latest sources commit

deps/mysqllite/mysys/mulalloc.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 */
+
+#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
+*/
+
+void* my_multi_malloc(myf myFlags, ...)
+{
+  va_list args;
+  char **ptr,*start,*res;
+  size_t 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((void*) start);
+}