From 354bb40e75d94466e91fe6960523612c9d17ccfb Mon Sep 17 00:00:00 2001 From: Karen Arutyunov Date: Thu, 2 Nov 2017 23:11:29 +0300 Subject: Add implementation --- mysql/my_sys.h | 982 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 982 insertions(+) create mode 100644 mysql/my_sys.h (limited to 'mysql/my_sys.h') diff --git a/mysql/my_sys.h b/mysql/my_sys.h new file mode 100644 index 0000000..21bdc5f --- /dev/null +++ b/mysql/my_sys.h @@ -0,0 +1,982 @@ +/* Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved. + + 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; version 2 of the License. + + 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ + +#ifndef _my_sys_h +#define _my_sys_h + +#include "my_global.h" /* C_MODE_START, C_MODE_END */ +#include "m_ctype.h" /* for CHARSET_INFO */ + +#include "my_thread.h" /* Needed for psi.h */ +#include "mysql/psi/psi.h" +#include "mysql/service_mysql_alloc.h" +#include "mysql/psi/mysql_memory.h" +#include "mysql/psi/mysql_thread.h" + +#ifdef HAVE_ALLOCA_H +#include +#endif +#ifdef _WIN32 +#include +#endif +#ifdef HAVE_UNISTD_H +#include +#endif +#include + +C_MODE_START + +#ifdef HAVE_VALGRIND +# include +# define MEM_MALLOCLIKE_BLOCK(p1, p2, p3, p4) VALGRIND_MALLOCLIKE_BLOCK(p1, p2, p3, p4) +# define MEM_FREELIKE_BLOCK(p1, p2) VALGRIND_FREELIKE_BLOCK(p1, p2) +# include +# define MEM_UNDEFINED(a,len) VALGRIND_MAKE_MEM_UNDEFINED(a,len) +# define MEM_NOACCESS(a,len) VALGRIND_MAKE_MEM_NOACCESS(a,len) +# define MEM_CHECK_ADDRESSABLE(a,len) VALGRIND_CHECK_MEM_IS_ADDRESSABLE(a,len) +#else /* HAVE_VALGRIND */ +# define MEM_MALLOCLIKE_BLOCK(p1, p2, p3, p4) do {} while (0) +# define MEM_FREELIKE_BLOCK(p1, p2) do {} while (0) +# define MEM_UNDEFINED(a,len) ((void) 0) +# define MEM_NOACCESS(a,len) ((void) 0) +# define MEM_CHECK_ADDRESSABLE(a,len) ((void) 0) +#endif /* HAVE_VALGRIND */ + +#include + +#define MY_INIT(name) { my_progname= name; my_init(); } + +/** + Max length of an error message generated by mysys utilities. + Some mysys functions produce error messages. These mostly go + to stderr. + This constant defines the size of the buffer used to format + the message. It should be kept in sync with MYSQL_ERRMSG_SIZE, + since sometimes mysys errors are stored in the server diagnostics + area, and we would like to avoid unexpected truncation. +*/ +#define MYSYS_ERRMSG_SIZE (512) +#define MYSYS_STRERROR_SIZE (128) + +#define MY_FILE_ERROR ((size_t) -1) + + /* General bitmaps for my_func's */ +#define MY_FFNF 1 /* Fatal if file not found */ +#define MY_FNABP 2 /* Fatal if not all bytes read/writen */ +#define MY_NABP 4 /* Error if not all bytes read/writen */ +#define MY_FAE 8 /* Fatal if any error */ +#define MY_WME 16 /* Write message on error */ +#define MY_WAIT_IF_FULL 32 /* Wait and try again if disk full error */ +#define MY_IGNORE_BADFD 32 /* my_sync: ignore 'bad descriptor' errors */ +#define MY_SYNC_DIR 8192 /* my_create/delete/rename: sync directory */ +#define MY_UNUSED 64 /* Unused (was support for RAID) */ +#define MY_FULL_IO 512 /* For my_read - loop intil I/O is complete */ +#define MY_DONT_CHECK_FILESIZE 128 /* Option to init_io_cache() */ +#define MY_LINK_WARNING 32 /* my_redel() gives warning if links */ +#define MY_COPYTIME 64 /* my_redel() copys time */ +#define MY_DELETE_OLD 256 /* my_create_with_symlink() */ +#define MY_RESOLVE_LINK 128 /* my_realpath(); Only resolve links */ +#define MY_HOLD_ORIGINAL_MODES 128 /* my_copy() holds to file modes */ +#define MY_REDEL_MAKE_BACKUP 256 +#define MY_REDEL_NO_COPY_STAT 512 /* my_redel() doesn't call my_copystat() */ +#define MY_SEEK_NOT_DONE 32 /* my_lock may have to do a seek */ +#define MY_DONT_WAIT 64 /* my_lock() don't wait if can't lock */ +#define MY_ZEROFILL 32 /* my_malloc(), fill array with zero */ +#define MY_ALLOW_ZERO_PTR 64 /* my_realloc() ; zero ptr -> malloc */ +#define MY_FREE_ON_ERROR 128 /* my_realloc() ; Free old ptr on error */ +#define MY_HOLD_ON_ERROR 256 /* my_realloc() ; Return old ptr on error */ +#define MY_DONT_OVERWRITE_FILE 1024 /* my_copy: Don't overwrite file */ +#define MY_THREADSAFE 2048 /* my_seek(): lock fd mutex */ +#define MY_SYNC 4096 /* my_copy(): sync dst file */ + +#define MYF_RW MYF(MY_WME+MY_NABP) /* For my_read & my_write */ + +#define MY_CHECK_ERROR 1 /* Params to my_end; Check open-close */ +#define MY_GIVE_INFO 2 /* Give time info about process*/ +#define MY_DONT_FREE_DBUG 4 /* Do not call DBUG_END() in my_end() */ + +/* Flags for my_error() */ +#define ME_BELL 4 /* DEPRECATED: Ring bell then printing message */ +#define ME_ERRORLOG 64 /* Write the error message to error log */ +#define ME_FATALERROR 1024 /* Fatal