buf0types.h

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/*****************************************************************************

Copyright (c) 1995, 2013, 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 Street, Suite 500, Boston, MA 02110-1335 USA

*****************************************************************************/

/**************************************************/
#ifndef buf0types_h
#define buf0types_h

#if defined(INNODB_PAGE_ATOMIC_REF_COUNT) && defined(HAVE_ATOMIC_BUILTINS)
#define PAGE_ATOMIC_REF_COUNT
#endif /* INNODB_PAGE_ATOMIC_REF_COUNT && HAVE_ATOMIC_BUILTINS */

struct buf_page_t;
struct buf_block_t;
struct buf_chunk_t;
struct buf_pool_t;
struct buf_pool_stat_t;
struct buf_buddy_stat_t;
struct buf_dblwr_t;

typedef byte    buf_frame_t;

enum buf_flush_t {
        BUF_FLUSH_LRU = 0,              
        BUF_FLUSH_LIST,                 
        BUF_FLUSH_SINGLE_PAGE,          
        BUF_FLUSH_N_TYPES               
};

enum buf_remove_t {
        BUF_REMOVE_ALL_NO_WRITE,        
        BUF_REMOVE_FLUSH_NO_WRITE,      
        BUF_REMOVE_FLUSH_WRITE          
};

enum buf_io_fix {
        BUF_IO_NONE = 0,                
        BUF_IO_READ,                    
        BUF_IO_WRITE,                   
        BUF_IO_PIN                      
};

enum srv_checksum_algorithm_t {
        SRV_CHECKSUM_ALGORITHM_CRC32,           
        SRV_CHECKSUM_ALGORITHM_STRICT_CRC32,    
        SRV_CHECKSUM_ALGORITHM_INNODB,          
        SRV_CHECKSUM_ALGORITHM_STRICT_INNODB,   
        SRV_CHECKSUM_ALGORITHM_NONE,            
        SRV_CHECKSUM_ALGORITHM_STRICT_NONE      
};

/* @{ */
#define BUF_BUDDY_LOW_SHIFT     UNIV_ZIP_SIZE_SHIFT_MIN

#define BUF_BUDDY_LOW           (1U << BUF_BUDDY_LOW_SHIFT)

#define BUF_BUDDY_SIZES         (UNIV_PAGE_SIZE_SHIFT - BUF_BUDDY_LOW_SHIFT)

#define BUF_BUDDY_SIZES_MAX     (UNIV_PAGE_SIZE_SHIFT_MAX       \
                                - BUF_BUDDY_LOW_SHIFT)

#define BUF_BUDDY_HIGH  (BUF_BUDDY_LOW << BUF_BUDDY_SIZES)
/* @} */

#endif /* buf0types.h */