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+/*****************************************************************************
+
+Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved.
+Copyright (c) 2008, 2009, Google Inc.
+
+Portions of this file contain modifications contributed and copyrighted by
+Google, Inc. Those modifications are gratefully acknowledged and are described
+briefly in the InnoDB documentation. The contributions by Google are
+incorporated with their permission, and subject to the conditions contained in
+the file COPYING.Google.
+
+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
+
+*****************************************************************************/
+/***********************************************************************
+
+Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved.
+Copyright (c) 2009, Percona Inc.
+
+Portions of this file contain modifications contributed and copyrighted
+by Percona Inc.. Those modifications are
+gratefully acknowledged and are described briefly in the InnoDB
+documentation. The contributions by Percona Inc. are incorporated with
+their permission, and subject to the conditions contained in the file
+COPYING.Percona.
+
+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
+
+***********************************************************************/
+
+/**************************************************//**
+@file include/srv0srv.h
+The server main program
+
+Created 10/10/1995 Heikki Tuuri
+*******************************************************/
+
+#ifndef srv0srv_h
+#define srv0srv_h
+
+#include "univ.i"
+#ifndef UNIV_HOTBACKUP
+#include "sync0sync.h"
+#include "os0sync.h"
+#include "que0types.h"
+#include "trx0types.h"
+
+extern const char* srv_main_thread_op_info;
+
+/** Prefix used by MySQL to indicate pre-5.1 table name encoding */
+extern const char srv_mysql50_table_name_prefix[9];
+
+/* When this event is set the lock timeout and InnoDB monitor
+thread starts running */
+extern os_event_t srv_lock_timeout_thread_event;
+
+/* If the last data file is auto-extended, we add this many pages to it
+at a time */
+#define SRV_AUTO_EXTEND_INCREMENT \
+ (srv_auto_extend_increment * ((1024 * 1024) / UNIV_PAGE_SIZE))
+
+/* This is set to TRUE if the MySQL user has set it in MySQL */
+extern ibool srv_lower_case_table_names;
+
+/* Mutex for locking srv_monitor_file */
+extern mutex_t srv_monitor_file_mutex;
+/* Temporary file for innodb monitor output */
+extern FILE* srv_monitor_file;
+/* Mutex for locking srv_dict_tmpfile.
+This mutex has a very high rank; threads reserving it should not
+be holding any InnoDB latches. */
+extern mutex_t srv_dict_tmpfile_mutex;
+/* Temporary file for output from the data dictionary */
+extern FILE* srv_dict_tmpfile;
+/* Mutex for locking srv_misc_tmpfile.
+This mutex has a very low rank; threads reserving it should not
+acquire any further latches or sleep before releasing this one. */
+extern mutex_t srv_misc_tmpfile_mutex;
+/* Temporary file for miscellanous diagnostic output */
+extern FILE* srv_misc_tmpfile;
+
+/* Server parameters which are read from the initfile */
+
+extern char* srv_data_home;
+#ifdef UNIV_LOG_ARCHIVE
+extern char* srv_arch_dir;
+#endif /* UNIV_LOG_ARCHIVE */
+
+/** store to its own file each table created by an user; data
+dictionary tables are in the system tablespace 0 */
+#ifndef UNIV_HOTBACKUP
+extern my_bool srv_file_per_table;
+#else
+extern ibool srv_file_per_table;
+#endif /* UNIV_HOTBACKUP */
+/** The file format to use on new *.ibd files. */
+extern ulint srv_file_format;
+/** Whether to check file format during startup. A value of
+DICT_TF_FORMAT_MAX + 1 means no checking ie. FALSE. The default is to
+set it to the highest format we support. */
+extern ulint srv_check_file_format_at_startup;
