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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems, Inc.
*
* 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
*/
#include <config.h>
#include <cstring>
#include <drizzled/xid.h>
#include <drizzled/charset.h>
namespace drizzled {
void XID::set(uint64_t xid)
{
formatID= 1;
set(DRIZZLE_XID_PREFIX_LEN, 0, DRIZZLE_XID_PREFIX);
memcpy(data + DRIZZLE_XID_PREFIX_LEN, &server_id, sizeof(server_id));
my_xid tmp= xid;
memcpy(data + DRIZZLE_XID_OFFSET, &tmp, sizeof(tmp));
gtrid_length= DRIZZLE_XID_GTRID_LEN;
}
void XID::set(long g, long b, const char *d)
{
formatID= 1;
gtrid_length= g;
bqual_length= b;
memcpy(data, d, g+b);
}
bool XID::is_null() const
{
return formatID == -1;
}
void XID::set_null()
{
formatID= -1;
}
my_xid XID::quick_get_my_xid()
{
my_xid tmp;
memcpy(&tmp, data + DRIZZLE_XID_OFFSET, sizeof(tmp));
return tmp;
}
my_xid XID::get_my_xid()
{
return gtrid_length == DRIZZLE_XID_GTRID_LEN && bqual_length == 0 &&
!memcmp(data+DRIZZLE_XID_PREFIX_LEN, &server_id, sizeof(server_id)) &&
!memcmp(data, DRIZZLE_XID_PREFIX, DRIZZLE_XID_PREFIX_LEN) ?
quick_get_my_xid() : 0;
}
uint32_t XID::length() const
{
return sizeof(formatID)+sizeof(gtrid_length)+sizeof(bqual_length)+
gtrid_length+bqual_length;
}
} /* namespace drizzled */
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