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//===-- ThreadSafeSTLVector.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_ThreadSafeSTLVector_h_
#define liblldb_ThreadSafeSTLVector_h_

// C Includes
// C++ Includes
#include <vector>
#include <mutex>

// Other libraries and framework includes
// Project includes
#include "lldb/lldb-defines.h"

namespace lldb_private {
    
    template <typename _Object>
    class ThreadSafeSTLVector
    {
    public:
        typedef std::vector<_Object> collection;
        typedef typename collection::iterator iterator;
        typedef typename collection::const_iterator const_iterator;
        //------------------------------------------------------------------
        // Constructors and Destructors
        //------------------------------------------------------------------
        ThreadSafeSTLVector() : m_collection(), m_mutex() {}
        
        ~ThreadSafeSTLVector() = default;
        
        bool
        IsEmpty() const
        {
            std::lock_guard<std::recursive_mutex> guard(m_mutex);
            return m_collection.empty();
        }
        
        void
        Clear()
        {
            std::lock_guard<std::recursive_mutex> guard(m_mutex);
            return m_collection.clear();
        }
        
        size_t
        GetCount()
        {
            std::lock_guard<std::recursive_mutex> guard(m_mutex);
            return m_collection.size();
        }
        
        void
        AppendObject (_Object& object)
        {
            std::lock_guard<std::recursive_mutex> guard(m_mutex);
            m_collection.push_back(object);
        }
        
        _Object
        GetObject (size_t index)
        {
            std::lock_guard<std::recursive_mutex> guard(m_mutex);
            return m_collection.at(index);
        }
        
        void
        SetObject (size_t index, const _Object& object)
        {
            std::lock_guard<std::recursive_mutex> guard(m_mutex);
            m_collection.at(index) = object;
        }
        
        std::recursive_mutex &
        GetMutex()
        {
            return m_mutex;
        }
        
    private:
        collection m_collection;
        mutable std::recursive_mutex m_mutex;
        
        //------------------------------------------------------------------
        // For ThreadSafeSTLVector only
        //------------------------------------------------------------------
        DISALLOW_COPY_AND_ASSIGN (ThreadSafeSTLVector);
    };
    
    
} // namespace lldb_private

#endif  // liblldb_ThreadSafeSTLVector_h_