def _init_shm(self, retro_run_id):
if self.system != 'Snes':
self.shm = None
return
##### Set up the shared memory segment ##################################################
# currently only supports Snes
# Set the identifier that the SNES C code may use to create a shared memory segment
if retro_run_id is None:
self.retro_run_id = random.randint(1, 1 << 30)
else:
self.retro_run_id = retro_run_id
os.environ['RETRO_RUN_ID'] = f"{self.retro_run_id}"
self.shm_key = self.retro_run_id
shm_size = VISITED_BUFFER_SIZE * WORD_SIZE # enough to hold 2^15 16-bit words
try:
self.shm = ipc.SharedMemory(self.shm_key,
flags=ipc.IPC_CREX,
mode=0o666,
size=shm_size)
except Exception as e: # FIXME tighten this except up
shm = ipc.SharedMemory(self.shm_key, 0, 0)
ipc.remove_shared_memory(shm.id)
self.shm = ipc.SharedMemory(self.shm_key,
flags=ipc.IPC_CREX,
mode=0o666,
size=shm_size)
return
def Disconnect(self):
try:
self._shm.detach()
sysv_ipc.remove_shared_memory(self._shm.id)
except:
pass
finally:
self.SetConnectionState(False)
def test_remove_shared_memory(self):
"""Exercise remove_shared_memory()"""
mem = sysv_ipc.SharedMemory(None, sysv_ipc.IPC_CREX)
sysv_ipc.remove_shared_memory(mem.id)
with self.assertRaises(sysv_ipc.ExistentialError):
sysv_ipc.SharedMemory(mem.key)
def __del__(self):
# Remove shared memory only if the owner/creator
#
if self._is_creator:
# Debating function vs SharedMemory method; I've
# seen it done both ways
if self._memory and self._memory.id:
sysv_ipc.remove_shared_memory(self._memory.id)
#self._memory.remove()
# Otherwise, just detach from the shared memory segment
#
elif self._memory:
self._memory.detach()
def Process(self):
# I seed the shared memory with a random value which is the current time.
what_i_wrote = time.asctime()
s = what_i_wrote
#utils.write_to_memory(self.Memory, what_i_wrote)
utils.say("iteration %d" % self.Cntr)
self.Cntr += 1
if not self.Params["LIVE_DANGEROUSLY"]:
# Releasing the semaphore...
utils.say("releasing the semaphore")
self.Semaphore.release()
utils.say("acquiring the semaphore...")
self.Semaphore.acquire()
self.DispatchMsg(utils.read_from_memory(self.Memory))
if self.State == "IDLE":
pass
elif self.State == "INCR":
pass
elif self.State == "DECR":
pass
elif self.State == "QUIT":
if not self.Params["LIVE_DANGEROUSLY"]:
utils.say(
"Final release of the semaphore followed by a 5 second pause"
)
self.Semaphore.release()
time.sleep(5)
# ...before beginning to wait until it is free again.
utils.say("Final acquisition of the semaphore")
self.Semaphore.acquire()
utils.say("Destroying semaphore and shared memory")
# It'd be more natural to call memory.remove() and semaphore.remove() here,
# but I'll use the module-level functions instead to demonstrate their use.
sysv_ipc.remove_shared_memory(self.Memory.id)
sysv_ipc.remove_semaphore(self.Semaphore.id)
else:
sysv_ipc.remove_shared_memory(self.Memory.id)
sysv_ipc.remove_semaphore(self.Semaphore.id)
def __del__(self):
if self.shm is not None:
ipc.remove_shared_memory(self.shm.id)
# What I read must be the md5 of what I wrote or something's gone wrong.
what_i_wrote = what_i_wrote.encode()
try:
assert(s == hashlib.md5(what_i_wrote).hexdigest())
except AssertionError:
raise AssertionError("Shared memory corruption after %d iterations." % i)
# MD5 the reply and write back to Mrs. Conclusion.
s = s.encode()
what_i_wrote = hashlib.md5(s).hexdigest()
utils.write_to_memory(memory, what_i_wrote)
# Announce for one last time that the semaphore is free again so that
# Mrs. Conclusion can exit.
if not params["LIVE_DANGEROUSLY"]:
utils.say("Final release of the semaphore followed by a 5 second pause")
semaphore.release()
time.sleep(5)
# ...before beginning to wait until it is free again.
utils.say("Final acquisition of the semaphore")
semaphore.acquire()
utils.say("Destroying semaphore and shared memory")
# It'd be more natural to call memory.remove() and semaphore.remove() here,
# but I'll use the module-level functions instead to demonstrate their use.
sysv_ipc.remove_shared_memory(memory.id)
sysv_ipc.remove_semaphore(semaphore.id)
what_i_wrote = what_i_wrote.encode()
try:
assert(s == hashlib.md5(what_i_wrote).hexdigest())
except AssertionError:
flex_utils.raise_error(AssertionError,
"Shared memory corruption after %d iterations." % i)
