2 * Copyright (c) 2016-2019 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <svm/fifo_segment.h>
19 * Fifo segment free space
21 * Queries the underlying memory manager, dlmalloc, for free space. Since this
22 * ends up walking the internal data structures, it should not be called
25 * @param fs fifo segment
26 * @return number of free bytes
29 fsh_free_space (fifo_segment_header_t * fsh)
31 struct dlmallinfo dlminfo;
33 dlminfo = mspace_mallinfo (fsh->ssvm_sh->heap);
34 return dlminfo.fordblks;
38 fsh_free_bytes_sub (fifo_segment_header_t * fsh, int size)
40 clib_atomic_fetch_sub_rel (&fsh->n_free_bytes, size);
44 fsh_n_free_bytes (fifo_segment_header_t * fsh)
46 uword n_free = clib_atomic_load_relax_n (&fsh->n_free_bytes);
47 return n_free > fsh->n_reserved_bytes ? n_free - fsh->n_reserved_bytes : 0;
51 fsh_update_free_bytes (fifo_segment_header_t * fsh)
53 clib_atomic_store_rel_n (&fsh->n_free_bytes, fsh_free_space (fsh));
57 fsh_check_mem (fifo_segment_header_t * fsh)
61 if (fsh->flags & FIFO_SEGMENT_F_MEM_LIMIT)
64 thresh = clib_max (0.01 * fsh->ssvm_sh->ssvm_size,
65 2 * fsh->n_reserved_bytes);
66 if (fsh->n_free_bytes > thresh)
69 fsh->flags |= FIFO_SEGMENT_F_MEM_LIMIT;
70 fsh_update_free_bytes (fsh);
73 static inline fifo_segment_slice_t *
74 fsh_slice_get (fifo_segment_header_t * fsh, u32 slice_index)
76 return &fsh->slices[slice_index];
80 fsh_active_fifos_update (fifo_segment_header_t * fsh, int inc)
82 clib_atomic_fetch_add_rel (&fsh->n_active_fifos, inc);
86 * Initialize fifo segment shared header
89 fifo_segment_init (fifo_segment_t * fs)
91 fifo_segment_header_t *fsh;
92 fifo_segment_slice_t *fss;
93 ssvm_shared_header_t *sh;
94 u32 max_chunk_sz, max_chunks;
100 oldheap = ssvm_push_heap (sh);
103 * Manually align the fifo segment header to sizeof(uword) = 8 bytes.
104 * Long story made short: the "process-private" fifo segment
105 * is allocated from the main heap, not mmapped. dlmalloc
106 * only guarantees 4-byte alignment, and on aarch64
107 * the fsh can end up 4-byte but not 8-byte aligned.
108 * That eventually causes the atomic op in fifo_segment_update_free_bytes
111 fsh = clib_mem_alloc_aligned (sizeof (*fsh), sizeof (uword));
112 clib_memset (fsh, 0, sizeof (*fsh));
113 fs->h = sh->opaque[0] = fsh;
114 fs->n_slices = clib_max (fs->n_slices, 1);
116 fsh->ssvm_sh = fs->ssvm.sh;
117 fsh->n_slices = fs->n_slices;
118 max_fifo = clib_min ((fsh_free_space (fsh) - 4096) / 2,
119 FIFO_SEGMENT_MAX_FIFO_SIZE);
120 fsh->max_log2_chunk_size = max_log2 (max_fifo);
122 fsh->slices = clib_mem_alloc (sizeof (*fss) * fs->n_slices);
123 clib_memset (fsh->slices, 0, sizeof (*fss) * fs->n_slices);
124 max_chunk_sz = fsh->max_log2_chunk_size - FIFO_SEGMENT_MIN_LOG2_FIFO_SIZE;
126 for (i = 0; i < fs->n_slices; i++)
128 fss = fsh_slice_get (fsh, i);
129 vec_validate_init_empty (fss->free_chunks, max_chunk_sz, 0);