statement error */ + + /* Bits in last argument to fn_format */ +#define MY_REPLACE_DIR 1 /* replace dir in name with 'dir' */ +#define MY_REPLACE_EXT 2 /* replace extension with 'ext' */ +#define MY_UNPACK_FILENAME 4 /* Unpack name (~ -> home) */ +#define MY_PACK_FILENAME 8 /* Pack name (home -> ~) */ +#define MY_RESOLVE_SYMLINKS 16 /* Resolve all symbolic links */ +#define MY_RETURN_REAL_PATH 32 /* return full path for file */ +#define MY_SAFE_PATH 64 /* Return NULL if too long path */ +#define MY_RELATIVE_PATH 128 /* name is relative to 'dir' */ +#define MY_APPEND_EXT 256 /* add 'ext' as additional extension*/ + + + /* My seek flags */ +#define MY_SEEK_SET 0 +#define MY_SEEK_CUR 1 +#define MY_SEEK_END 2 + + /* Some constants */ +#define MY_WAIT_FOR_USER_TO_FIX_PANIC 60 /* in seconds */ +#define MY_WAIT_GIVE_USER_A_MESSAGE 10 /* Every 10 times of prev */ +#define MIN_COMPRESS_LENGTH 50 /* Don't compress small bl. */ +#define DFLT_INIT_HITS 3 + + /* root_alloc flags */ +#define MY_KEEP_PREALLOC 1 +#define MY_MARK_BLOCKS_FREE 2 /* move used to free list and reuse them */ + + /* Internal error numbers (for assembler functions) */ +#define MY_ERRNO_EDOM 33 +#define MY_ERRNO_ERANGE 34 + + /* Bits for get_date timeflag */ +#define GETDATE_DATE_TIME 1 +#define GETDATE_SHORT_DATE 2 +#define GETDATE_HHMMSSTIME 4 +#define GETDATE_GMT 8 +#define GETDATE_FIXEDLENGTH 16 + + /* defines when allocating data */ +extern void *my_multi_malloc(PSI_memory_key key, myf flags, ...); + +/* + Switch to my_malloc() if the memory block to be allocated is bigger than + max_alloca_sz. +*/ +extern PSI_memory_key key_memory_max_alloca; +#define my_safe_alloca(size, max_alloca_sz) ((size <= max_alloca_sz) ? \ + my_alloca(size) : \ + my_malloc(key_memory_max_alloca, size, MYF(0))) +#define my_safe_afree(ptr, size, max_alloca_sz) if (size > max_alloca_sz) \ + my_free(ptr) + +#if !defined(DBUG_OFF) || defined(HAVE_VALGRIND) +/** + Put bad content in memory to be sure it will segfault if dereferenced. + With Valgrind, verify that memory is addressable, and mark it undefined. + We cache value of B because if B is expression which depends on A, memset() + trashes value of B. +*/ +#define TRASH(A,B) do { \ + const size_t l= (B); \ + MEM_CHECK_ADDRESSABLE(A, l); \ + memset(A, 0x8F, l); \ + MEM_UNDEFINED(A, l); \ + } while (0) +#else +#define TRASH(A,B) do {} while(0) +#endif +#if defined(ENABLED_DEBUG_SYNC) +extern void (*debug_sync_C_callback_ptr)(const char *, size_t); +#define DEBUG_SYNC_C(_sync_point_name_) do { \ + if (debug_sync_C_callback_ptr != NULL) \ + (*debug_sync_C_callback_ptr)(STRING_WITH_LEN(_sync_point_name_)); } \ + while(0) +#define DEBUG_SYNC_C_IF_THD(thd, _sync_point_name_) do { \ + if (debug_sync_C_callback_ptr != NULL && thd) \ + (*debug_sync_C_callback_ptr)(STRING_WITH_LEN(_sync_point_name_)); } \ + while(0) +#else +#define DEBUG_SYNC_C(_sync_point_name_) +#define DEBUG_SYNC_C_IF_THD(thd, _sync_point_name_) +#endif /* defined(ENABLED_DEBUG_SYNC) */ + +#ifdef HAVE_LINUX_LARGE_PAGES +extern uint my_get_large_page_size(void); +extern uchar * my_large_malloc(PSI_memory_key key, size_t size, myf my_flags); +extern void my_large_free(uchar *ptr); +extern my_bool my_use_large_pages; +extern uint my_large_page_size; +#else +#define my_get_large_page_size() (0) +#define my_large_malloc(A,B,C) my_malloc((A),(B),(C)) +#define my_large_free(A) my_free((A)) +#endif /* HAVE_LINUX_LARGE_PAGES */ + +#define my_alloca(SZ) alloca((size_t) (SZ)) + +#include /* errno is a define */ + +extern char *home_dir; /* Home directory for user */ +extern const char *my_progname; /* program-name (printed in errors) */ +extern char curr_dir[]; /* Current directory for user */ +extern void (*error_handler_hook)(uint my_err, const char *str,myf MyFlags); +extern void (*fatal_error_handler_hook)(uint my_err, const char *str, + myf MyFlags); +extern void (*local_message_hook)(enum loglevel ll, + const char *format, va_list args); +extern uint my_file_limit; +extern MYSQL_PLUGIN_IMPORT ulong my_thread_stack_size; + +/* + Hooks for reporting execution stage information. The server implementation + of these will also set THD::current_cond/current_mutex. + By having hooks, we avoid direct dependencies on server code. +*/ +extern void (*enter_cond_hook)(void *opaque_thd, + mysql_cond_t *cond, + mysql_mutex_t *mutex, + const PSI_stage_info *stage, + PSI_stage_info *old_stage, + const char *src_function, + const char *src_file, + int src_line); + +extern void (*exit_cond_hook)(void *opaque_thd, + const PSI_stage_info *stage, + const char *src_function, + const char *src_file, + int src_line); + +/* + Hook for checking if the