/** @cond DOCUMENTATION_IS_IN_BIHASH_DOC_H */
+#ifndef MAP_HUGE_SHIFT
+#define MAP_HUGE_SHIFT 26
+#endif
+
static inline void *BV (alloc_aligned) (BVT (clib_bihash) * h, uword nbytes)
{
uword rv;
rv = alloc_arena_next (h);
alloc_arena_next (h) += nbytes;
- if (rv >= (alloc_arena (h) + alloc_arena_size (h)))
+ if (alloc_arena_next (h) > alloc_arena_size (h))
os_out_of_memory ();
+ if (alloc_arena_next (h) > alloc_arena_mapped (h))
+ {
+ void *base, *rv;
+ uword alloc = alloc_arena_next (h) - alloc_arena_mapped (h);
+ int mmap_flags = MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS;
+ int mmap_flags_huge = (mmap_flags | MAP_HUGETLB |
+ BIHASH_LOG2_HUGEPAGE_SIZE << MAP_HUGE_SHIFT);
+
+ /* new allocation is 25% of existing one */
+ if (alloc_arena_mapped (h) >> 2 > alloc)
+ alloc = alloc_arena_mapped (h) >> 2;
+
+ /* round allocation to page size */
+ alloc = round_pow2 (alloc, 1 << BIHASH_LOG2_HUGEPAGE_SIZE);
+
+ base = (void *) (uword) (alloc_arena (h) + alloc_arena_mapped (h));
+
+ rv = mmap (base, alloc, PROT_READ | PROT_WRITE, mmap_flags_huge, -1, 0);
+
+ /* fallback - maybe we are still able to allocate normal pages */
+ if (rv == MAP_FAILED)
+ rv = mmap (base, alloc, PROT_READ | PROT_WRITE, mmap_flags, -1, 0);
+
+ if (rv == MAP_FAILED)
+ os_out_of_memory ();
+
+ alloc_arena_mapped (h) += alloc;
+ }
+
return (void *) (uword) (rv + alloc_arena (h));
}
-
-void BV (clib_bihash_init)
- (BVT (clib_bihash) * h, char *name, u32 nbuckets, uword memory_size)
+static void BV (clib_bihash_instantiate) (BVT (clib_bihash) * h)
{
uword bucket_size;
- nbuckets = 1 << (max_log2 (nbuckets));
+ alloc_arena (h) = clib_mem_vm_reserve (0, h->memory_size,
+ BIHASH_LOG2_HUGEPAGE_SIZE);
+ if (alloc_arena (h) == ~0)
+ os_out_of_memory ();
+ alloc_arena_next (h) = 0;
+ alloc_arena_size (h) = h->memory_size;
+ alloc_arena_mapped (h) = 0;
- h->name = (u8 *) name;
- h->nbuckets = nbuckets;
- h->log2_nbuckets = max_log2 (nbuckets);
+ bucket_size = h->nbuckets * sizeof (h->buckets[0]);
+
+ if (BIHASH_KVP_AT_BUCKET_LEVEL)
+ bucket_size +=
+ h->nbuckets * BIHASH_KVP_PER_PAGE * sizeof (BVT (clib_bihash_kv));
+
+ h->buckets = BV (alloc_aligned) (h, bucket_size);
+
+ if (BIHASH_KVP_AT_BUCKET_LEVEL)
+ {
+ int i;
+ BVT (clib_bihash_bucket) * b;
+
+ b = h->buckets;
+
+ for (i = 0; i < h->nbuckets; i++)
+ {
+ b->offset = BV (clib_bihash_get_offset) (h, (void *) (b + 1));
+ b->refcnt = 1;
+ /* Mark all elements free */
+ clib_memset ((b + 1), 0xff,
+ BIHASH_KVP_PER_PAGE * sizeof (BVT (clib_bihash_kv)));
+
+ /* Compute next bucket start address */
+ b = (void *) (((uword) b) + sizeof (*b) +
+ (BIHASH_KVP_PER_PAGE *
+ sizeof (BVT (clib_bihash_kv))));
+ }
+ }
+ CLIB_MEMORY_STORE_BARRIER ();
+ h->instantiated = 1;
+}
+
+void BV (clib_bihash_init2) (BVT (clib_bihash_init2_args) * a)
+{
+ int i;
+ void *oldheap;
+ BVT (clib_bihash) * h = a->h;
+
+ a->nbuckets = 1 << (max_log2 (a->nbuckets));
+
+ h->name = (u8 *) a->name;
+ h->nbuckets = a->nbuckets;
+ h->log2_nbuckets = max_log2 (a->nbuckets);
+ h->memory_size = a->memory_size;
+ h->instantiated = 0;
+ h->fmt_fn = a->fmt_fn;
+
+ alloc_arena (h) = 0;
/*
* Make sure the requested size is rational. The max table
* If someone starts complaining that's not enough, we can shift
* the offset by CLIB_LOG2_CACHE_LINE_BYTES...
