mirror of https://github.com/python/cpython
Reindent properly.
This commit is contained in:
Gregory P. Smith ext:(%20%5BGoogle%20Inc.%5D)
parent
cef1f83c71
commit
1bb8109fe3
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@ -540,87 +540,85 @@ class UDPServer(TCPServer):
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pass
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if hasattr(os, "fork"):
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# Non-standard indentation on this statement to avoid reindenting the body.
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class ForkingMixIn:
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class ForkingMixIn:
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"""Mix-in class to handle each request in a new process."""
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"""Mix-in class to handle each request in a new process."""
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timeout = 300
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active_children = None
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max_children = 40
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timeout = 300
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active_children = None
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max_children = 40
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def collect_children(self):
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"""Internal routine to wait for children that have exited."""
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if self.active_children is None:
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return
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# If we're above the max number of children, wait and reap them until
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# we go back below threshold. Note that we use waitpid(-1) below to be
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# able to collect children in size(<defunct children>) syscalls instead
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# of size(<children>): the downside is that this might reap children
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# which we didn't spawn, which is why we only resort to this when we're
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# above max_children.
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while len(self.active_children) >= self.max_children:
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try:
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pid, _ = os.waitpid(-1, 0)
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self.active_children.discard(pid)
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except ChildProcessError:
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# we don't have any children, we're done
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self.active_children.clear()
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except OSError:
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break
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# Now reap all defunct children.
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for pid in self.active_children.copy():
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try:
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pid, _ = os.waitpid(pid, os.WNOHANG)
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# if the child hasn't exited yet, pid will be 0 and ignored by
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# discard() below
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self.active_children.discard(pid)
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except ChildProcessError:
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# someone else reaped it
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self.active_children.discard(pid)
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except OSError:
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pass
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def handle_timeout(self):
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"""Wait for zombies after self.timeout seconds of inactivity.
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May be extended, do not override.
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"""
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self.collect_children()
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def service_actions(self):
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"""Collect the zombie child processes regularly in the ForkingMixIn.
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service_actions is called in the BaseServer's serve_forver loop.
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"""
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self.collect_children()
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def process_request(self, request, client_address):
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"""Fork a new subprocess to process the request."""
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pid = os.fork()
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if pid:
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# Parent process
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def collect_children(self):
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"""Internal routine to wait for children that have exited."""
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if self.active_children is None:
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self.active_children = set()
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self.active_children.add(pid)
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self.close_request(request)
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return
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else:
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# Child process.
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# This must never return, hence os._exit()!
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status = 1
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try:
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self.finish_request(request, client_address)
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status = 0
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except Exception:
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self.handle_error(request, client_address)
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finally:
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return
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# If we're above the max number of children, wait and reap them until
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# we go back below threshold. Note that we use waitpid(-1) below to be
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# able to collect children in size(<defunct children>) syscalls instead
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# of size(<children>): the downside is that this might reap children
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# which we didn't spawn, which is why we only resort to this when we're
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# above max_children.
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while len(self.active_children) >= self.max_children:
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try:
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self.shutdown_request(request)
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pid, _ = os.waitpid(-1, 0)
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self.active_children.discard(pid)
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except ChildProcessError:
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# we don't have any children, we're done
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self.active_children.clear()
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except OSError:
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break
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# Now reap all defunct children.
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for pid in self.active_children.copy():
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try:
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pid, _ = os.waitpid(pid, os.WNOHANG)
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# if the child hasn't exited yet, pid will be 0 and ignored by
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# discard() below
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self.active_children.discard(pid)
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except ChildProcessError:
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# someone else reaped it
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self.active_children.discard(pid)
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except OSError:
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pass
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def handle_timeout(self):
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"""Wait for zombies after self.timeout seconds of inactivity.
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May be extended, do not override.
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"""
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self.collect_children()
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def service_actions(self):
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"""Collect the zombie child processes regularly in the ForkingMixIn.
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service_actions is called in the BaseServer's serve_forver loop.
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"""
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self.collect_children()
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def process_request(self, request, client_address):
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"""Fork a new subprocess to process the request."""
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pid = os.fork()
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if pid:
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# Parent process
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if self.active_children is None:
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self.active_children = set()
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self.active_children.add(pid)
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self.close_request(request)
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return
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else:
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# Child process.
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# This must never return, hence os._exit()!
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status = 1
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try:
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self.finish_request(request, client_address)
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status = 0
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except Exception:
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self.handle_error(request, client_address)
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finally:
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os._exit(status)
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try:
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self.shutdown_request(request)
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finally:
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os._exit(status)
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class ThreadingMixIn:
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