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added pre/post read callbacks to IO_CACHE

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#ifdefed out code not used in the server from log events
started on new LOAD DATA INFILE events


include/my_sys.h:
  added pre/post read callbacks to IO_CACHe
mysys/mf_iocache.c:
  pre/post read callbacks
sql/log_event.cc:
  cleanup to #ifdef out unneeded code in the server
  started work on new Load data infile events
sql/log_event.h:
  clean-up plus start of new LOAD DATA INFILE events work
sql/mf_iocache.cc:
  pre/post read callbacks
sql/sql_class.cc:
  file_id
sql/sql_class.h:
  file_id
This commit is contained in:
unknown 2001-07-20 16:22:54 -06:00
parent bab169b692
commit e642692a5d
7 changed files with 132 additions and 8 deletions
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5
include/my_sys.h
View File

@ -270,12 +270,17 @@ typedef struct st_dynamic_string {
uint 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 /* Used when cacheing files */
{
my_off_t pos_in_file,end_of_file;
byte *rc_pos,*rc_end,*buffer,*rc_request_pos;
int (*read_function)(struct st_io_cache *,byte *,uint);
/* callbacks when the actual read I/O happens */
IO_CACHE_CALLBACK pre_read;
IO_CACHE_CALLBACK post_read;
char *file_name; /* if used with 'open_cached_file' */
char *dir,*prefix;
File file;

6
mysys/mf_iocache.c
View File

@ -56,6 +56,7 @@ int init_io_cache(IO_CACHE *info, File file, uint cachesize,
DBUG_PRINT("enter",("type: %d pos: %ld",(int) type, (ulong) seek_offset));
info->file=file;
info->pre_read = info->post_read = 0;
if (!cachesize)
if (! (cachesize= my_default_record_cache_size))
DBUG_RETURN(1); /* No cache requested */
@ -467,8 +468,13 @@ int _my_b_async_read(register IO_CACHE *info, byte *Buffer, uint Count)
int _my_b_get(IO_CACHE *info)
{
byte buff;
IO_CACHE_CALLBACK pre_read,post_read;
if ((pre_read = info->pre_read))
(*pre_read)(info);
if ((*(info)->read_function)(info,&buff,1))
return my_b_EOF;
if ((post_read = info->post_read))
(*post_read)(info);
return (int) (uchar) buff;
}

