382 lines
12 KiB
Python
382 lines
12 KiB
Python
"""Support for remote Python debugging.
|
|
|
|
Some ASCII art to describe the structure:
|
|
|
|
IN PYTHON SUBPROCESS # IN IDLE PROCESS
|
|
#
|
|
# oid='gui_adapter'
|
|
+----------+ # +------------+ +-----+
|
|
| GUIProxy |--remote#call-->| GUIAdapter |--calls-->| GUI |
|
|
+-----+--calls-->+----------+ # +------------+ +-----+
|
|
| Idb | # /
|
|
+-----+<-calls--+------------+ # +----------+<--calls-/
|
|
| IdbAdapter |<--remote#call--| IdbProxy |
|
|
+------------+ # +----------+
|
|
oid='idb_adapter' #
|
|
|
|
The purpose of the Proxy and Adapter classes is to translate certain
|
|
arguments and return values that cannot be transported through the RPC
|
|
barrier, in particular frame and traceback objects.
|
|
|
|
"""
|
|
|
|
import sys
|
|
import types
|
|
import rpc
|
|
import Debugger
|
|
|
|
debugging = 0
|
|
|
|
idb_adap_oid = "idb_adapter"
|
|
gui_adap_oid = "gui_adapter"
|
|
|
|
#=======================================
|
|
#
|
|
# In the PYTHON subprocess:
|
|
|
|
frametable = {}
|
|
dicttable = {}
|
|
codetable = {}
|
|
tracebacktable = {}
|
|
|
|
def wrap_frame(frame):
|
|
fid = id(frame)
|
|
frametable[fid] = frame
|
|
return fid
|
|
|
|
def wrap_info(info):
|
|
"replace info[2], a traceback instance, by its ID"
|
|
if info is None:
|
|
return None
|
|
else:
|
|
traceback = info[2]
|
|
assert isinstance(traceback, types.TracebackType)
|
|
traceback_id = id(traceback)
|
|
tracebacktable[traceback_id] = traceback
|
|
modified_info = (info[0], info[1], traceback_id)
|
|
return modified_info
|
|
|
|
class GUIProxy:
|
|
|
|
def __init__(self, conn, gui_adap_oid):
|
|
self.conn = conn
|
|
self.oid = gui_adap_oid
|
|
|
|
def interaction(self, message, frame, info=None):
|
|
# calls rpc.SocketIO.remotecall() via run.MyHandler instance
|
|
# pass frame and traceback object IDs instead of the objects themselves
|
|
self.conn.remotecall(self.oid, "interaction",
|
|
(message, wrap_frame(frame), wrap_info(info)),
|
|
{})
|
|
|
|
class IdbAdapter:
|
|
|
|
def __init__(self, idb):
|
|
self.idb = idb
|
|
|
|
#----------called by an IdbProxy----------
|
|
|
|
def set_step(self):
|
|
self.idb.set_step()
|
|
|
|
def set_quit(self):
|
|
self.idb.set_quit()
|
|
|
|
def set_continue(self):
|
|
self.idb.set_continue()
|
|
|
|
def set_next(self, fid):
|
|
frame = frametable[fid]
|
|
self.idb.set_next(frame)
|
|
|
|
def set_return(self, fid):
|
|
frame = frametable[fid]
|
|
self.idb.set_return(frame)
|
|
|
|
def get_stack(self, fid, tbid):
|
|
##print >>sys.__stderr__, "get_stack(%r, %r)" % (fid, tbid)
|
|
frame = frametable[fid]
|
|
if tbid is None:
|
|
tb = None
|
|
else:
|
|
tb = tracebacktable[tbid]
|
|
stack, i = self.idb.get_stack(frame, tb)
|
|
##print >>sys.__stderr__, "get_stack() ->", stack
|
|
stack = [(wrap_frame(frame), k) for frame, k in stack]
|
|
##print >>sys.__stderr__, "get_stack() ->", stack
|
|
return stack, i
|
|
|
|
def run(self, cmd):
|
|
import __main__
|
|
self.idb.run(cmd, __main__.__dict__)
|
|
|
|
def set_break(self, filename, lineno):
|
|
msg = self.idb.set_break(filename, lineno)
|
|
return msg
|
|
|
|
def clear_break(self, filename, lineno):
|
|
msg = self.idb.clear_break(filename, lineno)
|
|
return msg
|
|
|
|
def clear_all_file_breaks(self, filename):
|
|
msg = self.idb.clear_all_file_breaks(filename)
|
|
return msg
|
|
|
|
#----------called by a FrameProxy----------
|
|
|
|
def frame_attr(self, fid, name):
|
|
frame = frametable[fid]
|
|
return getattr(frame, name)
|
|
|
|
def frame_globals(self, fid):
|
|
frame = frametable[fid]
|
|
dict = frame.f_globals
|
|
did = id(dict)
|
|
dicttable[did] = dict
|
|
return did
|
|
|
|
def frame_locals(self, fid):
|
|
frame = frametable[fid]
|
|
dict = frame.f_locals
|
|
did = id(dict)
|
|
dicttable[did] = dict
|
|
return did
|
|
|
|
def frame_code(self, fid):
|
|
frame = frametable[fid]
|
|
code = frame.f_code
|
|
cid = id(code)
|
|
codetable[cid] = code
|
|
return cid
|
|
|
|
#----------called by a CodeProxy----------
|
|
|
|
def code_name(self, cid):