*/
- ASSERT (memory_size < (1ULL << BIHASH_BUCKET_OFFSET_BITS));
+ ASSERT (h->memory_size < (1ULL << BIHASH_BUCKET_OFFSET_BITS));
- alloc_arena (h) = (uword) clib_mem_vm_alloc (memory_size);
- alloc_arena_next (h) = 0;
- alloc_arena_size (h) = memory_size;
+ /* Add this hash table to the list */
+ if (a->dont_add_to_all_bihash_list == 0)
+ {
+ for (i = 0; i < vec_len (clib_all_bihashes); i++)
+ if (clib_all_bihashes[i] == h)
+ goto do_lock;
+ oldheap = clib_all_bihash_set_heap ();
+ vec_add1 (clib_all_bihashes, (void *) h);
+ clib_mem_set_heap (oldheap);
+ }
- bucket_size = nbuckets * sizeof (h->buckets[0]);
- h->buckets = BV (alloc_aligned) (h, bucket_size);
+do_lock:
+ if (h->alloc_lock)
+ clib_mem_free ((void *) h->alloc_lock);
- h->alloc_lock = BV (alloc_aligned) (h, CLIB_CACHE_LINE_BYTES);
+ /*
+ * Set up the lock now, so we can use it to make the first add
+ * thread-safe
+ */
+ h->alloc_lock = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES,
+ CLIB_CACHE_LINE_BYTES);
h->alloc_lock[0] = 0;
- h->fmt_fn = NULL;
+#if BIHASH_LAZY_INSTANTIATE
+ if (a->instantiate_immediately)
+#endif
+ BV (clib_bihash_instantiate) (h);
+}
+
+void BV (clib_bihash_init)
+ (BVT (clib_bihash) * h, char *name, u32 nbuckets, uword memory_size)
+{
+ BVT (clib_bihash_init2_args) _a, *a = &_a;
+
+ memset (a, 0, sizeof (*a));
+
+ a->h = h;
+ a->name = name;
+ a->nbuckets = nbuckets;
+ a->memory_size = memory_size;
+
+ BV (clib_bihash_init2) (a);
}
#if BIHASH_32_64_SVM
sizeof (vec_header_t) +
BIHASH_FREELIST_LENGTH * sizeof (u64));
freelist_vh->len = BIHASH_FREELIST_LENGTH;
- freelist_vh->dlmalloc_header_offset = 0xDEADBEEF;
h->sh->freelists_as_u64 =
(u64) BV (clib_bihash_get_offset) (h, freelist_vh->vector_data);
h->freelists = (void *) (freelist_vh->vector_data);
h->fmt_fn = NULL;
+ h->instantiated = 1;
}
void BV (clib_bihash_slave_init_svm)
void BV (clib_bihash_free) (BVT (clib_bihash) * h)
{
+ int i;
+
+ if (PREDICT_FALSE (h->instantiated == 0))
+ goto never_initialized;
+
+ h->instantiated = 0;
vec_free (h->working_copies);
+ vec_free (h->working_copy_lengths);
#if BIHASH_32_64_SVM == 0
vec_free (h->freelists);
#else
(void) close (h->memfd);
#endif
clib_mem_vm_free ((void *) (uword) (alloc_arena (h)), alloc_arena_size (h));
- memset (h, 0, sizeof (*h));
+never_initialized:
+ clib_memset (h, 0, sizeof (*h));
+ for (i = 0; i < vec_len (clib_all_bihashes); i++)
+ {
+ if ((void *) h == clib_all_bihashes[i])
+ {
+ vec_delete (clib_all_bihashes, 1, i);
+ return;
+ }
+ }
+ clib_warning ("Couldn't find hash table %llx on clib_all_bihashes...",
+ (u64) (uword) h);
}
static
* if we replace (1<<log2_pages) with vec_len(rv).