132 ssvm_pop_heap (oldheap);
134 fsh->n_free_bytes = fsh_free_space (fsh);
135 max_chunks = fsh->n_free_bytes / FIFO_SEGMENT_MIN_FIFO_SIZE;
136 fsh->n_reserved_bytes = (max_chunks / 4) * sizeof (rb_node_t);
142 * Create a fifo segment and initialize as master
145 fifo_segment_create (fifo_segment_main_t * sm, fifo_segment_create_args_t * a)
151 /* Allocate a fresh segment */
152 pool_get_zero (sm->segments, fs);
154 baseva = a->segment_type == SSVM_SEGMENT_PRIVATE ? ~0ULL : sm->next_baseva;
155 fs->ssvm.ssvm_size = a->segment_size;
156 fs->ssvm.i_am_master = 1;
157 fs->ssvm.my_pid = getpid ();
158 fs->ssvm.name = format (0, "%s%c", a->segment_name, 0);
159 fs->ssvm.requested_va = baseva;
161 if ((rv = ssvm_master_init (&fs->ssvm, a->segment_type)))
163 pool_put (sm->segments, fs);
167 /* Note: requested_va updated due to seg base addr randomization */
168 sm->next_baseva = fs->ssvm.sh->ssvm_va + fs->ssvm.ssvm_size;
170 fifo_segment_init (fs);
171 vec_add1 (a->new_segment_indices, fs - sm->segments);
176 * Attach as slave to a fifo segment
179 fifo_segment_attach (fifo_segment_main_t * sm, fifo_segment_create_args_t * a)
184 pool_get_zero (sm->segments, fs);
186 fs->ssvm.ssvm_size = a->segment_size;
187 fs->ssvm.my_pid = getpid ();
188 fs->ssvm.name = format (0, "%s%c", a->segment_name, 0);
189 fs->ssvm.requested_va = sm->next_baseva;
190 if (a->segment_type == SSVM_SEGMENT_MEMFD)
191 fs->ssvm.fd = a->memfd_fd;
193 fs->ssvm.attach_timeout = sm->timeout_in_seconds;
195 if ((rv = ssvm_slave_init (&fs->ssvm, a->segment_type)))
197 _vec_len (fs) = vec_len (fs) - 1;
201 /* Fish the segment header */
202 fs->h = fs->ssvm.sh->opaque[0];
204 vec_add1 (a->new_segment_indices, fs - sm->segments);
209 fifo_segment_delete (fifo_segment_main_t * sm, fifo_segment_t * s)
211 ssvm_delete (&s->ssvm);
212 clib_memset (s, 0xfe, sizeof (*s));
213 pool_put (sm->segments, s);
217 fifo_segment_index (fifo_segment_main_t * sm, fifo_segment_t * s)
219 return s - sm->segments;
223 fifo_segment_get_segment (fifo_segment_main_t * sm, u32 segment_index)
225 return pool_elt_at_index (sm->segments, segment_index);
229 fifo_segment_info (fifo_segment_t * seg, char **address, size_t * size)
231 *address = (char *) seg->ssvm.sh->ssvm_va;
232 *size = seg->ssvm.ssvm_size;
236 fifo_segment_main_init (fifo_segment_main_t * sm, u64 baseva,
237 u32 timeout_in_seconds)
239 sm->next_baseva = baseva;
240 sm->timeout_in_seconds = timeout_in_seconds;
244 fs_freelist_for_size (u32 size)
246 return max_log2 (size) - FIFO_SEGMENT_MIN_LOG2_FIFO_SIZE;
250 fs_freelist_index_to_size (u32 fl_index)
252 return 1 << (fl_index + FIFO_SEGMENT_MIN_LOG2_FIFO_SIZE);
256 fs_chunk_size_is_valid (fifo_segment_header_t * fsh, u32 size)
259 * 4K minimum. It's not likely that anything good will happen
260 * with a smaller FIFO.
