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thr_malloc.cpp
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2000-09-12
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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult 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 */
/* Mallocs for used in threads */
#include "mysql_priv.h"
extern "C" {
void sql_alloc_error_handler(void)
{
current_thd->fatal_error=1; /* purecov: inspected */
sql_print_error(ER(ER_OUT_OF_RESOURCES));
}
}
void init_sql_alloc(MEM_ROOT *mem_root, uint block_size, uint pre_alloc)
{
init_alloc_root(mem_root, block_size, pre_alloc);
mem_root->error_handler=sql_alloc_error_handler;
}
gptr sql_alloc(uint Size)
{
MEM_ROOT *root=my_pthread_getspecific_ptr(MEM_ROOT*,THR_MALLOC);
char *ptr= (char*) alloc_root(root,Size);
return ptr;
}
gptr sql_calloc(uint size)
{
gptr ptr;
if ((ptr=sql_alloc(size)))
bzero((char*) ptr,size);
return ptr;
}
char *sql_strdup(const char *str)
{
uint len=(uint) strlen(str)+1;
char *pos;
if ((pos= (char*) sql_alloc(len)))
memcpy(pos,str,len);
return pos;
}
char *sql_strmake(const char *str,uint len)
{
char *pos;
if ((pos= (char*) sql_alloc(len+1)))
{
memcpy(pos,str,len);
pos[len]=0;
}
return pos;
}
gptr sql_memdup(const void *ptr,uint len)
{
char *pos;
if ((pos= (char*) sql_alloc(len)))
memcpy(pos,ptr,len);
return pos;
}
void sql_element_free(void *ptr __attribute__((unused)))
{} /* purecov: deadcode */