+/** Place locks to records only i.e. do not use next-key locking except
+on duplicate key checking and foreign key checking */
+extern ibool srv_locks_unsafe_for_binlog;
+#endif /* !UNIV_HOTBACKUP */
+
+extern ulint srv_n_data_files;
+extern char** srv_data_file_names;
+extern ulint* srv_data_file_sizes;
+extern ulint* srv_data_file_is_raw_partition;
+
+extern ibool srv_auto_extend_last_data_file;
+extern ulint srv_last_file_size_max;
+extern char** srv_log_group_home_dirs;
+#ifndef UNIV_HOTBACKUP
+extern ulong srv_auto_extend_increment;
+
+extern ibool srv_created_new_raw;
+
+extern ulint srv_n_log_groups;
+extern ulint srv_n_log_files;
+extern ulint srv_log_file_size;
+extern ulint srv_log_buffer_size;
+extern ulong srv_flush_log_at_trx_commit;
+extern char srv_adaptive_flushing;
+
+
+/* The sort order table of the MySQL latin1_swedish_ci character set
+collation */
+extern const byte* srv_latin1_ordering;
+#ifndef UNIV_HOTBACKUP
+extern my_bool srv_use_sys_malloc;
+#else
+extern ibool srv_use_sys_malloc;
+#endif /* UNIV_HOTBACKUP */
+extern ulint srv_buf_pool_size; /*!< requested size in bytes */
+extern ulint srv_buf_pool_old_size; /*!< previously requested size */
+extern ulint srv_buf_pool_curr_size; /*!< current size in bytes */
+extern ulint srv_mem_pool_size;
+extern ulint srv_lock_table_size;
+
+extern ulint srv_n_file_io_threads;
+extern ulong srv_read_ahead_threshold;
+extern ulint srv_n_read_io_threads;
+extern ulint srv_n_write_io_threads;
+
+/* Number of IO operations per second the server can do */
+extern ulong srv_io_capacity;
+/* Returns the number of IO operations that is X percent of the
+capacity. PCT_IO(5) -> returns the number of IO operations that
+is 5% of the max where max is srv_io_capacity. */
+#define PCT_IO(p) ((ulong) (srv_io_capacity * ((double) p / 100.0)))
+
+#ifdef UNIV_LOG_ARCHIVE
+extern ibool srv_log_archive_on;
+extern ibool srv_archive_recovery;
+extern dulint srv_archive_recovery_limit_lsn;
+#endif /* UNIV_LOG_ARCHIVE */
+
+extern char* srv_file_flush_method_str;
+extern ulint srv_unix_file_flush_method;
+extern ulint srv_win_file_flush_method;
+
+extern ulint srv_max_n_open_files;
+
+extern ulint srv_max_dirty_pages_pct;
+
+extern ulint srv_force_recovery;
+extern ulong srv_thread_concurrency;
+
+extern ulint srv_max_n_threads;
+
+extern lint srv_conc_n_threads;
+
+extern ulint srv_fast_shutdown; /* If this is 1, do not do a
+ purge and index buffer merge.
+ If this 2, do not even flush the
+ buffer pool to data files at the
+ shutdown: we effectively 'crash'
+ InnoDB (but lose no committed
+ transactions). */
+extern ibool srv_innodb_status;
+
+extern unsigned long long srv_stats_sample_pages;
+
+extern ibool srv_use_doublewrite_buf;
+extern ibool srv_use_checksums;
+
+extern ibool srv_set_thread_priorities;
+extern int srv_query_thread_priority;
+
+extern ulong srv_max_buf_pool_modified_pct;
+extern ulong srv_max_purge_lag;
+
+extern ulong srv_replication_delay;
+/*-------------------------------------------*/
+
+extern ulint srv_n_rows_inserted;
+extern ulint srv_n_rows_updated;
+extern ulint srv_n_rows_deleted;
+extern ulint srv_n_rows_read;
+
+extern ibool srv_print_innodb_monitor;
+extern ibool srv_print_innodb_lock_monitor;
+extern ibool srv_print_innodb_tablespace_monitor;
+extern ibool srv_print_verbose_log;
+extern ibool srv_print_innodb_table_monitor;
+
+extern ibool srv_lock_timeout_and_monitor_active;
+extern ibool srv_error_monitor_active;
+
+extern ulong srv_n_spin_wait_rounds;
+extern ulong srv_n_free_tickets_to_enter;
+extern ulong srv_thread_sleep_delay;
+extern ulong srv_spin_wait_delay;
+extern ibool srv_priority_boost;
+
+extern ulint srv_mem_pool_size;
+extern ulint srv_lock_table_size;
+
+#ifdef UNIV_DEBUG
+extern ibool srv_print_thread_releases;
+extern ibool srv_print_lock_waits;
+extern ibool srv_print_buf_io;
