[英]python process._sbootstrap() / .start()
How does python's multiprocessing.Process's start() method work. python的multiprocessing.Process的start()方法如何工作。 In particular, is there any documentation for Process._bootstrap() & if so where?
特别是,是否有有关Process._bootstrap()的任何文档?
I'm not sure you need to mess with _bootstrap. 我不确定您是否需要使用_bootstrap。 If you are looking for a basic idea on how to use the Process class, I would take a look at:
如果您正在寻找有关如何使用Process类的基本想法,那么我来看看:
Here's the code, straight from my Python 2.7 install: 这是直接来自我的Python 2.7安装的代码:
def _bootstrap(self):
from . import util
global _current_process
try:
self._children = set()
self._counter = itertools.count(1)
try:
sys.stdin.close()
sys.stdin = open(os.devnull)
except (OSError, ValueError):
pass
_current_process = self
util._finalizer_registry.clear()
util._run_after_forkers()
util.info('child process calling self.run()')
try:
self.run()
exitcode = 0
finally:
util._exit_function()
except SystemExit, e:
if not e.args:
exitcode = 1
elif type(e.args[0]) is int:
exitcode = e.args[0]
else:
sys.stderr.write(e.args[0] + '\n')
sys.stderr.flush()
exitcode = 1
except:
exitcode = 1
import traceback
sys.stderr.write('Process %s:\n' % self.name)
sys.stderr.flush()
traceback.print_exc()
util.info('process exiting with exitcode %d' % exitcode)
return exitcode
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