[Lldb-commits] [lldb] [LLDB][Accelerators][1/M] Scaffold a basic Mock plugin for testing accelerator flows (PR #186535)

[Greg Clayton via lldb-commits]

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@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// 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 "LLDBServerPluginRegistry.h"
+#include "Plugins/Accelerator/Mock/LLDBServerPluginMockAccelerator.h"
+#include "llvm/Support/Threading.h"
+
+using namespace lldb_private::lldb_server;
+
+LLDBServerPluginRegistry &LLDBServerPluginRegistry::Instance() {
+  static LLDBServerPluginRegistry registry;
+  static llvm::once_flag once;
+
+  llvm::call_once(once, []() { registry.Initialize(); });
+
+  return registry;
+}
+
+void LLDBServerPluginRegistry::Initialize() {
+  // Register all known accelerator plugins
+  Register(PluginKind::Accelerator,
+           [](LLDBServerPluginAccelerator::GDBServer &gdb_server,
+              lldb_private::MainLoop &main_loop)
+               -> std::unique_ptr<LLDBServerPluginAccelerator> {
+             return std::make_unique<LLDBServerPluginMockAccelerator>(gdb_server,
+                                                                      main_loop);
+           });
+}
+
+void LLDBServerPluginRegistry::Register(PluginKind kind,
+                                        AcceleratorFactory factory) {
+  m_accelerator_factories.push_back(std::move(factory));
+}
+
+std::vector<std::unique_ptr<LLDBServerPluginAccelerator>>
+LLDBServerPluginRegistry::TryInstantiateAllAcceleratorPlugins(
+    LLDBServerPluginAccelerator::GDBServer &gdb_server, MainLoop &main_loop) {
+  std::vector<std::unique_ptr<LLDBServerPluginAccelerator>> activated;
+  for (const AcceleratorFactory &factory : m_accelerator_factories) {
+    std::unique_ptr<LLDBServerPluginAccelerator> plugin = factory(gdb_server, main_loop);
+    if (plugin && plugin->TryActivate())
+      activated.push_back(std::move(plugin));
+  }
----------------
clayborg wrote:

If we register a static callback like all other plug-ins do within LLDB, then we can just call the `static LLDBServerPluginAccelerator * <class>::CreateInstance()` method and if it returns non NULL then add it to the activeted list.

https://github.com/llvm/llvm-project/pull/186535