+extern ibool srv_print_log_io;
+extern ibool srv_print_latch_waits;
+#else /* UNIV_DEBUG */
+# define srv_print_thread_releases FALSE
+# define srv_print_lock_waits FALSE
+# define srv_print_buf_io FALSE
+# define srv_print_log_io FALSE
+# define srv_print_latch_waits FALSE
+#endif /* UNIV_DEBUG */
+
+extern ulint srv_activity_count;
+extern ulint srv_fatal_semaphore_wait_threshold;
+extern ulint srv_dml_needed_delay;
+
+extern mutex_t* kernel_mutex_temp;/* mutex protecting the server, trx structs,
+ query threads, and lock table: we allocate
+ it from dynamic memory to get it to the
+ same DRAM page as other hotspot semaphores */
+#define kernel_mutex (*kernel_mutex_temp)
+
+#define SRV_MAX_N_IO_THREADS 130
+
+/* Array of English strings describing the current state of an
+i/o handler thread */
+extern const char* srv_io_thread_op_info[];
+extern const char* srv_io_thread_function[];
+
+/* the number of the log write requests done */
+extern ulint srv_log_write_requests;
+
+/* the number of physical writes to the log performed */
+extern ulint srv_log_writes;
+
+/* amount of data written to the log files in bytes */
+extern ulint srv_os_log_written;
+
+/* amount of writes being done to the log files */
+extern ulint srv_os_log_pending_writes;
+
+/* we increase this counter, when there we don't have enough space in the
+log buffer and have to flush it */
+extern ulint srv_log_waits;
+
+/* variable that counts amount of data read in total (in bytes) */
+extern ulint srv_data_read;
+
+/* here we count the amount of data written in total (in bytes) */
+extern ulint srv_data_written;
+
+/* this variable counts the amount of times, when the doublewrite buffer
+was flushed */
+extern ulint srv_dblwr_writes;
+
+/* here we store the number of pages that have been flushed to the
+doublewrite buffer */
+extern ulint srv_dblwr_pages_written;
+
+/* in this variable we store the number of write requests issued */
+extern ulint srv_buf_pool_write_requests;
+
+/* here we store the number of times when we had to wait for a free page
+in the buffer pool. It happens when the buffer pool is full and we need
+to make a flush, in order to be able to read or create a page. */
+extern ulint srv_buf_pool_wait_free;
+
+/* variable to count the number of pages that were written from the
+buffer pool to disk */
+extern ulint srv_buf_pool_flushed;
+
+/** Number of buffer pool reads that led to the
+reading of a disk page */
+extern ulint srv_buf_pool_reads;
+/** Number of sequential read-aheads */
+extern ulint srv_read_ahead_seq;
+/** Number of random read-aheads */
+extern ulint srv_read_ahead_rnd;
+
+/** Status variables to be passed to MySQL */
+typedef struct export_var_struct export_struc;
+
+/** Status variables to be passed to MySQL */
+extern export_struc export_vars;
+
+/** The server system */
+typedef struct srv_sys_struct srv_sys_t;
+
+/** The server system */
+extern srv_sys_t* srv_sys;
+#endif /* !UNIV_HOTBACKUP */
+
+/** Types of raw partitions in innodb_data_file_path */
+enum {
+ SRV_NOT_RAW = 0, /*!< Not a raw partition */
+ SRV_NEW_RAW, /*!< A 'newraw' partition, only to be
+ initialized */
+ SRV_OLD_RAW /*!< An initialized raw partition */
+};
+
+/** Alternatives for the file flush option in Unix; see the InnoDB manual
+about what these mean */
+enum {
+ SRV_UNIX_FSYNC = 1, /*!< fsync, the default */
+ SRV_UNIX_O_DSYNC, /*!< open log files in O_SYNC mode */
+ SRV_UNIX_LITTLESYNC, /*!< do not call os_file_flush()
+ when writing data files, but do flush
+ after writing to log files */
+ SRV_UNIX_NOSYNC, /*!< do not flush after writing */
+ SRV_UNIX_O_DIRECT /*!< invoke os_file_set_nocache() on
+ data files */
+};
+
+/** Alternatives for file i/o in Windows */
+enum {
+ SRV_WIN_IO_NORMAL = 1, /*!< buffered I/O */
+ SRV_WIN_IO_UNBUFFERED /*!< unbuffered I/O; this is the default */
