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Edit File : debugger_r.py \| Size : 11.86 KB
"""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 types from idlelib 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): frame = frametable[fid] if tbid is None: tb = None else: tb = tracebacktable[tbid] stack, i = self.idb.get_stack(frame, tb) stack = [(wrap_frame(frame2), k) for frame2, k in 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): raise NotImplementedError("dict_keys not public or pickleable") ## dict = dicttable[did] ## return dict.keys() ### Needed until dict_keys is type is finished and pickealable. ### Will probably need to extend rpc.py:SocketIO._proxify at that time. def dict_keys_list(self, did): dict = dicttable[did] return list(dict.keys()) def dict_item(self, did, key): dict = dicttable[did] value = dict[key] value = repr(value) ### can't pickle module 'builtins' 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 did in self._dictcache: 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,), {}) # 'temporary' until dict_keys is a pickleable built-in type def keys(self): return self._conn.remotecall(self._oid, "dict_keys_list", (self._did,), {}) def __getitem__(self, key): return self._conn.remotecall(self._oid, "dict_item", (self._did, key), {}) def __getattr__(self, name): ##print("* 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' if __name__ == "__main__": from unittest import main main('idlelib.idle_test.test_debugger', verbosity=2, exit=False) Back

Edit File : debugger_r.py | Size : 11.86 KB

"""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 types
from idlelib 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):
        frame = frametable[fid]
        if tbid is None:
            tb = None
        else:
            tb = tracebacktable[tbid]
        stack, i = self.idb.get_stack(frame, tb)
        stack = [(wrap_frame(frame2), k) for frame2, k in 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):
        raise NotImplementedError("dict_keys not public or pickleable")
##         dict = dicttable[did]
##         return dict.keys()

### Needed until dict_keys is type is finished and pickealable.
    ### Will probably need to extend rpc.py:SocketIO._proxify at that time.
    def dict_keys_list(self, did):
        dict = dicttable[did]
        return list(dict.keys())

def dict_item(self, did, key):
        dict = dicttable[did]
        value = dict[key]
        value = repr(value) ### can't pickle module 'builtins'
        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 did in self._dictcache:
            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,), {})

# 'temporary' until dict_keys is a pickleable built-in type
    def keys(self):
        return self._conn.remotecall(self._oid,
                                     "dict_keys_list", (self._did,), {})

def __getitem__(self, key):
        return self._conn.remotecall(self._oid, "dict_item",
                                     (self._did, key), {})

def __getattr__(self, name):
        ##print("*** 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'

if __name__ == "__main__":
    from unittest import main
    main('idlelib.idle_test.test_debugger', verbosity=2, exit=False)

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