53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
/* Copyright (C) 2009 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef INCLUDED_SHAREDMEMORY
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#define INCLUDED_SHAREDMEMORY
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// we want to use placement new without grief
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// (Duplicated in Shareable.h)
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#undef new
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namespace AtlasMessage
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{
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// Shared pointers need to be allocated and freed from the same heap.
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// So, both sides of the Shareable interface should set these function pointers
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// to point to the same function. (The game will have to dynamically load them
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// from the DLL.)
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extern void* (*ShareableMallocFptr) (size_t n);
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extern void (*ShareableFreeFptr) (void* p);
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// Implement shared new/delete on top of those
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template<typename T> T* ShareableNew()
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{
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T* p = (T*)ShareableMallocFptr(sizeof(T));
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new (p) T;
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return p;
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}
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template<typename T> void ShareableDelete(T* p)
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{
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p->~T();
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ShareableFreeFptr(p);
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}
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// Or maybe we want to use a non-default constructor
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#define SHAREABLE_NEW(T, data) (new ( (T*)AtlasMessage::ShareableMallocFptr(sizeof(T)) ) T data)
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}
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#endif // INCLUDED_SHAREDMEMORY
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