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SqMod/vendor/MDBC/include/ma_sys.h
Sandu Liviu Catalin b4bf96ce4b Add MariaDB Connector/C as a built-in alternative (v3.2.3).
2021-09-21 20:59:01 +03:00

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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02111-1301, USA */
#ifndef _my_sys_h
#define _my_sys_h
#ifdef __cplusplus
extern "C" {
#endif
#ifdef HAVE_AIOWAIT
#include <sys/asynch.h> /* Used by record-cache */
typedef struct my_aio_result {
aio_result_t result;
int pending;
} my_aio_result;
#endif
#ifndef _mariadb_ctype_h
#include <mariadb_ctype.h> /* for MARIADB_CHARSET_INFO */
#endif
#include <stdarg.h>
#define MYSYS_PROGRAM_USES_CURSES() \
do {\
ma_error_handler_hook = ma_message_curses;\
mysys_uses_curses=1;\
} while(0)
#define MYSYS_PROGRAM_DONT_USE_CURSES() \
do {\
ma_error_handler_hook = ma_message_no_curses; \
mysys_uses_curses=0; \
} while(0)
#define MY_INIT(name) \
do {\
ma_progname= name;\
ma_init();\
} while(0)
#define MAXMAPS (4) /* Number of error message maps */
#define ERRMOD (1000) /* Max number of errors in a map */
#define ERRMSGSIZE (SC_MAXWIDTH) /* Max length of a error message */
#define NRERRBUFFS (2) /* Buffers for parameters */
#define MY_FILE_ERROR ((uint) ~0)
/* 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/written */
#define MY_NABP 4 /* Error if not all bytes read/written */
#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_RAID 64 /* Support for RAID (not the "Johnson&Johnson"-s one ;) */
#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() copies 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_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 /* ma_malloc(), fill array with zero */
#define MY_ALLOW_ZERO_PTR 64 /* ma_realloc() ; zero ptr -> malloc */
#define MY_FREE_ON_ERROR 128 /* ma_realloc() ; Free old ptr on error */
#define MY_HOLD_ON_ERROR 256 /* ma_realloc() ; Return old ptr on error */
#define MY_THREADSAFE 128 /* pread/pwrite: Don't allow interrupts */
#define MY_DONT_OVERWRITE_FILE 1024 /* my_copy; Don't overwrite file */
#define MY_CHECK_ERROR 1 /* Params to ma_end; Check open-close */
#define MY_GIVE_INFO 2 /* Give time info about process*/
#define ME_HIGHBYTE 8 /* Shift for colours */
#define ME_NOCUR 1 /* Don't use curses message */
#define ME_OLDWIN 2 /* Use old window */
#define ME_BELL 4 /* Ring bell then printing message */
#define ME_HOLDTANG 8 /* Don't delete last keys */
#define ME_WAITTOT 16 /* Wait for errtime secs of for a action */
#define ME_WAITTANG 32 /* Wait for a user action */
#define ME_NOREFRESH 64 /* Don't refresh screen */
#define ME_NOINPUT 128 /* Don't use the input library */
#define ME_COLOUR1 ((1 << ME_HIGHBYTE)) /* Possibly error-colours */
#define ME_COLOUR2 ((2 << ME_HIGHBYTE))
#define ME_COLOUR3 ((3 << ME_HIGHBYTE))
/* My seek flags */
#define MY_SEEK_SET 0
#define MY_SEEK_CUR 1
#define MY_SEEK_END 2
/* My charsets_list flags */
#define MY_NO_SETS 0
#define MY_COMPILED_SETS 1 /* show compiled-in sets */
#define MY_CONFIG_SETS 2 /* sets that have a *.conf file */
#define MY_INDEX_SETS 4 /* all sets listed in the Index file */
#define MY_LOADED_SETS 8 /* the sets that are currently loaded */
/* 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 KEYCACHE_BLOCK_SIZE 1024
/* root_alloc flags */
#define MY_KEEP_PREALLOC 1
/* defines when allocating data */
#define my_checkmalloc() (0)
#undef TERMINATE
#define TERMINATE(A) {}
#define QUICK_SAFEMALLOC
#define NORMAL_SAFEMALLOC
#define ma_malloc_ci(SZ,FLAG) ma_malloc( SZ, FLAG )
#define CALLER_INFO_PROTO /* nothing */
#define CALLER_INFO /* nothing */
#define ORIG_CALLER_INFO /* nothing */
