pcsx2/plugins/dev9ghzdrk/Win32/mtfifo.h

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/* PCSX2 - PS2 Emulator for PCs
* Copyright (C) 2002-2014 David Quintana [gigaherz]
*
* 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 <windows.h>
//a simple, mt-safe fifo template class
template<typename T>
class mtfifo
{
struct container
{
container(container* n,T d)
{
next=n;
data=d;
}
container* next;T data;
};
container* start;
container* end;
CRITICAL_SECTION cs;
public:
mtfifo()
{
InitializeCriticalSection(&cs);
}
~mtfifo()
{
//no need to destroy the CS? i cant remember realy .. ;p
}
void put(T data)
{
EnterCriticalSection(&cs);
if (end==0)
{
end=start=new container(0,data);
}
else
{
end=end->next=new container(0,data);
}
LeaveCriticalSection(&cs);
}
//Note, this is partialy mt-safe, the get may fail even if that returned false
bool empty(){ return start==0;}
bool get(T& rvi)
{
container* rv;
EnterCriticalSection(&cs);
if (start==0)
{
rv=0; //error
}
else
{
rv=start;
start=rv->next;
if (!start)
end=0; //last item
}
LeaveCriticalSection(&cs);
if(!rv)
return false;
rvi=rv->data;
delete rv;
return true;
}
};