def __init__(self, sock):
from ptvsd.adapter import sessions
self.server = None
"""The Server component, if this debug server belongs to Session.
"""
self.pid = None
stream = messaging.JsonIOStream.from_socket(sock, str(self))
self.channel = messaging.JsonMessageChannel(stream, self)
self.channel.start()
try:
info = self.channel.request("pydevdSystemInfo")
process_info = info("process", json.object())
self.pid = process_info("pid", int)
self.ppid = process_info("ppid", int, optional=True)
if self.ppid == ():
self.ppid = None
self.channel.name = stream.name = str(self)
with _lock:
if any(conn.pid == self.pid for conn in _connections):
raise KeyError(
fmt("{0} is already connected to this adapter", self))
_connections.append(self)
_connections_changed.set()
except Exception:
log.exception("Failed to accept incoming server connection:")
# If we couldn't retrieve all the necessary info from the debug server,
# or there's a PID clash, we don't want to track this debuggee anymore,
# but we want to continue accepting connections.
self.channel.close()
return
parent_session = sessions.get(self.ppid)
if parent_session is None:
log.info("No active debug session for parent process of {0}.",
self)
else:
try:
parent_session.ide.notify_of_subprocess(self)
except Exception:
# This might fail if the IDE concurrently disconnects from the parent
# session. We still want to keep the connection around, in case the
# IDE reconnects later. If the parent session was "launch", it'll take
# care of closing the remaining server connections.
log.exception("Failed to notify parent session about {0}:",
self)
def __init__(self, sock):
from ptvsd.adapter import sessions
self.disconnected = False
self.server = None
"""The Server component, if this debug server belongs to Session.
"""
self.pid = None
stream = messaging.JsonIOStream.from_socket(sock, str(self))
self.channel = messaging.JsonMessageChannel(stream, self)
self.channel.start()
try:
self.authenticate()
info = self.channel.request("pydevdSystemInfo")
process_info = info("process", json.object())
self.pid = process_info("pid", int)
self.ppid = process_info("ppid", int, optional=True)
if self.ppid == ():
self.ppid = None
self.channel.name = stream.name = str(self)
ptvsd_dir = os.path.dirname(os.path.dirname(ptvsd.__file__))
# Note: we must check if 'ptvsd' is not already in sys.modules because the
# evaluation of an import at the wrong time could deadlock Python due to
# its import lock.
#
# So, in general this evaluation shouldn't do anything. It's only
# important when pydevd attaches automatically to a subprocess. In this
# case, we have to make sure that ptvsd is properly put back in the game
# for users to be able to use it.v
#
# In this case (when the import is needed), this evaluation *must* be done
# before the configurationDone request is sent -- if this is not respected
# it's possible that pydevd already started secondary threads to handle
# commands, in which case it's very likely that this command would be
# evaluated at the wrong thread and the import could potentially deadlock
# the program.
#
# Note 2: the sys module is guaranteed to be in the frame globals and
# doesn't need to be imported.
inject_ptvsd = """
if 'ptvsd' not in sys.modules:
sys.path.insert(0, {ptvsd_dir!r})
try:
import ptvsd
finally:
del sys.path[0]
"""
inject_ptvsd = fmt(inject_ptvsd, ptvsd_dir=ptvsd_dir)
try:
self.channel.request("evaluate", {"expression": inject_ptvsd})
except messaging.MessageHandlingError:
# Failure to inject is not a fatal error - such a subprocess can
# still be debugged, it just won't support "import ptvsd" in user
# code - so don't terminate the session.
log.exception("Failed to inject ptvsd into {0}:",
self,
level="warning")
with _lock:
# The server can disconnect concurrently before we get here, e.g. if
# it was force-killed. If the disconnect() handler has already run,
# don't register this server or report it, since there's nothing to
# deregister it.
if self.disconnected:
return
if any(conn.pid == self.pid for conn in _connections):
raise KeyError(
fmt("{0} is already connected to this adapter", self))
_connections.append(self)
_connections_changed.set()
except Exception:
log.exception("Failed to accept incoming server connection:")
self.channel.close()
# If this was the first server to connect, and the main thread is inside
# wait_until_disconnected(), we want to unblock it and allow it to exit.
dont_wait_for_first_connection()
# If we couldn't retrieve all the necessary info from the debug server,
# or there's a PID clash, we don't want to track this debuggee anymore,
# but we want to continue accepting connections.
return
parent_session = sessions.get(self.ppid)
if parent_session is None:
log.info("No active debug session for parent process of {0}.",
self)
else:
try:
parent_session.ide.notify_of_subprocess(self)
except Exception:
# This might fail if the IDE concurrently disconnects from the parent
# session. We still want to keep the connection around, in case the
# IDE reconnects later. If the parent session was "launch", it'll take
# care of closing the remaining server connections.
log.exception("Failed to notify parent session about {0}:",
self)