57
sql/log_event.cc
View File

@ -23,7 +23,7 @@
#include "slave.h"
#endif /* MYSQL_CLIENT */
#ifdef MYSQL_CLIENT
static void pretty_print_char(FILE* file, int c)
{
fputc('\'', file);
@ -41,6 +41,7 @@ static void pretty_print_char(FILE* file, int c)
}
fputc('\'', file);
}
#endif
#ifndef MYSQL_CLIENT
@ -444,6 +445,7 @@ Log_event* Log_event::read_log_event(const char* buf, int event_len)
return NULL; // default value
}
#ifdef MYSQL_CLIENT
void Log_event::print_header(FILE* file)
{
fputc('#', file);
@ -508,6 +510,8 @@ void Rotate_log_event::print(FILE* file, bool short_form, char* last_db)
fflush(file);
}
#endif /* #ifdef MYSQL_CLIENT */
Start_log_event::Start_log_event(const char* buf) :Log_event(buf)
{
binlog_version = uint2korr(buf + LOG_EVENT_HEADER_LEN +
@ -576,6 +580,8 @@ Query_log_event::Query_log_event(const char* buf, int event_len):
*((char*)query+q_len) = 0;
}
#ifdef MYSQL_CLIENT
void Query_log_event::print(FILE* file, bool short_form, char* last_db)
{
char buff[40],*end; // Enough for SET TIMESTAMP
@ -604,6 +610,8 @@ void Query_log_event::print(FILE* file, bool short_form, char* last_db)
fprintf(file, ";\n");
}
#endif
int Query_log_event::write_data(IO_CACHE* file)
{
if (!query) return -1;
@ -644,6 +652,7 @@ int Intvar_log_event::write_data(IO_CACHE* file)
return my_b_write(file, (byte*) buf, sizeof(buf));
}
#ifdef MYSQL_CLIENT
void Intvar_log_event::print(FILE* file, bool short_form, char* last_db)
{
char llbuff[22];
@ -667,6 +676,7 @@ void Intvar_log_event::print(FILE* file, bool short_form, char* last_db)
fflush(file);
}
#endif
int Load_log_event::write_data(IO_CACHE* file)
{
@ -742,6 +752,7 @@ void Load_log_event::copy_log_event(const char *buf, ulong data_len)
field_block_len;
}
#ifdef MYSQL_CLIENT
void Load_log_event::print(FILE* file, bool short_form, char* last_db)
{
@ -825,6 +836,8 @@ void Load_log_event::print(FILE* file, bool short_form, char* last_db)
fprintf(file, ";\n");
}
#endif /* #ifdef MYSQL_CLIENT */
#ifndef MYSQL_CLIENT
void Log_event::set_log_seq(THD* thd, MYSQL_LOG* log)
@ -879,6 +892,8 @@ Slave_log_event::~Slave_log_event()
my_free(mem_pool, MYF(MY_ALLOW_ZERO_PTR));
}
#ifdef MYSQL_CLIENT
void Slave_log_event::print(FILE* file, bool short_form = 0,
char* last_db = 0)
{
@ -892,6 +907,8 @@ void Slave_log_event::print(FILE* file, bool short_form = 0,
llstr(master_pos, llbuff));
}
#endif
int Slave_log_event::get_data_size()
{
return master_host_len + master_log_len + 1 + SL_MASTER_HOST_OFFSET;
@ -934,3 +951,41 @@ Slave_log_event::Slave_log_event(const char* buf, int event_len):
mem_pool[event_len] = 0;
init_from_mem_pool(event_len);
}
#ifndef MYSQL_CLIENT
Create_file_log_event::Create_file_log_event(THD* thd, TABLE_LIST * table,
char* block_arg,
uint block_len_arg) :
Log_event(thd->start_time), db(table->db),tbl_name(table->real_name),
db_len(strlen(table->db)),tbl_name_len(strlen(table->real_name)),
block(block_arg),block_len(block_len_arg),
file_id(thd->file_id = thd->query_id)
{
set_log_seq(thd, &mysql_bin_log);
}
#endif
int Create_file_log_event::write_data(IO_CACHE* file)
{
return 0;
}
#ifdef MYSQL_CLIENT
void Create_file_log_event::print(FILE* file, bool short_form = 0,
char* last_db = 0)
{
}
#endif
#ifndef MYSQL_CLIENT
void Create_file_log_event::pack_info(String* packet)
{
}
#endif