+};
+
+/** Alternatives for srv_force_recovery. Non-zero values are intended
+to help the user get a damaged database up so that he can dump intact
+tables and rows with SELECT INTO OUTFILE. The database must not otherwise
+be used with these options! A bigger number below means that all precautions
+of lower numbers are included. */
+enum {
+ SRV_FORCE_IGNORE_CORRUPT = 1, /*!< let the server run even if it
+ detects a corrupt page */
+ SRV_FORCE_NO_BACKGROUND = 2, /*!< prevent the main thread from
+ running: if a crash would occur
+ in purge, this prevents it */
+ SRV_FORCE_NO_TRX_UNDO = 3, /*!< do not run trx rollback after
+ recovery */
+ SRV_FORCE_NO_IBUF_MERGE = 4, /*!< prevent also ibuf operations:
+ if they would cause a crash, better
+ not do them */
+ SRV_FORCE_NO_UNDO_LOG_SCAN = 5, /*!< do not look at undo logs when
+ starting the database: InnoDB will
+ treat even incomplete transactions
+ as committed */
+ SRV_FORCE_NO_LOG_REDO = 6 /*!< do not do the log roll-forward
+ in connection with recovery */
+};
+
+#ifndef UNIV_HOTBACKUP
+/** Types of threads existing in the system. */
+enum srv_thread_type {
+ SRV_COM = 1, /**< threads serving communication and queries */
+ SRV_CONSOLE, /**< thread serving console */
+ SRV_WORKER, /**< threads serving parallelized queries and
+ queries released from lock wait */
+#if 0
+ /* Utility threads */
+ SRV_BUFFER, /**< thread flushing dirty buffer blocks */
+ SRV_RECOVERY, /**< threads finishing a recovery */
+ SRV_INSERT, /**< thread flushing the insert buffer to disk */
+#endif
+ SRV_MASTER /**< the master thread, (whose type number must
+ be biggest) */
+};
+
+/*********************************************************************//**
+Boots Innobase server.
+@return DB_SUCCESS or error code */
+UNIV_INTERN
+ulint
+srv_boot(void);
+/*==========*/
+/*********************************************************************//**
+Initializes the server. */
+UNIV_INTERN
+void
+srv_init(void);
+/*==========*/
+/*********************************************************************//**
+Frees the OS fast mutex created in srv_boot(). */
+UNIV_INTERN
+void
+srv_free(void);
+/*==========*/
+/*********************************************************************//**
+Initializes the synchronization primitives, memory system, and the thread
+local storage. */
+UNIV_INTERN
+void
+srv_general_init(void);
+/*==================*/
+/*********************************************************************//**
+Gets the number of threads in the system.
+@return sum of srv_n_threads[] */
+UNIV_INTERN
+ulint
+srv_get_n_threads(void);
+/*===================*/
+/*********************************************************************//**
+Returns the calling thread type.
+@return SRV_COM, ... */
+
+enum srv_thread_type
+srv_get_thread_type(void);
+/*=====================*/
+/*********************************************************************//**
+Sets the info describing an i/o thread current state. */
+UNIV_INTERN
+void
+srv_set_io_thread_op_info(
+/*======================*/
+ ulint i, /*!< in: the 'segment' of the i/o thread */
+ const char* str); /*!< in: constant char string describing the
+ state */
+/*********************************************************************//**
+Releases threads of the type given from suspension in the thread table.
+NOTE! The server mutex has to be reserved by the caller!
+@return number of threads released: this may be less than n if not
+enough threads were suspended at the moment */
+UNIV_INTERN
+ulint
+srv_release_threads(
+/*================*/
+ enum srv_thread_type type, /*!< in: thread type */
+ ulint n); /*!< in: number of threads to release */
+/*********************************************************************//**
+The master thread controlling the server.
