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Initial HINT structure added

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This commit is contained in:
Mark Riddoch 2014-07-16 18:29:20 +01:00
parent 0dcc23a33c
commit 944ee9134c
3 changed files with 63 additions and 0 deletions
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1
server/core/buffer.c
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@ -82,6 +82,7 @@ SHARED_BUF *sbuf;
sbuf->refcount = 1;
rval->sbuf = sbuf;
rval->next = NULL;
rval->hint = NULL;
rval->gwbuf_type = GWBUF_TYPE_UNDEFINED;
rval->command = 0;
CHK_GWBUF(rval);

3
server/include/buffer.h
View File

@ -38,10 +38,12 @@
* 10/06/2013 Mark Riddoch Initial implementation
* 11/07/2013 Mark Riddoch Addition of reference count in the gwbuf
* 16/07/2013 Massimiliano Pinto Added command type for the queue
* 10/07/2014 Mark Riddoch Addition of hints
*
* @endverbatim
*/
#include <skygw_debug.h>
#include <hints.h>
typedef enum
@ -88,6 +90,7 @@ typedef struct gwbuf {
SHARED_BUF *sbuf; /*< The shared buffer with the real data */
int command;/*< The command type for the queue */
gwbuf_type_t gwbuf_type; /*< buffer's data type information */
HINT *hint; /*< Hint data for this buffer */
} GWBUF;
/*<

59
server/include/hint.h Normal file
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@ -0,0 +1,59 @@
#ifndef _HINT_H
#define _ATOMIC_H
/*
* This file is distributed as part of MaxScale. It 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.
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Copyright SkySQL Ab 2014
*/
/**
* @file hint.h The generic hint data that may be attached to buffers
*
* @verbatim
* Revision History
*
* Date Who Description
* 10/07/14 Mark Riddoch Initial implementation
*
* @endverbatim
*/
/**
* The types of hint that are supported by the generic hinting mechanism.
*/
typedef enum {
HINT_ROUTE_TO_MASTER = 1,
HINT_ROUTE_TO_SLAVE,
HINT_ROUTE_TO_NAMED_SERVER,
HINT_ROUTE_TO_UPTODATE_SERVER
} HINT_TYPE;
/**
* A generic hint.
*
* A hint has a type associated with it and may optionally have hint
* specific data.
* Multiple hints may be attached to a single buffer.
*/
typedef struct hint {
HINT_TYPE type; /*< The Type of hint */
void *data; /*< Type sepecific data */
unsigned int dsize; /*< Size of the hint data */
struct hint *next; /*< Another hint for this buffer */
} HINT;
extern HINT *hint_alloc(HINT_TYPE, void *, unsigned int);
extern void hint_free(HINT *);
#endif