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57c526ffb8
This patch also fixes some bugs detected by valgrind after this patch: - Not enough copy_func elements was allocated by Create_tmp_table() which causes an memory overwrite in Create_tmp_table::add_fields() I added an ASSERT() to be able to detect this also without valgrind. The bug was that TMP_TABLE_PARAM::copy_fields was not correctly set when calling create_tmp_table(). - Aria::empty_bits is not allocated if there is no varchar/char/blob fields in the table. Fixed code to take this into account. This cannot cause any issues as this is just a memory access into other Aria memory and the content of the memory would not be used. - Aria::last_key_buff was not allocated big enough. This may have caused issues with rtrees and ma_extra(HA_EXTRA_REMEMBER_POS) as they would use the same memory area. - Aria and MyISAM didn't take extended key parts into account, which caused problems when copying rec_per_key from engine to sql level. - Mark asan builds with 'asan' in version strihng to detect these in not_valgrind_build.inc. This is needed to not have main.sp-no-valgrind fail with asan.
127 lines
3.1 KiB
C
127 lines
3.1 KiB
C
/* Copyright (c) 2000, 2002, 2003, 2007 MySQL AB
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Use is subject to license terms
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
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#include "mysys_priv.h"
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#include <stdarg.h>
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#ifndef DBUG_OFF
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/* Put a protected barrier after every element when using my_multi_malloc() */
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#define ALLOC_BARRIER
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#endif
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/*
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Malloc many pointers at the same time
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Only ptr1 can be free'd, and doing this will free all
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the memory allocated. ptr2, etc all point inside big allocated
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memory area.
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SYNOPSIS
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my_multi_malloc()
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myFlags Flags
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ptr1, length1 Multiple arguments terminated by null ptr
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ptr2, length2 ...
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...
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NULL
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*/
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void* my_multi_malloc(PSI_memory_key key, myf myFlags, ...)
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{
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va_list args;
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char **ptr,*start,*res;
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size_t tot_length,length;
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DBUG_ENTER("my_multi_malloc");
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va_start(args,myFlags);
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tot_length=0;
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while ((ptr=va_arg(args, char **)))
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{
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length=va_arg(args,uint);
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tot_length+=ALIGN_SIZE(length);
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#ifdef ALLOC_BARRIER
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tot_length+= ALIGN_SIZE(1);
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#endif
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}
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va_end(args);
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if (!(start=(char *) my_malloc(key, tot_length,myFlags)))
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DBUG_RETURN(0); /* purecov: inspected */
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va_start(args,myFlags);
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res=start;
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while ((ptr=va_arg(args, char **)))
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{
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*ptr=res;
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length=va_arg(args,uint);
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res+=ALIGN_SIZE(length);
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#ifdef ALLOC_BARRIER
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TRASH_FREE(res, ALIGN_SIZE(1));
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res+= ALIGN_SIZE(1);
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#endif
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}
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va_end(args);
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DBUG_RETURN((void*) start);
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}
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/*
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Same as my_multi_malloc, but each entry can be over 4G
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SYNOPSIS
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my_multi_malloc()
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myFlags Flags
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ptr1, length1 Multiple arguments terminated by null ptr
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ptr2, length2 ...
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...
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NULL
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*/
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void *my_multi_malloc_large(PSI_memory_key key, myf myFlags, ...)
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{
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va_list args;
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char **ptr,*start,*res;
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ulonglong tot_length,length;
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DBUG_ENTER("my_multi_malloc");
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va_start(args,myFlags);
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tot_length=0;
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while ((ptr=va_arg(args, char **)))
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{
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length=va_arg(args,ulonglong);
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tot_length+=ALIGN_SIZE(length);
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#ifdef ALLOC_BARRIER
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tot_length+= ALIGN_SIZE(1);
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#endif
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}
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va_end(args);
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if (!(start=(char *) my_malloc(key, (size_t) tot_length, myFlags)))
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DBUG_RETURN(0); /* purecov: inspected */
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va_start(args,myFlags);
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res=start;
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while ((ptr=va_arg(args, char **)))
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{
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*ptr=res;
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length=va_arg(args,ulonglong);
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res+=ALIGN_SIZE(length);
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#ifdef ALLOC_BARRIER
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TRASH_FREE(res, ALIGN_SIZE(1));
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res+= ALIGN_SIZE(1);
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#endif
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}
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va_end(args);
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DBUG_RETURN((void*) start);
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}
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