+@return a dummy parameter */
+UNIV_INTERN
+os_thread_ret_t
+srv_master_thread(
+/*==============*/
+ void* arg); /*!< in: a dummy parameter required by
+ os_thread_create */
+/*******************************************************************//**
+Tells the Innobase server that there has been activity in the database
+and wakes up the master thread if it is suspended (not sleeping). Used
+in the MySQL interface. Note that there is a small chance that the master
+thread stays suspended (we do not protect our operation with the kernel
+mutex, for performace reasons). */
+UNIV_INTERN
+void
+srv_active_wake_master_thread(void);
+/*===============================*/
+/*******************************************************************//**
+Wakes up the master thread if it is suspended or being suspended. */
+UNIV_INTERN
+void
+srv_wake_master_thread(void);
+/*========================*/
+/*********************************************************************//**
+Puts an OS thread to wait if there are too many concurrent threads
+(>= srv_thread_concurrency) inside InnoDB. The threads wait in a FIFO queue. */
+UNIV_INTERN
+void
+srv_conc_enter_innodb(
+/*==================*/
+ trx_t* trx); /*!< in: transaction object associated with the
+ thread */
+/*********************************************************************//**
+This lets a thread enter InnoDB regardless of the number of threads inside
+InnoDB. This must be called when a thread ends a lock wait. */
+UNIV_INTERN
+void
+srv_conc_force_enter_innodb(
+/*========================*/
+ trx_t* trx); /*!< in: transaction object associated with the
+ thread */
+/*********************************************************************//**
+This must be called when a thread exits InnoDB in a lock wait or at the
+end of an SQL statement. */
+UNIV_INTERN
+void
+srv_conc_force_exit_innodb(
+/*=======================*/
+ trx_t* trx); /*!< in: transaction object associated with the
+ thread */
+/*********************************************************************//**
+This must be called when a thread exits InnoDB. */
+UNIV_INTERN
+void
+srv_conc_exit_innodb(
+/*=================*/
+ trx_t* trx); /*!< in: transaction object associated with the
+ thread */
+/***************************************************************//**
+Puts a MySQL OS thread to wait for a lock to be released. If an error
+occurs during the wait trx->error_state associated with thr is
+!= DB_SUCCESS when we return. DB_LOCK_WAIT_TIMEOUT and DB_DEADLOCK
+are possible errors. DB_DEADLOCK is returned if selective deadlock
+resolution chose this transaction as a victim. */
+UNIV_INTERN
+void
+srv_suspend_mysql_thread(
+/*=====================*/
+ que_thr_t* thr); /*!< in: query thread associated with the MySQL
+ OS thread */
+/********************************************************************//**
+Releases a MySQL OS thread waiting for a lock to be released, if the
+thread is already suspended. */
+UNIV_INTERN
+void
+srv_release_mysql_thread_if_suspended(
+/*==================================*/
+ que_thr_t* thr); /*!< in: query thread associated with the
+ MySQL OS thread */
+/*********************************************************************//**
+A thread which wakes up threads whose lock wait may have lasted too long.
+This also prints the info output by various InnoDB monitors.
+@return a dummy parameter */
+UNIV_INTERN
+os_thread_ret_t
+srv_lock_timeout_and_monitor_thread(
+/*================================*/
+ void* arg); /*!< in: a dummy parameter required by
+ os_thread_create */
+/*********************************************************************//**
+A thread which prints warnings about semaphore waits which have lasted
+too long. These can be used to track bugs which cause hangs.
+@return a dummy parameter */
+UNIV_INTERN
+os_thread_ret_t
+srv_error_monitor_thread(
+/*=====================*/
+ void* arg); /*!< in: a dummy parameter required by
+ os_thread_create */
+/******************************************************************//**
+Outputs to a file the output of the InnoDB Monitor. */
+UNIV_INTERN
+void
+srv_printf_innodb_monitor(
+/*======================*/
