Mercurial > cpython-lru_cache-weakref
annotate Lib/idlelib/RemoteDebugger.py @ 80661:94de77bd0b4b 2.7
Issue #16194: document imp.load_dynamic problems
when read several extension modules from the same binary object file.
| author | Andrew Svetlov <andrew.svetlov@gmail.com> |
|---|---|
| date | Thu, 29 Nov 2012 19:51:28 +0200 |
| parents | b36cb4602e21 |
| children |
| rev | line source |
|---|---|
| 23547 | 1 """Support for remote Python debugging. |
| 2 | |
| 3 Some ASCII art to describe the structure: | |
| 4 | |
| 5 IN PYTHON SUBPROCESS # IN IDLE PROCESS | |
| 6 # | |
| 7 # oid='gui_adapter' | |
| 8 +----------+ # +------------+ +-----+ | |
| 9 | GUIProxy |--remote#call-->| GUIAdapter |--calls-->| GUI | | |
| 10 +-----+--calls-->+----------+ # +------------+ +-----+ | |
| 11 | Idb | # / | |
| 12 +-----+<-calls--+------------+ # +----------+<--calls-/ | |
| 13 | IdbAdapter |<--remote#call--| IdbProxy | | |
| 14 +------------+ # +----------+ | |
| 15 oid='idb_adapter' # | |
| 16 | |
| 17 The purpose of the Proxy and Adapter classes is to translate certain | |
| 18 arguments and return values that cannot be transported through the RPC | |
| 19 barrier, in particular frame and traceback objects. | |
| 20 | |
| 21 """ | |
| 22 | |
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23 import types |
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24 from idlelib import rpc |
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25 from idlelib import Debugger |
| 23547 | 26 |
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27 debugging = 0 |
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28 |
| 25123 | 29 idb_adap_oid = "idb_adapter" |
| 30 gui_adap_oid = "gui_adapter" | |
| 31 | |
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32 #======================================= |
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33 # |
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34 # In the PYTHON subprocess: |
| 23547 | 35 |
| 36 frametable = {} | |
| 37 dicttable = {} | |
| 38 codetable = {} | |
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39 tracebacktable = {} |
| 23547 | 40 |
| 41 def wrap_frame(frame): | |
| 42 fid = id(frame) | |
| 43 frametable[fid] = frame | |
| 44 return fid | |
| 45 | |
| 46 def wrap_info(info): | |
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47 "replace info[2], a traceback instance, by its ID" |
| 23547 | 48 if info is None: |
| 49 return None | |
| 50 else: | |
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51 traceback = info[2] |
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52 assert isinstance(traceback, types.TracebackType) |
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53 traceback_id = id(traceback) |
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54 tracebacktable[traceback_id] = traceback |
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55 modified_info = (info[0], info[1], traceback_id) |
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56 return modified_info |
| 23547 | 57 |
| 58 class GUIProxy: | |
| 59 | |
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60 def __init__(self, conn, gui_adap_oid): |
| 23547 | 61 self.conn = conn |
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62 self.oid = gui_adap_oid |
| 23547 | 63 |
| 64 def interaction(self, message, frame, info=None): | |
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65 # calls rpc.SocketIO.remotecall() via run.MyHandler instance |
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66 # pass frame and traceback object IDs instead of the objects themselves |
| 23547 | 67 self.conn.remotecall(self.oid, "interaction", |
| 68 (message, wrap_frame(frame), wrap_info(info)), | |
| 69 {}) | |
| 70 | |
| 71 class IdbAdapter: | |
| 72 | |
| 73 def __init__(self, idb): | |
| 74 self.idb = idb | |
| 75 | |
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76 #----------called by an IdbProxy---------- |
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77 |
| 23547 | 78 def set_step(self): |
| 79 self.idb.set_step() | |
| 80 | |
| 81 def set_quit(self): | |
| 82 self.idb.set_quit() | |
| 83 | |
| 84 def set_continue(self): | |
| 85 self.idb.set_continue() | |
| 86 | |
| 87 def set_next(self, fid): | |
| 88 frame = frametable[fid] | |
| 89 self.idb.set_next(frame) | |
| 90 | |
| 91 def set_return(self, fid): | |
| 92 frame = frametable[fid] | |
| 93 self.idb.set_return(frame) | |
| 94 | |
| 95 def get_stack(self, fid, tbid): | |
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96 ##print >>sys.__stderr__, "get_stack(%r, %r)" % (fid, tbid) |
| 23547 | 97 frame = frametable[fid] |
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98 if tbid is None: |
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99 tb = None |
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100 else: |
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101 tb = tracebacktable[tbid] |