thread has been killed. +*/ +extern int (*is_killed_hook)(const void *opaque_thd); + +/* charsets */ +#define MY_ALL_CHARSETS_SIZE 2048 +extern MYSQL_PLUGIN_IMPORT CHARSET_INFO *default_charset_info; +extern MYSQL_PLUGIN_IMPORT CHARSET_INFO *all_charsets[MY_ALL_CHARSETS_SIZE]; +extern CHARSET_INFO compiled_charsets[]; + +/* statistics */ +extern ulong my_file_opened,my_stream_opened, my_tmp_file_created; +extern ulong my_file_total_opened; +extern my_bool my_init_done; + +extern MYSQL_PLUGIN_IMPORT int my_umask; /* Default creation mask */ +extern int my_umask_dir; + +extern ulong my_default_record_cache_size; +extern my_bool my_disable_locking, + my_enable_symlinks; +extern char wild_many,wild_one,wild_prefix; +extern const char *charsets_dir; + +enum cache_type +{ + TYPE_NOT_SET= 0, READ_CACHE, WRITE_CACHE, + SEQ_READ_APPEND /* sequential read or append */, + READ_FIFO, READ_NET,WRITE_NET}; + +enum flush_type +{ + FLUSH_KEEP, /* flush block and keep it in the cache */ + FLUSH_RELEASE, /* flush block and remove it from the cache */ + FLUSH_IGNORE_CHANGED, /* remove block from the cache */ + /* + As my_disable_flush_pagecache_blocks is always 0, the following option + is strictly equivalent to FLUSH_KEEP + */ + FLUSH_FORCE_WRITE +}; + +enum file_type +{ + UNOPEN = 0, FILE_BY_OPEN, FILE_BY_CREATE, STREAM_BY_FOPEN, STREAM_BY_FDOPEN, + FILE_BY_MKSTEMP, FILE_BY_DUP +}; + +struct st_my_file_info +{ + char *name; +#ifdef _WIN32 + HANDLE fhandle; /* win32 file handle */ + int oflag; /* open flags, e.g O_APPEND */ +#endif + enum file_type type; +}; + +extern struct st_my_file_info *my_file_info; + +/* needed for client-only build */ +#ifndef PSI_FILE_KEY_DEFINED +typedef unsigned int PSI_file_key; +#define PSI_FILE_KEY_DEFINED +#endif + +typedef struct st_dynamic_array +{ + uchar *buffer; + uint elements,max_element; + uint alloc_increment; + uint size_of_element; + PSI_memory_key m_psi_key; +} DYNAMIC_ARRAY; + +typedef struct st_my_tmpdir +{ + char **list; + uint cur, max; + mysql_mutex_t mutex; +} MY_TMPDIR; + +typedef struct st_dynamic_string +{ + char *str; + size_t length,max_length,alloc_increment; +} DYNAMIC_STRING; + +struct st_io_cache; +typedef int (*IO_CACHE_CALLBACK)(struct st_io_cache*); + +typedef struct st_io_cache_share +{ + mysql_mutex_t mutex; /* To sync on reads into buffer. */ + mysql_cond_t cond; /* To wait for signals. */ + mysql_cond_t cond_writer; /* For a synchronized writer. */ + /* Offset in file corresponding to the first byte of buffer. */ + my_off_t pos_in_file; + /* If a synchronized write cache is the source of the data. */ + struct st_io_cache *source_cache; + uchar *buffer; /* The read buffer. */ + uchar *read_end; /* Behind last valid byte of buffer. */ + int running_threads; /* threads not in lock. */ + int total_threads; /* threads sharing the cache. */ + int error; /* Last error. */ +} IO_CACHE_SHARE; + +typedef struct st_io_cache /* Used when cacheing files */ +{ + /* Offset in file corresponding to the first byte of uchar* buffer. */ + my_off_t pos_in_file; + /* + The offset of end of file for READ_CACHE and WRITE_CACHE. + For SEQ_READ_APPEND it the maximum of the actual end of file and + the position represented by read_end. + */ + my_off_t end_of_file; + /* Points to current read position in the buffer */ + uchar *read_pos; + /* the non-inclusive boundary in the buffer for the currently valid read */ + uchar *read_end; + uchar *buffer; /* The read buffer */ + /* Used in ASYNC_IO */ + uchar *request_pos; + + /* Only used in WRITE caches and in SEQ_READ_APPEND to buffer writes */ + uchar *write_buffer; + /* + Only used in SEQ_READ_APPEND, and points to the current read position + in the write buffer. Note that reads in SEQ_READ_APPEND caches can + happen from both read buffer (uchar* buffer) and write buffer + (uchar* write_buffer). + */ + uchar *append_read_pos; + /* Points to current write position in the write buffer */ + uchar *write_pos; + /* The non-inclusive boundary of the valid write area */ + uchar *write_end; + + /* + Current_pos and current_end are convenience variables used by + my_b_tell() and other routines that need to know the current offset + current_pos points to &write_pos, and current_end to &write_end in a + WRITE_CACHE, and &read_pos and &read_end respectively otherwise + */ + uchar **current_pos, **current_end; + + /* + The lock is for append buffer used in SEQ_READ_APPEND cache + need mutex copying from append buffer to read buffer. + */ + mysql_mutex_t append_buffer_lock; + /* + The following is used when several threads are reading the + same file in parallel. They are synchronized on disk + accesses reading