+ FILE* file, /*!< in: output stream */
+ ulint* trx_start, /*!< out: file position of the start of
+ the list of active transactions */
+ ulint* trx_end); /*!< out: file position of the end of
+ the list of active transactions */
+
+/******************************************************************//**
+Function to pass InnoDB status variables to MySQL */
+UNIV_INTERN
+void
+srv_export_innodb_status(void);
+/*==========================*/
+
+/** Thread slot in the thread table */
+typedef struct srv_slot_struct srv_slot_t;
+
+/** Thread table is an array of slots */
+typedef srv_slot_t srv_table_t;
+
+/** Status variables to be passed to MySQL */
+struct export_var_struct{
+ ulint innodb_data_pending_reads; /*!< Pending reads */
+ ulint innodb_data_pending_writes; /*!< Pending writes */
+ ulint innodb_data_pending_fsyncs; /*!< Pending fsyncs */
+ ulint innodb_data_fsyncs; /*!< Number of fsyncs so far */
+ ulint innodb_data_read; /*!< Data bytes read */
+ ulint innodb_data_writes; /*!< I/O write requests */
+ ulint innodb_data_written; /*!< Data bytes written */
+ ulint innodb_data_reads; /*!< I/O read requests */
+ ulint innodb_buffer_pool_pages_total; /*!< Buffer pool size */
+ ulint innodb_buffer_pool_pages_data; /*!< Data pages */
+ ulint innodb_buffer_pool_pages_dirty; /*!< Dirty data pages */
+ ulint innodb_buffer_pool_pages_misc; /*!< Miscellanous pages */
+ ulint innodb_buffer_pool_pages_free; /*!< Free pages */
+#ifdef UNIV_DEBUG
+ ulint innodb_buffer_pool_pages_latched; /*!< Latched pages */
+#endif /* UNIV_DEBUG */
+ ulint innodb_buffer_pool_read_requests; /*!< buf_pool->n_page_gets */
+ ulint innodb_buffer_pool_reads; /*!< srv_buf_pool_reads */
+ ulint innodb_buffer_pool_wait_free; /*!< srv_buf_pool_wait_free */
+ ulint innodb_buffer_pool_pages_flushed; /*!< srv_buf_pool_flushed */
+ ulint innodb_buffer_pool_write_requests;/*!< srv_buf_pool_write_requests */
+ ulint innodb_buffer_pool_read_ahead_seq;/*!< srv_read_ahead_seq */
+ ulint innodb_buffer_pool_read_ahead_rnd;/*!< srv_read_ahead_rnd */
+ ulint innodb_dblwr_pages_written; /*!< srv_dblwr_pages_written */
+ ulint innodb_dblwr_writes; /*!< srv_dblwr_writes */
+ ibool innodb_have_atomic_builtins; /*!< HAVE_ATOMIC_BUILTINS */
+ ulint innodb_log_waits; /*!< srv_log_waits */
+ ulint innodb_log_write_requests; /*!< srv_log_write_requests */
+ ulint innodb_log_writes; /*!< srv_log_writes */
+ ulint innodb_os_log_written; /*!< srv_os_log_written */
+ ulint innodb_os_log_fsyncs; /*!< fil_n_log_flushes */
+ ulint innodb_os_log_pending_writes; /*!< srv_os_log_pending_writes */
+ ulint innodb_os_log_pending_fsyncs; /*!< fil_n_pending_log_flushes */
+ ulint innodb_page_size; /*!< UNIV_PAGE_SIZE */
+ ulint innodb_pages_created; /*!< buf_pool->n_pages_created */
+ ulint innodb_pages_read; /*!< buf_pool->n_pages_read */
+ ulint innodb_pages_written; /*!< buf_pool->n_pages_written */
+ ulint innodb_row_lock_waits; /*!< srv_n_lock_wait_count */
+ ulint innodb_row_lock_current_waits; /*!< srv_n_lock_wait_current_count */
+ ib_int64_t innodb_row_lock_time; /*!< srv_n_lock_wait_time
+ / 1000 */
+ ulint innodb_row_lock_time_avg; /*!< srv_n_lock_wait_time
+ / 1000
+ / srv_n_lock_wait_count */
+ ulint innodb_row_lock_time_max; /*!< srv_n_lock_max_wait_time
+ / 1000 */
+ ulint innodb_rows_read; /*!< srv_n_rows_read */
+ ulint innodb_rows_inserted; /*!< srv_n_rows_inserted */
+ ulint innodb_rows_updated; /*!< srv_n_rows_updated */
+ ulint innodb_rows_deleted; /*!< srv_n_rows_deleted */
+};
+
+/** The server system struct */
+struct srv_sys_struct{
+ srv_table_t* threads; /*!< server thread table */
+ UT_LIST_BASE_NODE_T(que_thr_t)
+ tasks; /*!< task queue */
+};
+
+extern ulint srv_n_threads_active[];
+#else /* !UNIV_HOTBACKUP */
+# define srv_use_checksums TRUE
+# define srv_use_adaptive_hash_indexes FALSE
+# define srv_force_recovery 0UL
+# define srv_set_io_thread_op_info(t,info) ((void) 0)
+# define srv_is_being_started 0
+# define srv_win_file_flush_method SRV_WIN_IO_UNBUFFERED
+# define srv_unix_file_flush_method SRV_UNIX_O_DSYNC
+# define srv_start_raw_disk_in_use 0
+# define srv_file_per_table 1
+#endif /* !UNIV_HOTBACKUP */
+
+#endif