def __del__(self):
"""
Don't keep the process as a zombie if it isn't running anymore."""
try:
if util.get_state_code_of_pid(self.pid) in ('Z', ''):
os.waitpid(self.pid, 0)
except OSError:
pass
def update_list():
# Update programs dict
#print("Checking which programs are alive...")
for name, program in RUNNING_PROGRAMS.items():
if not program.is_alive():
del RUNNING_PROGRAMS[name]
#print("\t%s is terminated, removed." % name)
else:
pass
#print("\t%s is still alive, leaving alone." % name)
# Get log files
directory = '%s/process_info' % common.ENV['VINEYARDPATH']
program_list = sorted(os.listdir(directory))
# Run through list of process info files and get the ones that aren't running anymore
#print("Checking which info files are obsolete and adding still running programs...")
old_programs = []
pids_of_users_processes = util.get_pids_of_user_processes()
for info_name in program_list:
if info_name not in RUNNING_PROGRAMS:
discard = True
# Get the info contained in the info file
info = get_program_info(info_name)
if 'pid' in info and info['pid'] in pids_of_users_processes:
# If the process with this PID was started at the same time
# as our the process info's says, they are the same
# process.
# The matching of start time is done +-3 seconds
# to account for any differences in logging between Vineyard
# and the system.
#print("We have a process with PID %s in our logs, checking if it's alive and ours..." % info['pid'])
pid_stime = util.get_start_time_of_pid(info['pid'])
if pid_stime != None:
(pid_stime_month, pid_stime_day,
pid_stime_hour, pid_stime_minute, pid_stime_second) = pid_stime
our_stime = _get_start_time_from_program_info(info)
(our_stime_month, our_stime_day,
our_stime_hour, our_stime_minute, our_stime_second) = our_stime
if (
pid_stime_month == 0 and
pid_stime_hour == our_stime_hour and
pid_stime_minute == our_stime_minute and
(
pid_stime_second == our_stime_second or
pid_stime_second == our_stime_second-1 or
pid_stime_second == our_stime_second+1 or
pid_stime_second == our_stime_second-2 or
pid_stime_second == our_stime_second+2 or
pid_stime_second == our_stime_second-3 or
pid_stime_second == our_stime_second+3
)
) or (
pid_stime_month == our_stime_month and
pid_stime_day == our_stime_day
):
#print("PID %s is ours." % info['pid'])
if util.get_state_code_of_pid(info['pid']) in ('Z', ''):
# This process is a zombie, let it rest in peace
#print("Let PID %s die." % info['pid'])
try:
os.waitpid(info['pid'], 0)
except OSError:
# Already exited
pass
else:
# This process is alive, add it to the list
RUNNING_PROGRAMS[info_name] = AdoptedProgram(info)
discard = False
if discard:
old_programs.append(info_name)
# Remove the info files that aren't running and are more than is to be kept
#print("Cleaning up old info files...")
for info_name in old_programs[:-5]:
try:
#print("\t%s is no longer needed, removing...")
os.remove('%s/%s' % (directory, info_name))
except OSError:
print("Couldn't remove process info file \"%s\"." % info_name, file=sys.stderr)
def is_alive(self):
return (util.get_state_code_of_pid(self.pid) not in ('X', 'Z', ''))