* No clue.
*/
- memset (rv, 0xff, sizeof (*rv) * (1 << log2_pages));
+ clib_memset (rv, 0xff, sizeof (*rv) * (1 << log2_pages));
return rv;
}
ASSERT (vec_len (h->freelists) > log2_pages);
if (CLIB_DEBUG > 0)
- memset (v, 0xFE, sizeof (*v) * (1 << log2_pages));
+ clib_memset (v, 0xFE, sizeof (*v) * (1 << log2_pages));
v->next_free_as_u64 = (u64) h->freelists[log2_pages];
h->freelists[log2_pages] = (u64) BV (clib_bihash_get_offset) (h, v);
(h, sizeof (working_copy[0]) * (1 << b->log2_pages));
h->working_copy_lengths[thread_index] = b->log2_pages;
h->working_copies[thread_index] = working_copy;
+
+ BV (clib_bihash_increment_stat) (h, BIHASH_STAT_working_copy_lost,
+ 1ULL << b->log2_pages);
}
v = BV (clib_bihash_get_value) (h, b->offset);
- clib_memcpy (working_copy, v, sizeof (*v) * (1 << b->log2_pages));
+ clib_memcpy_fast (working_copy, v, sizeof (*v) * (1 << b->log2_pages));
working_bucket.as_u64 = b->as_u64;
working_bucket.offset = BV (clib_bihash_get_offset) (h, working_copy);
- CLIB_MEMORY_BARRIER ();
+ CLIB_MEMORY_STORE_BARRIER ();
b->as_u64 = working_bucket.as_u64;
h->working_copies[thread_index] = working_copy;
}
/* rehash the item onto its new home-page */
new_hash = BV (clib_bihash_hash) (&(old_values->kvp[i]));
- new_hash >>= h->log2_nbuckets;
- new_hash &= (1 << new_log2_pages) - 1;
+ new_hash = extract_bits (new_hash, h->log2_nbuckets, new_log2_pages);
new_v = &new_values[new_hash];
/* Across the new home-page */
/* Empty slot */
if (BV (clib_bihash_is_free) (&(new_v->kvp[j])))
{
- clib_memcpy (&(new_v->kvp[j]), &(old_values->kvp[i]),
- sizeof (new_v->kvp[j]));
+ clib_memcpy_fast (&(new_v->kvp[j]), &(old_values->kvp[i]),
+ sizeof (new_v->kvp[j]));
goto doublebreak;
}
}
if (BV (clib_bihash_is_free) (&(new_values->kvp[j])))
{
/* Copy the old value and move along */
- clib_memcpy (&(new_values->kvp[j]), &(old_values->kvp[i]),
- sizeof (new_values->kvp[j]));
+ clib_memcpy_fast (&(new_values->kvp[j]), &(old_values->kvp[i]),
+ sizeof (new_values->kvp[j]));
j++;
goto doublebreak;
}
return new_values;
}
-static inline int BV (clib_bihash_add_del_inline)
- (BVT (clib_bihash) * h, BVT (clib_bihash_kv) * add_v, int is_add,
+static_always_inline int BV (clib_bihash_add_del_inline_with_hash)
+ (BVT (clib_bihash) * h, BVT (clib_bihash_kv) * add_v, u64 hash, int is_add,
int (*is_stale_cb) (BVT (clib_bihash_kv) *, void *), void *arg)
{
- u32 bucket_index;
BVT (clib_bihash_bucket) * b, tmp_b;
BVT (clib_bihash_value) * v, *new_v, *save_new_v, *working_copy;
int i, limit;
- u64 hash, new_hash;
+ u64 new_hash;
u32 new_log2_pages, old_log2_pages;
u32 thread_index = os_get_thread_index ();
int mark_bucket_linear;
int resplit_once;
- hash = BV (clib_bihash_hash) (add_v);
+ /* *INDENT-OFF* */
+ static const BVT (clib_bihash_bucket) mask = {
+ .linear_search = 1,
+ .log2_pages = -1
+ };
+ /* *INDENT-ON* */
- bucket_index = hash & (h->nbuckets - 1);
- b = &h->buckets[bucket_index];
+#if BIHASH_LAZY_INSTANTIATE
+ /*
+ * Create the table (is_add=1,2), or flunk the request now (is_add=0)
+ * Use the alloc_lock to protect the instantiate operation.