# MD5 the reply and write back to Mrs. Conclusion.
if PY_MAJOR_VERSION > 2:
s = s.encode()
what_i_wrote = hashlib.md5(s).hexdigest()
utils.write_to_memory(memory, what_i_wrote)
# Announce for one last time that the semaphore is free again so that
# Mrs. Conclusion can exit.
if not params["LIVE_DANGEROUSLY"]:
utils.say("Final release of the semaphore followed by a 5 second pause")
semaphore.release()
time.sleep(5)
# ...before beginning to wait until it is free again.
utils.say("Final acquisition of the semaphore")
semaphore.acquire()
utils.say("Destroying semaphore and shared memory")
# It'd be more natural to call memory.remove() and semaphore.remove() here,
# but I'll use the module-level functions instead to demonstrate their use.
sysv_ipc.remove_shared_memory(memory.id)
sysv_ipc.remove_semaphore(semaphore.id)
def Cleanup(self):
sysv_ipc.remove_shared_memory(self.Memory.id)
sysv_ipc.remove_semaphore(self.Semaphore.id)
def main():
# instacia das variaveis globais
global counter
global shutdown
global fanPort
global minFanUpTime
global refreshRate
global maxTemp
global minTemp
global channel_id
global write_key
global tskrefresh
global lastUpdate
global channel
global isRelay
global onValue
global offValue
global useSocCmd
# Carrega as configura??es
(fanPort,minFanUpTime,refreshRate,maxTemp,minTemp,channel_id,write_key,tskrefresh,isRelay,useSocCmd) = configs.loadConfig()
if(isRelay):
onValue = 0
offValue = 1
else:
onValue = 1
offValue = 0
if(channel_id != -1):
channel = thingspeak.Channel(id=channel_id,write_key=write_key)
parser = optparse.OptionParser()
parser.add_option("-v", "--version", action="store_true", dest="version",
help="Show the software version.", default = False)
parser.add_option("-c", "--config", action="store_true", dest="config",
help="Generates a default config file. WARNING: this can overwrite existing settings file.", default = False)
parser.add_option("--reloadConf", action="store_true", dest="reload",
help="Reloads the config file to apply changes.", default = False)
group = optparse.OptionGroup(parser, "Controll Options")
group.add_option("-f", "--force", type="string", nargs = 1, dest="force",
help="force the fan to be always ON/OFF", default = "null")
group.add_option("-r", "--restore", action="store_true", dest="restore",
help="restore the fan to auto mode", default = False)
parser.add_option_group(group)
group = optparse.OptionGroup(parser, "Status Options")
group.add_option("-a", "--appear", action="store_true", dest="appear",
help="force run even if a process is already running", default=False)
group.add_option("-s", "--status", action="store_true", dest="fanstatus",
help="show if the fan is ON/OFF", default=False)
group.add_option("-t", "--temp", action="store_true", dest="temp",
help="shows the current temperature", default=False)
parser.add_option_group(group)
group = optparse.OptionGroup(parser, "Installation Options")
group.add_option("--install", action="store_true", dest="install",
help="makes 'fan' command available to bash command line", default=False)
group.add_option("--uninstall", action="store_true", dest="uninstall",
help="uninstall 'fan' command from bash command line", default=False)
group.add_option("--autoinit", type="string", nargs = 1, dest="autoinit",
help="sets the auto init true/false, if true the process will start at boot up", default = "null")
parser.add_option_group(group)
group = optparse.OptionGroup(parser, "Dangerous Options","Use this options with caution.")
group.add_option("--clear", action="store_true", dest="clear",
help="free shared memory, this may cause some stability issues, try using '--restore' after using this option.", default = False)
parser.add_option_group(group)
(options, args) = parser.parse_args()
# para o processo caso o computador comece a desligar
signal.signal(signal.SIGTERM, stop)
if(options.reload):
try:
configReload = sysv_ipc.SharedMemory(19021999) #procura a memoria compartilhada
utils.write_to_memory(configReload,"reload")
print("The configuration was reloaded.")
except:
print("Fail to reload the configuration.")
sys.exit()
elif(options.config):
try:
configs.createConfig()
print('Config file created.')
except:
print('Fail to create the config file.')
sys.exit()
elif(options.version):
print("Fan version: %s" % (version))
sys.exit()
elif(options.clear):
try:
setGPIO()
fanForce = sysv_ipc.SharedMemory(22061995)
sysv_ipc.remove_shared_memory(fanForce.id)
print("Memory Cleared.")
except:
print("There was no memory to clear.")
