[lldb] Clarify StructuredDataImpl ownership

StructuredDataImpl ownership semantics is unclear at best. Various
structures were holding a non-owning pointer to it, with a comment that
the object is owned somewhere else. From what I was able to gather that
"somewhere else" was the SBStructuredData object, but I am not sure that
all created object eventually made its way there. (It wouldn't matter
even if they did, as we are leaking most of our SBStructuredData
objects.)

Since StructuredDataImpl is just a collection of two (shared) pointers,
there's really no point in elaborate lifetime management, so this patch
replaces all StructuredDataImpl pointers with actual objects or
unique_ptrs to it. This makes it much easier to resolve SBStructuredData
leaks in a follow-up patch.

Differential Revision: https://reviews.llvm.org/D114791

1 files changed, 7 insertions, 7 deletions

diff --git a/lldb/unittests/ScriptInterpreter/Python/PythonTestSuite.cpp b/lldb/unittests/ScriptInterpreter/Python/PythonTestSuite.cpp
index 1295ab2..c27fc03 100644
--- a/lldb/unittests/ScriptInterpreter/Python/PythonTestSuite.cpp
+++ b/lldb/unittests/ScriptInterpreter/Python/PythonTestSuite.cpp
@@ -63,7 +63,7 @@ llvm::Expected<bool> lldb_private::LLDBSwigPythonBreakpointCallbackFunction(
     const char *python_function_name, const char *session_dictionary_name,
     const lldb::StackFrameSP &sb_frame,
     const lldb::BreakpointLocationSP &sb_bp_loc,
-    StructuredDataImpl *args_impl) {
+    const StructuredDataImpl &args_impl) {
   return false;
 }
 
@@ -94,7 +94,7 @@ void *lldb_private::LLDBSwigPythonCreateCommandObject(
 
 void *lldb_private::LLDBSwigPythonCreateScriptedThreadPlan(
     const char *python_class_name, const char *session_dictionary_name,
-    StructuredDataImpl *args_data, std::string &error_string,
+    const StructuredDataImpl &args_data, std::string &error_string,
     const lldb::ThreadPlanSP &thread_plan_sp) {
   return nullptr;
 }
@@ -108,7 +108,7 @@ bool lldb_private::LLDBSWIGPythonCallThreadPlan(void *implementor,
 
 void *lldb_private::LLDBSwigPythonCreateScriptedBreakpointResolver(
     const char *python_class_name, const char *session_dictionary_name,
-    lldb_private::StructuredDataImpl *args, const lldb::BreakpointSP &bkpt_sp) {
+    const StructuredDataImpl &args, const lldb::BreakpointSP &bkpt_sp) {
   return nullptr;
 }
 
@@ -200,14 +200,14 @@ lldb_private::LLDBSWIGPythonCreateOSPlugin(const char *python_class_name,
 
 void *lldb_private::LLDBSwigPythonCreateScriptedProcess(
     const char *python_class_name, const char *session_dictionary_name,
-    const lldb::TargetSP &target_sp, StructuredDataImpl *args_impl,
+    const lldb::TargetSP &target_sp, const StructuredDataImpl &args_impl,
     std::string &error_string) {
   return nullptr;
 }
 
 void *lldb_private::LLDBSwigPythonCreateScriptedThread(
     const char *python_class_name, const char *session_dictionary_name,
-    const lldb::ProcessSP &process_sp, StructuredDataImpl *args_impl,
+    const lldb::ProcessSP &process_sp, const StructuredDataImpl &args_impl,
     std::string &error_string) {
   return nullptr;
 }
@@ -259,8 +259,8 @@ void *lldb_private::LLDBSWIGPython_GetDynamicSetting(
 
 void *lldb_private::LLDBSwigPythonCreateScriptedStopHook(
     lldb::TargetSP target_sp, const char *python_class_name,
-    const char *session_dictionary_name,
-    lldb_private::StructuredDataImpl *args_impl, Status &error) {
+    const char *session_dictionary_name, const StructuredDataImpl &args_impl,
+    Status &error) {
   return nullptr;
 }