/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
#ident "$Id$"
/*======
This file is part of TokuDB


Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved.

    TokuDB is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License, version 2,
    as published by the Free Software Foundation.

    TokuDB 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 TokuDB.  If not, see <http://www.gnu.org/licenses/>.

======= */

#ident "Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved."

#ifndef _HATOKU_DEFINES_H
#define _HATOKU_DEFINES_H

#include <my_config.h>
#define MYSQL_SERVER 1
#include "mysql_version.h"
#include "sql_table.h"
#include "handler.h"
#include "table.h"
#include "log.h"
#include "sql_class.h"
#include "sql_show.h"
#include "discover.h"
//#include <binlog.h>
#include "debug_sync.h"

#undef PACKAGE
#undef VERSION
#undef HAVE_DTRACE
#undef _DTRACE_VERSION

/* We define DTRACE after mysql_priv.h in case it disabled dtrace in the main server */
#ifdef HAVE_DTRACE
#define _DTRACE_VERSION 1
#else
#endif

#include <mysql/plugin.h>

#include <ctype.h>
#include <stdint.h>
#define __STDC_FORMAT_MACROS
#include <inttypes.h>
#if defined(_WIN32)
#include "misc.h"
#endif

#include "db.h"
#include "toku_os.h"
#include "toku_time.h"
#include "partitioned_counter.h"

#ifdef USE_PRAGMA_INTERFACE
#pragma interface               /* gcc class implementation */
#endif

#if 100000 <= MYSQL_VERSION_ID && MYSQL_VERSION_ID <= 100099
// mariadb 10.0
#define TOKU_USE_DB_TYPE_TOKUDB 1
#define TOKU_INCLUDE_ALTER_56 1
#define TOKU_INCLUDE_ROW_TYPE_COMPRESSION 0
#define TOKU_INCLUDE_XA 1
#define TOKU_INCLUDE_WRITE_FRM_DATA 0
#define TOKU_PARTITION_WRITE_FRM_DATA 0
#if defined(MARIADB_BASE_VERSION)
#define TOKU_INCLUDE_EXTENDED_KEYS 1
#endif
#define TOKU_INCLUDE_OPTION_STRUCTS 1
#define TOKU_OPTIMIZE_WITH_RECREATE 1
#define TOKU_CLUSTERING_IS_COVERING 1

#elif 50700 <= MYSQL_VERSION_ID && MYSQL_VERSION_ID <= 50799
// mysql 5.7 with no patches
#if TOKUDB_NOPATCH_CONFIG
#define TOKU_USE_DB_TYPE_UNKNOWN 1
#define TOKU_INCLUDE_ALTER_56 1
#define TOKU_INCLUDE_ROW_TYPE_COMPRESSION 0
#define TOKU_PARTITION_WRITE_FRM_DATA 0
#else
#error
#endif

#elif 50613 <= MYSQL_VERSION_ID && MYSQL_VERSION_ID <= 50699
// mysql 5.6 with no patches
#if TOKUDB_NOPATCH_CONFIG
#define TOKU_USE_DB_TYPE_UNKNOWN 1
#define TOKU_INCLUDE_ALTER_56 1    
#define TOKU_INCLUDE_ROW_TYPE_COMPRESSION 0
#define TOKU_INCLUDE_XA 0
#define TOKU_PARTITION_WRITE_FRM_DATA 0
#else
// mysql 5.6 with tokutek patches
#define TOKU_USE_DB_TYPE_TOKUDB 1           // has DB_TYPE_TOKUDB patch
#define TOKU_INCLUDE_ALTER_56 1
#define TOKU_INCLUDE_ROW_TYPE_COMPRESSION 1 // has tokudb row format compression patch
#define TOKU_INCLUDE_XA 1                   // has patch that fixes TC_LOG_MMAP code
#define TOKU_PARTITION_WRITE_FRM_DATA 0
#define TOKU_INCLUDE_WRITE_FRM_DATA 0
#define TOKU_INCLUDE_UPSERT 1               // has tokudb upsert patch
#if defined(HTON_SUPPORTS_EXTENDED_KEYS)
#define TOKU_INCLUDE_EXTENDED_KEYS 1
#endif
#endif
#define TOKU_OPTIMIZE_WITH_RECREATE 1

#elif 50500 <= MYSQL_VERSION_ID && MYSQL_VERSION_ID <= 50599
#define TOKU_USE_DB_TYPE_TOKUDB 1
#define TOKU_INCLUDE_ALTER_56 0         /* MariaDB 5.5 */
#define TOKU_INCLUDE_ALTER_55 0         /* MariaDB 5.5 */
#define TOKU_INCLUDE_ROW_TYPE_COMPRESSION 0 /* MariaDB 5.5 */
#define TOKU_INCLUDE_XA 1
#define TOKU_PARTITION_WRITE_FRM_DATA 0 /* MariaDB 5.5 */
#define TOKU_INCLUDE_WRITE_FRM_DATA 0   /* MariaDB 5.5 */
#define TOKU_INCLUDE_UPSERT 0           /* MariaDB 5.5 */
#if defined(MARIADB_BASE_VERSION)
#define TOKU_INCLUDE_EXTENDED_KEYS 1
#define TOKU_INCLUDE_OPTION_STRUCTS 1
#define TOKU_CLUSTERING_IS_COVERING 1
#define TOKU_INCLUDE_LOCK_TIMEOUT_QUERY_STRING 1
#else
#define TOKU_INCLUDE_LOCK_TIMEOUT_QUERY_STRING 1
#endif
#define TOKU_INCLUDE_HANDLERTON_HANDLE_FATAL_SIGNAL 0