|
|
code = codetable[cid]
|
|
return code.co_name
|
|
|
|
def code_filename(self, cid):
|
|
code = codetable[cid]
|
|
return code.co_filename
|
|
|
|
#----------called by a DictProxy----------
|
|
|
|
def dict_keys(self, did):
|
|
dict = dicttable[did]
|
|
return dict.keys()
|
|
|
|
def dict_item(self, did, key):
|
|
dict = dicttable[did]
|
|
value = dict[key]
|
|
value = repr(value)
|
|
return value
|
|
|
|
#----------end class IdbAdapter----------
|
|
|
|
|
|
def start_debugger(rpchandler, gui_adap_oid):
|
|
"""Start the debugger and its RPC link in the Python subprocess
|
|
|
|
Start the subprocess side of the split debugger and set up that side of the
|
|
RPC link by instantiating the GUIProxy, Idb debugger, and IdbAdapter
|
|
objects and linking them together. Register the IdbAdapter with the
|
|
RPCServer to handle RPC requests from the split debugger GUI via the
|
|
IdbProxy.
|
|
|
|
"""
|
|
gui_proxy = GUIProxy(rpchandler, gui_adap_oid)
|
|
idb = Debugger.Idb(gui_proxy)
|
|
idb_adap = IdbAdapter(idb)
|
|
rpchandler.register(idb_adap_oid, idb_adap)
|
|
return idb_adap_oid
|
|
|
|
|
|
#=======================================
|
|
#
|
|
# In the IDLE process:
|
|
|
|
|
|
class FrameProxy:
|
|
|
|
def __init__(self, conn, fid):
|
|
self._conn = conn
|
|
self._fid = fid
|
|
self._oid = "idb_adapter"
|
|
self._dictcache = {}
|
|
|
|
def __getattr__(self, name):
|
|
if name[:1] == "_":
|
|
raise AttributeError, name
|
|
if name == "f_code":
|
|
return self._get_f_code()
|
|
if name == "f_globals":
|
|
return self._get_f_globals()
|
|
if name == "f_locals":
|
|
return self._get_f_locals()
|
|
return self._conn.remotecall(self._oid, "frame_attr",
|
|
(self._fid, name), {})
|
|
|
|
def _get_f_code(self):
|
|
cid = self._conn.remotecall(self._oid, "frame_code", (self._fid,), {})
|
|
return CodeProxy(self._conn, self._oid, cid)
|
|
|
|
def _get_f_globals(self):
|
|
did = self._conn.remotecall(self._oid, "frame_globals",
|
|
(self._fid,), {})
|
|
return self._get_dict_proxy(did)
|
|
|
|
def _get_f_locals(self):
|
|
did = self._conn.remotecall(self._oid, "frame_locals",
|
|
(self._fid,), {})
|
|
return self._get_dict_proxy(did)
|
|
|
|
def _get_dict_proxy(self, did):
|
|
if self._dictcache.has_key(did):
|
|
return self._dictcache[did]
|
|
dp = DictProxy(self._conn, self._oid, did)
|
|
self._dictcache[did] = dp
|
|
return dp
|
|
|
|
|
|
class CodeProxy:
|
|
|
|
def __init__(self, conn, oid, cid):
|
|
self._conn = conn
|
|
self._oid = oid
|
|
self._cid = cid
|
|
|
|
def __getattr__(self, name):
|
|
if name == "co_name":
|
|
return self._conn.remotecall(self._oid, "code_name",
|
|
(self._cid,), {})
|
|
if name == "co_filename":
|
|
return self._conn.remotecall(self._oid, "code_filename",
|
|
(self._cid,), {})
|
|
|
|
|
|
class DictProxy:
|
|
|
|
def __init__(self, conn, oid, did):
|
|
self._conn = conn
|
|
self._oid = oid
|
|
self._did = did
|
|
|
|
def keys(self):
|
|
return self._conn.remotecall(self._oid, "dict_keys", (self._did,), {})
|
|
|
|
def __getitem__(self, key):
|
|
return self._conn.remotecall(self._oid, "dict_item",
|
|
(self._did, key), {})
|
|
|
|
def __getattr__(self, name):
|
|
##print >>sys.__stderr__, "failed DictProxy.__getattr__:", name
|
|
raise AttributeError, name
|
|
|
|
|
|
class GUIAdapter:
|
|
|
|
def __init__(self, conn, gui):
|
|
self.conn = conn
|
|
self.gui = gui
|
|
|
|
def interaction(self, message, fid, modified_info):
|
|
##print "interaction: (%s, %s, %s)" % (message, fid, modified_info)
|
|
frame = FrameProxy(self.conn, fid)
|
|
self.gui.interaction(message, frame, modified_info)
|
|
|
|
|
|
class IdbProxy:
|
|
|
|
def __init__(self, conn, shell, oid):
|
|
self.oid = oid
|
|
self.conn = conn
|
|
self.shell = shell
|
|
|
|
def call(self, methodname, *args, **kwargs):
|
|
##print "**IdbProxy.call %s %s %s" % (methodname, args, kwargs)
|
|
value = self.conn.remotecall(self.oid, methodname, args, kwargs)
|
|
##print "**IdbProxy.call %s returns %r" % (methodname, value)
|
|
return value
|
|
|
|
def run(self, cmd, locals):