262 return size >= FIFO_SEGMENT_MIN_FIFO_SIZE
263 && size <= (1 << fsh->max_log2_chunk_size);
267 fs_try_alloc_fifo_freelist (fifo_segment_slice_t * fss,
268 u32 fl_index, u32 data_bytes)
274 c = fss->free_chunks[fl_index];
279 fss->free_fifos = f->next;
280 fss->free_chunks[fl_index] = c->next;
283 c->length = data_bytes;
284 memset (f, 0, sizeof (*f));
288 fss->n_fl_chunk_bytes -= fs_freelist_index_to_size (fl_index);
293 fs_try_alloc_fifo_freelist_multi_chunk (fifo_segment_header_t * fsh,
294 fifo_segment_slice_t * fss,
297 svm_fifo_chunk_t *c, *first = 0, *last = 0;
298 u32 fl_index, fl_size, n_alloc = 0;
304 void *oldheap = ssvm_push_heap (fsh->ssvm_sh);
305 f = clib_mem_alloc_aligned (sizeof (*f), CLIB_CACHE_LINE_BYTES);
306 ssvm_pop_heap (oldheap);
309 memset (f, 0, sizeof (*f));
310 fsh_free_bytes_sub (fsh, sizeof (*f));
314 fss->free_fifos = f->next;
317 fl_index = fs_freelist_for_size (data_bytes);
321 fl_size = fs_freelist_index_to_size (fl_index);
325 c = fss->free_chunks[fl_index];
328 fss->free_chunks[fl_index] = c->next;
334 c->length = clib_min (fl_size, data_bytes);
335 data_bytes -= c->length;
339 /* Failed to allocate with smaller chunks */
342 /* free all chunks if any allocated */
346 fl_index = fs_freelist_for_size (c->length);
347 fl_size = fs_freelist_index_to_size (fl_index);
348 c->next = fss->free_chunks[fl_index];
349 fss->free_chunks[fl_index] = c;
350 fss->n_fl_chunk_bytes += fl_size;
351 data_bytes += fl_size;
354 fl_index = fs_freelist_for_size (data_bytes);
355 if (fss->free_chunks[fl_index + 1])
358 fl_size = fs_freelist_index_to_size (fl_index);
362 f->next = fss->free_fifos;
367 fl_size = fl_size >> 1;
371 f->start_chunk = first;
374 fss->n_fl_chunk_bytes -= n_alloc;
379 fs_try_alloc_fifo_batch (fifo_segment_header_t * fsh,
380 fifo_segment_slice_t * fss,
381 u32 fl_index, u32 batch_size)
383 u32 size, hdrs, rounded_data_size;
390 rounded_data_size = fs_freelist_index_to_size (fl_index);
391 hdrs = sizeof (*f) + sizeof (*c);
392 size = (hdrs + rounded_data_size) * batch_size;
394 oldheap = ssvm_push_heap (fsh->ssvm_sh);
395 fmem = clib_mem_alloc_aligned_at_offset (size, CLIB_CACHE_LINE_BYTES,
396 0 /* align_offset */ ,
397 0 /* os_out_of_memory */ );
398 ssvm_pop_heap (oldheap);
404 /* Carve fifo + chunk space */
405 for (i = 0; i < batch_size; i++)
407 f = (svm_fifo_t *) fmem;
408 memset (f, 0, sizeof (*f));
409 f->next = fss->free_fifos;
411 c = (svm_fifo_chunk_t *) (fmem + sizeof (*f));
413 c->length = rounded_data_size;
414 c->next = fss->free_chunks[fl_index];
415 fss->free_chunks[fl_index] = c;
416 fmem += hdrs + rounded_data_size;
419 fss->n_fl_chunk_bytes += batch_size * rounded_data_size;
420 fsh_free_bytes_sub (fsh, size);
426 * Try to allocate new fifo
428 * Tries the following steps in order:
429 * - grab fifo and chunk from freelists
430 * - batch fifo and chunk allocation
431 * - single fifo allocation
432 * - grab multiple fifo chunks from freelists
435 fs_try_alloc_fifo (fifo_segment_header_t * fsh, fifo_segment_slice_t * fss,