+ */
+ if (PREDICT_FALSE (h->instantiated == 0))
+ {
+ if (is_add == 0)
+ return (-1);
+
+ BV (clib_bihash_alloc_lock) (h);
+ if (h->instantiated == 0)
+ BV (clib_bihash_instantiate) (h);
+ BV (clib_bihash_alloc_unlock) (h);
+ }
+#else
+ /* Debug image: make sure the table has been instantiated */
+ ASSERT (h->instantiated != 0);
+#endif
- hash >>= h->log2_nbuckets;
+ b = BV (clib_bihash_get_bucket) (h, hash);
BV (clib_bihash_lock_bucket) (b);
/* First elt in the bucket? */
- if (BV (clib_bihash_bucket_is_empty) (b))
+ if (BIHASH_KVP_AT_BUCKET_LEVEL == 0 && BV (clib_bihash_bucket_is_empty) (b))
{
if (is_add == 0)
{
tmp_b.as_u64 = 0; /* clears bucket lock */
tmp_b.offset = BV (clib_bihash_get_offset) (h, v);
tmp_b.refcnt = 1;
- CLIB_MEMORY_BARRIER ();
+ CLIB_MEMORY_STORE_BARRIER ();
+
+ b->as_u64 = tmp_b.as_u64; /* unlocks the bucket */
+ BV (clib_bihash_increment_stat) (h, BIHASH_STAT_alloc_add, 1);
- b->as_u64 = tmp_b.as_u64;
- BV (clib_bihash_unlock_bucket) (b);
return (0);
}
limit = BIHASH_KVP_PER_PAGE;
v = BV (clib_bihash_get_value) (h, b->offset);
- v += (b->linear_search == 0) ? hash & ((1 << b->log2_pages) - 1) : 0;
- if (b->linear_search)
- limit <<= b->log2_pages;
+ if (PREDICT_FALSE (b->as_u64 & mask.as_u64))
+ {
+ if (PREDICT_FALSE (b->linear_search))
+ limit <<= b->log2_pages;
+ else
+ v += extract_bits (hash, h->log2_nbuckets, b->log2_pages);
+ }
if (is_add)
{
*/
for (i = 0; i < limit; i++)
{
- if (!memcmp (&(v->kvp[i]), &add_v->key, sizeof (add_v->key)))
+ if (BV (clib_bihash_key_compare) (v->kvp[i].key, add_v->key))
{
- CLIB_MEMORY_BARRIER (); /* Add a delay */
- clib_memcpy (&(v->kvp[i]), add_v, sizeof (*add_v));
+ /* Add but do not overwrite? */
+ if (is_add == 2)
+ {
+ BV (clib_bihash_unlock_bucket) (b);
+ return (-2);
+ }
+
+ clib_memcpy_fast (&(v->kvp[i].value),
+ &add_v->value, sizeof (add_v->value));
BV (clib_bihash_unlock_bucket) (b);
+ BV (clib_bihash_increment_stat) (h, BIHASH_STAT_replace, 1);
return (0);
}
}
* Copy the value first, so that if a reader manages
* to match the new key, the value will be right...
