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/* - mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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* Copyright (C) 2008 MySQL
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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; either version 2 of the License, or
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* (at your option) any later version.
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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/* Copyright (C) 2000-2003 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 <sys/asynch.h> /* Used by record-cache */
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typedef struct my_aio_result {
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#define my_errno (errno)
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#include <mysys/my_pthread.h>
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#include <my_pthread.h>
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#include <mystrings/m_ctype.h> /* for CHARSET_INFO */
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#include <m_ctype.h> /* for CHARSET_INFO */
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#include <stdarg.h>
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#include <mysys/typelib.h>
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#include <mysys/aio_result.h>
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#include <mysys/my_alloc.h>
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#define MY_INIT(name); { my_progname= name; my_init(); }
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typedef struct st_dynamic_array
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unsigned char *buffer;
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uint32_t elements,max_element;
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uint32_t alloc_increment;
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uint32_t size_of_element;
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uint elements,max_element;
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uint alloc_increment;
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uint size_of_element;
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typedef struct st_my_tmpdir
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DYNAMIC_ARRAY full_list;
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pthread_mutex_t mutex;
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typedef struct st_dynamic_string
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size_t length,max_length,alloc_increment;
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typedef int (*IO_CACHE_CALLBACK)(struct st_io_cache*);
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typedef struct st_io_cache_share
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pthread_mutex_t mutex; /* To sync on reads into buffer. */
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pthread_cond_t cond; /* To wait for signals. */
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pthread_cond_t cond_writer; /* For a synchronized writer. */
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/* Offset in file corresponding to the first byte of buffer. */
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my_off_t pos_in_file;
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/* If a synchronized write cache is the source of the data. */
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struct st_io_cache *source_cache;
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uchar *buffer; /* The read buffer. */
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uchar *read_end; /* Behind last valid byte of buffer. */
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int running_threads; /* threads not in lock. */
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int total_threads; /* threads sharing the cache. */
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int error; /* Last error. */
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#ifdef NOT_YET_IMPLEMENTED
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/* whether the structure should be free'd */
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typedef struct st_io_cache /* Used when cacheing files */
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/* Offset in file corresponding to the first byte of uchar* buffer. */
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my_off_t pos_in_file;
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The offset of end of file for READ_CACHE and WRITE_CACHE.
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For SEQ_READ_APPEND it the maximum of the actual end of file and
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the position represented by read_end.
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my_off_t end_of_file;
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/* Points to current read position in the buffer */
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/* the non-inclusive boundary in the buffer for the currently valid read */
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uchar *buffer; /* The read buffer */
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/* Used in ASYNC_IO */
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/* Only used in WRITE caches and in SEQ_READ_APPEND to buffer writes */
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Only used in SEQ_READ_APPEND, and points to the current read position
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in the write buffer. Note that reads in SEQ_READ_APPEND caches can
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happen from both read buffer (uchar* buffer) and write buffer
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(uchar* write_buffer).
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uchar *append_read_pos;
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/* Points to current write position in the write buffer */
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/* The non-inclusive boundary of the valid write area */
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Current_pos and current_end are convenience variables used by
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my_b_tell() and other routines that need to know the current offset
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current_pos points to &write_pos, and current_end to &write_end in a
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WRITE_CACHE, and &read_pos and &read_end respectively otherwise
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uchar **current_pos, **current_end;
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The lock is for append buffer used in SEQ_READ_APPEND cache
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need mutex copying from append buffer to read buffer.
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pthread_mutex_t append_buffer_lock;
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The following is used when several threads are reading the
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same file in parallel. They are synchronized on disk
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accesses reading the cached part of the file asynchronously.
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It should be set to NULL to disable the feature. Only
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READ_CACHE mode is supported.
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IO_CACHE_SHARE *share;
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A caller will use my_b_read() macro to read from the cache
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if the data is already in cache, it will be simply copied with
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memcpy() and internal variables will be accordinging updated with
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no functions invoked. However, if the data is not fully in the cache,
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my_b_read() will call read_function to fetch the data. read_function
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must never be invoked directly.
