[lldb] Add OS plugin property for reporting all threads (#123145)

Currently, an LLDB target option controls whether plugins report all
threads. However, it seems natural for this knowledge could come from
the plugin itself. To support this, this commits adds a virtual method
to the plugin base class, making the Python OS query the target option
to preserve existing behavior.

2 files changed, 12 insertions, 0 deletions

diff --git a/lldb/source/Plugins/ScriptInterpreter/Python/Interfaces/OperatingSystemPythonInterface.cpp b/lldb/source/Plugins/ScriptInterpreter/Python/Interfaces/OperatingSystemPythonInterface.cpp
index c3379e7..d8b2ea9 100644
--- a/lldb/source/Plugins/ScriptInterpreter/Python/Interfaces/OperatingSystemPythonInterface.cpp
+++ b/lldb/source/Plugins/ScriptInterpreter/Python/Interfaces/OperatingSystemPythonInterface.cpp
@@ -82,6 +82,16 @@ OperatingSystemPythonInterface::GetRegisterContextForTID(lldb::tid_t tid) {
   return obj->GetAsString()->GetValue().str();
 }
 
+std::optional<bool> OperatingSystemPythonInterface::DoesPluginReportAllThreads() {
+  Status error;
+  StructuredData::ObjectSP obj = Dispatch("does_plugin_report_all_threads", error);
+  if (!ScriptedInterface::CheckStructuredDataObject(LLVM_PRETTY_FUNCTION, obj,
+                                                    error))
+    return {};
+
+  return obj->GetAsBoolean()->GetValue();
+}
+
 void OperatingSystemPythonInterface::Initialize() {
   const std::vector<llvm::StringRef> ci_usages = {
       "settings set target.process.python-os-plugin-path <script-path>",
diff --git a/lldb/source/Plugins/ScriptInterpreter/Python/Interfaces/OperatingSystemPythonInterface.h b/lldb/source/Plugins/ScriptInterpreter/Python/Interfaces/OperatingSystemPythonInterface.h
index 102c3c3..8df48f1 100644
--- a/lldb/source/Plugins/ScriptInterpreter/Python/Interfaces/OperatingSystemPythonInterface.h
+++ b/lldb/source/Plugins/ScriptInterpreter/Python/Interfaces/OperatingSystemPythonInterface.h
@@ -45,6 +45,8 @@ public:
 
   std::optional<std::string> GetRegisterContextForTID(lldb::tid_t tid) override;
 
+  std::optional<bool> DoesPluginReportAllThreads() override;
+
   static void Initialize();
 
   static void Terminate();