/usr/include/directfb/direct/fifo.h is in libdirectfb-dev 1.7.7-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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(c) Copyright 2012-2013 DirectFB integrated media GmbH
(c) Copyright 2001-2013 The world wide DirectFB Open Source Community (directfb.org)
(c) Copyright 2000-2004 Convergence (integrated media) GmbH
All rights reserved.
Written by Denis Oliver Kropp <dok@directfb.org>,
Andreas Shimokawa <andi@directfb.org>,
Marek Pikarski <mass@directfb.org>,
Sven Neumann <neo@directfb.org>,
Ville Syrjälä <syrjala@sci.fi> and
Claudio Ciccani <klan@users.sf.net>.
This library 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 Foundation; either
version 2 of the License, or (at your option) any later version.
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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#ifndef __DIRECT__FIFO_H__
#define __DIRECT__FIFO_H__
#include <direct/debug.h>
#include <direct/list.h>
struct __D_DirectFifoItem {
DirectLink link;
int magic;
};
struct __D_DirectFifo {
int magic;
DirectMutex lock;
DirectWaitQueue wq;
DirectLink *items;
int waiting;
bool wake;
};
/**********************************************************************************************************************/
void DIRECT_API direct_fifo_init ( DirectFifo *fifo );
void DIRECT_API direct_fifo_destroy( DirectFifo *fifo );
/**********************************************************************************************************************/
int DIRECT_API direct_fifo_push( DirectFifo *fifo, DirectFifoItem *item );
void DIRECT_API *direct_fifo_pull( DirectFifo *fifo );
void DIRECT_API *direct_fifo_pop ( DirectFifo *fifo );
/**********************************************************************************************************************/
DirectResult DIRECT_API direct_fifo_wait ( DirectFifo *fifo );
DirectResult DIRECT_API direct_fifo_wait_timed( DirectFifo *fifo, int timeout_ms );
DirectResult DIRECT_API direct_fifo_wakeup ( DirectFifo *fifo );
#endif
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