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int (*read_function)(struct st_io_cache *,uchar *,size_t);
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Same idea as in the case of read_function, except my_b_write() needs to
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be replaced with my_b_append() for a SEQ_READ_APPEND cache
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int (*write_function)(struct st_io_cache *,const uchar *,size_t);
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Specifies the type of the cache. Depending on the type of the cache
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certain operations might not be available and yield unpredicatable
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results. Details to be documented later
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enum cache_type type;
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Callbacks when the actual read I/O happens. These were added and
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are currently used for binary logging of LOAD DATA INFILE - when a
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block is read from the file, we create a block create/append event, and
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when IO_CACHE is closed, we create an end event. These functions could,
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of course be used for other things
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IO_CACHE_CALLBACK pre_read;
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IO_CACHE_CALLBACK post_read;
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IO_CACHE_CALLBACK pre_close;
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Counts the number of times, when we were forced to use disk. We use it to
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increase the binlog_cache_disk_use status variable.
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void* arg; /* for use by pre/post_read */
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char *file_name; /* if used with 'open_cached_file' */
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File file; /* file descriptor */
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seek_not_done is set by my_b_seek() to inform the upcoming read/write
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operation that a seek needs to be preformed prior to the actual I/O
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error is 0 if the cache operation was successful, -1 if there was a
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"hard" error, and the actual number of I/O-ed bytes if the read/write was
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int seek_not_done,error;
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/* buffer_length is memory size allocated for buffer or write_buffer */
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size_t buffer_length;
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/* read_length is the same as buffer_length except when we use async io */
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myf myflags; /* Flags used to my_read/my_write */
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alloced_buffer is 1 if the buffer was allocated by init_io_cache() and
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0 if it was supplied by the user.
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Currently READ_NET is the only one that will use a buffer allocated
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As inidicated by ifdef, this is for async I/O, which is not currently
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used (because it's not reliable on all systems)
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my_off_t aio_read_pos;
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my_aio_result aio_result;
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typedef int (*qsort2_cmp)(const void *, const void *, const void *);
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extern int my_delete_with_symlink(const char *name, myf MyFlags);
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extern int my_rename_with_symlink(const char *from,const char *to,myf MyFlags);
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extern int my_symlink(const char *content, const char *linkname, myf MyFlags);
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extern size_t my_read(File Filedes,unsigned char *Buffer,size_t Count,myf MyFlags);
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extern size_t my_read(File Filedes,uchar *Buffer,size_t Count,myf MyFlags);
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extern int my_rename(const char *from,const char *to,myf MyFlags);
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extern my_off_t my_seek(File fd,my_off_t pos,int whence,myf MyFlags);
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extern my_off_t my_tell(File fd,myf MyFlags);
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extern size_t my_write(File Filedes,const unsigned char *Buffer,size_t Count,
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extern size_t my_write(File Filedes,const uchar *Buffer,size_t Count,
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extern size_t my_fwrite(FILE *stream,const unsigned char *Buffer,size_t Count,
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extern size_t my_fread(FILE *stream,uchar *Buffer,size_t Count,myf MyFlags);
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extern size_t my_fwrite(FILE *stream,const uchar *Buffer,size_t Count,
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extern my_off_t my_fseek(FILE *stream,my_off_t pos,int whence,myf MyFlags);
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extern my_off_t my_ftell(FILE *stream,myf MyFlags);
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extern void *_mymalloc(size_t uSize,const char *sFile,
