write_lock_mechanism.h File Reference

#include "fileset.h"

Go to the source code of this file.

Classes
struct	lockfile_data

Macros
#define	LOCK_FILE_ERROR   -4
#define	LOCK_FILESET_FAIL   -6
#define	LOCK_INVALID   -1
#define	LOCK_PARSE_ERROR   -2
#define	LOCK_PROCESS_HAS_PRIORITY   1
#define	LOCK_PROCESS_NO_PRIORITY   -1
#define	LOCK_STALE_ERROR   -3
#define	LOCK_STALE_SEC   300
#define	LOCK_STATUS_OK   0
#define	LOCK_TIMEOUT   9000
#define	LOCK_TIMEOUT_ERROR   -5
#define	LOCK_VALID   0
#define	MAX_LOCKNAME_LEN   512

Typedefs
typedef struct lockfile_data	lockfile_data_struct

Functions
int	at_front (char *rootname, char *lockfile_name, int cand_seq_no)
int	check_stale (lockfile_data_struct *other)
void	clear_global_lockfile_data ()
int	create_lockfile (char *rootname, char *lockfile_name, int cand_seq_no)
void	init_lockfile_data (lockfile_data_struct *data)
int	lock_has_priority (lockfile_data_struct *other)
int	parse_lockfile_name (char *lockfile_name_base, lockfile_data_struct *result)
void	remove_lockfile ()
int	wait_for_write_lock (char *rootname, char *lockfile_name, struct fileset *fset)

Variables
lockfile_data_struct	global_lockfile_data

---

Class Documentation

lockfile_data

struct lockfile_data

Class Members
char	hostname[256]
char	lockfile_name[MAX_LOCKNAME_LEN]
unsigned int	pid
unsigned int	seq_number
unsigned long int	time_sec
unsigned long int	time_usec
int	validity

Macro Definition Documentation

LOCK_FILE_ERROR

#define LOCK_FILE_ERROR   -4

LOCK_FILESET_FAIL

#define LOCK_FILESET_FAIL   -6

LOCK_INVALID

#define LOCK_INVALID   -1

LOCK_PARSE_ERROR

#define LOCK_PARSE_ERROR   -2

LOCK_PROCESS_HAS_PRIORITY

#define LOCK_PROCESS_HAS_PRIORITY   1

LOCK_PROCESS_NO_PRIORITY

#define LOCK_PROCESS_NO_PRIORITY   -1

LOCK_STALE_ERROR

#define LOCK_STALE_ERROR   -3

LOCK_STALE_SEC

#define LOCK_STALE_SEC   300

LOCK_STATUS_OK

#define LOCK_STATUS_OK   0

LOCK_TIMEOUT

#define LOCK_TIMEOUT   9000

LOCK_TIMEOUT_ERROR

#define LOCK_TIMEOUT_ERROR   -5

LOCK_VALID

#define LOCK_VALID   0

MAX_LOCKNAME_LEN

#define MAX_LOCKNAME_LEN   512

Typedef Documentation

lockfile_data_struct

typedef struct lockfile_data lockfile_data_struct

Function Documentation

at_front()

int at_front	(	char *	rootname,
		char *	lockfile_name,
		int	cand_seq_no
	)

check_stale()

int check_stale

(

lockfile_data_struct *

other

)

clear_global_lockfile_data()

void clear_global_lockfile_data

(

)

create_lockfile()

int create_lockfile	(	char *	rootname,
		char *	lockfile_name,
		int	cand_seq_no
	)

init_lockfile_data()

void init_lockfile_data

(

lockfile_data_struct *

data

)

lock_has_priority()

int lock_has_priority

(

lockfile_data_struct *

other

)

parse_lockfile_name()

int parse_lockfile_name	(	char *	lockfile_name_base,
		lockfile_data_struct *	result
	)

remove_lockfile()

void remove_lockfile

(

)

wait_for_write_lock()

int wait_for_write_lock	(	char *	rootname,
		char *	lockfile_name,
		struct fileset *	fset
	)

Variable Documentation

global_lockfile_data

lockfile_data_struct global_lockfile_data

extern