usr/src/lib/libast/common/disc/memfatal.c

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1985-2010 AT&T Intellectual Property          *
   5 *                      and is licensed under the                       *
   6 *                  Common Public License, Version 1.0                  *
   7 *                    by AT&T Intellectual Property                     *
   8 *                                                                      *
   9 *                A copy of the License is available at                 *
  10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
  11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
  12 *                                                                      *
  13 *              Information and Software Systems Research               *
  14 *                            AT&T Research                             *
  15 *                           Florham Park NJ                            *
  16 *                                                                      *
  17 *                 Glenn Fowler <gsf@research.att.com>                  *
  18 *                  David Korn <dgk@research.att.com>                   *
  19 *                   Phong Vo <kpv@research.att.com>                    *
  20 *                                                                      *
  21 ***********************************************************************/
  22 #pragma prototyped
  23
  24 /*
  25  * install error message handler for fatal malloc exceptions
  26  */
  27
  28 #include <ast.h>
  29 #include <error.h>
  30 #include <vmalloc.h>
  31
  32 #include "FEATURE/vmalloc"
  33
  34 #if _std_malloc
  35
  36 void
  37 memfatal(void)
  38 {
  39 }
  40
  41 #else
  42
  43 /*
  44  * print message and fail on VM_BADADDR,VM_NOMEM
  45  */
  46
  47 static int
  48 nomalloc(Vmalloc_t* region, int type, void* obj, Vmdisc_t* disc)
  49 {
  50         Vmstat_t        st;
  51
  52         NoP(disc);
  53         switch (type)
  54         {
  55         case VM_BADADDR:
  56                 error(ERROR_SYSTEM|3, "invalid pointer %p passed to free or realloc", obj);
  57                 return(-1);
  58         case VM_NOMEM:
  59                 vmstat(region, &st);
  60                 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);
  61                 return(-1);
  62         }
  63         return(0);
  64 }
  65
  66 /*
  67  * initialize the malloc exception handler
  68  */
  69
  70 void
  71 memfatal(void)
  72 {
  73         Vmdisc_t*       disc;
  74
  75         malloc(0);
  76         if (disc = vmdisc(Vmregion, NiL))
  77                 disc->exceptf = nomalloc;
  78 }
  79
  80 #endif