1 /* SPDX-License-Identifier: Apache-2.0
2 * Copyright(c) 2022 Cisco Systems, Inc.
6 #include <vlib/stats/stats.h>
8 vlib_stats_main_t vlib_stats_main;
11 vlib_stats_segment_lock (void)
13 vlib_main_t *vm = vlib_get_main ();
14 vlib_stats_segment_t *sm = vlib_stats_get_segment ();
16 /* already locked by us */
17 if (sm->shared_header->in_progress &&
18 vm->thread_index == sm->locking_thread_index)
21 ASSERT (sm->locking_thread_index == ~0);
22 ASSERT (sm->shared_header->in_progress == 0);
23 ASSERT (sm->n_locks == 0);
25 clib_spinlock_lock (sm->stat_segment_lockp);
27 sm->shared_header->in_progress = 1;
28 sm->locking_thread_index = vm->thread_index;
34 vlib_stats_segment_unlock (void)
36 vlib_main_t *vm = vlib_get_main ();
37 vlib_stats_segment_t *sm = vlib_stats_get_segment ();
39 ASSERT (sm->shared_header->in_progress == 1);
40 ASSERT (sm->locking_thread_index == vm->thread_index);
41 ASSERT (sm->n_locks > 0);
48 sm->shared_header->epoch++;
49 __atomic_store_n (&sm->shared_header->in_progress, 0, __ATOMIC_RELEASE);
50 sm->locking_thread_index = ~0;
51 clib_spinlock_unlock (sm->stat_segment_lockp);
55 * Change heap to the stats shared memory segment
58 vlib_stats_set_heap ()
60 vlib_stats_segment_t *sm = vlib_stats_get_segment ();
62 ASSERT (sm && sm->shared_header);
63 return clib_mem_set_heap (sm->heap);
67 vlib_stats_find_entry_index (char *fmt, ...)
73 name = va_format (0, fmt, &va);
77 vlib_stats_segment_t *sm = vlib_stats_get_segment ();
78 hash_pair_t *hp = hash_get_pair (sm->directory_vector_by_name, name);
80 return hp ? hp->value[0] : STAT_SEGMENT_INDEX_INVALID;
84 hash_set_str_key_alloc (uword **h, const char *key, uword v)
86 int size = strlen (key) + 1;
87 void *copy = clib_mem_alloc (size);
88 clib_memcpy_fast (copy, key, size);
89 hash_set_mem (*h, copy, v);
93 hash_unset_str_key_free (uword **h, const char *key)
95 hash_pair_t *hp = hash_get_pair_mem (*h, key);
98 void *_k = uword_to_pointer (hp->key, void *);
99 hash_unset_mem (*h, _k);
105 vlib_stats_create_counter (vlib_stats_entry_t *e)
107 vlib_stats_segment_t *sm = vlib_stats_get_segment ();
110 if (sm->dir_vector_first_free_elt != CLIB_U32_MAX)
112 index = sm->dir_vector_first_free_elt;
113 sm->dir_vector_first_free_elt = sm->directory_vector[index].index;
117 index = vec_len (sm->directory_vector);
118 vec_validate (sm->directory_vector, index);
121 sm->directory_vector[index] = *e;
123 hash_set_str_key_alloc (&sm->directory_vector_by_name, e->name, index);
129 vlib_stats_remove_entry (u32 entry_index)
131 vlib_stats_segment_t *sm = vlib_stats_get_segment ();
132 vlib_stats_entry_t *e = vlib_stats_get_entry (sm, entry_index);
137 if (entry_index >= vec_len (sm->directory_vector))
140 vlib_stats_segment_lock ();
144 case STAT_DIR_TYPE_NAME_VECTOR:
145 for (i = 0; i < vec_len (e->string_vector); i++)
146 vec_free (e->string_vector[i]);
147 vec_free (e->string_vector);
150 case STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE:
153 for (i = 0; i < vec_len (c); i++)
158 case STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED:
161 for (i = 0; i < vec_len (vc); i++)
166 case STAT_DIR_TYPE_SCALAR_INDEX:
167 case STAT_DIR_TYPE_SYMLINK:
173 vlib_stats_segment_unlock ();
175 hash_unset_str_key_free (&sm->directory_vector_by_name, e->name);
177 memset (e, 0, sizeof (*e));
178 e->type = STAT_DIR_TYPE_EMPTY;
180 e->value = sm->dir_vector_first_free_elt;
181 sm->dir_vector_first_free_elt = entry_index;
185 vlib_stats_set_entry_name (vlib_stats_entry_t *e, char *s)
