mariadb/mysys/mulalloc.c

/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
   
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
   
   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.
   
   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
   MA 02111-1307, USA */

	/* Malloc many pointers at the same time */
	/* format myFlags,ptr,length,ptr,length ... until null ptr */

#include "mysys_priv.h"
#include <stdarg.h>

gptr my_multi_malloc(myf myFlags, ...)
{
  va_list args;
  char **ptr,*start,*res;
  uint tot_length,length;
  DBUG_ENTER("my_multi_malloc");

  va_start(args,myFlags);
  tot_length=0;
  while ((ptr=va_arg(args, char **)))
  {
    length=va_arg(args,uint);
    tot_length+=ALIGN_SIZE(length);
  }
  va_end(args);

  if (!(start=(char *) my_malloc(tot_length,myFlags)))
    DBUG_RETURN(0); /* purecov: inspected */

  va_start(args,myFlags);
  res=start;
  while ((ptr=va_arg(args, char **)))
  {
    *ptr=res;
    length=va_arg(args,uint);
    res+=ALIGN_SIZE(length);
  }
  va_end(args);
  DBUG_RETURN((gptr) start);
}