64
sql/log_event.h
View File

@ -55,6 +55,7 @@
#define LOAD_HEADER_LEN (4 + 4 + 4 + 1 +1 + 4)
#define START_HEADER_LEN (2 + ST_SERVER_VER_LEN + 4)
#define ROTATE_HEADER_LEN 8
#define CREATE_FILE_HEADER_LEN 6
/* event header offsets */
@ -108,6 +109,7 @@
#define QUERY_DATA_OFFSET (LOG_EVENT_HEADER_LEN+QUERY_HEADER_LEN)
#define ROTATE_EVENT_OVERHEAD (LOG_EVENT_HEADER_LEN+ROTATE_HEADER_LEN)
#define LOAD_EVENT_OVERHEAD (LOG_EVENT_HEADER_LEN+LOAD_HEADER_LEN+sizeof(sql_ex_info))
#define CREATE_FILE_EVENT_OVERHEAD (LOG_EVENT_HEADER_LEN+CREATE_FILE_HEADER_LEN)
#define BINLOG_MAGIC "\xfe\x62\x69\x6e"
@ -116,7 +118,8 @@
enum Log_event_type { START_EVENT = 1, QUERY_EVENT =2,
STOP_EVENT=3, ROTATE_EVENT = 4, INTVAR_EVENT=5,
LOAD_EVENT=6, SLAVE_EVENT=7, FILE_EVENT=8};
LOAD_EVENT=6, SLAVE_EVENT=7, CREATE_FILE_EVENT=8,
APPEND_TO_FILE_EVENT=9, EXEC_LOAD_EVENT=10, DELETE_FILE_EVENT=11};
enum Int_event_type { INVALID_INT_EVENT = 0, LAST_INSERT_ID_EVENT = 1, INSERT_ID_EVENT = 2
};
@ -175,10 +178,11 @@ public:
virtual ~Log_event() {}
virtual int get_data_size() { return 0;}
#ifdef MYSQL_CLIENT
virtual void print(FILE* file, bool short_form = 0, char* last_db = 0) = 0;
void print_timestamp(FILE* file, time_t *ts = 0);
void print_header(FILE* file);
#endif
// if mutex is 0, the read will proceed without mutex
static Log_event* read_log_event(IO_CACHE* file, pthread_mutex_t* log_lock);
@ -250,8 +254,9 @@ public:
+ 2 // error_code
;
}
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
#endif
};
class Slave_log_event: public Log_event
@ -276,7 +281,9 @@ public:
~Slave_log_event();
int get_data_size();
Log_event_type get_type_code() { return SLAVE_EVENT; }
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
#endif
int write_data(IO_CACHE* file );
};
@ -419,8 +426,9 @@ public:
+ sizeof(sql_ex) + field_block_len + num_fields*sizeof(uchar) ;
;
}
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
#endif
};
extern char server_version[SERVER_VERSION_LENGTH];
@ -448,8 +456,10 @@ public:
}
#ifndef MYSQL_CLIENT
void pack_info(String* packet);
#endif
#endif
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
#endif
};
class Intvar_log_event: public Log_event
@ -470,8 +480,9 @@ public:
void pack_info(String* packet);
#endif
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
#endif
};
class Stop_log_event: public Log_event
@ -484,7 +495,9 @@ public:
}
~Stop_log_event() {}
Log_event_type get_type_code() { return STOP_EVENT;}
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
#endif
};
class Rotate_log_event: public Log_event
@ -513,13 +526,50 @@ public:
Log_event_type get_type_code() { return ROTATE_EVENT;}
int get_data_size() { return ident_len + ROTATE_HEADER_LEN;}
int write_data(IO_CACHE* file);
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
#endif
#ifndef MYSQL_CLIENT
void pack_info(String* packet);
#endif
};
/* the classes below are for the new LOAD DATA INFILE logging */
class Create_file_log_event: public Log_event
{
public:
char* db;
char* tbl_name;
uint db_len;
uint tbl_name_len;
char* block;
uint block_len;
uint file_id;
#ifndef MYSQL_CLIENT
Create_file_log_event(THD* thd, TABLE_LIST * table, char* block_arg,
uint block_len_arg);
#endif
Create_file_log_event(const char* buf, int event_len);
~Create_file_log_event()
{
}
Log_event_type get_type_code() { return CREATE_FILE_EVENT;}
int get_data_size() { return tbl_name_len + block_len +
CREATE_FILE_HEADER_LEN ;}
int write_data(IO_CACHE* file);
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
#endif
#ifndef MYSQL_CLIENT
void pack_info(String* packet);
#endif
};
#endif

6
sql/mf_iocache.cc
View File

@ -57,6 +57,7 @@ int init_io_cache(IO_CACHE *info, File file, uint cachesize,
/* There is no file in net_reading */
info->file= file;
info->pre_read = info->post_read = 0;
if (!cachesize)
if (! (cachesize= my_default_record_cache_size))
DBUG_RETURN(1); /* No cache requested */
@ -535,8 +536,13 @@ int _my_b_async_read(register IO_CACHE *info, byte *Buffer, uint Count)
int _my_b_get(IO_CACHE *info)
{
byte buff;
IO_CACHE_CALLBACK pre_read,post_read;
if ((pre_read = info->pre_read))
(*pre_read)(info);
if ((*(info)->read_function)(info,&buff,1))
return my_b_EOF;
if ((post_read = info->post_read))
(*post_read)(info);
return (int) (uchar) buff;
}

1
sql/sql_class.cc
View File

@ -99,6 +99,7 @@ THD::THD():user_time(0),fatal_error(0),last_insert_id_used(0),
slave_thread = 0;
slave_proxy_id = 0;
log_seq = 0;
file_id = 0;
cond_count=0;
convert_set=0;
mysys_var=0;

1
sql/sql_class.h
View File

@ -248,6 +248,7 @@ public:
enum enum_server_command command;
uint32 server_id;
uint32 log_seq;
uint32 file_id; // for LOAD DATA INFILE
const char *where;
time_t start_time,time_after_lock,user_time;
time_t connect_time,thr_create_time; // track down slow pthread_create