187 u32 i, len = VLIB_STATS_MAX_NAME_SZ - 1;
189 for (i = 0; i < len; i++)
195 ASSERT (i < VLIB_STATS_MAX_NAME_SZ - 1);
200 vlib_stats_new_entry_internal (stat_directory_type_t t, u8 *name)
202 vlib_stats_segment_t *sm = vlib_stats_get_segment ();
203 vlib_stats_shared_header_t *shared_header = sm->shared_header;
204 vlib_stats_entry_t e = { .type = t };
206 ASSERT (shared_header);
208 u32 vector_index = vlib_stats_find_entry_index ("%v", name);
209 if (vector_index != STAT_SEGMENT_INDEX_INVALID) /* Already registered */
216 vlib_stats_set_entry_name (&e, (char *) name);
218 vlib_stats_segment_lock ();
219 vector_index = vlib_stats_create_counter (&e);
221 shared_header->directory_vector = sm->directory_vector;
223 vlib_stats_segment_unlock ();
231 vlib_stats_add_gauge (char *fmt, ...)
237 name = va_format (0, fmt, &va);
239 return vlib_stats_new_entry_internal (STAT_DIR_TYPE_SCALAR_INDEX, name);
243 vlib_stats_set_gauge (u32 index, u64 value)
245 vlib_stats_segment_t *sm = vlib_stats_get_segment ();
247 ASSERT (index < vec_len (sm->directory_vector));
248 sm->directory_vector[index].value = value;
252 vlib_stats_add_timestamp (char *fmt, ...)
258 name = va_format (0, fmt, &va);
260 return vlib_stats_new_entry_internal (STAT_DIR_TYPE_SCALAR_INDEX, name);
264 vlib_stats_set_timestamp (u32 entry_index, f64 value)
266 vlib_stats_segment_t *sm = vlib_stats_get_segment ();
268 ASSERT (entry_index < vec_len (sm->directory_vector));
269 sm->directory_vector[entry_index].value = value;
273 vlib_stats_add_string_vector (char *fmt, ...)
279 name = va_format (0, fmt, &va);
281 return vlib_stats_new_entry_internal (STAT_DIR_TYPE_NAME_VECTOR, name);
285 vlib_stats_set_string_vector (u32 entry_index, u32 vector_index, char *fmt,
288 vlib_stats_segment_t *sm = vlib_stats_get_segment ();
289 vlib_stats_entry_t *e = vlib_stats_get_entry (sm, entry_index);
293 oldheap = clib_mem_set_heap (sm->heap);
294 vlib_stats_segment_lock ();
296 vec_validate (e->string_vector, vector_index);
297 vec_reset_length (e->string_vector[vector_index]);
300 e->string_vector[vector_index] =
301 va_format (e->string_vector[vector_index], fmt, &va);
304 vlib_stats_segment_unlock ();
305 clib_mem_set_heap (oldheap);
309 vlib_stats_add_counter_vector (char *fmt, ...)
315 name = va_format (0, fmt, &va);
317 return vlib_stats_new_entry_internal (STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE,
322 vlib_stats_add_counter_pair_vector (char *fmt, ...)
328 name = va_format (0, fmt, &va);
330 return vlib_stats_new_entry_internal (STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED,
335 vlib_stats_validate_will_expand_internal (u32 entry_index, va_list *va)
337 vlib_stats_segment_t *sm = vlib_stats_get_segment ();
338 vlib_stats_entry_t *e = vlib_stats_get_entry (sm, entry_index);
342 oldheap = clib_mem_set_heap (sm->heap);
343 if (e->type == STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE)
345 u32 idx0 = va_arg (*va, u32);
346 u32 idx1 = va_arg (*va, u32);
347 u64 **data = e->data;
349 if (idx0 >= vec_len (data))
352 for (u32 i = 0; i <= idx0; i++)
353 if (idx1 >= vec_max_len (data[i]))
356 else if (e->type == STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED)
358 u32 idx0 = va_arg (*va, u32);
359 u32 idx1 = va_arg (*va, u32);
360 vlib_counter_t **data = e->data;
364 if (idx0 >= vec_len (data))
367 for (u32 i = 0; i <= idx0; i++)
368 if (idx1 >= vec_max_len (data[i]))
376 clib_mem_set_heap (oldheap);
381 vlib_stats_validate_will_expand (u32 entry_index, ...)
