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asyncfio.h

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2005 The ScummVM project
 *
 * 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; either version 2
 * of the License, or (at your option) any later version.

 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $Header: /cvsroot/scummvm/scummvm/backends/ps2/asyncfio.h,v 1.4.2.2 2005/10/25 06:56:28 lavosspawn Exp $
 *
 */

#define MAX_HANDLES 32
#include <sys/stat.h>

class AsyncFio {
public:
      AsyncFio(void);
      ~AsyncFio(void);
      int open(const char *name, int ioMode);
      void close(int handle);
      void read(int fd, void *dest, unsigned int len);
      void write(int fd, const void *src, unsigned int len);
      int seek(int fd, int offset, int whence);
      int mkdir(const char *name);
      int dopen(const char *name);
      int dread(int fd, iox_dirent_t *dest);
      void dclose(int fd);
      int sync(int fd);
      bool poll(int fd);
      bool fioAvail(void);
private:
      void checkSync(void);
      int _ioSema;
      volatile int * volatile _runningOp;
      volatile int _ioSlots[MAX_HANDLES];
};


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