mirror of https://github.com/PCSX2/pcsx2.git
144 lines
3.2 KiB
C++
144 lines
3.2 KiB
C++
/* PCSX2 - PS2 Emulator for PCs
|
|
* Copyright (C) 2002-2010 PCSX2 Dev Team
|
|
*
|
|
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
|
|
* of the GNU Lesser General Public License as published by the Free Software Found-
|
|
* ation, either version 3 of the License, or (at your option) any later version.
|
|
*
|
|
* PCSX2 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 PCSX2.
|
|
* If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "Threading.h"
|
|
using Threading::ScopedLock;
|
|
|
|
// --------------------------------------------------------------------------------------
|
|
// ScopedPtrMT
|
|
// --------------------------------------------------------------------------------------
|
|
|
|
template< typename T >
|
|
class ScopedPtrMT
|
|
{
|
|
DeclareNoncopyableObject(ScopedPtrMT);
|
|
|
|
typedef T* TPtr;
|
|
|
|
protected:
|
|
volatile TPtr m_ptr;
|
|
Threading::Mutex m_mtx;
|
|
|
|
public:
|
|
typedef T element_type;
|
|
|
|
wxEXPLICIT ScopedPtrMT(T * ptr = NULL)
|
|
{
|
|
m_ptr = ptr;
|
|
}
|
|
|
|
~ScopedPtrMT() throw() { _Delete_unlocked(); }
|
|
|
|
ScopedPtrMT& Reassign(T * ptr = NULL)
|
|
{
|
|
TPtr doh = (TPtr)Threading::AtomicExchangePointer( m_ptr, ptr );
|
|
if ( ptr != doh ) delete doh;
|
|
return *this;
|
|
}
|
|
|
|
ScopedPtrMT& Delete() throw()
|
|
{
|
|
ScopedLock lock( m_mtx );
|
|
_Delete_unlocked();
|
|
}
|
|
|
|
// Removes the pointer from scoped management, but does not delete!
|
|
// (ScopedPtr will be NULL after this method)
|
|
T *DetachPtr()
|
|
{
|
|
ScopedLock lock( m_mtx );
|
|
|
|
T *ptr = m_ptr;
|
|
m_ptr = NULL;
|
|
return ptr;
|
|
}
|
|
|
|
// Returns the managed pointer. Can return NULL as a valid result if the ScopedPtrMT
|
|
// has no object in management.
|
|
T* GetPtr() const
|
|
{
|
|
return m_ptr;
|
|
}
|
|
|
|
void SwapPtr(ScopedPtrMT& other)
|
|
{
|
|
ScopedLock lock( m_mtx );
|
|
T * const tmp = other.m_ptr;
|
|
other.m_ptr = m_ptr;
|
|
m_ptr = tmp;
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// ScopedPtrMT Operators
|
|
// ----------------------------------------------------------------------------
|
|
// I've decided to use the ATL's approach to pointer validity tests, opposed to
|
|
// the wx/boost approach (which uses some bizarre member method pointer crap, and can't
|
|
// allow the T* implicit casting.
|
|
|
|
bool operator!() const throw()
|
|
{
|
|
return m_ptr == NULL;
|
|
}
|
|
|
|
// Equality
|
|
bool operator==(T* pT) const throw()
|
|
{
|
|
return m_ptr == pT;
|
|
}
|
|
|
|
// Inequality
|
|
bool operator!=(T* pT) const throw()
|
|
{
|
|
return !operator==(pT);
|
|
}
|
|
|
|
// Convenient assignment operator. ScopedPtrMT = NULL will issue an automatic deletion
|
|
// of the managed pointer.
|
|
ScopedPtrMT& operator=( T* src )
|
|
{
|
|
return Reassign( src );
|
|
}
|
|
|
|
#if 0
|
|
operator T*() const
|
|
{
|
|
return m_ptr;
|
|
}
|
|
|
|
// Dereference operator, returns a handle to the managed pointer.
|
|
// Generates a debug assertion if the object is NULL!
|
|
T& operator*() const
|
|
{
|
|
pxAssert(m_ptr != NULL);
|
|
return *m_ptr;
|
|
}
|
|
|
|
T* operator->() const
|
|
{
|
|
pxAssert(m_ptr != NULL);
|
|
return m_ptr;
|
|
}
|
|
#endif
|
|
|
|
protected:
|
|
void _Delete_unlocked() throw()
|
|
{
|
|
delete m_ptr;
|
|
m_ptr = NULL;
|
|
}
|
|
};
|