386 va_start (va, entry_index);
387 rv = vlib_stats_validate_will_expand_internal (entry_index, &va);
393 vlib_stats_validate (u32 entry_index, ...)
395 vlib_stats_segment_t *sm = vlib_stats_get_segment ();
396 vlib_stats_entry_t *e = vlib_stats_get_entry (sm, entry_index);
401 va_start (va, entry_index);
402 will_expand = vlib_stats_validate_will_expand_internal (entry_index, &va);
406 vlib_stats_segment_lock ();
408 oldheap = clib_mem_set_heap (sm->heap);
410 va_start (va, entry_index);
412 if (e->type == STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE)
414 u32 idx0 = va_arg (va, u32);
415 u32 idx1 = va_arg (va, u32);
416 u64 **data = e->data;
418 vec_validate_aligned (data, idx0, CLIB_CACHE_LINE_BYTES);
420 for (u32 i = 0; i <= idx0; i++)
421 vec_validate_aligned (data[i], idx1, CLIB_CACHE_LINE_BYTES);
424 else if (e->type == STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED)
426 u32 idx0 = va_arg (va, u32);
427 u32 idx1 = va_arg (va, u32);
428 vlib_counter_t **data = e->data;
430 vec_validate_aligned (data, idx0, CLIB_CACHE_LINE_BYTES);
432 for (u32 i = 0; i <= idx0; i++)
433 vec_validate_aligned (data[i], idx1, CLIB_CACHE_LINE_BYTES);
441 clib_mem_set_heap (oldheap);
444 vlib_stats_segment_unlock ();
448 vlib_stats_add_symlink (u32 entry_index, u32 vector_index, char *fmt, ...)
450 vlib_stats_segment_t *sm = vlib_stats_get_segment ();
451 vlib_stats_shared_header_t *shared_header = sm->shared_header;
452 vlib_stats_entry_t e;
456 ASSERT (shared_header);
457 ASSERT (entry_index < vec_len (sm->directory_vector));
460 name = va_format (0, fmt, &va);
463 if (vlib_stats_find_entry_index ("%v", name) == STAT_SEGMENT_INDEX_INVALID)
466 vlib_stats_set_entry_name (&e, (char *) name);
467 e.type = STAT_DIR_TYPE_SYMLINK;
468 e.index1 = entry_index;
469 e.index2 = vector_index;
470 vector_index = vlib_stats_create_counter (&e);
472 /* Warn clients to refresh any pointers they might be holding */
473 shared_header->directory_vector = sm->directory_vector;
483 vlib_stats_rename_symlink (u64 entry_index, char *fmt, ...)
485 vlib_stats_segment_t *sm = vlib_stats_get_segment ();
486 vlib_stats_entry_t *e = vlib_stats_get_entry (sm, entry_index);
490 hash_unset_str_key_free (&sm->directory_vector_by_name, e->name);
493 new_name = va_format (0, fmt, &va);
496 vec_add1 (new_name, 0);
497 vlib_stats_set_entry_name (e, (char *) new_name);
498 hash_set_str_key_alloc (&sm->directory_vector_by_name, e->name, entry_index);
503 vlib_stats_get_segment_update_rate (void)
505 vlib_stats_segment_t *sm = vlib_stats_get_segment ();
506 return sm->update_interval;
510 vlib_stats_register_collector_fn (vlib_stats_collector_reg_t *reg)
512 vlib_stats_segment_t *sm = vlib_stats_get_segment ();
513 vlib_stats_collector_t *c;
515 ASSERT (reg->entry_index != ~0);
517 pool_get_zero (sm->collectors, c);
518 c->fn = reg->collect_fn;
519 c->entry_index = reg->entry_index;
520 c->vector_index = reg->vector_index;
521 c->private_data = reg->private_data;