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diff --git a/source/Plugins/Process/mach-core/ThreadMachCore.h b/source/Plugins/Process/mach-core/ThreadMachCore.h
new file mode 100644
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+++ b/source/Plugins/Process/mach-core/ThreadMachCore.h
@@ -0,0 +1,91 @@
+//===-- ThreadMachCore.h ----------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_ThreadMachCore_h_
+#define liblldb_ThreadMachCore_h_
+
+// C Includes
+// C++ Includes
+#include <string>
+
+// Other libraries and framework includes
+// Project includes
+#include "lldb/Target/Thread.h"
+
+class ProcessMachCore;
+
+class ThreadMachCore : public lldb_private::Thread
+{
+public:
+    ThreadMachCore (lldb_private::Process &process,
+                    lldb::tid_t tid);
+
+    ~ThreadMachCore() override;
+
+    void
+    RefreshStateAfterStop() override;
+
+    const char *
+    GetName() override;
+
+    lldb::RegisterContextSP
+    GetRegisterContext() override;
+
+    lldb::RegisterContextSP
+    CreateRegisterContextForFrame(lldb_private::StackFrame *frame) override;
+
+    static bool
+    ThreadIDIsValid (lldb::tid_t thread);
+
+    bool
+    ShouldStop (bool &step_more);
+
+    const char *
+    GetBasicInfoAsString ();
+
+    void
+    SetName(const char *name) override
+    {
+        if (name && name[0])
+            m_thread_name.assign (name);
+        else
+            m_thread_name.clear();
+    }
+
+    lldb::addr_t
+    GetThreadDispatchQAddr ()
+    {
+        return m_thread_dispatch_qaddr;
+    }
+
+    void
+    SetThreadDispatchQAddr (lldb::addr_t thread_dispatch_qaddr)
+    {
+        m_thread_dispatch_qaddr = thread_dispatch_qaddr;
+    }
+
+protected:
+    friend class ProcessMachCore;
+
+    //------------------------------------------------------------------
+    // Member variables.
+    //------------------------------------------------------------------
+    std::string m_thread_name;
+    std::string m_dispatch_queue_name;
+    lldb::addr_t m_thread_dispatch_qaddr;
+    lldb::RegisterContextSP m_thread_reg_ctx_sp;
+
+    //------------------------------------------------------------------
+    // Protected member functions.
+    //------------------------------------------------------------------
+    bool
+    CalculateStopInfo() override;
+};
+
+#endif // liblldb_ThreadMachCore_h_