#ifdef HAVE_ALLOCA
#if defined(_AIX) && !defined(__GNUC__)
#pragma alloca
#endif /* _AIX */
#if defined(__GNUC__) && !defined(HAVE_ALLOCA_H)
#ifndef alloca
#define alloca __builtin_alloca
#endif
#endif /* GNUC */
#define my_alloca(SZ) alloca((size_t) (SZ))
#define my_afree(PTR) {}
#else
#define my_alloca(SZ) ma_malloc(SZ,MYF(0))
#define my_afree(PTR) ma_free(PTR)
#endif /* HAVE_ALLOCA */
#ifndef errno
#ifdef HAVE_ERRNO_AS_DEFINE
#include <errno.h> /* errno is a define */
#else
extern int errno; /* declare errno */
#endif
#endif
extern const char ** NEAR my_errmsg[];
extern char NEAR errbuff[NRERRBUFFS][ERRMSGSIZE];
/* tbr
extern int (*ma_error_handler_hook)(uint my_err, const char *str,myf MyFlags);
extern int (*fatal_ma_error_handler_hook)(uint my_err, const char *str,
myf MyFlags);
*/
/* charsets */
/* tbr
extern uint get_charset_number(const char *cs_name);
extern const char *get_charset_name(uint cs_number);
extern my_bool set_default_charset(uint cs, myf flags);
extern my_bool set_default_charset_by_name(const char *cs_name, myf flags);
extern void free_charsets(void);
extern char *list_charsets(myf want_flags);
extern char *get_charsets_dir(char *buf);
*/
extern MARIADB_CHARSET_INFO *get_charset(uint cs_number, myf flags);
extern MARIADB_CHARSET_INFO *get_charset_by_name(const char *cs_name);
extern MARIADB_CHARSET_INFO *get_charset_by_nr(uint cs_number);
/* string functions */
char *ma_strmake(register char *dst, register const char *src, size_t length);
/* statistics */
#ifdef TBR
extern ulong _my_cache_w_requests,_my_cache_write,_my_cache_r_requests,
_my_cache_read;
extern ulong _my_blocks_used,_my_blocks_changed;
extern ulong ma_file_opened,ma_stream_opened, ma_tmp_file_created;
extern my_bool key_cache_inited;
/* Point to current ma_message() */
extern void (*my_sigtstp_cleanup)(void),
/* Executed before jump to shell */
(*my_sigtstp_restart)(void),
(*my_abort_hook)(int);
/* Executed when coming from shell */
extern int NEAR ma_umask, /* Default creation mask */
NEAR ma_umask_dir,
NEAR my_recived_signals, /* Signals we have got */
NEAR my_safe_to_handle_signal, /* Set when allowed to SIGTSTP */
NEAR ma_dont_interrupt; /* call remember_intr when set */
extern my_bool NEAR mysys_uses_curses, ma_use_symdir;
extern size_t lCurMemory,lMaxMemory; /* from safemalloc */
extern ulong ma_default_record_cache_size;
extern my_bool NEAR ma_disable_locking,NEAR ma_disable_async_io,
NEAR ma_disable_flush_key_blocks, NEAR ma_disable_symlinks;
extern char wild_many,wild_one,wild_prefix;
extern const char *charsets_dir;
extern char *defaults_extra_file;
typedef struct wild_file_pack /* Struct to hold info when selecting files */
{
uint wilds; /* How many wildcards */
uint not_pos; /* Start of not-theese-files */
my_string *wild; /* Pointer to wildcards */
} WF_PACK;
struct my_rnd_struct {
unsigned long seed1,seed2,max_value;
double max_value_dbl;
};
#endif
typedef struct st_typelib { /* Different types saved here */
uint count; /* How many types */
const char *name; /* Name of typelib */
const char **type_names;
} TYPELIB;
enum cache_type {READ_CACHE,WRITE_CACHE,READ_FIFO,READ_NET,WRITE_NET};
enum flush_type { FLUSH_KEEP, FLUSH_RELEASE, FLUSH_IGNORE_CHANGED,
FLUSH_FORCE_WRITE};
typedef struct st_record_cache /* Used when caching records */
{
File file;
int rc_seek,error,inited;
uint rc_length,read_length,reclength;
my_off_t rc_record_pos,end_of_file;
unsigned char *rc_buff,*rc_buff2,*rc_pos,*rc_end,*rc_request_pos;
#ifdef HAVE_AIOWAIT
int use_async_io;
my_aio_result aio_result;
#endif
enum cache_type type;
} RECORD_CACHE;
typedef struct st_dynamic_array {
char *buffer;
uint elements,max_element;