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uint32_t uLine, myf MyFlag);
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uint uLine, myf MyFlag);
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extern void *_myrealloc(void *pPtr,size_t uSize,const char *sFile,
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uint32_t uLine, myf MyFlag);
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extern void * my_multi_malloc (myf MyFlags, ...);
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extern void _myfree(void *pPtr, const char *sFile, uint32_t uLine, myf MyFlag);
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extern int _sanity(const char *sFile, uint32_t uLine);
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uint uLine, myf MyFlag);
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extern void * my_multi_malloc _VARARGS((myf MyFlags, ...));
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extern void _myfree(void *pPtr,const char *sFile,uint uLine, myf MyFlag);
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extern int _sanity(const char *sFile, uint uLine);
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extern void *_my_memdup(const void *from, size_t length,
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const char *sFile, uint32_t uLine,myf MyFlag);
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extern char * _my_strdup(const char *from, const char *sFile, uint32_t uLine,
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const char *sFile, uint uLine,myf MyFlag);
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extern char * _my_strdup(const char *from, const char *sFile, uint uLine,
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extern char *_my_strndup(const char *from, size_t length,
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const char *sFile, uint32_t uLine,
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const char *sFile, uint uLine,
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/* implemented in my_memmem.c */
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extern void *my_memmem(const void *haystack, size_t haystacklen,
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const void *needle, size_t needlelen);
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#define my_access access
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extern int check_if_legal_filename(const char *path);
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extern int check_if_legal_tablename(const char *path);
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#define my_delete_allow_opened(fname,flags) my_delete((fname),(flags))
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#ifndef TERMINATE
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extern void TERMINATE(FILE *file, uint32_t flag);
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extern void TERMINATE(FILE *file, uint flag);
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extern void init_glob_errs(void);
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extern FILE *my_fopen(const char *FileName,int Flags,myf MyFlags);
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extern FILE *my_fdopen(File Filedes,const char *name, int Flags,myf MyFlags);
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extern int my_fclose(FILE *fd,myf MyFlags);
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extern int my_sync(File fd, myf my_flags);
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extern int my_sync_dir(const char *dir_name, myf my_flags);
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extern int my_sync_dir_by_file(const char *file_name, myf my_flags);
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extern void my_error(int nr,myf MyFlags, ...);
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extern void my_printf_error(uint32_t my_err, const char *format,
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__attribute__((format(printf, 2, 4)));
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extern void my_error _VARARGS((int nr,myf MyFlags, ...));
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extern void my_printf_error _VARARGS((uint my_err, const char *format,
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ATTRIBUTE_FORMAT(printf, 2, 4);
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extern int my_error_register(const char **errmsgs, int first, int last);
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extern const char **my_error_unregister(int first, int last);
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extern void my_message(uint32_t my_err, const char *str,myf MyFlags);
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extern void my_message_no_curses(uint32_t my_err, const char *str,myf MyFlags);
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extern void my_message(uint my_err, const char *str,myf MyFlags);
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extern void my_message_no_curses(uint my_err, const char *str,myf MyFlags);
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extern bool my_init(void);
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extern void my_end(int infoflag);
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extern int my_redel(const char *from, const char *to, int MyFlags);
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extern int init_record_cache(RECORD_CACHE *info,size_t cachesize,File file,
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size_t reclength,enum cache_type type,
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bool use_async_io);
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extern int read_cache_record(RECORD_CACHE *info,unsigned char *to);
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extern int read_cache_record(RECORD_CACHE *info,uchar *to);
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extern int end_record_cache(RECORD_CACHE *info);
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extern int write_cache_record(RECORD_CACHE *info,my_off_t filepos,