438 u32 fifo_sz, fl_index;
442 fl_index = fs_freelist_for_size (data_bytes);
443 fifo_sz = sizeof (svm_fifo_t) + sizeof (svm_fifo_chunk_t);
444 fifo_sz += 1 << max_log2 (data_bytes);
446 if (fss->free_fifos && fss->free_chunks[fl_index])
448 f = fs_try_alloc_fifo_freelist (fss, fl_index, data_bytes);
454 n_free_bytes = fsh_n_free_bytes (fsh);
455 if (fifo_sz * FIFO_SEGMENT_ALLOC_BATCH_SIZE < n_free_bytes)
457 if (fs_try_alloc_fifo_batch (fsh, fss, fl_index,
458 FIFO_SEGMENT_ALLOC_BATCH_SIZE))
461 f = fs_try_alloc_fifo_freelist (fss, fl_index, data_bytes);
464 if (fifo_sz <= n_free_bytes)
466 void *oldheap = ssvm_push_heap (fsh->ssvm_sh);
467 f = svm_fifo_create (data_bytes);
468 ssvm_pop_heap (oldheap);
471 fsh_free_bytes_sub (fsh, fifo_sz);
475 if (data_bytes <= fss->n_fl_chunk_bytes)
476 f = fs_try_alloc_fifo_freelist_multi_chunk (fsh, fss, data_bytes);
484 * Allocate fifo in fifo segment
487 fifo_segment_alloc_fifo_w_slice (fifo_segment_t * fs, u32 slice_index,
488 u32 data_bytes, fifo_segment_ftype_t ftype)
490 fifo_segment_header_t *fsh = fs->h;
491 fifo_segment_slice_t *fss;
494 ASSERT (slice_index < fs->n_slices);
496 fss = fsh_slice_get (fsh, slice_index);
497 f = fs_try_alloc_fifo (fsh, fss, data_bytes);
501 f->slice_index = slice_index;
503 /* (re)initialize the fifo, as in svm_fifo_create */
504 svm_fifo_init (f, data_bytes);
506 /* Initialize chunks and rbtree for multi-chunk fifos */
507 if (f->start_chunk->next != f->start_chunk)
509 void *oldheap = ssvm_push_heap (fsh->ssvm_sh);
510 svm_fifo_init_chunks (f);
511 ssvm_pop_heap (oldheap);
514 /* If rx fifo type add to active fifos list. When cleaning up segment,
515 * we need a list of active sessions that should be disconnected. Since
516 * both rx and tx fifos keep pointers to the session, it's enough to track
518 if (ftype == FIFO_SEGMENT_RX_FIFO)
522 fss->fifos->prev = f;
523 f->next = fss->fifos;
526 f->flags |= SVM_FIFO_F_LL_TRACKED;
528 fsh_active_fifos_update (fsh, 1);
535 * Free fifo allocated in fifo segment
538 fifo_segment_free_fifo (fifo_segment_t * fs, svm_fifo_t * f)
540 fifo_segment_header_t *fsh = fs->h;
541 svm_fifo_chunk_t *cur, *next;
542 fifo_segment_slice_t *fss;
546 ASSERT (f->refcnt > 0);
551 fss = fsh_slice_get (fsh, f->slice_index);
553 /* Remove from active list. Only rx fifos are tracked */
554 if (f->flags & SVM_FIFO_F_LL_TRACKED)
557 f->prev->next = f->next;
559 fss->fifos = f->next;
561 f->next->prev = f->prev;
562 f->flags &= ~SVM_FIFO_F_LL_TRACKED;
565 /* Add to free list */
566 f->next = fss->free_fifos;
570 /* Free fifo chunks */
571 cur = f->start_chunk;
575 fl_index = fs_freelist_for_size (cur->length);
576 ASSERT (fl_index < vec_len (fss->free_chunks));
577 cur->next = fss->free_chunks[fl_index];
578 fss->free_chunks[fl_index] = cur;
579 fss->n_fl_chunk_bytes += fs_freelist_index_to_size (fl_index);
582 while (cur != f->start_chunk);
584 f->start_chunk = f->end_chunk = f->new_chunks = 0;
585 f->head_chunk = f->tail_chunk = f->ooo_enq = f->ooo_deq = 0;