uint alloc_increment;
uint size_of_element;
} DYNAMIC_ARRAY;
typedef struct st_dynamic_string {
char *str;
size_t length,max_length,alloc_increment;
} DYNAMIC_STRING;
typedef struct st_io_cache /* Used when caching files */
{
my_off_t pos_in_file,end_of_file;
unsigned char *rc_pos,*rc_end,*buffer,*rc_request_pos;
int (*read_function)(struct st_io_cache *,unsigned char *,uint);
char *file_name; /* if used with 'open_cached_file' */
char *dir,*prefix;
File file;
int seek_not_done,error;
uint buffer_length,read_length;
myf myflags; /* Flags used to my_read/my_write */
enum cache_type type;
#ifdef HAVE_AIOWAIT
uint inited;
my_off_t aio_read_pos;
my_aio_result aio_result;
#endif
} IO_CACHE;
typedef int (*qsort2_cmp)(const void *, const void *, const void *);
/* defines for mf_iocache */
/* Test if buffer is inited */
#define my_b_clear(info) do{(info)->buffer= 0;} while (0)
#define my_b_inited(info) ((info)->buffer)
#define my_b_EOF INT_MIN
#define my_b_read(info,Buffer,Count) \
((info)->rc_pos + (Count) <= (info)->rc_end ?\
(memcpy((Buffer),(info)->rc_pos,(size_t) (Count)), \
((info)->rc_pos+=(Count)),0) :\
(*(info)->read_function)((info),(Buffer),(Count)))
#define my_b_get(info) \
((info)->rc_pos != (info)->rc_end ?\
((info)->rc_pos++, (int) (uchar) (info)->rc_pos[-1]) :\
_my_b_get(info))
#define my_b_write(info,Buffer,Count) \
((info)->rc_pos + (Count) <= (info)->rc_end ?\
(memcpy((info)->rc_pos,(Buffer),(size_t) (Count)), \
((info)->rc_pos+=(Count)),0) :\
_my_b_write((info),(Buffer),(Count)))
/* my_b_write_byte doesn't have any err-check */
#define my_b_write_byte(info,chr) \
(((info)->rc_pos < (info)->rc_end) ?\
((*(info)->rc_pos++)=(chr)) :\
(_my_b_write((info),0,0) , ((*(info)->rc_pos++)=(chr))))
#define my_b_fill_cache(info) \
(((info)->rc_end=(info)->rc_pos),(*(info)->read_function)((info),0,0))
#define my_b_tell(info) ((info)->pos_in_file + \
((info)->rc_pos - (info)->rc_request_pos))
#define my_b_bytes_in_cache(info) ((uint) ((info)->rc_end - (info)->rc_pos))
typedef struct st_changeable_var {
const char *name; /* Name of variable */
long *varptr; /* Pointer to variable */
long def_value, /* Default value */
min_value, /* Min allowed value */
max_value, /* Max allowed value */
sub_size, /* Subtract this from given value */
block_size; /* Value should be a mult. of this */
} CHANGEABLE_VAR;
/* structs for ma_alloc_root */
#ifndef ST_MA_USED_MEM_DEFINED
#define ST_MA_USED_MEM_DEFINED
typedef struct st_ma_used_mem { /* struct for once_alloc */
struct st_ma_used_mem *next; /* Next block in use */
size_t left; /* memory left in block */
size_t size; /* Size of block */
} MA_USED_MEM;
typedef struct st_ma_mem_root {
MA_USED_MEM *free;
MA_USED_MEM *used;
MA_USED_MEM *pre_alloc;
size_t min_malloc;
size_t block_size;
unsigned int block_num;
unsigned int first_block_usage;
void (*error_handler)(void);
} MA_MEM_ROOT;
#endif
/* Prototypes for mysys and my_func functions */
extern void * _mymalloc(size_t uSize,const char *sFile,
uint uLine, myf MyFlag);
extern void * _myrealloc(void * pPtr,size_t uSize,const char *sFile,
uint uLine, myf MyFlag);
extern void *ma_multi_malloc(myf MyFlags, ...);
extern void _myfree(void * pPtr,const char *sFile,uint uLine, myf MyFlag);
extern int _sanity(const char *sFile,unsigned int uLine);
#ifndef TERMINATE
extern void TERMINATE(FILE *file);
#endif
extern void ma_init_glob_errs(void);
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 int my_fclose(FILE *fd,myf MyFlags);
extern int my_chsize(File fd,my_off_t newlength,myf MyFlags);
extern int ma_error _VARARGS((int nr,myf MyFlags, ...));
extern int ma_printf_error _VARARGS((uint my_err, const char *format,
myf MyFlags, ...)