*/
- clib_memcpy (&(v->kvp[i].value),
- &add_v->value, sizeof (add_v->value));
- CLIB_MEMORY_BARRIER (); /* Make sure the value has settled */
- clib_memcpy (&(v->kvp[i]), &add_v->key, sizeof (add_v->key));
+ clib_memcpy_fast (&(v->kvp[i].value),
+ &add_v->value, sizeof (add_v->value));
+ CLIB_MEMORY_STORE_BARRIER (); /* Make sure the value has settled */
+ clib_memcpy_fast (&(v->kvp[i]), &add_v->key,
+ sizeof (add_v->key));
b->refcnt++;
ASSERT (b->refcnt > 0);
BV (clib_bihash_unlock_bucket) (b);
+ BV (clib_bihash_increment_stat) (h, BIHASH_STAT_add, 1);
return (0);
}
}
{
if (is_stale_cb (&(v->kvp[i]), arg))
{
- CLIB_MEMORY_BARRIER ();
- clib_memcpy (&(v->kvp[i]), add_v, sizeof (*add_v));
+ clib_memcpy_fast (&(v->kvp[i]), add_v, sizeof (*add_v));
+ CLIB_MEMORY_STORE_BARRIER ();
BV (clib_bihash_unlock_bucket) (b);
+ BV (clib_bihash_increment_stat) (h, BIHASH_STAT_replace, 1);
return (0);
}
}
for (i = 0; i < limit; i++)
{
/* Found the key? Kill it... */
- if (!memcmp (&(v->kvp[i]), &add_v->key, sizeof (add_v->key)))
+ if (BV (clib_bihash_key_compare) (v->kvp[i].key, add_v->key))
{
- memset (&(v->kvp[i]), 0xff, sizeof (*(add_v)));
+ clib_memset_u8 (&(v->kvp[i]), 0xff, sizeof (*(add_v)));
/* Is the bucket empty? */
if (PREDICT_TRUE (b->refcnt > 1))
{
b->refcnt--;
+ /* Switch back to the bucket-level kvp array? */
+ if (BIHASH_KVP_AT_BUCKET_LEVEL && b->refcnt == 1
+ && b->log2_pages > 0)
+ {
+ tmp_b.as_u64 = b->as_u64;
+ b->offset = BV (clib_bihash_get_offset)
+ (h, (void *) (b + 1));
+ b->linear_search = 0;
+ b->log2_pages = 0;
+ /* Clean up the bucket-level kvp array */
+ clib_memset_u8 ((b + 1), 0xff, BIHASH_KVP_PER_PAGE *
+ sizeof (BVT (clib_bihash_kv)));
+ CLIB_MEMORY_STORE_BARRIER ();
+ BV (clib_bihash_unlock_bucket) (b);
+ BV (clib_bihash_increment_stat) (h, BIHASH_STAT_del, 1);
+ goto free_backing_store;
+ }
+
+ CLIB_MEMORY_STORE_BARRIER ();
BV (clib_bihash_unlock_bucket) (b);
+ BV (clib_bihash_increment_stat) (h, BIHASH_STAT_del, 1);
return (0);
}
else /* yes, free it */
{
/* Save old bucket value, need log2_pages to free it */
tmp_b.as_u64 = b->as_u64;
- CLIB_MEMORY_BARRIER ();
/* Kill and unlock the bucket */
b->as_u64 = 0;
+ free_backing_store:
/* And free the backing storage */
BV (clib_bihash_alloc_lock) (h);
/* Note: v currently points into the middle of the bucket */
v = BV (clib_bihash_get_value) (h, tmp_b.offset);
BV (value_free) (h, v, tmp_b.log2_pages);
BV (clib_bihash_alloc_unlock) (h);
+ BV (clib_bihash_increment_stat) (h, BIHASH_STAT_del_free,
+ 1);
return (0);
}
}
old_log2_pages = h->saved_bucket.log2_pages;
new_log2_pages = old_log2_pages + 1;