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const unsigned char *record,size_t length);
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const uchar *record,size_t length);
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extern int flush_write_cache(RECORD_CACHE *info);
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extern RETSIGTYPE sigtstp_handler(int signal_number);
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extern long my_clock(void);
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extern sig_handler sigtstp_handler(int signal_number);
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extern void handle_recived_signals(void);
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extern RETSIGTYPE my_set_alarm_variable(int signo);
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extern void my_string_ptr_sort(unsigned char *base,uint32_t items,size_t size);
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extern void radixsort_for_str_ptr(unsigned char* base[], uint32_t number_of_elements,
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size_t size_of_element,unsigned char *buffer[]);
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extern RETQSORTTYPE my_qsort(void *base_ptr, size_t total_elems, size_t size,
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extern RETQSORTTYPE my_qsort2(void *base_ptr, size_t total_elems, size_t size,
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qsort2_cmp cmp, void *cmp_argument);
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extern sig_handler my_set_alarm_variable(int signo);
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extern void my_string_ptr_sort(uchar *base,uint items,size_t size);
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extern void radixsort_for_str_ptr(uchar* base[], uint number_of_elements,
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size_t size_of_element,uchar *buffer[]);
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extern qsort_t my_qsort(void *base_ptr, size_t total_elems, size_t size,
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extern qsort_t my_qsort2(void *base_ptr, size_t total_elems, size_t size,
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qsort2_cmp cmp, void *cmp_argument);
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extern qsort2_cmp get_ptr_compare(size_t);
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void my_store_ptr(unsigned char *buff, size_t pack_length, my_off_t pos);
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my_off_t my_get_ptr(unsigned char *ptr, size_t pack_length);
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void my_store_ptr(uchar *buff, size_t pack_length, my_off_t pos);
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my_off_t my_get_ptr(uchar *ptr, size_t pack_length);
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extern int init_io_cache(IO_CACHE *info,File file,size_t cachesize,
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enum cache_type type,my_off_t seek_offset,
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bool use_async_io, myf cache_myflags);
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extern bool reinit_io_cache(IO_CACHE *info,enum cache_type type,
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my_off_t seek_offset,bool use_async_io,
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extern void setup_io_cache(IO_CACHE* info);
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extern int _my_b_read(IO_CACHE *info,uchar *Buffer,size_t Count);
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extern int _my_b_read_r(IO_CACHE *info,uchar *Buffer,size_t Count);
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extern void init_io_cache_share(IO_CACHE *read_cache, IO_CACHE_SHARE *cshare,
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IO_CACHE *write_cache, uint num_threads);
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extern void remove_io_thread(IO_CACHE *info);
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extern int _my_b_seq_read(IO_CACHE *info,uchar *Buffer,size_t Count);
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extern int _my_b_net_read(IO_CACHE *info,uchar *Buffer,size_t Count);
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extern int _my_b_get(IO_CACHE *info);
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extern int _my_b_async_read(IO_CACHE *info,uchar *Buffer,size_t Count);
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extern int _my_b_write(IO_CACHE *info,const uchar *Buffer,size_t Count);
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extern int my_b_append(IO_CACHE *info,const uchar *Buffer,size_t Count);
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extern int my_b_safe_write(IO_CACHE *info,const uchar *Buffer,size_t Count);
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extern int my_block_write(IO_CACHE *info, const uchar *Buffer,
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size_t Count, my_off_t pos);
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extern int my_b_flush_io_cache(IO_CACHE *info, int need_append_buffer_lock);
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#define flush_io_cache(info) my_b_flush_io_cache((info),1)
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extern int end_io_cache(IO_CACHE *info);
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extern size_t my_b_fill(IO_CACHE *info);
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extern void my_b_seek(IO_CACHE *info,my_off_t pos);
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extern size_t my_b_gets(IO_CACHE *info, char *to, size_t max_length);
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extern my_off_t my_b_filelength(IO_CACHE *info);
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extern size_t my_b_printf(IO_CACHE *info, const char* fmt, ...);
