Commit 81b97c48 authored by unknown's avatar unknown
Browse files

SHOW TABLE STATUS now prints create_time, update_time and check_time 

for InnoDB tables. Note that these times may always be correct ones,
because for example ALTER TABLE creates a table again.



innobase/include/os0file.h:
  Added information of file timestamps and a function os_file_get_status
  to get that information using stat().
innobase/os/os0file.c:
  Added function that return information obout the specified file.
sql/ha_innodb.cc:
  Get timestamps for the file where the table is stored.
parent 433aec14

innobase/include/os0file.h

+18 −5
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ Created 10/21/1995 Heikki Tuuri 
#ifndef __WIN__

#include <dirent.h>

#include <sys/stat.h>

#include <time.h>

#endif



extern ibool	os_do_not_call_flush_at_each_write;
@@ -142,12 +143,15 @@ bigger than 4000 bytes */ 
#define OS_FILE_MAX_PATH	4000



/* Struct used in fetching information of a file in a directory */

typedef struct os_file_stat_struct	os_file_stat_t;

struct os_file_stat_struct{

	char		name[OS_FILE_MAX_PATH];	/* path to a file */

	os_file_type_t	type;			/* file type */

	ib_longlong	size;			/* file size */

	time_t          ctime;			/* creation time */

	time_t		mtime;			/* modification time */

	time_t		atime;			/* access time */

};

typedef struct os_file_stat_struct	os_file_stat_t;



#ifdef __WIN__

typedef HANDLE  os_file_dir_t;	/* directory stream */
@@ -686,5 +690,14 @@ no pending io operations. */ 
ibool

os_aio_all_slots_free(void);

/*=======================*/

				/* out: TRUE if all free */



/***********************************************************************

This function returns information about the specified file */

ibool

os_file_get_status(

/*===============*/

					/* out: TRUE if stat information found */

	const char*     path,		/* in:  pathname of the file */

	os_file_stat_t* stat_info);	/* information of a file in a directory */



#endif

innobase/os/os0file.c

+77 −0
Original line number Diff line number Diff line
@@ -2359,6 +2359,83 @@ os_file_status( 
#endif

}



/***********************************************************************

This function returns information about the specified file */



ibool

os_file_get_status(

/*===========*/

				/* out: TRUE if stat information found */

	const char*	path,	/* in:  pathname of the file */

	os_file_stat_t* stat_info) /* information of a file in a directory */

{

#ifdef __WIN__

	int		ret;

	struct _stat	statinfo;

	

	ret = _stat(path, &statinfo);

	if (ret && (errno == ENOENT || errno == ENOTDIR)) {

		/* file does not exist */



		return(FALSE);

	} else if (ret) {

		/* file exists, but stat call failed */

		

		os_file_handle_error_no_exit(0, path, "stat");

		

		return(FALSE);

	}

	if (_S_IFDIR & statinfo.st_mode) {

		stat_info->type = OS_FILE_TYPE_DIR;

	} else if (_S_IFREG & statinfo.st_mode) {

	        stat_info->type = OS_FILE_TYPE_FILE;

	} else {

	        stat_info_>type = OS_FILE_TYPE_UNKNOWN;

	}



	stat_info->ctime = statinfo.st_ctime;

	stat_info->atime = statinfo.st_atime;

	stat_info->mtime = statinfo.st_mtime;

	stat_info->size  = statinfo.st_size;

	

	return(TRUE);

#else

	int		ret;

	struct stat	statinfo;

	

	ret = stat(path, &statinfo);



	if (ret && (errno == ENOENT || errno == ENOTDIR)) {

		/* file does not exist */



		return(FALSE);

	} else if (ret) {

		/* file exists, but stat call failed */

		

		os_file_handle_error_no_exit(0, path, "stat");

		

		return(FALSE);

	}

	    

	if (S_ISDIR(statinfo.st_mode)) {

		stat_info->type = OS_FILE_TYPE_DIR;

	} else if (S_ISLNK(statinfo.st_mode)) {

	        stat_info->type = OS_FILE_TYPE_LINK;

	} else if (S_ISREG(statinfo.st_mode)) {

	        stat_info->type = OS_FILE_TYPE_FILE;

	} else {

	        stat_info->type = OS_FILE_TYPE_UNKNOWN;

	}



	stat_info->ctime = statinfo.st_ctime;

	stat_info->atime = statinfo.st_atime;

	stat_info->mtime = statinfo.st_mtime;

	stat_info->size  = statinfo.st_size;

	

	return(TRUE);

#endif

}



/* path name separator character */

#ifdef __WIN__

#  define OS_FILE_PATH_SEPARATOR	'\\'

sql/ha_innodb.cc

+21 −0
Original line number Diff line number Diff line
@@ -4337,6 +4337,8 @@ ha_innobase::info( 
	ha_rows		rec_per_key;

	ulong		j;

	ulong		i;

	char		path[FN_REFLEN];

	os_file_stat_t  stat_info;



 	DBUG_ENTER("info");
@@ -4374,6 +4376,25 @@ ha_innobase::info( 


		prebuilt->trx->op_info = (char*)

		                          "returning various info to MySQL";



		if (ib_table->space != 0) {

			my_snprintf(path, sizeof(path), "%s/%s%s",

				    mysql_data_home, ib_table->name,

				    ".ibd");

			unpack_filename(path,path);

		} else {

			my_snprintf(path, sizeof(path), "%s/%s%s", 

				    mysql_data_home, ib_table->name,

				    reg_ext);

		

			unpack_filename(path,path);

		}



		if (os_file_get_status(path,&stat_info)) {

			create_time = stat_info.ctime;

			check_time  = stat_info.atime;

			update_time = stat_info.mtime;

		}

 	}



	if (flag & HA_STATUS_VARIABLE) {