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Fixed potential logging deadlock

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This commit is contained in:
Mark Qvist 2025-01-16 17:37:47 +01:00
parent b8aa6a3e44
commit a56d93fc1e
1 changed files with 27 additions and 33 deletions
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60
RNS/__init__.py
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@ -125,42 +125,36 @@ def log(msg, level=3, _override_destination = False, pt=False):
else:
logstring = "["+timestamp_str(time.time())+"] "+msg
logging_lock.acquire()
with logging_lock:
if (logdest == LOG_STDOUT or _always_override_destination or _override_destination):
print(logstring)
if (logdest == LOG_STDOUT or _always_override_destination or _override_destination):
print(logstring)
logging_lock.release()
elif (logdest == LOG_FILE and logfile != None):
try:
file = open(logfile, "a")
file.write(logstring+"\n")
file.close()
if os.path.getsize(logfile) > LOG_MAXSIZE:
prevfile = logfile+".1"
if os.path.isfile(prevfile):
os.unlink(prevfile)
os.rename(logfile, prevfile)
elif (logdest == LOG_FILE and logfile != None):
try:
file = open(logfile, "a")
file.write(logstring+"\n")
file.close()
if os.path.getsize(logfile) > LOG_MAXSIZE:
prevfile = logfile+".1"
if os.path.isfile(prevfile):
os.unlink(prevfile)
os.rename(logfile, prevfile)
except Exception as e:
_always_override_destination = True
log("Exception occurred while writing log message to log file: "+str(e), LOG_CRITICAL)
log("Dumping future log events to console!", LOG_CRITICAL)
log(msg, level)
logging_lock.release()
except Exception as e:
logging_lock.release()
_always_override_destination = True
log("Exception occurred while writing log message to log file: "+str(e), LOG_CRITICAL)
log("Dumping future log events to console!", LOG_CRITICAL)
log(msg, level)
elif logdest == LOG_CALLBACK:
try:
logcall(logstring)
logging_lock.release()
except Exception as e:
logging_lock.release()
_always_override_destination = True
log("Exception occurred while calling external log handler: "+str(e), LOG_CRITICAL)
log("Dumping future log events to console!", LOG_CRITICAL)
log(msg, level)
elif logdest == LOG_CALLBACK:
try:
logcall(logstring)
except Exception as e:
_always_override_destination = True
log("Exception occurred while calling external log handler: "+str(e), LOG_CRITICAL)
log("Dumping future log events to console!", LOG_CRITICAL)
log(msg, level)
def rand():