Stobcache

Functions
	M0_TL_DESCR_DEFINE (stob_cache, "cached stobs", static, struct m0_stob, so_cache_linkage, so_cache_magic, M0_STOB_CACHE_MAGIC, M0_STOB_CACHE_HEAD_MAGIC)
	M0_TL_DEFINE (stob_cache, static, struct m0_stob)
M0_INTERNAL int	m0_stob_cache_init (struct m0_stob_cache *cache, uint64_t idle_size, m0_stob_cache_eviction_cb_t eviction_cb)
M0_INTERNAL void	m0_stob_cache_fini (struct m0_stob_cache *cache)
M0_INTERNAL bool	m0_stob_cache__invariant (const struct m0_stob_cache *cache)
static void	stob_cache_evict (struct m0_stob_cache *cache, struct m0_stob *stob)
static void	stob_cache_idle_del (struct m0_stob_cache *cache, struct m0_stob *stob)
static void	stob_cache_idle_moveto (struct m0_stob_cache *cache, struct m0_stob *stob)
M0_INTERNAL void	m0_stob_cache_add (struct m0_stob_cache *cache, struct m0_stob *stob)
M0_INTERNAL void	m0_stob_cache_idle (struct m0_stob_cache *cache, struct m0_stob *stob)
M0_INTERNAL struct m0_stob *	m0_stob_cache_lookup (struct m0_stob_cache *cache, const struct m0_fid *stob_fid)
M0_INTERNAL void	m0_stob_cache_purge (struct m0_stob_cache *cache, int nr)
M0_INTERNAL void	m0_stob_cache_lock (struct m0_stob_cache *cache)
M0_INTERNAL void	m0_stob_cache_unlock (struct m0_stob_cache *cache)
M0_INTERNAL bool	m0_stob_cache_is_locked (const struct m0_stob_cache *cache)
M0_INTERNAL bool	m0_stob_cache_is_not_locked (const struct m0_stob_cache *cache)
M0_INTERNAL void	m0_stob_cache__print (struct m0_stob_cache *cache)

Detailed Description

Function Documentation

m0_stob_cache__invariant()

M0_INTERNAL bool m0_stob_cache__invariant

(

const struct m0_stob_cache *

cache

)

Stob cache invariant.

Precondition

m0_stob_cache_is_locked(cache)

Postcondition

m0_stob_cache_is_locked(cache)

Definition at line 81 of file cache.c.

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m0_stob_cache__print()

M0_INTERNAL void m0_stob_cache__print

(

struct m0_stob_cache *

cache

)

Definition at line 205 of file cache.c.

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m0_stob_cache_add()

M0_INTERNAL void m0_stob_cache_add	(	struct m0_stob_cache *	cache,
		struct m0_stob *	stob
	)

Adds stob to the stob cache. Stob should be deleted from the stob cache using m0_stob_cache_idle().

Precondition

m0_stob_cache_is_locked(cache)

Postcondition

m0_stob_cache_is_locked(cache)

Definition at line 120 of file cache.c.

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m0_stob_cache_fini()

M0_INTERNAL void m0_stob_cache_fini

(

struct m0_stob_cache *

cache

)

Definition at line 61 of file cache.c.

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m0_stob_cache_idle()

M0_INTERNAL void m0_stob_cache_idle	(	struct m0_stob_cache *	cache,
		struct m0_stob *	stob
	)

Deletes item from the stob cache.

Precondition

m0_stob_cache_is_locked(cache)

Postcondition

m0_stob_cache_is_locked(cache)

Definition at line 129 of file cache.c.

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m0_stob_cache_init()

M0_INTERNAL int m0_stob_cache_init	(	struct m0_stob_cache *	cache,
		uint64_t	idle_size,
		m0_stob_cache_eviction_cb_t	eviction_cb
	)

Initialises stob cache.

Parameters

cache	stob cache
idle_size	idle list maximum size

Definition at line 42 of file cache.c.

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m0_stob_cache_is_locked()

M0_INTERNAL bool m0_stob_cache_is_locked

(

const struct m0_stob_cache *

cache

)

Definition at line 195 of file cache.c.

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m0_stob_cache_is_not_locked()

M0_INTERNAL bool m0_stob_cache_is_not_locked

(

const struct m0_stob_cache *

cache

)

Definition at line 200 of file cache.c.

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m0_stob_cache_lock()

M0_INTERNAL void m0_stob_cache_lock

(

struct m0_stob_cache *

cache

)

Definition at line 185 of file cache.c.

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m0_stob_cache_lookup()

M0_INTERNAL struct m0_stob* m0_stob_cache_lookup	(	struct m0_stob_cache *	cache,
		const struct m0_fid *	stob_fid
	)

Finds item in the stob cache. Stob found should be deleted from the stob cache using m0_stob_cache_idle().

Precondition

m0_stob_cache_is_locked(cache)

Postcondition

m0_stob_cache_is_locked(cache)

Definition at line 137 of file cache.c.

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m0_stob_cache_purge()

M0_INTERNAL void m0_stob_cache_purge	(	struct m0_stob_cache *	cache,
		int	nr
	)

Purges at most nr items from the idle stob cache.

Precondition

m0_stob_cache_is_not_locked(cache)

Postcondition

m0_stob_cache_is_not_locked(cache)

Definition at line 165 of file cache.c.

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m0_stob_cache_unlock()

M0_INTERNAL void m0_stob_cache_unlock

(

struct m0_stob_cache *

cache

)

Definition at line 190 of file cache.c.

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M0_TL_DEFINE()

M0_TL_DEFINE	(	stob_cache	,
		static	,
		struct m0_stob
	)

M0_TL_DESCR_DEFINE()

M0_TL_DESCR_DEFINE	(	stob_cache	,
		"cached stobs"	,
		static	,
		struct m0_stob	,
		so_cache_linkage	,
		so_cache_magic	,
		M0_STOB_CACHE_MAGIC	,
		M0_STOB_CACHE_HEAD_MAGIC
	)

stob_cache_evict()

static void stob_cache_evict ( struct m0_stob_cache *  cache, struct m0_stob *  stob  )

static

Definition at line 90 of file cache.c.

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stob_cache_idle_del()

static void stob_cache_idle_del ( struct m0_stob_cache *  cache, struct m0_stob *  stob  )

static

Definition at line 97 of file cache.c.

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stob_cache_idle_moveto()

static void stob_cache_idle_moveto ( struct m0_stob_cache *  cache, struct m0_stob *  stob  )

static

Definition at line 106 of file cache.c.

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