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https://github.com/MariaDB/server.git
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4171483b53
The patch replaces the use of the POSIX I/O interfaces in mysys on Windows with the Win32 API calls (CreateFile, WriteFile, etc). The Windows HANDLE for the open file is stored in the my_file_info struct, along with a flag for append mode (because the Windows API does not support opening files in append mode in all cases) The default max open files has been increased to 16384 and can be increased further by setting --max-open-files=<value> during the server start. Noteworthy benefit of this patch is that it removes limits from the table_cache size - allowing for more simultaneus users
109 lines
3.5 KiB
C
109 lines
3.5 KiB
C
/* Copyright (C) 2000 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#ifndef _my_dir_h
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#define _my_dir_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef MY_DIR_H
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#define MY_DIR_H
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#include <sys/stat.h>
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/* Defines for my_dir and my_stat */
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#define MY_S_IFMT S_IFMT /* type of file */
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#define MY_S_IFDIR S_IFDIR /* directory */
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#define MY_S_IFCHR S_IFCHR /* character special */
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#define MY_S_IFBLK S_IFBLK /* block special */
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#define MY_S_IFREG S_IFREG /* regular */
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#define MY_S_IFIFO S_IFIFO /* fifo */
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#define MY_S_ISUID S_ISUID /* set user id on execution */
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#define MY_S_ISGID S_ISGID /* set group id on execution */
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#define MY_S_ISVTX S_ISVTX /* save swapped text even after use */
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#define MY_S_IREAD S_IREAD /* read permission, owner */
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#define MY_S_IWRITE S_IWRITE /* write permission, owner */
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#define MY_S_IEXEC S_IEXEC /* execute/search permission, owner */
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#define MY_S_ISDIR(m) (((m) & MY_S_IFMT) == MY_S_IFDIR)
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#define MY_S_ISCHR(m) (((m) & MY_S_IFMT) == MY_S_IFCHR)
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#define MY_S_ISBLK(m) (((m) & MY_S_IFMT) == MY_S_IFBLK)
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#define MY_S_ISREG(m) (((m) & MY_S_IFMT) == MY_S_IFREG)
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#define MY_S_ISFIFO(m) (((m) & MY_S_IFMT) == MY_S_IFIFO)
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#define MY_DONT_SORT 512 /* my_lib; Don't sort files */
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#define MY_WANT_STAT 1024 /* my_lib; stat files */
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/* typedefs for my_dir & my_stat */
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#ifdef USE_MY_STAT_STRUCT
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typedef struct my_stat
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{
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dev_t st_dev; /* major & minor device numbers */
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ino_t st_ino; /* inode number */
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ushort st_mode; /* file permissons (& suid sgid .. bits) */
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short st_nlink; /* number of links to file */
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ushort st_uid; /* user id */
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ushort st_gid; /* group id */
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dev_t st_rdev; /* more major & minor device numbers (???) */
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off_t st_size; /* size of file */
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time_t st_atime; /* time for last read */
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time_t st_mtime; /* time for last contens modify */
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time_t st_ctime; /* time for last inode or contents modify */
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} MY_STAT;
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#else
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#if(_MSC_VER)
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#define MY_STAT struct _stati64 /* 64 bit file size */
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#else
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#define MY_STAT struct stat /* Orginal struct have what we need */
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#endif
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#endif /* USE_MY_STAT_STRUCT */
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/* Struct describing one file returned from my_dir */
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typedef struct fileinfo
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{
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char *name;
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MY_STAT *mystat;
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} FILEINFO;
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typedef struct st_my_dir /* Struct returned from my_dir */
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{
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/*
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These members are just copies of parts of DYNAMIC_ARRAY structure,
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which is allocated right after the end of MY_DIR structure (MEM_ROOT
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for storing names is also resides there). We've left them here because
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we don't want to change code that uses my_dir.
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*/
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struct fileinfo *dir_entry;
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uint number_off_files;
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} MY_DIR;
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extern MY_DIR *my_dir(const char *path,myf MyFlags);
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extern void my_dirend(MY_DIR *buffer);
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extern MY_STAT *my_stat(const char *path, MY_STAT *stat_area, myf my_flags);
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extern int my_fstat(int filenr, MY_STAT *stat_area, myf MyFlags);
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#endif /* MY_DIR_H */
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#ifdef __cplusplus
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}
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#endif
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#endif
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