__attribute__ ((format (printf, 2, 4))));
extern int ma_vsnprintf( char *str, size_t n,
const char *format, va_list ap );
extern int ma_snprintf(char* to, size_t n, const char* fmt, ...);
extern int ma_message(uint my_err, const char *str,myf MyFlags);
extern int _mariadb_stderr_out(unsigned int error, const char *errmsg, myf MyFlags);
extern void ma_init(void);
extern void ma_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 my_string my_filename(File fd);
#ifndef THREAD
extern void dont_break(void);
extern void allow_break(void);
#else
#define dont_break()
#define allow_break()
#endif
extern void caseup(my_string str,uint length);
extern void casedn(my_string str,uint length);
extern void caseup_str(my_string str);
extern void casedn_str(my_string str);
extern void case_sort(my_string str,uint length);
extern uint ma_dirname_part(my_string to,const char *name);
extern uint ma_dirname_length(const char *name);
#define base_name(A) ((A)+dirname_length(A))
extern int test_if_hard_path(const char *dir_name);
extern char *ma_convert_dirname(my_string name);
extern void to_unix_path(my_string name);
extern my_string ma_fn_ext(const char *name);
extern my_string fn_same(my_string toname,const char *name,int flag);
extern my_string ma_fn_format(my_string to,const char *name,const char *dsk,
const char *form,int flag);
extern size_s ma_strlength(const char *str);
extern void ma_pack_dirname(my_string to,const char *from);
extern uint unma_pack_dirname(my_string to,const char *from);
extern uint ma_cleanup_dirname(my_string to,const char *from);
extern uint ma_system_filename(my_string to,const char *from);
extern my_string ma_unpack_filename(my_string to,const char *from);
extern my_string ma_intern_filename(my_string to,const char *from);
extern my_string directory_file_name(my_string dst, const char *src);
extern int pack_filename(my_string to, const char *name, size_s max_length);
extern my_string my_path(my_string to,const char *progname,
const char *own_pathname_part);
extern my_string my_load_path(my_string to, const char *path,
const char *own_path_prefix);
extern int wild_compare(const char *str,const char *wildstr);
extern my_string my_strcasestr(const char *src,const char *suffix);
extern int my_strcasecmp(const char *s,const char *t);
extern int my_strsortcmp(const char *s,const char *t);
extern int my_casecmp(const char *s,const char *t,uint length);
extern int my_sortcmp(const char *s,const char *t,uint length);
extern int my_sortncmp(const char *s,uint s_len, const char *t,uint t_len);
#ifdef TBR
extern WF_PACK *wf_comp(my_string str);
extern int wf_test(struct wild_file_pack *wf_pack,const char *name);
extern void wf_end(struct wild_file_pack *buffer);
extern size_s strip_sp(my_string str);
extern void get_date(my_string to,int timeflag,time_t use_time);
extern void soundex(my_string out_pntr, my_string in_pntr,pbool remove_garbage);
extern int init_record_cache(RECORD_CACHE *info,uint cachesize,File file,
uint reclength,enum cache_type type,
pbool use_async_io);
extern int read_cache_record(RECORD_CACHE *info,unsigned char *to);
extern int end_record_cache(RECORD_CACHE *info);
extern int write_cache_record(RECORD_CACHE *info,my_off_t filepos,
const unsigned char *record,uint length);
extern int flush_write_cache(RECORD_CACHE *info);
extern long my_clock(void);
extern sig_handler sigtstp_handler(int signal_number);
extern void handle_recived_signals(void);
extern int init_key_cache(ulong use_mem,ulong leave_this_much_mem);
extern unsigned char *key_cache_read(File file,my_off_t filepos,unsigned char* buff,uint length,
uint block_length,int return_buffer);
extern int key_cache_write(File file,my_off_t filepos,unsigned char* buff,uint length,
uint block_length,int force_write);
extern int flush_key_blocks(int file, enum flush_type type);
extern void end_key_cache(void);
extern sig_handler my_set_alarm_variable(int signo);
extern void my_string_ptr_sort(void *base,uint items,size_s size);
extern void radixsort_for_str_ptr(uchar* base[], uint number_of_elements,
size_s size_of_element,uchar *buffer[]);