587 oldheap = ssvm_push_heap (fsh->ssvm_sh);
588 svm_fifo_free_chunk_lookup (f);
589 ssvm_pop_heap (oldheap);
591 /* not allocated on segment heap */
592 svm_fifo_free_ooo_data (f);
596 f->master_session_index = ~0;
597 f->master_thread_index = ~0;
600 fsh_active_fifos_update (fsh, -1);
604 fifo_segment_prealloc_fifo_hdrs (fifo_segment_t * fs, u32 slice_index,
607 fifo_segment_header_t *fsh = fs->h;
608 fifo_segment_slice_t *fss;
615 fss = fsh_slice_get (fsh, slice_index);
616 size = (sizeof (*f)) * batch_size;
618 oldheap = ssvm_push_heap (fsh->ssvm_sh);
619 fmem = clib_mem_alloc_aligned_at_offset (size, CLIB_CACHE_LINE_BYTES,
620 0 /* align_offset */ ,
621 0 /* os_out_of_memory */ );
622 ssvm_pop_heap (oldheap);
628 /* Carve fifo + chunk space */
629 for (i = 0; i < batch_size; i++)
631 f = (svm_fifo_t *) fmem;
632 memset (f, 0, sizeof (*f));
633 f->next = fss->free_fifos;
638 fsh_free_bytes_sub (fsh, size);
644 fifo_segment_prealloc_fifo_chunks (fifo_segment_t * fs, u32 slice_index,
645 u32 chunk_size, u32 batch_size)
647 u32 size, rounded_data_size, fl_index;
648 fifo_segment_header_t *fsh = fs->h;
649 fifo_segment_slice_t *fss;
655 if (!fs_chunk_size_is_valid (fsh, chunk_size))
657 clib_warning ("chunk size out of range %d", chunk_size);
661 fl_index = fs_freelist_for_size (chunk_size);
662 rounded_data_size = fs_freelist_index_to_size (fl_index);
663 size = (sizeof (*c) + rounded_data_size) * batch_size;
665 oldheap = ssvm_push_heap (fsh->ssvm_sh);
666 cmem = clib_mem_alloc_aligned_at_offset (size, CLIB_CACHE_LINE_BYTES,
667 0 /* align_offset */ ,
668 0 /* os_out_of_memory */ );
669 ssvm_pop_heap (oldheap);
675 fss = fsh_slice_get (fsh, slice_index);
677 /* Carve fifo + chunk space */
678 for (i = 0; i < batch_size; i++)
680 c = (svm_fifo_chunk_t *) cmem;
682 c->length = rounded_data_size;
683 c->next = fss->free_chunks[fl_index];
684 fss->free_chunks[fl_index] = c;
685 cmem += sizeof (*c) + rounded_data_size;
688 fss->n_fl_chunk_bytes += batch_size * rounded_data_size;
689 fsh_free_bytes_sub (fsh, size);
695 * Pre-allocates fifo pairs in fifo segment
698 fifo_segment_preallocate_fifo_pairs (fifo_segment_t * fs,
699 u32 rx_fifo_size, u32 tx_fifo_size,
702 u32 rx_rounded_data_size, tx_rounded_data_size, pair_size, pairs_to_alloc;
703 u32 hdrs, pairs_per_slice, alloc_now;
704 fifo_segment_header_t *fsh = fs->h;
705 int rx_fl_index, tx_fl_index, i;
706 fifo_segment_slice_t *fss;
707 uword space_available;
709 /* Parameter check */
710 if (rx_fifo_size == 0 || tx_fifo_size == 0 || *n_fifo_pairs == 0)
713 if (!fs_chunk_size_is_valid (fsh, rx_fifo_size))
715 clib_warning ("rx fifo_size out of range %d", rx_fifo_size);
719 if (!fs_chunk_size_is_valid (fsh, tx_fifo_size))
721 clib_warning ("tx fifo_size out of range %d", tx_fifo_size);
725 rx_rounded_data_size = (1 << (max_log2 (rx_fifo_size)));
726 rx_fl_index = fs_freelist_for_size (rx_fifo_size);
727 tx_rounded_data_size = (1 << (max_log2 (tx_fifo_size)));
728 tx_fl_index = fs_freelist_for_size (tx_fifo_size);
