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/* $Id: mtlist.h $ */
/** @file
* MS COM / XPCOM Abstraction Layer - Thread-safe list classes declaration.
*/
/*
* Copyright (C) 2011-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
#ifndef VBOX_INCLUDED_com_mtlist_h
#define VBOX_INCLUDED_com_mtlist_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <VBox/com/ptr.h>
#include <VBox/com/string.h>
#include <VBox/com/array.h>
#include <iprt/cpp/mtlist.h>
/** @defgroup grp_com_mtlist Thread-safe List Classes
* @ingroup grp_com
* @{
*/
/**
* Specialized thread-safe list class for using with com::ComPtr<C>
*
* @note: This is necessary cause ComPtr<IFACE> has a size of 8.
*/
template <typename C>
class RTCMTList< ComPtr<C> >: public RTCListBase< ComPtr<C>, ComPtr<C>*, true>
{
/* Traits */
typedef ComPtr<C> T;
typedef T *ITYPE;
static const bool MT = true;
typedef RTCListBase<T, ITYPE, MT> BASE;
public:
/**
* Creates a new list.
*
* This preallocates @a cCapacity elements within the list.
*
* @param cCapacity The initial capacity the list has.
* @throws std::bad_alloc
*/
RTCMTList(size_t cCapacity = BASE::kDefaultCapacity)
: BASE(cCapacity) {}
/* Define our own new and delete. */
RTMEMEF_NEW_AND_DELETE_OPERATORS();
};
/**
* Specialized thread-safe list class for using with com::ComObjPtr<C>
*
* @note: This is necessary cause ComObjPtr<IFACE> has a size of 8.
*/
template <typename C>
class RTCMTList< ComObjPtr<C> >: public RTCListBase< ComObjPtr<C>, ComObjPtr<C>*, true>
{
/* Traits */
typedef ComObjPtr<C> T;
typedef T *ITYPE;
static const bool MT = true;
typedef RTCListBase<T, ITYPE, MT> BASE;
public:
/**
* Creates a new list.
*
* This preallocates @a cCapacity elements within the list.
*
* @param cCapacity The initial capacity the list has.
* @throws std::bad_alloc
*/
RTCMTList(size_t cCapacity = BASE::kDefaultCapacity)
: BASE(cCapacity) {}
/* Define our own new and delete. */
RTMEMEF_NEW_AND_DELETE_OPERATORS();
};
/**
* Specialized thread-safe list class for using with com::Utf8Str.
*
* The class offers methods for importing com::SafeArray's of com::Bstr's.
*/
template <>
class RTCMTList<com::Utf8Str>: public RTCListBase<com::Utf8Str, com::Utf8Str *, true>
{
/* Traits */
typedef com::Utf8Str T;
typedef T *ITYPE;
static const bool MT = true;
typedef RTCListBase<T, ITYPE, MT> BASE;
public:
/**
* Creates a new list.
*
* This preallocates @a cCapacity elements within the list.
*
* @param cCapacity The initial capacity the list has.
* @throws std::bad_alloc
*/
RTCMTList(size_t cCapacity = BASE::kDefaultCapacity)
: BASE(cCapacity) {}
/**
* Creates a copy of another list.
*
* The other list will be fully copied and the capacity will be the same as
* the size of the other list. The com::Bstr's are silently converted to
* com::Utf8Str's.
*
* @param other The list to copy.
* @throws std::bad_alloc
*/
RTCMTList(ComSafeArrayIn(IN_BSTR, other))
{
com::SafeArray<IN_BSTR> sfaOther(ComSafeArrayInArg(other));
size_t const cElementsOther = sfaOther.size();
resizeArray(cElementsOther);
m_cElements = cElementsOther;
for (size_t i = 0; i < cElementsOther; ++i)
RTCListHelper<T, ITYPE>::set(m_pArray, i, T(sfaOther[i]));
}
/**
* Creates a copy of another list.
*
* The other list will be fully copied and the capacity will be the same as
* the size of the other list. The com::Bstr's are silently converted to
* com::Utf8Str's.
*
* @param other The list to copy.
* @throws std::bad_alloc
*/
RTCMTList(const com::SafeArray<IN_BSTR> &other)
: BASE(other.size())
{
for (size_t i = 0; i < m_cElements; ++i)
RTCListHelper<T, ITYPE>::set(m_pArray, i, T(other[i]));
}
/**
* Copy the items of the other list into this list. All previous items of
* this list are deleted.
*
* @param other The list to copy.
* @return a reference to this list.
* @throws std::bad_alloc
*/
RTCListBase<T, ITYPE, MT> &operator=(const com::SafeArray<IN_BSTR> &other)
{
m_guard.enterWrite();
/* Values cleanup */
RTCListHelper<T, ITYPE>::eraseRange(m_pArray, 0, m_cElements);
/* Copy */
if (other.size() != m_cCapacity)
resizeArrayNoErase(other.size());
m_cElements = other.size();
for (size_t i = 0; i < other.size(); ++i)
RTCListHelper<T, ITYPE>::set(m_pArray, i, T(other[i]));
m_guard.leaveWrite();
return *this;
}
/**
* Implicit conversion to a RTCString list.
*
* This allows the usage of the RTCString::join method with this list type.
*
* @return a converted const reference to this list.
*/
operator const RTCMTList<RTCString, RTCString*>&()
{
return *reinterpret_cast<RTCMTList<RTCString, RTCString*> *>(this);
}
/* Define our own new and delete. */
RTMEMEF_NEW_AND_DELETE_OPERATORS();
};
/** @} */
#endif /* !VBOX_INCLUDED_com_mtlist_h */
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