hslot.c File Reference

USRLOC - Hash table collision slot related functions

• Module: Usrloc :: User location module.

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#include "hslot.h"

Include dependency graph for hslot.c:

Go to the source code of this file.

Functions
void	deinit_slot (hslot_t *_s)
	Deinitialize given slot structure.
void	init_slot (struct udomain *_d, hslot_t *_s, int n)
	Initialize cache slot structure.
void	slot_add (hslot_t *_s, struct urecord *_r)
	Add an element to an slot's linked list.
void	slot_rem (hslot_t *_s, struct urecord *_r)
	Remove an element from slot linked list.
void	ul_destroy_locks (void)
	Destroy all locks on the list.
int	ul_init_locks (void)
	Initialize locks for the hash table.
void	ul_lock_idx (int idx)
	Lock a lock with a certain index.
void	ul_release_idx (int idx)
	Release a lock with a certain index.
void	ul_unlock_locks (void)
	Unlock all locks on the list.
Variables
gen_lock_set_t *	ul_locks = 0
int	ul_locks_no = 4

---

Detailed Description

USRLOC - Hash table collision slot related functions

• Module: Usrloc :: User location module.

Definition in file hslot.c.

---

Function Documentation

void deinit_slot

(

hslot_t *

_s

)

Deinitialize given slot structure.

Parameters:

_s

hash slot

Definition at line 148 of file hslot.c.

References hslot::d, hslot::first, free_urecord(), hslot::last, hslot::n, and urecord::next.

Referenced by free_udomain().

void init_slot	(	struct udomain *	_d,
		hslot_t *	_s,
		int	n
	)

Initialize cache slot structure.

Initialize slot structure.

Parameters:

	_d	domain for the hash slot
	_s	hash slot
	n	used to get the slot number (modulo number or locks)

Definition at line 129 of file hslot.c.

References hslot::d, hslot::first, hslot::last, hslot::lockidx, hslot::n, ul_locks, and ul_locks_no.

Referenced by new_udomain().

void slot_add	(	hslot_t *	_s,
		struct urecord *	_r
	)

Add an element to an slot's linked list.

Add an element to slot linked list.

Parameters:

	_s	hash slot
	_r	added record

Definition at line 170 of file hslot.c.

References hslot::first, hslot::last, hslot::n, urecord::next, urecord::prev, and urecord::slot.

Referenced by mem_insert_urecord().

void slot_rem	(	hslot_t *	_s,
		struct urecord *	_r
	)

Remove an element from slot linked list.

Parameters:

	_s	hash slot
	_r	removed record

Definition at line 189 of file hslot.c.

References hslot::first, hslot::last, hslot::n, urecord::next, urecord::prev, and urecord::slot.

Referenced by mem_delete_urecord().

void ul_destroy_locks

(

void

)

Destroy all locks on the list.

Definition at line 94 of file hslot.c.

References ul_locks.

int ul_init_locks

(

void

)

Initialize locks for the hash table.

Returns:

0 on success, -1 on failure

Definition at line 44 of file hslot.c.

References LM_ERR, LM_INFO, ul_locks, and ul_locks_no.

Referenced by mod_init().

void ul_lock_idx

(

int

idx

)

Lock a lock with a certain index.

Parameters:

idx

lock index

Definition at line 107 of file hslot.c.

References ul_locks.

Referenced by lock_udomain(), and lock_ulslot().

void ul_release_idx

(

int

idx

)

Release a lock with a certain index.

Parameters:

idx

lock index

Definition at line 117 of file hslot.c.

References ul_locks.

Referenced by ul_unlock_locks(), unlock_udomain(), and unlock_ulslot().

void ul_unlock_locks

(

void

)

Unlock all locks on the list.

Destroy all locks on the list.

Definition at line 74 of file hslot.c.

References ul_locks, ul_locks_no, and ul_release_idx().

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Variable Documentation

gen_lock_set_t* ul_locks = 0

global list of locks

Definition at line 37 of file hslot.c.

Referenced by init_slot(), ul_destroy_locks(), ul_init_locks(), ul_lock_idx(), ul_release_idx(), and ul_unlock_locks().

int ul_locks_no = 4

number of locks

Definition at line 35 of file hslot.c.

Referenced by init_slot(), mod_init(), ul_init_locks(), and ul_unlock_locks().