extern qsort_t qsort2(void *base_ptr, size_t total_elems, size_t size,
qsort2_cmp cmp, void *cmp_argument);
extern qsort2_cmp get_ptr_compare(uint);
extern int init_io_cache(IO_CACHE *info,File file,uint 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 int _my_b_read(IO_CACHE *info,unsigned char *Buffer,uint Count);
extern int _my_b_net_read(IO_CACHE *info,unsigned char *Buffer,uint Count);
extern int _my_b_get(IO_CACHE *info);
extern int _my_b_async_read(IO_CACHE *info,unsigned char *Buffer,uint Count);
extern int _my_b_write(IO_CACHE *info,const unsigned char *Buffer,uint Count);
extern int my_block_write(IO_CACHE *info, const unsigned char *Buffer,
uint Count, my_off_t pos);
extern int flush_io_cache(IO_CACHE *info);
extern int end_io_cache(IO_CACHE *info);
extern uint my_b_fill(IO_CACHE *info);
extern void my_b_seek(IO_CACHE *info,my_off_t pos);
extern uint my_b_gets(IO_CACHE *info, char *to, uint max_length);
extern uint my_b_printf(IO_CACHE *info, const char* fmt, ...);
extern uint 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, uint 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);
#define ma_init_dynamic_array(A,B,C,D) init_dynamic_array(A,B,C,D CALLER_INFO)
#endif
extern my_bool ma_init_dynamic_array(DYNAMIC_ARRAY *array,uint element_size,
uint init_alloc,uint alloc_increment CALLER_INFO_PROTO);
#define ma_init_dynamic_array_ci(A,B,C,D) ma_init_dynamic_array(A,B,C,D ORIG_CALLER_INFO)
extern my_bool ma_insert_dynamic(DYNAMIC_ARRAY *array,void * element);
extern unsigned char *ma_alloc_dynamic(DYNAMIC_ARRAY *array);
extern unsigned char *ma_pop_dynamic(DYNAMIC_ARRAY*);
extern my_bool ma_set_dynamic(DYNAMIC_ARRAY *array,void * element,uint array_index);
extern void ma_get_dynamic(DYNAMIC_ARRAY *array,void * element,uint array_index);
extern void ma_delete_dynamic(DYNAMIC_ARRAY *array);
extern void ma_delete_dynamic_element(DYNAMIC_ARRAY *array, uint array_index);
extern void ma_freeze_size(DYNAMIC_ARRAY *array);
#define dynamic_array_ptr(array,array_index) ((array)->buffer+(array_index)*(array)->size_of_element)
#define dynamic_element(array,array_index,type) ((type)((array)->buffer) +(array_index))
#define push_dynamic(A,B) ma_insert_dynamic(A,B)
extern int ma_find_type(my_string x,TYPELIB *typelib,uint full_name);
extern void ma_make_type(my_string to,uint nr,TYPELIB *typelib);
extern const char *ma_get_type(TYPELIB *typelib,uint nr);
extern my_bool ma_init_dynamic_string(DYNAMIC_STRING *str, const char *init_str,
size_t init_alloc, size_t alloc_increment);
extern my_bool ma_dynstr_append(DYNAMIC_STRING *str, const char *append);
extern my_bool ma_dynstr_append_quoted(DYNAMIC_STRING *str,
const char *append, size_t len,
char quote);
my_bool ma_dynstr_append_mem(DYNAMIC_STRING *str, const char *append,
size_t length);
extern my_bool ma_dynstr_set(DYNAMIC_STRING *str, const char *init_str);
extern my_bool ma_dynstr_realloc(DYNAMIC_STRING *str, size_t additional_size);
extern void ma_dynstr_free(DYNAMIC_STRING *str);
void set_all_changeable_vars(CHANGEABLE_VAR *vars);
my_bool set_changeable_var(my_string str,CHANGEABLE_VAR *vars);
my_bool set_changeable_varval(const char *var, ulong val,
CHANGEABLE_VAR *vars);
#define ma_alloc_root_inited(A) ((A)->min_malloc != 0)
void ma_init_alloc_root(MA_MEM_ROOT *mem_root, size_t block_size, size_t pre_alloc_size);
void *ma_alloc_root(MA_MEM_ROOT *mem_root, size_t Size);
void ma_free_root(MA_MEM_ROOT *root, myf MyFLAGS);
char *ma_strdup_root(MA_MEM_ROOT *root,const char *str);
char *ma_memdup_root(MA_MEM_ROOT *root,const char *str, size_t len);
void ma_free_defaults(char **argv);
void ma_print_defaults(const char *conf_file, const char **groups);
my_bool _mariadb_compress(unsigned char *, size_t *, size_t *);
my_bool _mariadb_uncompress(unsigned char *, size_t *, size_t *);
unsigned char *_mariadb_compress_alloc(const unsigned char *packet, size_t *len, size_t *complen);
ulong checksum(const unsigned char *mem, uint count);
#if defined(_MSC_VER) && !defined(_WIN32)
extern void sleep(int sec);
#endif
#ifdef __cplusplus
}
#endif
#endif /* _my_sys_h */
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