Fix #201: track the state of the inferior with events

lib/gdb_commands.py

@@ -28,6 +28,15 @@ def __init__(self):
         self.quit = True
         self.thrd = None
         self.fallback_to_parsing = False
+        self.state = "stopped"
+
+        def handle_continue(event):
+            self.state = "running"
+        gdb.events.cont.connect(handle_continue)
+        def handle_stop(event):
+            self.state = "stopped"
+        gdb.events.stop.connect(handle_stop)
+        gdb.events.exited.connect(handle_stop)
 
     def invoke(self, arg, from_tty):
         if not self.thrd:
@@ -108,17 +117,7 @@ def _send_response(self, response, req_id, sock, addr):
         sock.sendto(response_json, 0, addr)
 
     def _get_process_state(self):
-        try:
-            inferior = gdb.selected_inferior()
-            if inferior.is_valid():
-                threads = inferior.threads()
-                is_running = any((t.is_valid() and t.is_running()
-                                  for t in threads))
-                state = "running" if is_running else "stopped"
-                return state
-        except gdb.error:
-            ...
-        return "other"
+        return self.state
 
     def _get_current_frame_location(self):
         try:

lua/nvimgdb/backend/gdb.lua

@@ -30,6 +30,7 @@ function C.create_parser(actions, proxy)
   self:_init(actions)
 
   function P:query_paused()
+    log.debug({"P:query_paused"})
     coroutine.resume(coroutine.create(function()
       local process_state = proxy:query('get-process-state')
       log.debug({"process state", process_state})