#else
#error

#endif

#ifdef MARIADB_BASE_VERSION
// In MariaDB 5.3, thread progress reporting was introduced.
// Only include that functionality if we're using maria 5.3 +
#define HA_TOKUDB_HAS_THD_PROGRESS 1

// MariaDB supports thdvar memalloc correctly
#define TOKU_THDVAR_MEMALLOC_BUG 0
#else
// MySQL does not support thdvar memalloc correctly
// see http://bugs.mysql.com/bug.php?id=71759
#define TOKU_THDVAR_MEMALLOC_BUG 1
#endif

#if !defined(HA_CLUSTERING)
#define HA_CLUSTERING 0
#endif

#if !defined(HA_CLUSTERED_INDEX)
#define HA_CLUSTERED_INDEX 0
#endif

#if !defined(HA_CAN_WRITE_DURING_OPTIMIZE)
#define HA_CAN_WRITE_DURING_OPTIMIZE 0
#endif

#if !defined(HA_OPTION_CREATE_FROM_ENGINE)
#define HA_OPTION_CREATE_FROM_ENGINE 0
#endif

// In older (< 5.5) versions of MySQL and MariaDB, it is necessary to 
// use a read/write lock on the key_file array in a table share, 
// because table locks do not protect the race of some thread closing 
// a table and another calling ha_tokudb::info()
//
// In version 5.5 and, a higher layer "metadata lock" was introduced
// to synchronize threads that open, close, call info(), etc on tables.
// In these versions, we don't need the key_file lock
#if MYSQL_VERSION_ID < 50500
#define HA_TOKUDB_NEEDS_KEY_FILE_LOCK
#endif

//
// returns maximum length of dictionary name, such as key-NAME
// NAME_CHAR_LEN is max length of the key name, and have upper bound of 10 for key-
//
#define MAX_DICT_NAME_LEN NAME_CHAR_LEN + 10

// QQQ how to tune these?
#define HA_TOKUDB_RANGE_COUNT   100
/* extra rows for estimate_rows_upper_bound() */
#define HA_TOKUDB_EXTRA_ROWS    100

/* Bits for share->status */
#define STATUS_PRIMARY_KEY_INIT 0x1

#if defined(TOKUDB_VERSION_MAJOR) && defined(TOKUDB_VERSION_MINOR)
#define TOKUDB_PLUGIN_VERSION ((TOKUDB_VERSION_MAJOR << 8) + TOKUDB_VERSION_MINOR)
#else
#define TOKUDB_PLUGIN_VERSION 0
#endif

// Branch prediction macros.
// If supported by the compiler, will hint in instruction caching for likely
// branching. Should only be used where there is a very good idea of the correct
// branch heuristics as determined by profiling. Mostly copied from InnoDB.
// Use:
//   "if (TOKUDB_LIKELY(x))" where the chances of "x" evaluating true are higher
//   "if (TOKUDB_UNLIKELY(x))" where the chances of "x" evaluating false are higher
#if defined(__GNUC__) && (__GNUC__ > 2) && ! defined(__INTEL_COMPILER)

// Tell the compiler that 'expr' probably evaluates to 'constant'.
#define TOKUDB_EXPECT(expr,constant) __builtin_expect(expr, constant)

#else

#error "No TokuDB branch prediction operations in use!"
#define TOKUDB_EXPECT(expr,constant) (expr)

#endif // defined(__GNUC__) && (__GNUC__ > 2) && ! defined(__INTEL_COMPILER)

// Tell the compiler that cond is likely to hold
#define TOKUDB_LIKELY(cond) TOKUDB_EXPECT(cond, 1)

// Tell the compiler that cond is unlikely to hold
#define TOKUDB_UNLIKELY(cond) TOKUDB_EXPECT(cond, 0)

// Tell the compiler that the function/argument is unused
#define TOKUDB_UNUSED(_uu) _uu __attribute__((unused))
// mysql 5.6.15 removed the test macro, so we define our own
#define tokudb_test(e) ((e) ? 1 : 0)

inline const char* tokudb_thd_get_proc_info(const THD* thd) {
    return thd->proc_info;
}
inline void tokudb_thd_set_proc_info(THD* thd, const char* proc_info) {
    thd_proc_info(thd, proc_info);
}

// uint3korr reads 4 bytes and valgrind reports an error, so we use this function instead
inline uint tokudb_uint3korr(const uchar *a) {
    uchar b[4] = {};
    memcpy(b, a, 3);
    return uint3korr(b);
}

#endif // _HATOKU_DEFINES_H
