1 files changed, 107 insertions, 0 deletions
diff --git a/contrib/llvm-project/lldb/source/Plugins/Process/Utility/ThreadMemory.h b/contrib/llvm-project/lldb/source/Plugins/Process/Utility/ThreadMemory.h
new file mode 100644
index 000000000000..d124f5780ea9
--- /dev/null
+++ b/contrib/llvm-project/lldb/source/Plugins/Process/Utility/ThreadMemory.h
@@ -0,0 +1,107 @@
+//===-- ThreadMemory.h ------------------------------------------*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_THREADMEMORY_H
+#define LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_THREADMEMORY_H
+
+#include <string>
+
+#include "lldb/Target/Thread.h"
+
+class ThreadMemory : public lldb_private::Thread {
+public:
+  ThreadMemory(lldb_private::Process &process, lldb::tid_t tid,
+               const lldb::ValueObjectSP &thread_info_valobj_sp);
+
+  ThreadMemory(lldb_private::Process &process, lldb::tid_t tid,
+               llvm::StringRef name, llvm::StringRef queue,
+               lldb::addr_t register_data_addr);
+
+  ~ThreadMemory() override;
+
+  lldb::RegisterContextSP GetRegisterContext() override;
+
+  lldb::RegisterContextSP
+  CreateRegisterContextForFrame(lldb_private::StackFrame *frame) override;
+
+  bool CalculateStopInfo() override;
+
+  const char *GetInfo() override {
+    if (m_backing_thread_sp)
+      m_backing_thread_sp->GetInfo();
+    return nullptr;
+  }
+
+  const char *GetName() override {
+    if (!m_name.empty())
+      return m_name.c_str();
+    if (m_backing_thread_sp)
+      m_backing_thread_sp->GetName();
+    return nullptr;
+  }
+
+  const char *GetQueueName() override {
+    if (!m_queue.empty())
+      return m_queue.c_str();
+    if (m_backing_thread_sp)
+      m_backing_thread_sp->GetQueueName();
+    return nullptr;
+  }
+
+  void WillResume(lldb::StateType resume_state) override;
+
+  void DidResume() override {
+    if (m_backing_thread_sp)
+      m_backing_thread_sp->DidResume();
+  }
+
+  lldb::user_id_t GetProtocolID() const override {
+    if (m_backing_thread_sp)
+      return m_backing_thread_sp->GetProtocolID();
+    return Thread::GetProtocolID();
+  }
+
+  void RefreshStateAfterStop() override;
+
+  lldb::ValueObjectSP &GetValueObject() { return m_thread_info_valobj_sp; }
+
+  void ClearStackFrames() override;
+
+  void ClearBackingThread() override { m_backing_thread_sp.reset(); }
+
+  bool SetBackingThread(const lldb::ThreadSP &thread_sp) override {
+    // printf ("Thread 0x%llx is being backed by thread 0x%llx\n", GetID(),
+    // thread_sp->GetID());
+    m_backing_thread_sp = thread_sp;
+    return (bool)thread_sp;
+  }
+
+  lldb::ThreadSP GetBackingThread() const override {
+    return m_backing_thread_sp;
+  }
+
+protected:
+  bool IsOperatingSystemPluginThread() const override { return true; }
+
+  // If this memory thread is actually represented by a thread from the
+  // lldb_private::Process subclass, then fill in the thread here and
+  // all APIs will be routed through this thread object. If m_backing_thread_sp
+  // is empty, then this thread is simply in memory with no representation
+  // through the process plug-in.
+  lldb::ThreadSP m_backing_thread_sp;
+  lldb::ValueObjectSP m_thread_info_valobj_sp;
+  std::string m_name;
+  std::string m_queue;
+  lldb::addr_t m_register_data_addr;
+
+private:
+  ThreadMemory(const ThreadMemory &) = delete;
+  const ThreadMemory &operator=(const ThreadMemory &) = delete;
+};
+
+#endif // LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_THREADMEMORY_H