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extern size_t my_b_vprintf(IO_CACHE *info, const char* fmt, va_list ap);
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extern bool open_cached_file(IO_CACHE *cache,const char *dir,
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const char *prefix, size_t cache_size,
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extern bool real_open_cached_file(IO_CACHE *cache);
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extern void close_cached_file(IO_CACHE *cache);
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File create_temp_file(char *to, const char *dir, const char *pfx,
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int mode, myf MyFlags);
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#define my_init_dynamic_array(A,B,C,D) init_dynamic_array2(A,B,NULL,C,D CALLER_INFO)
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#define my_init_dynamic_array_ci(A,B,C,D) init_dynamic_array2(A,B,NULL,C,D ORIG_CALLER_INFO)
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#define my_init_dynamic_array2(A,B,C,D,E) init_dynamic_array2(A,B,C,D,E CALLER_INFO)
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#define my_init_dynamic_array2_ci(A,B,C,D,E) init_dynamic_array2(A,B,C,D,E ORIG_CALLER_INFO)
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extern bool init_dynamic_array2(DYNAMIC_ARRAY *array,uint32_t element_size,
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void *init_buffer, uint32_t init_alloc,
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uint32_t alloc_increment
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extern bool init_dynamic_array2(DYNAMIC_ARRAY *array,uint element_size,
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void *init_buffer, uint init_alloc,
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CALLER_INFO_PROTO);
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/* init_dynamic_array() function is deprecated */
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extern bool init_dynamic_array(DYNAMIC_ARRAY *array,uint32_t element_size,
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uint32_t init_alloc,uint32_t alloc_increment
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extern bool init_dynamic_array(DYNAMIC_ARRAY *array,uint element_size,
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uint init_alloc,uint alloc_increment
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CALLER_INFO_PROTO);
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extern bool insert_dynamic(DYNAMIC_ARRAY *array,unsigned char * element);
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extern unsigned char *alloc_dynamic(DYNAMIC_ARRAY *array);
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extern unsigned char *pop_dynamic(DYNAMIC_ARRAY*);
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extern bool set_dynamic(DYNAMIC_ARRAY *array,unsigned char * element,uint32_t array_index);
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extern bool allocate_dynamic(DYNAMIC_ARRAY *array, uint32_t max_elements);
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extern void get_dynamic(DYNAMIC_ARRAY *array,unsigned char * element,uint32_t array_index);
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extern bool insert_dynamic(DYNAMIC_ARRAY *array,uchar * element);
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extern uchar *alloc_dynamic(DYNAMIC_ARRAY *array);
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extern uchar *pop_dynamic(DYNAMIC_ARRAY*);
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extern bool set_dynamic(DYNAMIC_ARRAY *array,uchar * element,uint array_index);
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extern bool allocate_dynamic(DYNAMIC_ARRAY *array, uint max_elements);
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extern void get_dynamic(DYNAMIC_ARRAY *array,uchar * element,uint array_index);
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extern void delete_dynamic(DYNAMIC_ARRAY *array);
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extern void delete_dynamic_element(DYNAMIC_ARRAY *array, uint32_t array_index);
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extern void delete_dynamic_element(DYNAMIC_ARRAY *array, uint array_index);
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extern void freeze_size(DYNAMIC_ARRAY *array);
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extern int get_index_dynamic(DYNAMIC_ARRAY *array, unsigned char * element);
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extern int get_index_dynamic(DYNAMIC_ARRAY *array, uchar * element);
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#define dynamic_array_ptr(array,array_index) ((array)->buffer+(array_index)*(array)->size_of_element)
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#define dynamic_element(array,array_index,type) ((type)((array)->buffer) +(array_index))
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#define push_dynamic(A,B) insert_dynamic((A),(B))
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#define reset_dynamic(array) ((array)->elements= 0)
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#define sort_dynamic(A,cmp) my_qsort((A)->buffer, (A)->elements, (A)->size_of_element, (cmp))
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extern bool init_dynamic_string(DYNAMIC_STRING *str, const char *init_str,
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size_t init_alloc,size_t alloc_increment);
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extern bool dynstr_append(DYNAMIC_STRING *str, const char *append);
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bool dynstr_append_mem(DYNAMIC_STRING *str, const char *append,
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extern bool dynstr_append_os_quoted(DYNAMIC_STRING *str, const char *append,
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extern bool dynstr_set(DYNAMIC_STRING *str, const char *init_str);
