Add shared-session MCP source debugger adapter

toolchain/sdbg_launcher.py

@@ -251,6 +251,7 @@ def main():
         mame_process=subprocess.Popen(command,cwd=state,env=environment,
                                       stdout=log,stderr=subprocess.STDOUT)
         server=None
+        socket_identity=None
         def mame_diagnostics():
             log.flush()
             output=(state/'mame.log').read_text(errors='replace')[-4000:].strip()
@@ -261,8 +262,13 @@ def main():
                 if mame_process.poll() is not None:
                     raise RuntimeError('MAME завершился до main; лог: '+
                                        str(state/'mame.log')+mame_diagnostics())
-                if (state/'main.json.error').exists() or time.monotonic()>deadline:
-                    raise RuntimeError('Таймаут ожидания main; лог: '+
+                error_file=state/'main.json.error'
+                if error_file.exists():
+                    raise RuntimeError('MAME не дошёл до main: '+
+                                       error_file.read_text(errors='replace').strip()+
+                                       '; лог: '+str(state/'mame.log')+mame_diagnostics())
+                if time.monotonic()>deadline:
+                    raise RuntimeError('Таймаут ожидания main без ответа Lua; лог: '+
                                        str(state/'mame.log')+mame_diagnostics())
                 time.sleep(.05)
             entry=json.loads(ready.read_text())
@@ -273,6 +279,8 @@ def main():
             if not line:
                 raise RuntimeError('Session server не запустился'+mame_diagnostics())
             server_ready=json.loads(line)
+            socket_state=Path(args.socket).lstat()
+            socket_identity=(socket_state.st_dev,socket_state.st_ino)
             print(json.dumps({'ready':True,'socket':args.socket,'pid':mame_process.pid,
                               'entry':entry,'build_id':server_ready['build_id']},
                              ensure_ascii=False),flush=True)
@@ -284,6 +292,14 @@ def main():
                 server.terminate()
                 try: server.wait(timeout=3)
                 except subprocess.TimeoutExpired: server.kill();server.wait()
+            if socket_identity is not None:
+                socket_path=Path(args.socket)
+                try:
+                    current=socket_path.lstat()
+                    if (current.st_dev,current.st_ino)==socket_identity:
+                        socket_path.unlink()
+                except FileNotFoundError:
+                    pass
             if mame_process.poll() is None:
                 mame_process.terminate()
                 try: mame_process.wait(timeout=5)