lfVector.h

/* Copyright (c) 2011-2012, EPFL/Blue Brain Project
 *                          Stefan Eilemann <stefan.eilemann@epfl.ch>
 *
 * This file is part of Lunchbox <https://github.com/Eyescale/Lunchbox>
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License version 3.0 as published
 * by the Free Software Foundation.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef LUNCHBOX_LFVECTOR_H
#define LUNCHBOX_LFVECTOR_H

#include <lunchbox/bitOperation.h> // used inline
#include <lunchbox/debug.h> // used inline
#include <lunchbox/scopedMutex.h> // member
#include <lunchbox/serializable.h>
#include <lunchbox/spinLock.h> // member
#include <algorithm> // used inline


#ifdef _WIN32
#  define lb_bzero( ptr, size ) memset( ptr, 0, size )
#else
#  include <strings.h>
#  define lb_bzero bzero
#endif

namespace lunchbox
{

template< class T, int32_t nSlots = 32 > class LFVector
{
public:
    typedef ScopedFastWrite ScopedWrite;

    LFVector();

    explicit LFVector( const size_t n );

    explicit LFVector( const size_t n, const T& t );

    explicit LFVector( const LFVector& from );

    template< int32_t fromSlots >
    explicit LFVector( const LFVector< T, fromSlots >& from );

    ~LFVector();

    LFVector& operator = ( const LFVector& from );

    bool operator == ( const LFVector& rhs ) const;

    bool operator != ( const LFVector& rhs ) const { return !(*this == rhs); }

    bool empty() const { return size_ == 0; } 
    size_t size() const { return size_; } 

    T& operator[]( size_t i );

    const T& operator[]( size_t i ) const;

    T& front();

    T& back();

    typedef LFVectorIterator< LFVector< T >, T > iterator;

    typedef LFVectorIterator< const LFVector< T >, const T > const_iterator;

    const_iterator begin() const; 
    const_iterator end() const; 
    iterator begin(); 
    iterator end(); 

    void expand( const size_t newSize, const T& item = T( ));

    void push_back( const T& item, bool lock = true );

    void pop_back();

    bool pop_back( T& element );

    iterator erase( typename LFVector< T, nSlots >::iterator pos );

    iterator erase( const T& element );

    void clear();

    ScopedWrite getWriteLock();

private:
    LB_SERIALIZABLE

    T* slots_[ nSlots ];
    size_t size_;
    mutable SpinLock lock_;

    template< int32_t fromSlots >
    void assign_( const LFVector< T, fromSlots >& from );

    void push_back_unlocked_( const T& item );

    void trim_();
};

template< class T >
std::ostream& operator << ( std::ostream& os, const LFVector< T >& v );

}

#include "lfVector.ipp" // template implementation

#endif // LUNCHBOX_LFVECTOR_H