| Server IP : 68.183.124.220 / Your IP : 216.73.217.137 Web Server : Apache/2.4.18 (Ubuntu) System : Linux Sandbox-A 4.4.0-210-generic #242-Ubuntu SMP Fri Apr 16 09:57:56 UTC 2021 x86_64 User : gavin ( 1000) PHP Version : 7.0.33-0ubuntu0.16.04.16 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority, MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON Directory : /usr/src/Python-3.6.8/Lib/test/subprocessdata/ |
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import signal, subprocess, sys, time
# On Linux this causes os.waitpid to fail with OSError as the OS has already
# reaped our child process. The wait() passing the OSError on to the caller
# and causing us to exit with an error is what we are testing against.
signal.signal(signal.SIGCHLD, signal.SIG_IGN)
subprocess.Popen([sys.executable, '-c', 'print("albatross")']).wait()
# Also ensure poll() handles an errno.ECHILD appropriately.
p = subprocess.Popen([sys.executable, '-c', 'print("albatross")'])
num_polls = 0
while p.poll() is None:
# Waiting for the process to finish.
time.sleep(0.01) # Avoid being a CPU busy loop.
num_polls += 1
if num_polls > 3000:
raise RuntimeError('poll should have returned 0 within 30 seconds')