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/*
Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
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; version 2 of the License.
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef SAFEMALLOC /* We don't need SAFEMALLOC here */
#undef SAFEMALLOC
#endif
#include "mysys_priv.h"
#include "mysys_err.h"
#include <m_string.h>
/* My memory allocator */
void *my_malloc(size_t size, myf my_flags)
{
void* point;
DBUG_ENTER("my_malloc");
DBUG_PRINT("my",("size: %lu my_flags: %d", (ulong) size, my_flags));
if (!size)
size=1; /* Safety */
point= (char *) malloc(size);
DBUG_EXECUTE_IF("simulate_out_of_memory",
{
free(point);
point= NULL;
});
if (point == NULL)
{
my_errno=errno;
if (my_flags & MY_FAE)
error_handler_hook=fatal_error_handler_hook;
if (my_flags & (MY_FAE+MY_WME))
my_error(EE_OUTOFMEMORY, MYF(ME_BELL+ME_WAITTANG+ME_NOREFRESH),size);
DBUG_EXECUTE_IF("simulate_out_of_memory",
DBUG_SET("-d,simulate_out_of_memory"););
if (my_flags & MY_FAE)
exit(1);
}
else if (my_flags & MY_ZEROFILL)
bzero(point,size);
DBUG_PRINT("exit",("ptr: 0x%lx", (long) point));
DBUG_RETURN((void*) point);
} /* my_malloc */
/* Free memory allocated with my_malloc */
/*ARGSUSED*/
void my_no_flags_free(void* ptr)
{
DBUG_ENTER("my_free");
DBUG_PRINT("my",("ptr: 0x%lx", (long) ptr));
if (ptr)
free(ptr);
DBUG_VOID_RETURN;
} /* my_free */
/* malloc and copy */
void* my_memdup(const void *from, size_t length, myf my_flags)
{
void *ptr;
if ((ptr= my_malloc(length,my_flags)) != 0)
memcpy(ptr, from, length);
return(ptr);
}
char *my_strdup(const char *from, myf my_flags)
{
char *ptr;
size_t length= strlen(from)+1;
if ((ptr= (char*) my_malloc(length, my_flags)))
memcpy((uchar*) ptr, (uchar*) from,(size_t) length);
return(ptr);
}
char *my_strndup(const char *from, size_t length, myf my_flags)
{
char *ptr;
if ((ptr= (char*) my_malloc(length+1,my_flags)) != 0)
{
memcpy((uchar*) ptr, (uchar*) from, length);
ptr[length]=0;
}
return((char*) ptr);
}
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