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Diffstat (limited to 'externals/mysql/mysys/my_malloc.c')
-rw-r--r--externals/mysql/mysys/my_malloc.c100
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diff --git a/externals/mysql/mysys/my_malloc.c b/externals/mysql/mysys/my_malloc.c
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+/* 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; 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 */
+
+ /* If compiled with DBUG, test for error injection. Described in my_sys.h. */
+ /* purecov: begin tested */
+ if (!(point= IF_DBUG(my_malloc_error_inject ? NULL :) (char*) malloc(size)))
+ {
+ IF_DBUG(if (my_malloc_error_inject) errno= ENOMEM;
+ my_malloc_error_inject= 0);
+ 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);
+ if (my_flags & MY_FAE)
+ exit(1);
+ }
+ else if (my_flags & MY_ZEROFILL)
+ bzero(point,size);
+ DBUG_PRINT("exit",("ptr: %p", point));
+ DBUG_RETURN((void*) point);
+ /* purecov: end */
+} /* my_malloc */
+
+
+ /* Free memory allocated with my_malloc */
+ /*ARGSUSED*/
+
+void my_no_flags_free(void* ptr)
+{
+ DBUG_ENTER("my_free");
+ DBUG_PRINT("my",("ptr: %p", 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);
+}