def occupy_empty_area(number_of_words):
''' find given number of words in user memory and marks them read.
Returns None if occupation was not possible
Returns array of real addresses.
'''
addresses = []
recov = []
enough = True
block = USER_STARTING_BLOCK
word = 0
i = 0
while len(addresses) != number_of_words:
if memory[block][word] == []:
addresses.append(processor.to_hex(block * BLOCK_SIZE + word))
memory[block][word] = 'X'
recov.append([block, word])
word += 1
if word == BLOCK_SIZE:
block += 1
word = 0
if block == USER_ENDING_BLOCK:
# recover occupied areas
for addr in recov:
memory[addr[0]][addr[1]] = []
return None
i += 1
logger.log("Addreses occupied: " + str(addresses))
return addresses
def occupy_empty_area(number_of_words):
''' find given number of words in user memory and marks them read.
Returns None if occupation was not possible
Returns array of real addresses.
'''
addresses = []
recov = []
enough = True
block = USER_STARTING_BLOCK
word = 0
i = 0
while len(addresses) != number_of_words:
if memory[block][word] == []:
addresses.append(processor.to_hex(block * BLOCK_SIZE + word))
memory[block][word] = 'X'
recov.append([block, word])
word += 1
if word == BLOCK_SIZE:
block += 1
word = 0
if block == USER_ENDING_BLOCK:
# recover occupied areas
for addr in recov:
memory[addr[0]][addr[1]] = []
return None
i += 1
logger.log("Addreses occupied: " + str(addresses))
return addresses
def run(self):
''' execute user task until interrupt is encountered '''
self.update()
command = user_memory.fetch(self.ic)
if command[0:2] == 'LA':
self.LA(command[2:4])
elif command[0:2] == 'LB':
self.LB(command[2:4])
elif command[0:2] == 'MA':
self.MA(command[2:4])
elif command[0:2] == 'MB':
self.MB(command[2:4])
elif command[0:2] == 'WS':
self.WS(command[2:4])
elif command[0:2] == 'LS':
self.LS(command[2:4])
elif command[0:2] == 'JM':
self.JM(command[2:4])
elif command[0:2] == 'JL':
self.JL(command[2:4])
elif command[0:2] == 'JE':
self.JE(command[2:4])
elif command[0:2] == 'PD':
pass
elif command[0:3] == 'ADD':
self.ADD()
elif command[0:3] == 'SUB':
self.SUB()
elif command[0:3] == 'CMP':
self.CMP()
elif command[0:3] == 'END':
self.END()
return
elif command == 'SWAP':
self.SWAP()
elif command == 'AXOR':
self.AXOR()
elif command == 'BXOR':
self.BXOR()
else:
processor.pi = 2
kernel.create_resource(InterruptEvent, self, {'process' : self, 'message' : str(command) })
self.state = configs.BLOCKED_STATE
kernel.schedule()
return
logger.log("COMMAND EVALUATED: " + command)
logger.log("TIME IS : " + str(processor.time))
self.update_time(2)
if self.time_is_over():
processor.ti = 1
kernel.create_resource(InterruptEvent, self, {'process' : self, 'message' : None })
self.state = configs.BLOCKED_STATE
kernel.schedule()
def run(self):
''' execute user task until interrupt is encountered '''
self.update()
command = user_memory.fetch(self.ic)
if command[0:2] == 'LA':
self.LA(command[2:4])
elif command[0:2] == 'LB':
self.LB(command[2:4])
elif command[0:2] == 'MA':
self.MA(command[2:4])
elif command[0:2] == 'MB':
self.MB(command[2:4])
elif command[0:2] == 'WS':
self.WS(command[2:4])
elif command[0:2] == 'LS':
self.LS(command[2:4])
elif command[0:2] == 'JM':
self.JM(command[2:4])
elif command[0:2] == 'JL':
self.JL(command[2:4])
elif command[0:2] == 'JE':
self.JE(command[2:4])
elif command[0:2] == 'PD':
pass
elif command[0:3] == 'ADD':
self.ADD()
elif command[0:3] == 'SUB':
self.SUB()
elif command[0:3] == 'CMP':
self.CMP()
elif command[0:3] == 'END':
self.END()
return
elif command == 'SWAP':
self.SWAP()
elif command == 'AXOR':
self.AXOR()
elif command == 'BXOR':
self.BXOR()
else:
processor.pi = 2
kernel.create_resource(InterruptEvent, self, {
'process': self,
'message': str(command)
})
self.state = configs.BLOCKED_STATE
kernel.schedule()
return
logger.log("COMMAND EVALUATED: " + command)
logger.log("TIME IS : " + str(processor.time))
self.update_time(2)
if self.time_is_over():
processor.ti = 1
kernel.create_resource(InterruptEvent, self, {
'process': self,
'message': None
})
self.state = configs.BLOCKED_STATE
kernel.schedule()