730 hdrs = sizeof (svm_fifo_t) + sizeof (svm_fifo_chunk_t);
732 /* Calculate space requirements */
733 pair_size = 2 * hdrs + rx_rounded_data_size + tx_rounded_data_size;
734 space_available = fsh_free_space (fsh);
735 pairs_to_alloc = space_available / pair_size;
736 pairs_to_alloc = clib_min (pairs_to_alloc, *n_fifo_pairs);
737 pairs_per_slice = pairs_to_alloc / fs->n_slices;
738 pairs_per_slice += pairs_to_alloc % fs->n_slices ? 1 : 0;
740 if (!pairs_per_slice)
743 for (i = 0; i < fs->n_slices; i++)
745 fss = fsh_slice_get (fsh, i);
746 alloc_now = clib_min (pairs_per_slice, *n_fifo_pairs);
747 if (fs_try_alloc_fifo_batch (fsh, fss, rx_fl_index, alloc_now))
748 clib_warning ("rx prealloc failed: pairs %u", alloc_now);
749 if (fs_try_alloc_fifo_batch (fsh, fss, tx_fl_index, alloc_now))
750 clib_warning ("tx prealloc failed: pairs %u", alloc_now);
752 /* Account for the pairs allocated */
753 *n_fifo_pairs -= alloc_now;
758 fifo_segment_grow_fifo (fifo_segment_t * fs, svm_fifo_t * f, u32 chunk_size)
760 fifo_segment_header_t *fsh = fs->h;
761 fifo_segment_slice_t *fss;
766 fl_index = fs_freelist_for_size (chunk_size);
767 fss = fsh_slice_get (fsh, f->slice_index);
769 oldheap = ssvm_push_heap (fsh->ssvm_sh);
771 c = fss->free_chunks[fl_index];
776 if (fsh_n_free_bytes (fsh) < chunk_size)
778 ssvm_pop_heap (oldheap);
782 c = svm_fifo_chunk_alloc (chunk_size);
785 ssvm_pop_heap (oldheap);
788 fsh_free_bytes_sub (fsh, chunk_size + sizeof (*c));
792 fss->free_chunks[fl_index] = c->next;
794 fss->n_fl_chunk_bytes -= fs_freelist_index_to_size (fl_index);
797 svm_fifo_add_chunk (f, c);
799 ssvm_pop_heap (oldheap);
804 fifo_segment_collect_fifo_chunks (fifo_segment_t * fs, svm_fifo_t * f)
806 fifo_segment_header_t *fsh = fs->h;
807 svm_fifo_chunk_t *cur, *next;
808 fifo_segment_slice_t *fss;
812 oldheap = ssvm_push_heap (fsh->ssvm_sh);
813 cur = svm_fifo_collect_chunks (f);
815 fss = fsh_slice_get (fsh, f->slice_index);
820 fl_index = fs_freelist_for_size (cur->length);
821 cur->next = fss->free_chunks[fl_index];
822 fss->free_chunks[fl_index] = cur;
826 ssvm_pop_heap (oldheap);
832 * Get number of active fifos
835 fifo_segment_num_fifos (fifo_segment_t * fs)
837 return clib_atomic_load_relax_n (&fs->h->n_active_fifos);
841 fs_slice_num_free_fifos (fifo_segment_slice_t * fss)
859 fifo_segment_num_free_fifos (fifo_segment_t * fs)
861 fifo_segment_header_t *fsh = fs->h;
862 fifo_segment_slice_t *fss;
866 for (slice_index = 0; slice_index < fs->n_slices; slice_index++)
868 fss = fsh_slice_get (fsh, slice_index);
869 count += fs_slice_num_free_fifos (fss);
875 fs_slice_num_free_chunks (fifo_segment_slice_t * fss, u32 size)
877 u32 count = 0, rounded_size, fl_index;
881 /* Count all free chunks? */
884 for (i = 0; i < vec_len (fss->free_chunks); i++)
886 c = fss->free_chunks[i];
899 rounded_size = (1 << (max_log2 (size)));
900 fl_index = fs_freelist_for_size (rounded_size);
902 if (fl_index >= vec_len (fss->free_chunks))
905 c = fss->free_chunks[fl_index];
