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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
71 lines
2.7 KiB
C
71 lines
2.7 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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#include <my_global.h>
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#include <my_sys.h>
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#ifdef USE_SYSTEM_WRAPPERS
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#include "system_wrappers.h"
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#endif
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#ifdef HAVE_GETRUSAGE
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#include <sys/resource.h>
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#endif
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#ifdef THREAD
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#include <my_pthread.h>
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extern pthread_mutex_t THR_LOCK_malloc, THR_LOCK_open, THR_LOCK_keycache;
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extern pthread_mutex_t THR_LOCK_lock, THR_LOCK_isam, THR_LOCK_net;
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extern pthread_mutex_t THR_LOCK_charset, THR_LOCK_time;
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#else
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#include <my_no_pthread.h>
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#endif
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/*
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EDQUOT is used only in 3 C files only in mysys/. If it does not exist on
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system, we set it to some value which can never happen.
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*/
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#ifndef EDQUOT
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#define EDQUOT (-1)
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#endif
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void my_error_unregister_all(void);
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void my_thread_destroy_mutex(void);
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my_bool my_wait_for_other_threads_to_die(uint number_of_threads);
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#ifdef _WIN32
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/* my_winfile.c exports, should not be used outside mysys */
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extern File my_win_open(const char *path, int oflag);
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extern int my_win_close(File fd);
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extern size_t my_win_read(File fd, uchar *buffer, size_t count);
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extern size_t my_win_write(File fd, const uchar *buffer, size_t count);
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extern size_t my_win_pread(File fd, uchar *buffer, size_t count,
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my_off_t offset);
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extern size_t my_win_pwrite(File fd, const uchar *buffer, size_t count,
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my_off_t offset);
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extern my_off_t my_win_lseek(File fd, my_off_t pos, int whence);
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extern int my_win_chsize(File fd, my_off_t newlength);
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extern FILE* my_win_fopen(const char *filename, const char *type);
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extern File my_win_fclose(FILE *file);
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extern File my_win_fileno(FILE *file);
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extern FILE* my_win_fdopen(File Filedes, const char *type);
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extern int my_win_stat(const char *path, struct _stat64 *buf);
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extern int my_win_fstat(File fd, struct _stat64 *buf);
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extern int my_win_fsync(File fd);
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extern File my_win_dup(File fd);
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extern File my_win_sopen(const char *path, int oflag, int shflag, int perm);
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extern File my_open_osfhandle(HANDLE handle, int oflag);
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#endif
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