the cached part of the file asynchronously. + It should be set to NULL to disable the feature. Only + READ_CACHE mode is supported. + */ + IO_CACHE_SHARE *share; + + /* + A caller will use my_b_read() macro to read from the cache + if the data is already in cache, it will be simply copied with + memcpy() and internal variables will be accordinging updated with + no functions invoked. However, if the data is not fully in the cache, + my_b_read() will call read_function to fetch the data. read_function + must never be invoked directly. + */ + int (*read_function)(struct st_io_cache *,uchar *,size_t); + /* + Same idea as in the case of read_function, except my_b_write() needs to + be replaced with my_b_append() for a SEQ_READ_APPEND cache + */ + int (*write_function)(struct st_io_cache *,const uchar *,size_t); + /* + Specifies the type of the cache. Depending on the type of the cache + certain operations might not be available and yield unpredicatable + results. Details to be documented later + */ + enum cache_type type; + /* + Callbacks when the actual read I/O happens. These were added and + are currently used for binary logging of LOAD DATA INFILE - when a + block is read from the file, we create a block create/append event, and + when IO_CACHE is closed, we create an end event. These functions could, + of course be used for other things + */ + IO_CACHE_CALLBACK pre_read; + IO_CACHE_CALLBACK post_read; + IO_CACHE_CALLBACK pre_close; + /* + Counts the number of times, when we were forced to use disk. We use it to + increase the binlog_cache_disk_use and binlog_stmt_cache_disk_use status + variables. + */ + ulong disk_writes; + void* arg; /* for use by pre/post_read */ + char *file_name; /* if used with 'open_cached_file' */ + char *dir,*prefix; + File file; /* file descriptor */ + PSI_file_key file_key; /* instrumented file key */ + + /* + seek_not_done is set by my_b_seek() to inform the upcoming read/write + operation that a seek needs to be preformed prior to the actual I/O + error is 0 if the cache operation was successful, -1 if there was a + "hard" error, and the actual number of I/O-ed bytes if the read/write was + partial. + */ + int seek_not_done,error; + /* buffer_length is memory size allocated for buffer or write_buffer */ + size_t buffer_length; + /* read_length is the same as buffer_length except when we use async io */ + size_t read_length; + myf myflags; /* Flags used to my_read/my_write */ + /* + alloced_buffer is 1 if the buffer was allocated by init_io_cache() and + 0 if it was supplied by the user. + Currently READ_NET is the only one that will use a buffer allocated + somewhere else + */ + my_bool alloced_buffer; +} IO_CACHE; + +typedef int (*qsort2_cmp)(const void *, const void *, const void *); + +/* + Subset of struct stat fields filled by stat/lstat/fstat that uniquely + identify a file +*/ +typedef struct st_file_id +{ + dev_t st_dev; + ino_t st_ino; +} ST_FILE_ID; + +typedef void (*my_error_reporter)(enum loglevel level, const char *format, ...) + MY_ATTRIBUTE((format(printf, 2, 3))); + +extern my_error_reporter my_charset_error_reporter; + +/* defines for mf_iocache */ +extern PSI_file_key key_file_io_cache; + +/* Test if buffer is inited */ +#define my_b_clear(info) (info)->buffer=0 +#define my_b_inited(info) (info)->buffer +#define my_b_EOF INT_MIN + +#define my_b_read(info,Buffer,Count) \ + ((info)->read_pos + (Count) <= (info)->read_end ?\ + (memcpy(Buffer,(info)->read_pos,(size_t) (Count)), \ + ((info)->read_pos+=(Count)),0) :\ + (*(info)->read_function)((info),Buffer,Count)) + +#define my_b_write(info,Buffer,Count) \ + ((info)->write_pos + (Count) <=(info)->write_end ?\ + (memcpy((info)->write_pos, (Buffer), (size_t)(Count)),\ + ((info)->write_pos+=(Count)),0) : \ + (*(info)->write_function)((info),(uchar *)(Buffer),(Count))) + +#define my_b_get(info) \ + ((info)->read_pos != (info)->read_end ?\ + ((info)->read_pos++, (int) (uchar) (info)->read_pos[-1]) :\ + _my_b_get(info)) + +#define my_b_tell(info) ((info)->pos_in_file + \ + (size_t) (*(info)->current_pos - (info)->request_pos)) + +#define my_b_get_buffer_start(info) (info)->request_pos +#define my_b_get_bytes_in_buffer(info) (char*) (info)->read_end - \ + (char*) my_b_get_buffer_start(info) +#define my_b_get_pos_in_file(info) (info)->pos_in_file + +/* tell write offset in the SEQ_APPEND cache */ +int my_b_copy_to_file(IO_CACHE *cache, FILE *file); +my_off_t my_b_append_tell(IO_CACHE* info); +my_off_t my_b_safe_tell(IO_CACHE* info); /* picks the correct tell() */ + +#define my_b_bytes_in_cache(info) (size_t) (*(info)->current_end - \ + *(info)->current_pos) + +typedef uint32 