[lldb-dap] Improve the process & initialized event check

Author: kusmour

lldb/packages/Python/lldbsuite/test/tools/lldb-dap/dap_server.py

@@ -374,6 +374,15 @@ def wait_for_event(self, filter=None, timeout=None):
             )
         return None
 
+    def wait_for_events(self, events, timeout=None):
+        """Wait for a list of events in `events` in any order.
+        Return the events not hit before the timeout expired"""
+        events = events[:]  # Make a copy to avoid modifying the input
+        while events:
+            event = self.wait_for_event(filter=events, timeout=timeout)
+            events.remove(event["event"])
+        return events
+
     def wait_for_stopped(self, timeout=None):
         stopped_events = []
         stopped_event = self.wait_for_event(
@@ -615,9 +624,7 @@ def request_attach(
         response = self.send_recv(command_dict)
 
         if response["success"]:
-            # Wait for a 'process' and 'initialized' event in any order
-            self.wait_for_event(filter=["process", "initialized"])
-            self.wait_for_event(filter=["process", "initialized"])
+            self.wait_for_events(["process", "initialized"])
         return response
 
     def request_breakpointLocations(
@@ -872,9 +879,7 @@ def request_launch(
         response = self.send_recv(command_dict)
 
         if response["success"]:
-            # Wait for a 'process' and 'initialized' event in any order
-            self.wait_for_event(filter=["process", "initialized"])
-            self.wait_for_event(filter=["process", "initialized"])
+            self.wait_for_events(["process", "initialized"])
         return response
 
     def request_next(self, threadId, granularity="statement"):