/* sp.h: STACK PROBE INTERFACE
 *
 * $Id: //info.ravenbrook.com/project/mps/master/code/sp.h#5 $
 * Copyright (c) 2014-2020 Ravenbrook Limited.  See end of file for license.
 */

#ifndef sp_h
#define sp_h

#include "mpmtypes.h"


/* StackProbe -- probe above the stack to provoke early stack overflow
 *
 * This function should check that the stack has at least depth words
 * available, and if not, then provoke a stack overflow exception or
 * protection fault. The purpose is to ensure that the exception is
 * generated before taking the arena lock where it can be handled
 * safely, rather than at some later point where the arena lock is
 * held and so handling the exception may cause the MPS to be entered
 * recursively.
 */

extern void StackProbe(Size depth);


#endif /* sp_h */


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 *
 * Copyright (C) 2014-2020 Ravenbrook Limited <https://www.ravenbrook.com/>.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
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 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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