1 files changed, 47 insertions, 0 deletions
diff --git a/lldb/source/Symbol/SymbolLocator.cpp b/lldb/source/Symbol/SymbolLocator.cpp
new file mode 100644
index 000000000000..918f13ed9c19
--- /dev/null
+++ b/lldb/source/Symbol/SymbolLocator.cpp
@@ -0,0 +1,47 @@
+//===-- symbolLocator.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/Symbol/SymbolLocator.h"
+
+#include "lldb/Core/Debugger.h"
+#include "lldb/Core/PluginManager.h"
+
+#include "llvm/ADT/SmallSet.h"
+#include "llvm/Support/ThreadPool.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+void SymbolLocator::DownloadSymbolFileAsync(const UUID &uuid) {
+  if (!ModuleList::GetGlobalModuleListProperties().GetEnableBackgroundLookup())
+    return;
+
+  static llvm::SmallSet<UUID, 8> g_seen_uuids;
+  static std::mutex g_mutex;
+  Debugger::GetThreadPool().async([=]() {
+    {
+      std::lock_guard<std::mutex> guard(g_mutex);
+      if (g_seen_uuids.count(uuid))
+        return;
+      g_seen_uuids.insert(uuid);
+    }
+
+    Status error;
+    ModuleSpec module_spec;
+    module_spec.GetUUID() = uuid;
+    if (!PluginManager::DownloadObjectAndSymbolFile(module_spec, error,
+                                                    /*force_lookup=*/true,
+                                                    /*copy_executable=*/false))
+      return;
+
+    if (error.Fail())
+      return;
+
+    Debugger::ReportSymbolChange(module_spec);
+  });
+}