ha_checksum; + +#include + + + /* Prototypes for mysys and my_func functions */ + +extern int my_copy(const char *from,const char *to,myf MyFlags); +extern int my_delete(const char *name,myf MyFlags); +extern int my_getwd(char * buf,size_t size,myf MyFlags); +extern int my_setwd(const char *dir,myf MyFlags); +extern int my_lock(File fd,int op,my_off_t start, my_off_t length,myf MyFlags); +extern void *my_once_alloc(size_t Size,myf MyFlags); +extern void my_once_free(void); +extern char *my_once_strdup(const char *src,myf myflags); +extern void *my_once_memdup(const void *src, size_t len, myf myflags); +extern File my_open(const char *FileName,int Flags,myf MyFlags); +extern File my_register_filename(File fd, const char *FileName, + enum file_type type_of_file, + uint error_message_number, myf MyFlags); +extern File my_create(const char *FileName,int CreateFlags, + int AccessFlags, myf MyFlags); +extern int my_close(File Filedes,myf MyFlags); +extern int my_mkdir(const char *dir, int Flags, myf MyFlags); +extern int my_readlink(char *to, const char *filename, myf MyFlags); +extern int my_is_symlink(const char *filename, ST_FILE_ID *file_id); +extern int my_realpath(char *to, const char *filename, myf MyFlags); +extern int my_is_same_file(File file, const ST_FILE_ID *file_id); +extern File my_create_with_symlink(const char *linkname, const char *filename, + int createflags, int access_flags, + myf MyFlags); +extern int my_delete_with_symlink(const char *name, myf MyFlags); +extern int my_rename_with_symlink(const char *from,const char *to,myf MyFlags); +extern int my_symlink(const char *content, const char *linkname, myf MyFlags); +extern size_t my_read(File Filedes,uchar *Buffer,size_t Count,myf MyFlags); +extern size_t my_pread(File Filedes,uchar *Buffer,size_t Count,my_off_t offset, + myf MyFlags); +extern int my_rename(const char *from,const char *to,myf MyFlags); +extern my_off_t my_seek(File fd,my_off_t pos,int whence,myf MyFlags); +extern my_off_t my_tell(File fd,myf MyFlags); +extern size_t my_write(File Filedes,const uchar *Buffer,size_t Count, + myf MyFlags); +extern size_t my_pwrite(File Filedes,const uchar *Buffer,size_t Count, + my_off_t offset,myf MyFlags); +extern size_t my_fread(FILE *stream,uchar *Buffer,size_t Count,myf MyFlags); +extern size_t my_fwrite(FILE *stream,const uchar *Buffer,size_t Count, + myf MyFlags); +extern my_off_t my_fseek(FILE *stream,my_off_t pos,int whence,myf MyFlags); +extern my_off_t my_ftell(FILE *stream,myf MyFlags); + +/* implemented in my_syslog.c */ + +// Maximum size of message that will be logged. +#define MAX_SYSLOG_MESSAGE_SIZE 1024 + +/* Platform-independent SysLog support */ + +/* facilities on unixoid syslog. harmless on systemd / Win platforms. */ +typedef struct st_syslog_facility { int id; const char *name; } SYSLOG_FACILITY; +extern SYSLOG_FACILITY syslog_facility[]; + +enum my_syslog_options { MY_SYSLOG_PIDS= 1 }; + +int my_openlog(const char *eventSourceName, int option, int facility); +int my_closelog(); +int my_syslog(const CHARSET_INFO *cs, enum loglevel level, const char *msg); + +/* implemented in my_memmem.c */ +extern void *my_memmem(const void *haystack, size_t haystacklen, + const void *needle, size_t needlelen); + + +#ifdef _WIN32 +extern int my_access(const char *path, int amode); +#else +#define my_access access +#endif + +extern int check_if_legal_filename(const char *path); +extern int check_if_legal_tablename(const char *path); + +#ifdef _WIN32 +extern my_bool is_filename_allowed(const char *name, size_t length, + my_bool allow_current_dir); +#else /* _WIN32 */ +# define is_filename_allowed(name, length, allow_cwd) (TRUE) +#endif /* _WIN32 */ + +#ifdef _WIN32 +extern int nt_share_delete(const char *name,myf MyFlags); +#define my_delete_allow_opened(fname,flags) nt_share_delete((fname),(flags)) +#else +#define my_delete_allow_opened(fname,flags) my_delete((fname),(flags)) +#endif + +#ifdef _WIN32 +/* Windows-only functions (CRT equivalents)*/ +extern HANDLE my_get_osfhandle(File fd); +extern void my_osmaperr(unsigned long last_error); +#endif + +extern const char* get_global_errmsg(int nr); +extern void wait_for_free_space(const char *filename, int errors); +extern FILE *my_fopen(const char *FileName,int Flags,myf MyFlags); +extern FILE *my_fdopen(File Filedes,const char *name, int Flags,myf MyFlags); +extern FILE *my_freopen(const char *path, const char *mode, FILE *stream); +extern int my_fclose(FILE *fd,myf MyFlags); +extern File my_fileno(FILE *fd); +extern int my_chsize(File fd,my_off_t newlength, int filler, myf MyFlags); +extern void thr_set_sync_wait_callback(void (*before_sync)(void), + void (*after_sync)(void)); +extern int my_sync(File fd, myf my_flags); +extern int my_sync_dir(const char *dir_name, myf my_flags); +extern int my_sync_dir_by_file(const char *file_name, myf my_flags); +extern char *my_strerror(char *buf, size_t len, int errnum); +extern const char *my_get_err_msg(int nr); +extern void my_error(int nr,myf MyFlags, ...); +extern void my_printf_error(uint my_err, const char *format, + myf MyFlags, ...) + MY_ATTRIBUTE((format(printf, 2, 4))); +extern void my_printv_error(uint error, const char *format, myf MyFlags, + va_list ap); +extern int my_error_register(const char* (*get_errmsg) (int), + int first, int last); +extern my_bool my_error_unregister(int first, int last); +extern void my_message(uint my_err, const char *str,myf MyFlags); +extern void my_message_stderr(uint my_err, const char *str, myf MyFlags); +void my_message_local_stderr(enum loglevel ll, + const char *format, va_list args); +extern void my_message_local(enum loglevel ll, const char *format, ...); +extern my_bool my_init(void); +extern void my_end(int infoflag); +extern int my_redel(const char *from, const char *to, int MyFlags); +extern int my_copystat(const char *from, const char *to, int MyFlags); +extern char * my_filename(File fd); +extern MY_MODE get_file_perm(ulong perm_flags); +extern my_bool my_chmod(const char *filename, ulong perm_flags, myf my_flags); + +#ifdef EXTRA_DEBUG +void my_print_open_files(void); +#else +#define my_print_open_files() +#endif + +extern my_bool init_tmpdir(MY_TMPDIR *tmpdir, const char *pathlist); +extern char *my_tmpdir(MY_TMPDIR *tmpdir); +extern void free_tmpdir(MY_TMPDIR *tmpdir); + +extern size_t dirname_part(char * to,const char *name, size_t *to_res_length); +extern size_t dirname_length(const char *name); +#define base_name(A) (A+dirname_length(A)) +extern int test_if_hard_path(const char *dir_name); +extern my_bool has_path(const char *name); +extern char *convert_dirname(char *to, const char *from, const char *from_end); +extern void to_unix_path(char * name); +extern char * fn_ext(const char *name); +extern char * fn_same(char * toname,const char *name,int flag); +extern char * fn_format(char * to,const char *name,const char *dir, + const char *form, uint flag); +extern size_t strlength(const char *str); +extern void pack_dirname(char * to,const char *from); +extern size_t normalize_dirname(char * to, const char *from); +extern size_t unpack_dirname(char * to,const char *from); +extern size_t cleanup_dirname(char * to,const char *from); +extern size_t system_filename(char * to,const char *from); +extern size_t unpack_filename(char * to,const char *from); +extern char * intern_filename(char * to,const char *from); +extern int pack_filename(char * to, const char *name, size_t max_length); +extern char * my_path(char * to,const char *progname, + const char *own_pathname_part); +extern char * my_load_path(char * to, const char *path, + const char *own_path_prefix); +extern int wild_compare(const char *str,const char *wildstr, + pbool str_is_pattern); +extern my_bool array_append_string_unique(const char *str, + const char **array, size_t size); +extern void get_date(char * to,int timeflag,time_t use_time); +extern void soundex(CHARSET_INFO *, char * out_pntr, char * in_pntr, + pbool remove_garbage); + +extern my_bool radixsort_is_appliccable(uint n_items, size_t size_of_element); +extern void radixsort_for_str_ptr(uchar* base[], uint number_of_elements, + size_t size_of_element,uchar *buffer[]); +extern void my_qsort(void *base_ptr, size_t total_elems, size_t size, + qsort_cmp cmp); +extern void my_qsort2(void *base_ptr, size_t total_elems, size_t size, + qsort2_cmp cmp, const void *cmp_argument); +void my_store_ptr(uchar *buff, size_t pack_length, my_off_t pos); +my_off_t my_get_ptr(uchar *ptr, size_t pack_length); +extern int init_io_cache_ext(IO_CACHE *info,File file,size_t cachesize, + enum cache_type type,my_off_t seek_offset, + pbool use_async_io, myf cache_myflags, + PSI_file_key file_key); +extern int init_io_cache(IO_CACHE *info,File file,size_t cachesize, + enum cache_type type,my_off_t seek_offset, + pbool use_async_io, myf cache_myflags); +extern my_bool reinit_io_cache(IO_CACHE *info,enum cache_type type, + my_off_t seek_offset,pbool use_async_io, + pbool clear_cache); +extern void setup_io_cache(IO_CACHE* info); +extern int _my_b_read(IO_CACHE *info,uchar *Buffer,size_t Count); +extern int _my_b_read_r(IO_CACHE *info,uchar *Buffer,size_t Count); +extern void init_io_cache_share(IO_CACHE *read_cache, IO_CACHE_SHARE *cshare, + IO_CACHE *write_cache, uint num_threads); +extern void remove_io_thread(IO_CACHE *info); +extern