================
@@ -755,11 +755,237 @@ size_t ModuleList::GetIndexForModule(const Module
*module) const {
}
namespace {
+/// A wrapper around ModuleList for shared modules. Provides fast lookups for
+/// file-based ModuleSpec queries.
+class SharedModuleList {
+public:
+ /// Finds all the modules matching the module_spec, and adds them to \p
+ /// matching_module_list.
+ void FindModules(const ModuleSpec &module_spec,
+ ModuleList &matching_module_list) const {
+ std::lock_guard<std::recursive_mutex> guard(GetMutex());
+ // Try index first for performance - if found, skip expensive full list
+ // search
+ if (FindModulesInIndex(module_spec, matching_module_list))
+ return;
+ m_list.FindModules(module_spec, matching_module_list);
+ // Assertion validates that if we found modules in the list but not the
+ // index, it's because the module_spec has no filename or the found module
+ // has a different filename (e.g., when searching by UUID and finding a
+ // module with an alias)
+ assert((matching_module_list.IsEmpty() ||
+ module_spec.GetFileSpec().GetFilename().IsEmpty() ||
+ module_spec.GetFileSpec().GetFilename() !=
+ matching_module_list.GetModuleAtIndex(0)
+ ->GetFileSpec()
+ .GetFilename()) &&
+ "Search by name not found in SharedModuleList's index");
+ }
+
+ ModuleSP FindModule(const Module *module_ptr) {
+ if (!module_ptr)
+ return ModuleSP();
+
+ std::lock_guard<std::recursive_mutex> guard(GetMutex());
+ // Try index first, fallback to full list search
+ if (ModuleSP result = FindModuleInIndex(module_ptr))
+ return result;
+ return m_list.FindModule(module_ptr);
+ }
+
+ // UUID searches bypass index since UUIDs aren't indexed by filename
+ ModuleSP FindModule(const UUID &uuid) const {
+ return m_list.FindModule(uuid);
+ }
+
+ void Append(const ModuleSP &module_sp, bool use_notifier) {
+ if (!module_sp)
+ return;
+ std::lock_guard<std::recursive_mutex> guard(GetMutex());
+ m_list.Append(module_sp, use_notifier);
+ AddToIndex(module_sp);
+ }
+
+ size_t RemoveOrphans(bool mandatory) {
+ std::unique_lock<std::recursive_mutex> lock(GetMutex(), std::defer_lock);
+ if (mandatory) {
+ lock.lock();
+ } else {
+ // Skip orphan removal if mutex unavailable (non-blocking)
----------------
JDevlieghere wrote:
```suggestion
// Skip orphan removal if mutex is unavailable. (non-blocking)
```
https://github.com/llvm/llvm-project/pull/152054
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