.value / 2), instruction.value * 2)
pcbs = [PCB(process) for process in processes]
for pcb in pcbs:
pcb.process.pcb = pcb
for pcb in pcbs:
print(f'------Process {pcb.process.pid}------')
for instruction in pcb.process.program.instructions:
print(f'{instruction.command}: {instruction.value}')
print(f'---------------------')
input('Press enter/return to start execution...')
dispatcher = Dispatcher()
scheduler = Scheduler(dispatcher)
dispatcher.connect_scheduler(scheduler)
scheduler.start()
tables.PCBs = pcbs
scheduler.pcb_lock.set()
gui = ProcessGUI()
gui.start()
scheduler.run_thread.join()
