src/sim/async.hh

/*
 * Copyright (c) 2003-2005 The Regents of The University of Michigan
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
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 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#ifndef __ASYNC_HH__
#define __ASYNC_HH__

namespace gem5
{

///
/// @file sim/async.hh
/// This file defines flags used to handle asynchronous simulator events.
///

/// @name Asynchronous event flags.
/// To avoid races, signal handlers simply set these flags, which are
/// then checked in the main event loop.  Defined in main.cc.
//@{
extern volatile bool async_event;       ///< Some asynchronous event has happened.
extern volatile bool async_statdump;    ///< Async request to dump stats.
extern volatile bool async_statreset;   ///< Async request to reset stats.
extern volatile bool async_exit;        ///< Async request to exit simulator.
extern volatile bool async_io;          ///< Async I/O request (SIGIO).
extern volatile bool async_exception;   ///< Python exception.
//@}

} // namespace gem5

#endif // __ASYNC_HH__