| 23547 | 102 stack, i = self.idb.get_stack(frame, tb) |
| 103 ##print >>sys.__stderr__, "get_stack() ->", stack | |
| 104 stack = [(wrap_frame(frame), k) for frame, k in stack] | |
| 105 ##print >>sys.__stderr__, "get_stack() ->", stack | |
| 106 return stack, i | |
| 107 | |
| 108 def run(self, cmd): | |
| 109 import __main__ | |
| 110 self.idb.run(cmd, __main__.__dict__) | |
| 111 | |
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112 def set_break(self, filename, lineno): |
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113 msg = self.idb.set_break(filename, lineno) |
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114 return msg |
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115 |
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116 def clear_break(self, filename, lineno): |
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117 msg = self.idb.clear_break(filename, lineno) |
| 25123 | 118 return msg |
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119 |
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120 def clear_all_file_breaks(self, filename): |
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121 msg = self.idb.clear_all_file_breaks(filename) |
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122 return msg |
| 26959 | 123 |
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124 #----------called by a FrameProxy---------- |
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125 |
| 23547 | 126 def frame_attr(self, fid, name): |
| 127 frame = frametable[fid] | |
| 128 return getattr(frame, name) | |
| 129 | |
| 130 def frame_globals(self, fid): | |
| 131 frame = frametable[fid] | |
| 132 dict = frame.f_globals | |
| 133 did = id(dict) | |
| 134 dicttable[did] = dict | |
| 135 return did | |
| 136 | |
| 137 def frame_locals(self, fid): | |
| 138 frame = frametable[fid] | |
| 139 dict = frame.f_locals | |
| 140 did = id(dict) | |
| 141 dicttable[did] = dict | |
| 142 return did | |
| 143 | |
| 144 def frame_code(self, fid): | |
| 145 frame = frametable[fid] | |
| 146 code = frame.f_code | |
| 147 cid = id(code) | |
| 148 codetable[cid] = code | |
| 149 return cid | |
| 150 | |
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151 #----------called by a CodeProxy---------- |
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152 |
| 23547 | 153 def code_name(self, cid): |
| 154 code = codetable[cid] | |
| 155 return code.co_name | |
| 156 | |
| 157 def code_filename(self, cid): | |
| 158 code = codetable[cid] | |
| 159 return code.co_filename | |
| 160 | |
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161 #----------called by a DictProxy---------- |
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162 |
| 23547 | 163 def dict_keys(self, did): |
| 164 dict = dicttable[did] | |
| 165 return dict.keys() | |
| 166 | |
| 167 def dict_item(self, did, key): | |
| 168 dict = dicttable[did] | |
| 169 value = dict[key] | |
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170 value = repr(value) |
| 23547 | 171 return value |
| 172 | |
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173 #----------end class IdbAdapter---------- |
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174 |
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175 |
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176 def start_debugger(rpchandler, gui_adap_oid): |
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177 """Start the debugger and its RPC link in the Python subprocess |
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178 |
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179 Start the subprocess side of the split debugger and set up that side of the |
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180 RPC link by instantiating the GUIProxy, Idb debugger, and IdbAdapter |
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181 objects and linking them together. Register the IdbAdapter with the |
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182 RPCServer to handle RPC requests from the split debugger GUI via the |
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183 IdbProxy. |
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184 |
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185 """ |
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186 gui_proxy = GUIProxy(rpchandler, gui_adap_oid) |
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187 idb = Debugger.Idb(gui_proxy) |
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188 idb_adap = IdbAdapter(idb) |
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189 rpchandler.register(idb_adap_oid, idb_adap) |
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190 return idb_adap_oid |
| 23547 | 191 |
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192 |
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193 #======================================= |
