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mulalloc.c
Package: mysql-4.1.16-win-src.zip [view]
Upload User: romrleung
Upload Date: 2022-05-23
Package Size: 18897k
Code Size: 2k
Category:
MySQL
Development Platform:
Visual C++
- /* Copyright (C) 2000 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program 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 General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #include "mysys_priv.h"
- #include <stdarg.h>
- /*
- Malloc many pointers at the same time
- Only ptr1 can be free'd, and doing this will free all
- the memory allocated. ptr2, etc all point inside big allocated
- memory area.
- SYNOPSIS
- my_multi_malloc()
- myFlags Flags
- ptr1, length1 Multiple arguments terminated by null ptr
- ptr2, length2 ...
- ...
- NULL
- */
- 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);
- }