diff options
Diffstat (limited to 'src/mysql/raid.h')
| -rw-r--r-- | src/mysql/raid.h | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/src/mysql/raid.h b/src/mysql/raid.h deleted file mode 100644 index c840afcba..000000000 --- a/src/mysql/raid.h +++ /dev/null @@ -1,159 +0,0 @@ -/* Copyright (C) 2000 MySQL AB - - 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; either version 2 of the License, or - (at your option) any later version. - - 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 */ - -/* Parser needs these defines always, even if USE_RAID is not defined */ -#define RAID_TYPE_0 1 /* Striping */ -#define RAID_TYPE_x 2 /* Some new modes */ -#define RAID_TYPE_y 3 - -#define RAID_DEFAULT_CHUNKS 4 -#define RAID_DEFAULT_CHUNKSIZE 256*1024 /* 256kB */ - -C_MODE_START -#define my_raid_type(raid_type) raid_type_string[(int)(raid_type)] -extern const char *raid_type_string[]; -C_MODE_END - -#ifdef DONT_USE_RAID -#undef USE_RAID -#endif -#if defined(USE_RAID) - -#include "my_dir.h" - -/* Trap all occurences of my_...() in source and use our wrapper around this function */ - -#ifdef MAP_TO_USE_RAID -#define my_read(A,B,C,D) my_raid_read(A,B,C,D) -#define my_write(A,B,C,D) my_raid_write(A,B,C,D) -#define my_pwrite(A,B,C,D,E) my_raid_pwrite(A,B,C,D,E) -#define my_pread(A,B,C,D,E) my_raid_pread(A,B,C,D,E) -#define my_chsize(A,B,C,D) my_raid_chsize(A,B,C,D) -#define my_close(A,B) my_raid_close(A,B) -#define my_tell(A,B) my_raid_tell(A,B) -#define my_seek(A,B,C,D) my_raid_seek(A,B,C,D) -#define my_lock(A,B,C,D,E) my_raid_lock(A,B,C,D,E) -#define my_fstat(A,B,C) my_raid_fstat(A,B,C) -#endif /* MAP_TO_USE_RAID */ - -#ifdef __cplusplus -extern "C" { -#endif - - void init_raid(void); - void end_raid(void); - - bool is_raid(File fd); - File my_raid_create(const char *FileName, int CreateFlags, int access_flags, - uint raid_type, uint raid_chunks, ulong raid_chunksize, - myf MyFlags); - File my_raid_open(const char *FileName, int Flags, - uint raid_type, uint raid_chunks, ulong raid_chunksize, - myf MyFlags); - int my_raid_rename(const char *from, const char *to, uint raid_chunks, - myf MyFlags); - int my_raid_delete(const char *from, uint raid_chunks, myf MyFlags); - int my_raid_redel(const char *old_name, const char *new_name, - uint raid_chunks, myf MyFlags); - - my_off_t my_raid_seek(File fd, my_off_t pos, int whence, myf MyFlags); - my_off_t my_raid_tell(File fd, myf MyFlags); - - uint my_raid_write(File,const byte *Buffer, uint Count, myf MyFlags); - uint my_raid_read(File Filedes, byte *Buffer, uint Count, myf MyFlags); - - uint my_raid_pread(File Filedes, byte *Buffer, uint Count, my_off_t offset, - myf MyFlags); - uint my_raid_pwrite(int Filedes, const byte *Buffer, uint Count, - my_off_t offset, myf MyFlags); - - int my_raid_lock(File,int locktype, my_off_t start, my_off_t length, - myf MyFlags); - int my_raid_chsize(File fd, my_off_t newlength, int filler, myf MyFlags); - int my_raid_close(File, myf MyFlags); - int my_raid_fstat(int Filedes, struct stat *buf, myf MyFlags); - -#ifdef __cplusplus -} - -#ifdef USE_PRAGMA_INTERFACE -#pragma interface /* gcc class implementation */ -#endif - -class RaidName { - public: - RaidName(const char *FileName); - ~RaidName(); - bool IsRaid(); - int Rename(const char * from, const char * to, myf MyFlags); - private: - uint _raid_type; /* RAID_TYPE_0 or RAID_TYPE_1 or RAID_TYPE_5 */ - uint _raid_chunks; /* 1..n */ - ulong _raid_chunksize; /* 1..n in bytes */ -}; - -class RaidFd { - public: - RaidFd(uint raid_type, uint raid_chunks , ulong raid_chunksize); - ~RaidFd(); - File Create(const char *FileName, int CreateFlags, int access_flags, - myf MyFlags); - File Open(const char *FileName, int Flags, myf MyFlags); - my_off_t Seek(my_off_t pos,int whence,myf MyFlags); - my_off_t Tell(myf MyFlags); - int Write(const byte *Buffer, uint Count, myf MyFlags); - int Read(const byte *Buffer, uint Count, myf MyFlags); - int Lock(int locktype, my_off_t start, my_off_t length, myf MyFlags); - int Chsize(File fd, my_off_t newlength, int filler, myf MyFlags); - int Fstat(int fd, MY_STAT *stat_area, myf MyFlags ); - int Close(myf MyFlags); - static bool IsRaid(File fd); - static DYNAMIC_ARRAY _raid_map; /* Map of RaidFD* */ - private: - - uint _raid_type; /* RAID_TYPE_0 or RAID_TYPE_1 or RAID_TYPE_5 */ - uint _raid_chunks; /* 1..n */ - ulong _raid_chunksize; /* 1..n in bytes */ - - ulong _total_block; /* We are operating with block no x (can be 0..many). */ - uint _this_block; /* can be 0.._raid_chunks */ - uint _remaining_bytes; /* Maximum bytes that can be written in this block */ - - my_off_t _position; - my_off_t _size; /* Cached file size for faster seek(SEEK_END) */ - File _fd; - File *_fd_vector; /* Array of File */ - off_t *_seek_vector; /* Array of cached seek positions */ - - inline void Calculate() - { - DBUG_ENTER("RaidFd::_Calculate"); - DBUG_PRINT("info",("_position: %lu _raid_chunksize: %d, _size: %lu", - (ulong) _position, _raid_chunksize, (ulong) _size)); - - _total_block = (ulong) (_position / _raid_chunksize); - _this_block = _total_block % _raid_chunks; /* can be 0.._raid_chunks */ - _remaining_bytes = (uint) (_raid_chunksize - - (_position - _total_block * _raid_chunksize)); - DBUG_PRINT("info", - ("_total_block: %d this_block: %d _remaining_bytes:%d", - _total_block, _this_block, _remaining_bytes)); - DBUG_VOID_RETURN; - } -}; - -#endif /* __cplusplus */ -#endif /* USE_RAID */ |