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/*
* (c) Copyright 1990 Conor P. Cahill (uunet!virtech!cpcahil).
* You may copy, distribute, and use this software as long as this
* copyright statement is not removed.
*/
#include <stdio.h>
#include "malloc.h"
/*
* Function: malloc_init()
*
* Purpose: to initialize the pointers and variables use by the
* malloc() debugging library
*
* Arguments: none
*
* Returns: nothing of any value
*
* Narrative: Just initialize all the needed variables. Use mallopt
* to set options taken from the environment.
*
*/
#ifndef lint
static
char rcs_hdr[] = "$Id: m_init.c,v 1.2 2006-07-25 10:08:07 rt Exp $";
#endif
void
malloc_init()
{
char * cptr;
char * getenv();
union malloptarg m;
extern char * malloc_data_end;
extern char * malloc_data_start;
extern struct mlist * malloc_end;
extern struct mlist malloc_start;
char * sbrk();
/*
* If already initialized...
*/
if( malloc_data_start != (char *) 0)
{
return;
}
malloc_data_start = sbrk(0);
malloc_data_end = malloc_data_start;
malloc_start.s.size = 0;
malloc_end = &malloc_start;
if( (cptr=getenv("MALLOC_WARN")) != NULL )
{
m.i = atoi(cptr);
(void) mallopt(MALLOC_WARN,m);
}
if( (cptr=getenv("MALLOC_FATAL")) != NULL)
{
m.i = atoi(cptr);
(void) mallopt(MALLOC_FATAL,m);
}
if( (cptr=getenv("MALLOC_CKCHAIN")) != NULL)
{
m.i = atoi(cptr);
(void) mallopt(MALLOC_CKCHAIN,m);
}
if( (cptr=getenv("MALLOC_ERRFILE")) != NULL)
{
m.str = cptr;
(void) mallopt(MALLOC_ERRFILE,m);
}
}
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