GPIO.cleanup(fanPort)
print("GPIO Cleared.")
sys.exit()
elif(options.install):
try:
installFan()
print("'fan' was installed to the command line.")
except:
print("Fail to install 'fan' to the command line.")
sys.exit()
elif(options.uninstall):
try:
os.remove("/usr/local/bin/fan")
print("'fan' was removed from command line.")
except:
print("Fail to remove 'fan' from command line.")
sys.exit()
elif(options.autoinit == "true"):
try:
installAutoInit()
print("Autoinit set to True, restart your system apply changes.")
except:
print("Fail to set Autoinit to True.")
sys.exit()
elif(options.autoinit == "false"):
try:
uninstallAutoInit()
print("Autoinit set to False")
except:
print("Fail to set Autoinit to False.")
sys.exit()
elif(options.autoinit != "null"):
print("Invalid parameter.")
print("")
print("Usage: --autoinit [true/false]")
sys.exit()
# se receber o comando -a forca abrir uma instancia nova
elif (options.appear):
setGPIO()
# desliga a fan
GPIO.output(fanPort,offValue)
elif(options.force == "on"):
try:
fanForce = sysv_ipc.SharedMemory(22061995) #procura a memoria compartilhada
utils.write_to_memory(fanForce,"on")
setGPIO()
GPIO.output(fanPort,onValue)
print("The Fan was forced to be on.")
except:
print("Fail forcing fan to be on.")
sys.exit()
elif(options.force == "off"):
try:
fanForce = sysv_ipc.SharedMemory(22061995) #procura a memoria compartilhada
utils.write_to_memory(fanForce,"off")
setGPIO()
GPIO.output(fanPort,offValue)
print("The Fan was forced to be off. WARNING: The fan will not auto turn on anymore.")
except:
print("Fail forcing fan to be off.")
sys.exit()
elif(options.force != "null"):
print("Invalid parameter.")
print("")
print("Usage: --force [on/off]")
sys.exit()
elif(options.restore):
try:
fanForce = sysv_ipc.SharedMemory(22061995) #procura a memoria compartilhada
utils.write_to_memory(fanForce,"default")
print("The Fan was restored to auto-mode.")
except:
print("The Fan was restored to auto-mode.")
sys.exit()
elif(options.fanstatus):
setGPIO()
if(GPIO.input(fanPort) == offValue):
print("The fan is inactive.")
else:
print("The fan is active.")
sys.exit()
elif(options.temp):
print ("Temperature: %0.2f 'C" % (getTemp()))
sys.exit()
else:
parser.error("fan requires an argument.")
quit()
try:
fanForce = sysv_ipc.SharedMemory(22061995,sysv_ipc.IPC_CREX) #cria memoria compartilhada
configReload = sysv_ipc.SharedMemory(19021999,sysv_ipc.IPC_CREX) #cria memoria compartilhada
except:
fanForce = sysv_ipc.SharedMemory(22061995) #cria memoria compartilhada
configReload = sysv_ipc.SharedMemory(19021999) #cria memoria compartilhada
utils.write_to_memory(fanForce,"default")
utils.write_to_memory(configReload,"default")
try:
while (shutdown == False):
# descobre se a fan esta ligada
status = GPIO.input(fanPort)
# se receber um comando de force via console para de rodar
if(utils.read_from_memory(fanForce) == "default"):
# se a temperatura for maior ou igual a maxTemp graus liga a fan
if (getTemp() >= maxTemp):
if(status == offValue):
# liga a fan
GPIO.output(fanPort,onValue)
# envia o status para o thingspeak
k=0
# aguarda o tempo minimo de execucao da fan
while(k < minFanUpTime and shutdown == False):
# se receber um comando de controle de fan sai da espera
if(utils.read_from_memory(fanForce) == "default"):
# envia o status para o thingspeak
updateThingspeak()
if(utils.read_from_memory(configReload) == "reload"):
reloadConfigs()
utils.write_to_memory(configReload,"default")
time.sleep(1)
k+=1
else:
break
counter=0
else:
updateThingspeak()
if(utils.read_from_memory(configReload) == "reload"):
reloadConfigs()
utils.write_to_memory(configReload,"default")
time.sleep(refreshRate)#apos o tempo minimo ele aguarda o tempo de refresh hate definido
counter=0
# se estiver no limite da transicao aguarda 2x o refresh rate para desligar a fan, assim evitando liga e desliga de fan
elif (counter < 2):
counter += 1
time.sleep(refreshRate)
elif (minTemp < getTemp()):
counter = 0
updateThingspeak()
if(utils.read_from_memory(configReload) == "reload"):
reloadConfigs()
utils.write_to_memory(configReload,"default")
else:
if(status == onValue):
GPIO.output(fanPort,offValue)
updateThingspeak()
if(utils.read_from_memory(configReload) == "reload"):
reloadConfigs()
utils.write_to_memory(configReload,"default")
time.sleep(refreshRate)
else:
updateThingspeak()
if(utils.read_from_memory(configReload) == "reload"):
reloadConfigs()
utils.write_to_memory(configReload,"default")
time.sleep(refreshRate)
except KeyboardInterrupt:
pass
finally:
GPIO.cleanup(fanPort)
sysv_ipc.remove_shared_memory(fanForce.id)
sysv_ipc.remove_shared_memory(configReload.id)
def __del__(self):
try:
self._shm.detach()
sysv_ipc.remove_shared_memory(self._shm.id)
except:
pass