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/* (C) Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005 Stijn van Dongen
* (C) Copyright 2006, 2007 Stijn van Dongen
*
* This file is part of tingea. You can redistribute and/or modify tingea
* under the terms of the GNU General Public License; either version 3 of the
* License or (at your option) any later version. You should have received a
* copy of the GPL along with tingea, in the file COPYING.
*/
/* include <stdio.h>
include <stdlib.h>
include <string.h>
include <sys/types.h>
*/
#include <unistd.h>
#include <stdlib.h>
#include <signal.h>
#include "alloc.h"
#include "err.h"
static dim mcx_alloc_maxchunksize = 1048576;
static long mcx_alloc_maxtimes = -1;
static mcxbool mcx_alloc_limit = FALSE;
void mcxAllocLimits
( long maxchunksize
, long maxtimes
)
{ if (maxchunksize > 0)
mcx_alloc_maxchunksize = maxchunksize
; if (maxtimes > 0)
mcx_alloc_maxtimes = maxtimes
; mcx_alloc_limit = TRUE;
; }
void* mcxRealloc
( void* object
, dim new_size
, mcxOnFail ON_FAIL
)
{ void* mblock = NULL
; mcxstatus status = STATUS_OK
; const char* me = "mcxRealloc"
; if (!new_size)
{ if (object)
mcxFree(object)
; }
else
{ if
( mcx_alloc_limit
&& (!mcx_alloc_maxtimes-- || new_size > mcx_alloc_maxchunksize)
)
mblock = NULL
; else
mblock = object
? realloc(object, new_size)
: malloc(new_size)
; }
if (new_size && (!mblock))
mcxMemDenied(stderr, me, "byte", new_size)
, status = 1
;
if (status)
{ const char* tin = getenv("TINGEA_MEM_SIGNAL")
; if (tin)
{ unsigned tintin = atoi(tin)
; raise(tintin ? tintin : SIGSEGV)
; }
if (ON_FAIL == SLEEP_ON_FAIL)
{ mcxTell(me, "pid %ld, entering sleep mode", (long) getpid())
; while(1)
sleep(1000)
; }
if (ON_FAIL == EXIT_ON_FAIL || ON_FAIL == ENQUIRE_ON_FAIL)
{ mcxTell(me, "going down")
; if (ON_FAIL == ENQUIRE_ON_FAIL)
mcxTell(me, "ENQUIRE fail mode ignored")
; exit(1)
; }
}
return mblock
; }
void mcxNFree
( void* base
, dim n_elem
, dim elem_size
, void (*obRelease) (void *)
)
{ if (n_elem && obRelease)
{ char *ob = base
; while (n_elem-- > 0)
obRelease(ob)
, ob += elem_size
; }
mcxFree(base)
; }
void* mcxNAlloc
( dim n_elem
, dim elem_size
, void* (*obInit) (void *)
, mcxOnFail ON_FAIL
)
{ return mcxNRealloc(NULL, n_elem, 0, elem_size, obInit, ON_FAIL)
; }
void* mcxNRealloc
( void* mem
, dim n_elem
, dim n_elem_prev
, dim elem_size
, void* (*obInit) (void *)
, mcxOnFail ON_FAIL
)
{ char* ob
; mem = mcxRealloc(mem, n_elem * elem_size, ON_FAIL)
;
if (!mem)
return NULL
; if (obInit && n_elem > n_elem_prev)
{ ob = ((char*) mem) + (elem_size * n_elem_prev)
; while (n_elem-- > n_elem_prev) /* careful with unsignedness */
{ obInit(ob)
; ob += elem_size
; }
}
return mem
; }
void mcxMemDenied
( FILE* channel
, const char* requestee
, const char* unittype
, dim n
)
{ mcxErrf
( channel
, requestee
, "memory shortage: could not alloc [%lu] instances of [%s]"
, (ulong) n
, unittype
)
; }
void mcxFree
( void* object
)
{ if (object) free(object)
; }
void* mcxAlloc
( dim size
, mcxOnFail ON_FAIL
)
{ return mcxRealloc(NULL, size, ON_FAIL)
; }
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