|
|
# Ignores locals on purpose!
|
|
seq = self.conn.asyncqueue(self.oid, "run", (cmd,), {})
|
|
self.shell.interp.active_seq = seq
|
|
|
|
def get_stack(self, frame, tbid):
|
|
# passing frame and traceback IDs, not the objects themselves
|
|
stack, i = self.call("get_stack", frame._fid, tbid)
|
|
stack = [(FrameProxy(self.conn, fid), k) for fid, k in stack]
|
|
return stack, i
|
|
|
|
def set_continue(self):
|
|
self.call("set_continue")
|
|
|
|
def set_step(self):
|
|
self.call("set_step")
|
|
|
|
def set_next(self, frame):
|
|
self.call("set_next", frame._fid)
|
|
|
|
def set_return(self, frame):
|
|
self.call("set_return", frame._fid)
|
|
|
|
def set_quit(self):
|
|
self.call("set_quit")
|
|
|
|
def set_break(self, filename, lineno):
|
|
msg = self.call("set_break", filename, lineno)
|
|
return msg
|
|
|
|
def clear_break(self, filename, lineno):
|
|
msg = self.call("clear_break", filename, lineno)
|
|
return msg
|
|
|
|
def clear_all_file_breaks(self, filename):
|
|
msg = self.call("clear_all_file_breaks", filename)
|
|
return msg
|
|
|
|
def start_remote_debugger(rpcclt, pyshell):
|
|
"""Start the subprocess debugger, initialize the debugger GUI and RPC link
|
|
|
|
Request the RPCServer start the Python subprocess debugger and link. Set
|
|
up the Idle side of the split debugger by instantiating the IdbProxy,
|
|
debugger GUI, and debugger GUIAdapter objects and linking them together.
|
|
|
|
Register the GUIAdapter with the RPCClient to handle debugger GUI
|
|
interaction requests coming from the subprocess debugger via the GUIProxy.
|
|
|
|
The IdbAdapter will pass execution and environment requests coming from the
|
|
Idle debugger GUI to the subprocess debugger via the IdbProxy.
|
|
|
|
"""
|
|
global idb_adap_oid
|
|
|
|
idb_adap_oid = rpcclt.remotecall("exec", "start_the_debugger",\
|
|
(gui_adap_oid,), {})
|
|
idb_proxy = IdbProxy(rpcclt, pyshell, idb_adap_oid)
|
|
gui = Debugger.Debugger(pyshell, idb_proxy)
|
|
gui_adap = GUIAdapter(rpcclt, gui)
|
|
rpcclt.register(gui_adap_oid, gui_adap)
|
|
return gui
|
|
|
|
def close_remote_debugger(rpcclt):
|
|
"""Shut down subprocess debugger and Idle side of debugger RPC link
|
|
|
|
Request that the RPCServer shut down the subprocess debugger and link.
|
|
Unregister the GUIAdapter, which will cause a GC on the Idle process
|
|
debugger and RPC link objects. (The second reference to the debugger GUI
|
|
is deleted in PyShell.close_remote_debugger().)
|
|
|
|
"""
|
|
close_subprocess_debugger(rpcclt)
|
|
rpcclt.unregister(gui_adap_oid)
|
|
|
|
def close_subprocess_debugger(rpcclt):
|
|
rpcclt.remotecall("exec", "stop_the_debugger", (idb_adap_oid,), {})
|
|
|
|
def restart_subprocess_debugger(rpcclt):
|
|
idb_adap_oid_ret = rpcclt.remotecall("exec", "start_the_debugger",\
|
|
(gui_adap_oid,), {})
|
|
assert idb_adap_oid_ret == idb_adap_oid, 'Idb restarted with different oid'
|