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

[Adrian Vogelsgesang via lldb-commits]

================
@@ -857,29 +819,112 @@ lldb::SBError DAP::Disconnect(bool terminateDebuggee) {
   return error;
 }
 
+template <typename T>
+static std::optional<T> getArgumentsIfRequest(const protocol::Message &pm,
+                                              llvm::StringLiteral command) {
+  auto *const req = std::get_if<protocol::Request>(&pm);
+  if (!req || req->command != command)
+    return std::nullopt;
+
+  T args;
+  llvm::json::Path::Root root;
+  if (!fromJSON(req->rawArguments, args, root)) {
+    return std::nullopt;
+  }
+
+  return std::move(args);
+}
+
 llvm::Error DAP::Loop() {
-  auto cleanup = llvm::make_scope_exit([this]() {
-    if (output.descriptor)
-      output.descriptor->Close();
+  std::deque<protocol::Message> queue;
+  std::condition_variable queue_cv;
+  std::mutex queue_mutex;
+  std::thread queue_reader([&]() {
+    auto cleanup = llvm::make_scope_exit([&]() {
----------------
vogelsgesang wrote:

```suggestion
    auto cleanup = llvm::make_scope_exit([&]() {
      llvm::set_thread_name(dap.client_name + ".transport_handler");
```

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