1 files changed, 33 insertions, 0 deletions
diff --git a/contrib/llvm-project/lldb/source/Host/common/MainLoopBase.cpp b/contrib/llvm-project/lldb/source/Host/common/MainLoopBase.cpp
new file mode 100644
index 000000000000..030a4f037168
--- /dev/null
+++ b/contrib/llvm-project/lldb/source/Host/common/MainLoopBase.cpp
@@ -0,0 +1,33 @@
+//===-- MainLoopBase.cpp --------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Host/MainLoopBase.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+void MainLoopBase::AddPendingCallback(const Callback &callback) {
+  {
+    std::lock_guard<std::mutex> lock{m_callback_mutex};
+    m_pending_callbacks.push_back(callback);
+  }
+  TriggerPendingCallbacks();
+}
+
+void MainLoopBase::ProcessPendingCallbacks() {
+  // Move the callbacks to a local vector to avoid keeping m_pending_callbacks
+  // locked throughout the calls.
+  std::vector<Callback> pending_callbacks;
+  {
+    std::lock_guard<std::mutex> lock{m_callback_mutex};
+    pending_callbacks = std::move(m_pending_callbacks);
+  }
+
+  for (const Callback &callback : pending_callbacks)
+    callback(*this);
+}