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extern bool dynstr_realloc(DYNAMIC_STRING *str, size_t additional_size);
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extern bool dynstr_trunc(DYNAMIC_STRING *str, size_t n);
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extern void dynstr_free(DYNAMIC_STRING *str);
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extern void *my_malloc_lock(size_t length,myf flags);
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extern void my_free_lock(void *ptr,myf flags);
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#define my_malloc_lock(A,B) my_malloc((A),(B))
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#define my_free_lock(A,B) my_free((A),(B))
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#define alloc_root_inited(A) ((A)->min_malloc != 0)
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#define ALLOC_ROOT_MIN_BLOCK_SIZE (MALLOC_OVERHEAD + sizeof(USED_MEM) + 8)
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#define clear_alloc_root(A) do { (A)->free= (A)->used= (A)->pre_alloc= 0; (A)->min_malloc=0;} while(0)
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extern void init_alloc_root(MEM_ROOT *mem_root, size_t block_size,
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size_t pre_alloc_size);
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extern void *alloc_root(MEM_ROOT *mem_root, size_t Size);
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extern void *multi_alloc_root(MEM_ROOT *mem_root, ...);
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extern void free_root(MEM_ROOT *root, myf MyFLAGS);
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extern void set_prealloc_root(MEM_ROOT *root, char *ptr);
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extern void reset_root_defaults(MEM_ROOT *mem_root, size_t block_size,
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size_t prealloc_size);
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extern char *strdup_root(MEM_ROOT *root,const char *str);
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extern char *strmake_root(MEM_ROOT *root,const char *str,size_t len);
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extern void *memdup_root(MEM_ROOT *root,const void *str, size_t len);
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extern int get_defaults_options(int argc, char **argv,
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char **defaults, char **extra_defaults,
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754
char **group_suffix);
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808
#define MAP_NOSYNC 0x0800
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809
#define MAP_FAILED ((void *)-1)
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810
#define MS_SYNC 0x0000
573
813
#define HAVE_MMAP
575
816
void *my_mmap(void *, size_t, int, int, int, my_off_t);
576
817
int my_munmap(void *, size_t);
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#ifdef HAVE_GETPAGESIZE
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#define my_getpagesize() getpagesize()
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int my_getpagesize(void);
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827
/* character sets */
580
extern uint32_t get_charset_number(const char *cs_name, uint32_t cs_flags);
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extern uint32_t get_collation_number(const char *name);
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extern const char *get_charset_name(uint32_t cs_number);
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extern uint get_charset_number(const char *cs_name, uint cs_flags);
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extern uint get_collation_number(const char *name);
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extern const char *get_charset_name(uint cs_number);
584
extern const CHARSET_INFO *get_charset(uint32_t cs_number, myf flags);
585
extern const CHARSET_INFO *get_charset_by_name(const char *cs_name, myf flags);
586
extern const CHARSET_INFO *get_charset_by_csname(const char *cs_name, uint32_t cs_flags, myf my_flags);
832
extern CHARSET_INFO *get_charset(uint cs_number, myf flags);
833
extern CHARSET_INFO *get_charset_by_name(const char *cs_name, myf flags);
834
extern CHARSET_INFO *get_charset_by_csname(const char *cs_name,
835
uint cs_flags, myf my_flags);
588
837
extern bool resolve_charset(const char *cs_name,
589
const CHARSET_INFO *default_cs,
590
const CHARSET_INFO **cs);
838
CHARSET_INFO *default_cs,
591
840
extern bool resolve_collation(const char *cl_name,
592
const CHARSET_INFO *default_cl,
593
const CHARSET_INFO **cl);
841
CHARSET_INFO *default_cl,
595
844
extern void free_charsets(void);
596
845
extern char *get_charsets_dir(char *buf);
597
extern bool my_charset_same(const CHARSET_INFO *cs1, const CHARSET_INFO *cs2);
846
extern bool my_charset_same(CHARSET_INFO *cs1, CHARSET_INFO *cs2);
598
847
extern bool init_compiled_charsets(myf flags);
599
848
extern void add_compiled_collation(CHARSET_INFO *cs);
600
extern size_t escape_string_for_drizzle(const CHARSET_INFO *charset_info,
601
char *to, size_t to_length,
602
const char *from, size_t length);
603
extern size_t escape_quotes_for_drizzle(const CHARSET_INFO *charset_info,
604
char *to, size_t to_length,
605
const char *from, size_t length);
607
extern void thd_increment_bytes_sent(uint32_t length);
608
extern void thd_increment_bytes_received(uint32_t length);
609
extern void thd_increment_net_big_packet_count(uint32_t length);
849
extern size_t escape_string_for_mysql(CHARSET_INFO *charset_info,
850
char *to, size_t to_length,
851
const char *from, size_t length);
852
extern size_t escape_quotes_for_mysql(CHARSET_INFO *charset_info,
853
char *to, size_t to_length,
854
const char *from, size_t length);
856
extern void thd_increment_bytes_sent(ulong length);
857
extern void thd_increment_bytes_received(ulong length);
858
extern void thd_increment_net_big_packet_count(ulong length);
615
861
#endif /* _my_sys_h */