mark_bucket_linear = 0;
+ BV (clib_bihash_increment_stat) (h, BIHASH_STAT_split_add, 1);
+ BV (clib_bihash_increment_stat) (h, BIHASH_STAT_splits, old_log2_pages);
working_copy = h->working_copies[thread_index];
resplit_once = 0;
+ BV (clib_bihash_increment_stat) (h, BIHASH_STAT_splits, 1);
new_v = BV (split_and_rehash) (h, working_copy, old_log2_pages,
new_log2_pages);
BV (split_and_rehash_linear) (h, working_copy, old_log2_pages,
new_log2_pages);
mark_bucket_linear = 1;
+ BV (clib_bihash_increment_stat) (h, BIHASH_STAT_linear, 1);
}
+ BV (clib_bihash_increment_stat) (h, BIHASH_STAT_resplit, 1);
+ BV (clib_bihash_increment_stat) (h, BIHASH_STAT_splits,
+ old_log2_pages + 1);
}
/* Try to add the new entry */
limit = BIHASH_KVP_PER_PAGE;
if (mark_bucket_linear)
limit <<= new_log2_pages;
- new_hash >>= h->log2_nbuckets;
- new_hash &= (1 << new_log2_pages) - 1;
- new_v += mark_bucket_linear ? 0 : new_hash;
+ else
+ new_v += extract_bits (new_hash, h->log2_nbuckets, new_log2_pages);
for (i = 0; i < limit; i++)
{
if (BV (clib_bihash_is_free) (&(new_v->kvp[i])))
{
- clib_memcpy (&(new_v->kvp[i]), add_v, sizeof (*add_v));
+ clib_memcpy_fast (&(new_v->kvp[i]), add_v, sizeof (*add_v));
goto expand_ok;
}
}
tmp_b.log2_pages = new_log2_pages;
tmp_b.offset = BV (clib_bihash_get_offset) (h, save_new_v);
tmp_b.linear_search = mark_bucket_linear;
- tmp_b.refcnt = h->saved_bucket.refcnt + 1;
+#if BIHASH_KVP_AT_BUCKET_LEVEL
+ /* Compensate for permanent refcount bump at the bucket level */
+ if (new_log2_pages > 0)
+#endif
+ tmp_b.refcnt = h->saved_bucket.refcnt + 1;
ASSERT (tmp_b.refcnt > 0);
tmp_b.lock = 0;
- CLIB_MEMORY_BARRIER ();
+ CLIB_MEMORY_STORE_BARRIER ();
b->as_u64 = tmp_b.as_u64;
+
+#if BIHASH_KVP_AT_BUCKET_LEVEL
+ if (h->saved_bucket.log2_pages > 0)
+ {
+#endif
+
+ /* free the old bucket, except at the bucket level if so configured */
+ v = BV (clib_bihash_get_value) (h, h->saved_bucket.offset);
+ BV (value_free) (h, v, h->saved_bucket.log2_pages);
+
+#if BIHASH_KVP_AT_BUCKET_LEVEL
+ }
+#endif
+
+
BV (clib_bihash_alloc_unlock) (h);
return (0);
}
+static_always_inline int BV (clib_bihash_add_del_inline)
+ (BVT (clib_bihash) * h, BVT (clib_bihash_kv) * add_v, int is_add,
+ int (*is_stale_cb) (BVT (clib_bihash_kv) *, void *), void *arg)
+{
+ u64 hash = BV (clib_bihash_hash) (add_v);
+ return BV (clib_bihash_add_del_inline_with_hash) (h, add_v, hash, is_add,
+ is_stale_cb, arg);
+}
+
int BV (clib_bihash_add_del)
(BVT (clib_bihash) * h, BVT (clib_bihash_kv) * add_v, int is_add)
{
(BVT (clib_bihash) * h,
BVT (clib_bihash_kv) * search_key, BVT (clib_bihash_kv) * valuep)