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194 # |
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195 # In the IDLE process: |
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196 |
| 23547 | 197 |
| 198 class FrameProxy: | |
| 199 | |
| 200 def __init__(self, conn, fid): | |
| 201 self._conn = conn | |
| 202 self._fid = fid | |
| 203 self._oid = "idb_adapter" | |
| 204 self._dictcache = {} | |
| 205 | |
| 206 def __getattr__(self, name): | |
| 207 if name[:1] == "_": | |
| 208 raise AttributeError, name | |
| 209 if name == "f_code": | |
| 210 return self._get_f_code() | |
| 211 if name == "f_globals": | |
| 212 return self._get_f_globals() | |
| 213 if name == "f_locals": | |
| 214 return self._get_f_locals() | |
| 215 return self._conn.remotecall(self._oid, "frame_attr", | |
| 216 (self._fid, name), {}) | |
| 217 | |
| 218 def _get_f_code(self): | |
| 219 cid = self._conn.remotecall(self._oid, "frame_code", (self._fid,), {}) | |
| 220 return CodeProxy(self._conn, self._oid, cid) | |
| 221 | |
| 222 def _get_f_globals(self): | |
| 223 did = self._conn.remotecall(self._oid, "frame_globals", | |
| 224 (self._fid,), {}) | |
| 225 return self._get_dict_proxy(did) | |
| 226 | |
| 227 def _get_f_locals(self): | |
| 228 did = self._conn.remotecall(self._oid, "frame_locals", | |
| 229 (self._fid,), {}) | |
| 230 return self._get_dict_proxy(did) | |
| 231 | |
| 232 def _get_dict_proxy(self, did): | |
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233 if did in self._dictcache: |
| 23547 | 234 return self._dictcache[did] |
| 235 dp = DictProxy(self._conn, self._oid, did) | |
| 236 self._dictcache[did] = dp | |
| 237 return dp | |
| 238 | |
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239 |
| 23547 | 240 class CodeProxy: |
| 241 | |
| 242 def __init__(self, conn, oid, cid): | |
| 243 self._conn = conn | |
| 244 self._oid = oid | |
| 245 self._cid = cid | |
| 246 | |
| 247 def __getattr__(self, name): | |
| 248 if name == "co_name": | |
| 249 return self._conn.remotecall(self._oid, "code_name", | |
| 250 (self._cid,), {}) | |
| 251 if name == "co_filename": | |
| 252 return self._conn.remotecall(self._oid, "code_filename", | |
| 253 (self._cid,), {}) | |
| 254 | |
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255 |
| 23547 | 256 class DictProxy: |
| 257 | |
| 258 def __init__(self, conn, oid, did): | |
| 259 self._conn = conn | |
| 260 self._oid = oid | |
| 261 self._did = did | |
| 262 | |
| 263 def keys(self): | |
| 264 return self._conn.remotecall(self._oid, "dict_keys", (self._did,), {}) | |
| 265 | |
| 266 def __getitem__(self, key): | |
| 267 return self._conn.remotecall(self._oid, "dict_item", | |
| 268 (self._did, key), {}) | |
| 269 | |
| 270 def __getattr__(self, name): | |
| 271 ##print >>sys.__stderr__, "failed DictProxy.__getattr__:", name | |
| 272 raise AttributeError, name | |
| 273 | |
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274 |
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275 class GUIAdapter: |
| 23547 | 276 |
| 277 def __init__(self, conn, gui): | |
| 278 self.conn = conn | |
| 279 self.gui = gui | |
| 280 | |
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281 def interaction(self, message, fid, modified_info): |
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282 ##print "interaction: (%s, %s, %s)" % (message, fid, modified_info) |
| 23547 | 283 frame = FrameProxy(self.conn, fid) |
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284 self.gui.interaction(message, frame, modified_info) |
| 23547 | 285 |
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286 |
| 23547 | 287 class IdbProxy: |
| 288 | |
| 27379 | 289 def __init__(self, conn, shell, oid): |
| 23547 | 290 self.oid = oid |
| 291 self.conn = conn | |
| 27379 | 292 self.shell = shell |
| 23547 | 293 |
| 294 def call(self, methodname, *args, **kwargs): | |
| 27379 | 295 ##print "**IdbProxy.call %s %s %s" % (methodname, args, kwargs) |
| 23547 | 296 value = self.conn.remotecall(self.oid, methodname, args, kwargs) |
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297 ##print "**IdbProxy.call %s returns %r" % (methodname, value) |
| 23547 | 298 return value |
| 299 | |
| 300 def run(self, cmd, locals): | |
| 301 # Ignores locals on purpose! | |
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302 seq = self.conn.asyncqueue(self.oid, "run", (cmd,), {}) |
| 27379 | 303 self.shell.interp.active_seq = seq |
| 23547 | 304 |
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305 def get_stack(self, frame, tbid): |
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306 # passing frame and traceback IDs, not the objects themselves |
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307 stack, i = self.call("get_stack", frame._fid, tbid) |
| 23547 | 308 stack = [(FrameProxy(self.conn, fid), k) for fid, k in stack] |
| 309 return stack, i | |
| 310 | |
