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att
GitHub Repository: att/ast
 Path: blob/master/src/lib/libast/disc/memfatal.c
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/***********************************************************************

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*                                                                      *

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*               This software is part of the ast package               *

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*          Copyright (c) 1985-2011 AT&T Intellectual Property          *

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*                      and is licensed under the                       *

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*                 Eclipse Public License, Version 1.0                  *

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*                    by AT&T Intellectual Property                     *

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*                                                                      *

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*                A copy of the License is available at                 *

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*          http://www.eclipse.org/org/documents/epl-v10.html           *

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*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

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*                                                                      *

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*              Information and Software Systems Research               *

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*                            AT&T Research                             *

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*                           Florham Park NJ                            *

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*                                                                      *

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*                 Glenn Fowler <[email protected]>                  *

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*                  David Korn <[email protected]>                   *

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*                   Phong Vo <[email protected]>                    *

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*                                                                      *

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***********************************************************************/

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#pragma prototyped

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/*

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 * install error message handler for fatal malloc exceptions

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 */

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#include <ast.h>

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#include <error.h>

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#include <vmalloc.h>

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#include "FEATURE/vmalloc"

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#if _std_malloc

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void

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memfatal(void)

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{

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}

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#else

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/*

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 * print message and fail on VM_BADADDR,VM_NOMEM

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 */

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static int

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nomalloc(Vmalloc_t* region, int type, void* obj, Vmdisc_t* disc)

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{

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	Vmstat_t	st;

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	NoP(disc);

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	switch (type)

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	{

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#ifdef VM_BADADDR

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	case VM_BADADDR:

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		error(ERROR_SYSTEM|3, "invalid pointer %p passed to free or realloc", obj);

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		return(-1);

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#endif

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	case VM_NOMEM:

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		vmstat(region, &st);

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		error(ERROR_SYSTEM|3, "storage allocator out of space on %lu byte request ( region %lu segments %lu busy %lu:%lu:%lu free %lu:%lu:%lu )", (size_t)obj, st.extent, st.n_seg, st.n_busy, st.s_busy, st.m_busy, st.n_free, st.s_free, st.m_free);

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		return(-1);

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	}

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	return(0);

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}

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/*

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 * initialize the malloc exception handler

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 */

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void

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memfatal(void)

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{

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	Vmdisc_t*	disc;

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	malloc(0);

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	if (disc = vmdisc(Vmregion, NiL))

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		disc->exceptf = nomalloc;

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}

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#endif

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