{
- u64 hash;
- u32 bucket_index;
- BVT (clib_bihash_value) * v;
- BVT (clib_bihash_bucket) * b;
- int i, limit;
-
- ASSERT (valuep);
-
- hash = BV (clib_bihash_hash) (search_key);
-
- bucket_index = hash & (h->nbuckets - 1);
- b = &h->buckets[bucket_index];
-
- if (BV (clib_bihash_bucket_is_empty) (b))
- return -1;
-
- if (PREDICT_FALSE (b->lock))
- {
- volatile BVT (clib_bihash_bucket) * bv = b;
- while (bv->lock)
- CLIB_PAUSE ();
- }
-
- hash >>= h->log2_nbuckets;
-
- v = BV (clib_bihash_get_value) (h, b->offset);
- limit = BIHASH_KVP_PER_PAGE;
- v += (b->linear_search == 0) ? hash & ((1 << b->log2_pages) - 1) : 0;
- if (PREDICT_FALSE (b->linear_search))
- limit <<= b->log2_pages;
-
- for (i = 0; i < limit; i++)
- {
- if (BV (clib_bihash_key_compare) (v->kvp[i].key, search_key->key))
- {
- *valuep = v->kvp[i];
- return 0;
- }
- }
- return -1;
+ return BV (clib_bihash_search_inline_2) (h, search_key, valuep);
}
u8 *BV (format_bihash) (u8 * s, va_list * args)
s = format (s, "Hash table %s\n", h->name ? h->name : (u8 *) "(unnamed)");
+#if BIHASH_LAZY_INSTANTIATE
+ if (PREDICT_FALSE (alloc_arena (h) == 0))
+ return format (s, "[empty, uninitialized]");
+#endif
+
for (i = 0; i < h->nbuckets; i++)
{
- b = &h->buckets[i];
+ b = BV (clib_bihash_get_bucket) (h, i);
if (BV (clib_bihash_bucket_is_empty) (b))
{
if (verbose > 1)
if (verbose)
{
- s = format (s, "[%d]: heap offset %lld, len %d, linear %d\n", i,
- b->offset, (1 << b->log2_pages), b->linear_search);
+ s = format
+ (s, "[%d]: heap offset %lld, len %d, refcnt %d, linear %d\n", i,
+ b->offset, (1 << b->log2_pages), b->refcnt, b->linear_search);
}
v = BV (clib_bihash_get_value) (h, b->offset);
{
s = format (s, " %d: %U\n",
j * BIHASH_KVP_PER_PAGE + k,
- h->fmt_fn, &(v->kvp[k]));
+ h->fmt_fn, &(v->kvp[k]), verbose);
}
else
{
}
void BV (clib_bihash_foreach_key_value_pair)
- (BVT (clib_bihash) * h, void *callback, void *arg)
+ (BVT (clib_bihash) * h,
+ BV (clib_bihash_foreach_key_value_pair_cb) cb, void *arg)
{
int i, j, k;
BVT (clib_bihash_bucket) * b;
BVT (clib_bihash_value) * v;
- void (*fp) (BVT (clib_bihash_kv) *, void *) = callback;
+
+
+#if BIHASH_LAZY_INSTANTIATE
+ if (PREDICT_FALSE (alloc_arena (h) == 0))
+ return;
+#endif
for (i = 0; i < h->nbuckets; i++)
{
- b = &h->buckets[i];
+ b = BV (clib_bihash_get_bucket) (h, i);
if (BV (clib_bihash_bucket_is_empty) (b))
continue;
if (BV (clib_bihash_is_free) (&v->kvp[k]))
continue;
- (*fp) (&v->kvp[k], arg);
+ if (BIHASH_WALK_STOP == cb (&v->kvp[k], arg))
+ return;
/*
* In case the callback deletes the last entry in the bucket...
*/
Code Review / vpp.git / blobdiff