| 311 def set_continue(self): | |
| 312 self.call("set_continue") | |
| 313 | |
| 314 def set_step(self): | |
| 315 self.call("set_step") | |
| 316 | |
| 317 def set_next(self, frame): | |
| 318 self.call("set_next", frame._fid) | |
| 319 | |
| 320 def set_return(self, frame): | |
| 321 self.call("set_return", frame._fid) | |
| 322 | |
| 323 def set_quit(self): | |
| 324 self.call("set_quit") | |
| 325 | |
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326 def set_break(self, filename, lineno): |
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327 msg = self.call("set_break", filename, lineno) |
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328 return msg |
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329 |
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330 def clear_break(self, filename, lineno): |
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331 msg = self.call("clear_break", filename, lineno) |
| 25123 | 332 return msg |
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333 |
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334 def clear_all_file_breaks(self, filename): |
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335 msg = self.call("clear_all_file_breaks", filename) |
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336 return msg |
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337 |
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338 def start_remote_debugger(rpcclt, pyshell): |
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339 """Start the subprocess debugger, initialize the debugger GUI and RPC link |
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340 |
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341 Request the RPCServer start the Python subprocess debugger and link. Set |
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342 up the Idle side of the split debugger by instantiating the IdbProxy, |
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343 debugger GUI, and debugger GUIAdapter objects and linking them together. |
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344 |
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345 Register the GUIAdapter with the RPCClient to handle debugger GUI |
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346 interaction requests coming from the subprocess debugger via the GUIProxy. |
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347 |
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348 The IdbAdapter will pass execution and environment requests coming from the |
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349 Idle debugger GUI to the subprocess debugger via the IdbProxy. |
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350 |
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351 """ |
| 25123 | 352 global idb_adap_oid |
| 353 | |
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354 idb_adap_oid = rpcclt.remotecall("exec", "start_the_debugger",\ |
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355 (gui_adap_oid,), {}) |
| 27379 | 356 idb_proxy = IdbProxy(rpcclt, pyshell, idb_adap_oid) |
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357 gui = Debugger.Debugger(pyshell, idb_proxy) |
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358 gui_adap = GUIAdapter(rpcclt, gui) |
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359 rpcclt.register(gui_adap_oid, gui_adap) |
| 23547 | 360 return gui |
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361 |
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362 def close_remote_debugger(rpcclt): |
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363 """Shut down subprocess debugger and Idle side of debugger RPC link |
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364 |
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365 Request that the RPCServer shut down the subprocess debugger and link. |
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366 Unregister the GUIAdapter, which will cause a GC on the Idle process |
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367 debugger and RPC link objects. (The second reference to the debugger GUI |
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368 is deleted in PyShell.close_remote_debugger().) |
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369 |
| 26959 | 370 """ |
| 25123 | 371 close_subprocess_debugger(rpcclt) |
| 372 rpcclt.unregister(gui_adap_oid) | |
| 373 | |
| 374 def close_subprocess_debugger(rpcclt): | |
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375 rpcclt.remotecall("exec", "stop_the_debugger", (idb_adap_oid,), {}) |
| 25123 | 376 |
| 377 def restart_subprocess_debugger(rpcclt): | |
| 378 idb_adap_oid_ret = rpcclt.remotecall("exec", "start_the_debugger",\ | |
| 379 (gui_adap_oid,), {}) | |
| 380 assert idb_adap_oid_ret == idb_adap_oid, 'Idb restarted with different oid' |