1、调用系统库 platform.system() 报错: 2、os.popen() 打开的文件流未关闭也会出现这种错误。 f = os.popen() f.read() f.close() 问题复现的场景:如果在主进程->开启一个子线程调用os.popen(),主进程会回收os.popen() 如果主进程--> 开启线程1 ,线程1开启一个线程2来调用os.popen(),主进程回收...
1、调用系统库 platform.system() 报错: 2、os.popen() 打开的文件流未关闭也会出现这种错误。 f = os.popen() f.read() f.close() 问题复现的场景:如果在主进程->开启一个子线程调用os.popen(),主进程会回收os.popen() 如果主进程--> 开启线程1 ,线程1开启一个线程2来调用os.popen(),主进程回收...
修改subprocess.py代码进行debug,发现wait()函数里调用os.waitpid() 出现了 [Errno 10] No child processes异常。 def wait(self): """Wait for child process to terminate. Returns returncode attribute.""" while self.returncode is None: try: pid, sts = _eintr_retry_call(os.waitpid, self.pid, ...
"OS error code 6: No such device or address" "OS error code 7: Argument list too long" "OS error code 8: Exec format error" "OS error code 9: Bad file descriptor" "OS error code 10: No child processes" "OS error code 11: Resource temporarily unavailable" "OS error code 12: Can...
"OS error code 6: No such device or address" "OS error code 7: Argument list too long" "OS error code 8: Exec format error" "OS error code 9: Bad file descriptor" "OS error code 10: No child processes" "OS error code 11: Resource temporarily unavailable" ...
When using multiple processes, no IOLoops can be created or referenced until after the call to ``fork_processes``. In each child process, ``fork_processes`` returns its *task id*, a number between 0 and ``num_processes``. Processes that exit ...
% (os.getpid(), os.getppid())) else: print('I (%s) just created a child p...
create child processes. Otherwise a daemonic process would leave its children orphaned if it gets terminated when its parent process exits. Additionally, these are not Unixdaemonsor services, they are normal processes that will be terminated (and not joined) if non-daemonic processes have exited....
Modern versions of at least Ubuntu and Arch have a patch that disallows ptracing of non-child processes by non-root users. You can disable this using echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope or runmemory_analyzeras root. ...
When using multiple processes, no IOLoops can be created or referenced until after the call to ``fork_processes``. In each child process, ``fork_processes`` returns its *task id*, a number between 0 and ``num_processes``. Processes that exit ...