From 72e7f011b29998d8a3e15eb5b381ef962af5fe5b Mon Sep 17 00:00:00 2001 From: Karen Arutyunov Date: Fri, 5 Apr 2019 10:30:58 +0300 Subject: Upgrade to 8.0.15 --- mysql/keycache.h | 156 ------------------------------------------------------- 1 file changed, 156 deletions(-) delete mode 100644 mysql/keycache.h (limited to 'mysql/keycache.h') diff --git a/mysql/keycache.h b/mysql/keycache.h deleted file mode 100644 index 6119f2c..0000000 --- a/mysql/keycache.h +++ /dev/null @@ -1,156 +0,0 @@ -/* Copyright (c) 2003, 2015, 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 St, Fifth Floor, Boston, MA 02110-1301 USA */ - -/* Key cache variable structures */ - -#ifndef _keycache_h -#define _keycache_h - -#include "my_sys.h" /* flush_type */ - -C_MODE_START - -/* declare structures that is used by st_key_cache */ - -struct st_block_link; -typedef struct st_block_link BLOCK_LINK; -struct st_hash_link; -typedef struct st_hash_link HASH_LINK; - -/* Thread specific variables */ -typedef struct st_keycache_thread_var -{ - mysql_cond_t suspend; - struct st_keycache_thread_var *next,**prev; - void *opt_info; -} st_keycache_thread_var; - -/* info about requests in a waiting queue */ -typedef struct st_keycache_wqueue -{ - st_keycache_thread_var *last_thread; /* circular list of waiting threads */ -} KEYCACHE_WQUEUE; - -#define CHANGED_BLOCKS_HASH 128 /* must be power of 2 */ - -/* - The key cache structure - It also contains read-only statistics parameters. -*/ - -typedef struct st_key_cache -{ - my_bool key_cache_inited; - my_bool in_resize; /* true during resize operation */ - my_bool resize_in_flush; /* true during flush of resize operation */ - my_bool can_be_used; /* usage of cache for read/write is allowed */ - size_t key_cache_mem_size; /* specified size of the cache memory */ - uint key_cache_block_size; /* size of the page buffer of a cache block */ - ulonglong min_warm_blocks; /* min number of warm blocks; */ - ulonglong age_threshold; /* age threshold for hot blocks */ - ulonglong keycache_time; /* total number of block link operations */ - uint hash_entries; /* max number of entries in the hash table */ - int hash_links; /* max number of hash links */ - int hash_links_used; /* number of hash links currently used */ - int disk_blocks; /* max number of blocks in the cache */ - ulong blocks_used; /* maximum number of concurrently used blocks */ - ulong blocks_unused; /* number of currently unused blocks */ - ulong blocks_changed; /* number of currently dirty blocks */ - ulong warm_blocks; /* number of blocks in warm sub-chain */ - ulong cnt_for_resize_op; /* counter to block resize operation */ - long blocks_available; /* number of blocks available in the LRU chain */ - HASH_LINK **hash_root; /* arr. of entries into hash table buckets */ - HASH_LINK *hash_link_root; /* memory for hash table links */ - HASH_LINK *free_hash_list; /* list of free hash links */ - BLOCK_LINK *free_block_list; /* list of free blocks */ - BLOCK_LINK *block_root; /* memory for block links */ - uchar *block_mem; /* memory for block buffers */ - BLOCK_LINK *used_last; /* ptr to the last block of the LRU chain */ - BLOCK_LINK *used_ins; /* ptr to the insertion block in LRU chain */ - mysql_mutex_t cache_lock; /* to lock access to the cache structure */ - KEYCACHE_WQUEUE resize_queue; /* threads waiting during resize operation */ - /* - Waiting for a zero resize count. Using a queue for symmetry though - only one thread can wait here. - */ - KEYCACHE_WQUEUE waiting_for_resize_cnt; - KEYCACHE_WQUEUE waiting_for_hash_link; /* waiting for a free hash link */ - KEYCACHE_WQUEUE waiting_for_block; /* requests waiting for a free block */ - BLOCK_LINK *changed_blocks[CHANGED_BLOCKS_HASH]; /* hash for dirty file bl.*/ - BLOCK_LINK *file_blocks[CHANGED_BLOCKS_HASH]; /* hash for other file bl.*/ - - /* - The following variables are and variables used to hold parameters for - initializing the key cache. - */ - - ulonglong param_buff_size; /* size the memory allocated for the cache */ - ulonglong param_block_size; /* size of the blocks in the key cache */ - ulonglong param_division_limit; /* min. percentage of warm blocks */ - ulonglong param_age_threshold; /* determines when hot block is downgraded */ - - /* Statistics variables. These are reset in reset_key_cache_counters(). */ - ulong global_blocks_changed; /* number of currently dirty blocks */ - ulonglong global_cache_w_requests;/* number of write requests (write hits) */ - ulonglong global_cache_write; /* number of writes from cache to files */ - ulonglong global_cache_r_requests;/* number of read requests (read hits) */ - ulonglong global_cache_read; /* number of reads from files to cache */ - - int blocks; /* max number of blocks in the cache */ - my_bool in_init; /* Set to 1 in MySQL during init/resize */ -} KEY_CACHE; - -/* The default key cache */ -extern KEY_CACHE dflt_key_cache_var, *dflt_key_cache; - -extern int init_key_cache(KEY_CACHE *keycache, ulonglong key_cache_block_size, - size_t use_mem, ulonglong division_limit, - ulonglong age_threshold); -extern int resize_key_cache(KEY_CACHE *keycache, - st_keycache_thread_var *thread_var, - ulonglong key_cache_block_size, - size_t use_mem, ulonglong division_limit, - ulonglong age_threshold); -extern uchar *key_cache_read(KEY_CACHE *keycache, - st_keycache_thread_var *thread_var, - File file, my_off_t filepos, int level, - uchar *buff, uint length, - uint block_length,int return_buffer); -extern int key_cache_insert(KEY_CACHE *keycache, - st_keycache_thread_var *thread_var, - File file, my_off_t filepos, int level, - uchar *buff, uint length); -extern int key_cache_write(KEY_CACHE *keycache, - st_keycache_thread_var *thread_var, - File file, my_off_t filepos, int level, - uchar *buff, uint length, - uint block_length,int force_write); -extern int flush_key_blocks(KEY_CACHE *keycache, - st_keycache_thread_var *thread_var, - int file, enum flush_type type); -extern void end_key_cache(KEY_CACHE *keycache, my_bool cleanup); - -/* Functions to handle multiple key caches */ -extern my_bool multi_keycache_init(void); -extern void multi_keycache_free(void); -extern KEY_CACHE *multi_key_cache_search(uchar *key, uint length); -extern my_bool multi_key_cache_set(const uchar *key, uint length, - KEY_CACHE *key_cache); -extern void multi_key_cache_change(KEY_CACHE *old_data, - KEY_CACHE *new_data); -extern int reset_key_cache_counters(const char *name, - KEY_CACHE *key_cache); -C_MODE_END -#endif /* _keycache_h */ -- cgit v1.1