[Lldb-commits] [lldb] [lldb-dap] Adding support for cancelling a request. (PR #130169)

[Jonas Devlieghere via lldb-commits]

================
@@ -397,6 +402,23 @@ struct DAP {
   InstructionBreakpoint *GetInstructionBreakpoint(const lldb::break_id_t bp_id);
 
   InstructionBreakpoint *GetInstructionBPFromStopReason(lldb::SBThread &thread);
+
+  /// Checks if the request is cancelled.
+  bool IsCancelled(const protocol::Request &);
+
+  /// Clears the cancel request from the set of tracked cancel requests.
+  void ClearCancelRequest(const protocol::CancelArguments &);
+
+private:
+  std::mutex m_queue_mutex;
+  std::deque<protocol::Message> m_queue;
+  std::condition_variable m_queue_cv;
+
+  std::mutex m_cancelled_requests_mutex;
+  std::set<int64_t> m_cancelled_requests;
----------------
JDevlieghere wrote:

```suggestion
  llvm::SmallSet<int64_t, 4> m_cancelled_requests;
```

https://github.com/llvm/llvm-project/pull/130169