int _my_b_seq_read(IO_CACHE *info,uchar *Buffer,size_t Count); +extern int _my_b_net_read(IO_CACHE *info,uchar *Buffer,size_t Count); +extern int _my_b_get(IO_CACHE *info); +extern int _my_b_write(IO_CACHE *info,const uchar *Buffer,size_t Count); +extern int my_b_append(IO_CACHE *info,const uchar *Buffer,size_t Count); +extern int my_b_safe_write(IO_CACHE *info,const uchar *Buffer,size_t Count); + +extern int my_block_write(IO_CACHE *info, const uchar *Buffer, + size_t Count, my_off_t pos); +extern int my_b_flush_io_cache(IO_CACHE *info, int need_append_buffer_lock); + +#define flush_io_cache(info) my_b_flush_io_cache((info),1) + +extern int end_io_cache(IO_CACHE *info); +extern size_t my_b_fill(IO_CACHE *info); +extern void my_b_seek(IO_CACHE *info,my_off_t pos); +extern size_t my_b_gets(IO_CACHE *info, char *to, size_t max_length); +extern my_off_t my_b_filelength(IO_CACHE *info); +extern size_t my_b_printf(IO_CACHE *info, const char* fmt, ...) + MY_ATTRIBUTE((format(printf, 2, 3))); +extern size_t my_b_vprintf(IO_CACHE *info, const char* fmt, va_list ap); +extern my_bool open_cached_file(IO_CACHE *cache,const char *dir, + const char *prefix, size_t cache_size, + myf cache_myflags); +extern my_bool real_open_cached_file(IO_CACHE *cache); +extern void close_cached_file(IO_CACHE *cache); +File create_temp_file(char *to, const char *dir, const char *pfx, + int mode, myf MyFlags); + +// Use Prealloced_array or std::vector or something similar in C++ +#if defined(__cplusplus) + +#define init_dynamic_array please_use_an_appropriately_typed_container +#define my_init_dynamic_array please_use_an_appropriately_typed_container + +#else + +extern my_bool my_init_dynamic_array(DYNAMIC_ARRAY *array, + PSI_memory_key key, + uint element_size, + void *init_buffer, + uint init_alloc, + uint alloc_increment); +/* init_dynamic_array() function is deprecated */ +extern my_bool init_dynamic_array(DYNAMIC_ARRAY *array, uint element_size, + uint init_alloc, uint alloc_increment); +#define dynamic_element(array,array_index,type) \ + ((type)((array)->buffer) +(array_index)) + +#endif /* __cplusplus */ + +/* Some functions are still in use in C++, because HASH uses DYNAMIC_ARRAY */ +extern my_bool insert_dynamic(DYNAMIC_ARRAY *array, const void *element); +extern void *alloc_dynamic(DYNAMIC_ARRAY *array); +extern void *pop_dynamic(DYNAMIC_ARRAY*); +extern void get_dynamic(DYNAMIC_ARRAY *array, void *element, uint array_index); +extern void claim_dynamic(DYNAMIC_ARRAY *array); +extern void delete_dynamic(DYNAMIC_ARRAY *array); +extern void freeze_size(DYNAMIC_ARRAY *array); +static inline void reset_dynamic(DYNAMIC_ARRAY *array) +{ + array->elements= 0; +} + +extern my_bool init_dynamic_string(DYNAMIC_STRING *str, const char *init_str, + size_t init_alloc,size_t alloc_increment); +extern my_bool dynstr_append(DYNAMIC_STRING *str, const char *append); +my_bool dynstr_append_mem(DYNAMIC_STRING *str, const char *append, + size_t length); +extern my_bool dynstr_append_os_quoted(DYNAMIC_STRING *str, const char *append, + ...); +extern my_bool dynstr_set(DYNAMIC_STRING *str, const char *init_str); +extern my_bool dynstr_realloc(DYNAMIC_STRING *str, size_t additional_size); +extern my_bool dynstr_trunc(DYNAMIC_STRING *str, size_t n); +extern void dynstr_free(DYNAMIC_STRING *str); +#define alloc_root_inited(A) ((A)->min_malloc != 0) +#define ALLOC_ROOT_MIN_BLOCK_SIZE (MALLOC_OVERHEAD + sizeof(USED_MEM) + 8) +#define clear_alloc_root(A) do { (A)->free= (A)->used= (A)->pre_alloc= 0; (A)->min_malloc=0;} while(0) +extern void init_alloc_root(PSI_memory_key key, + MEM_ROOT *mem_root, size_t block_size, + size_t pre_alloc_size); +extern void *alloc_root(MEM_ROOT *mem_root, size_t Size); +extern void *multi_alloc_root(MEM_ROOT *mem_root, ...); +extern void claim_root(MEM_ROOT *root); +extern void free_root(MEM_ROOT *root, myf MyFLAGS); +extern void reset_root_defaults(MEM_ROOT *mem_root, size_t block_size, + size_t prealloc_size); +extern char *strdup_root(MEM_ROOT *root,const char *str); +static inline char *safe_strdup_root(MEM_ROOT *root, const char *str) +{ + return str ? strdup_root(root, str) : 0; +} +extern char *strmake_root(MEM_ROOT *root,const char *str,size_t len); +extern void *memdup_root(MEM_ROOT *root,const void *str, size_t len); +extern void set_memroot_max_capacity(MEM_ROOT *mem_root, size_t size); +extern void set_memroot_error_reporting(MEM_ROOT *mem_root, + my_bool report_error); +extern my_bool my_compress(uchar *, size_t *, size_t *); +extern my_bool my_uncompress(uchar *, size_t , size_t *); +extern uchar *my_compress_alloc(const uchar *packet, size_t *len, + size_t *complen); +extern int packfrm(uchar *, size_t, uchar **, size_t *); +extern int unpackfrm(uchar **, size_t *, const uchar *); + +extern ha_checksum my_checksum(ha_checksum crc, const uchar *mem, + size_t count); + +/* Wait a given number of microseconds */ +static inline void my_sleep(time_t m_seconds) +{ +#if defined(_WIN32) + Sleep((DWORD)m_seconds/1000+1); /* Sleep() has millisecond arg */ +#else + struct timeval t; + t.tv_sec= m_seconds / 1000000L; + t.tv_usec= m_seconds % 1000000L; + select(0,0,0,0,&t); /* sleep */ +#endif +} + +extern ulong crc32(ulong crc, const uchar *buf, uint len); +extern uint my_set_max_open_files(uint files); +void my_free_open_file_info(void); + +extern time_t my_time(myf flags); +extern ulonglong my_getsystime(void); +extern ulonglong my_micro_time(); +extern my_bool my_gethwaddr(uchar *to); + +#ifdef HAVE_SYS_MMAN_H +#include + +#ifndef MAP_NOSYNC +#define MAP_NOSYNC 0 +#endif + +/* + Not defined in FreeBSD 11. + Was never implemented in FreeBSD, so we just set it to 0. +*/ +#ifndef MAP_NORESERVE +#define MAP_NORESERVE 0 +#endif + +#ifdef HAVE_MMAP64 +#define my_mmap(a,b,c,d,e,f) mmap64(a,b,c,d,e,f) +#else +#define my_mmap(a,b,c,d,e,f) mmap(a,b,c,d,e,f) +#endif +#define my_munmap(a,b) munmap((a),(b)) + +#else +/* not a complete set of mmap() flags, but only those that nesessary */ +#define PROT_READ 1 +#define PROT_WRITE 2 +#define MAP_NORESERVE 0 +#define MAP_SHARED 0x0001 +#define MAP_PRIVATE 0x0002 +#define MAP_NOSYNC 0x0800 +#define MAP_FAILED ((void *)-1) +#define MS_SYNC 0x0000 + +void *my_mmap(void *, size_t, int, int, int, my_off_t); +int my_munmap(void *, size_t); +#endif + +/* my_getpagesize */ +static inline int my_getpagesize() +{ +#ifndef _WIN32 + return getpagesize(); +#else + SYSTEM_INFO si; + GetSystemInfo(&si); + return (int)si.dwPageSize; +#endif +} + +int my_msync(int, void *, size_t, int); + +/* character sets */ +extern void my_charset_loader_init_mysys(MY_CHARSET_LOADER *loader); +extern uint get_charset_number(const char *cs_name, uint cs_flags); +extern uint get_collation_number(const char *name); +extern const char *get_charset_name(uint cs_number); + +extern CHARSET_INFO *get_charset(uint cs_number, myf flags); +extern CHARSET_INFO *get_charset_by_name(const char *cs_name, myf flags); +extern CHARSET_INFO *my_collation_get_by_name(MY_CHARSET_LOADER *loader, + const char *name, myf flags); +extern CHARSET_INFO *get_charset_by_csname(const char *cs_name, + uint cs_flags, myf my_flags); +extern CHARSET_INFO *my_charset_get_by_name(MY_CHARSET_LOADER *loader, + const char *name, + uint cs_flags, myf my_flags); +extern my_bool resolve_charset(const char *cs_name, + const CHARSET_INFO *default_cs, + const CHARSET_INFO **cs); +extern my_bool resolve_collation(const char *cl_name, + const CHARSET_INFO *default_cl, + const CHARSET_INFO **cl); +extern void free_charsets(void); +extern char *get_charsets_dir(char *buf); +extern my_bool my_charset_same(const CHARSET_INFO *cs1, + const CHARSET_INFO *cs2); +extern my_bool init_compiled_charsets(myf flags); +extern void add_compiled_collation(CHARSET_INFO *cs); +extern size_t escape_string_for_mysql(const CHARSET_INFO *charset_info, + char *to, size_t to_length, + const char *from, size_t length); +#ifdef _WIN32 +/* File system character set */ +extern CHARSET_INFO *fs_character_set(void); +#endif +extern size_t escape_quotes_for_mysql(CHARSET_INFO *charset_info, + char *to, size_t to_length, + const char *from, size_t length, char quote); +#ifdef _WIN32 +extern my_bool have_tcpip; /* Is set if tcpip is used */ + +/* implemented in my_windac.c */ + +int my_security_attr_create(SECURITY_ATTRIBUTES **psa, const char **perror, + DWORD owner_rights, DWORD everybody_rights); + +void my_security_attr_free(SECURITY_ATTRIBUTES *sa); + +/* implemented in my_conio.c */ +my_bool my_win_is_console(FILE *file); +char *my_win_console_readline(const CHARSET_INFO *cs, char *mbbuf, size_t mbbufsize, + size_t *nread); +void my_win_console_write(const CHARSET_INFO *cs, const char *data, size_t datalen); +void my_win_console_fputs(const CHARSET_INFO *cs, const char *data); +void my_win_console_putc(const CHARSET_INFO *cs, int c); +void my_win_console_vfprintf(const CHARSET_INFO *cs, const char *fmt, va_list args); +int my_win_translate_command_line_args(const CHARSET_INFO *cs, int *ac, char ***av); +#endif /* _WIN32 */ + +#ifdef HAVE_PSI_INTERFACE +extern MYSQL_PLUGIN_IMPORT struct PSI_bootstrap *PSI_hook; +extern void set_psi_server(PSI *psi); +void my_init_mysys_psi_keys(void); +#endif + +struct st_mysql_file; +extern struct st_mysql_file *mysql_stdin; + +C_MODE_END +#endif /* _my_sys_h */ -- cgit v1.1