918 fifo_segment_num_free_chunks (fifo_segment_t * fs, u32 size)
920 fifo_segment_header_t *fsh = fs->h;
921 fifo_segment_slice_t *fss;
925 for (slice_index = 0; slice_index < fs->n_slices; slice_index++)
927 fss = fsh_slice_get (fsh, slice_index);
928 count += fs_slice_num_free_chunks (fss, size);
934 fifo_segment_update_free_bytes (fifo_segment_t * fs)
936 fsh_update_free_bytes (fs->h);
940 fifo_segment_free_bytes (fifo_segment_t * fs)
942 return fsh_n_free_bytes (fs->h);
946 fifo_segment_fl_chunk_bytes (fifo_segment_t * fs)
948 fifo_segment_header_t *fsh = fs->h;
949 fifo_segment_slice_t *fss;
953 for (slice_index = 0; slice_index < fs->n_slices; slice_index++)
955 fss = fsh_slice_get (fsh, slice_index);
956 n_bytes += fss->n_fl_chunk_bytes;
963 fifo_segment_has_fifos (fifo_segment_t * fs)
965 fifo_segment_header_t *fsh = fs->h;
966 fifo_segment_slice_t *fss;
969 for (slice_index = 0; slice_index < fs->n_slices; slice_index++)
971 fss = fsh_slice_get (fsh, slice_index);
979 fifo_segment_get_slice_fifo_list (fifo_segment_t * fs, u32 slice_index)
981 fifo_segment_header_t *fsh = fs->h;
982 fifo_segment_slice_t *fss;
984 fss = fsh_slice_get (fsh, slice_index);
989 format_fifo_segment_type (u8 * s, va_list * args)
992 sp = va_arg (*args, fifo_segment_t *);
993 ssvm_segment_type_t st = ssvm_type (&sp->ssvm);
995 if (st == SSVM_SEGMENT_PRIVATE)
996 s = format (s, "%s", "private-heap");
997 else if (st == SSVM_SEGMENT_MEMFD)
998 s = format (s, "%s", "memfd");
999 else if (st == SSVM_SEGMENT_SHM)
1000 s = format (s, "%s", "shm");
1002 s = format (s, "%s", "unknown");
1007 * Segment format function
1010 format_fifo_segment (u8 * s, va_list * args)
1012 u32 count, indent, active_fifos, free_fifos, fifo_hdr = 0;
1013 fifo_segment_t *fs = va_arg (*args, fifo_segment_t *);
1014 int verbose __attribute__ ((unused)) = va_arg (*args, int);
1015 uword est_chunk_bytes, est_free_seg_bytes, free_chunks;
1016 uword chunk_bytes = 0, free_seg_bytes, chunk_size;
1017 fifo_segment_header_t *fsh;
1018 fifo_segment_slice_t *fss;
1019 svm_fifo_chunk_t *c;
1025 indent = format_get_indent (s) + 2;
1026 #if USE_DLMALLOC == 0
1027 s = format (s, "%U segment heap: %U\n", format_white_space, indent,
1028 format_mheap, fsh->ssvm_sh->heap, verbose);
1029 s = format (s, "%U segment has %u active fifos\n",
1030 format_white_space, indent, fifo_segment_num_fifos (fsh));
1035 s = format (s, "%-15s%15s%15s%15s%15s%15s", "Name", "Type",
1036 "HeapSize (M)", "ActiveFifos", "FreeFifos", "Address");
1040 fifo_segment_info (fs, &address, &size);
1041 active_fifos = fifo_segment_num_fifos (fs);
1042 free_fifos = fifo_segment_num_free_fifos (fs);
1044 s = format (s, "%-15v%15U%15llu%15u%15u%15llx", ssvm_name (&fs->ssvm),
1045 format_fifo_segment_type, fs, size >> 20ULL, active_fifos,
1046 free_fifos, address);
1053 free_chunks = fifo_segment_num_free_chunks (fs, ~0);
1055 s = format (s, "\n\n%UFree chunks by size:\n", format_white_space,
1058 s = format (s, "\n");
1060 for (slice_index = 0; slice_index < fs->n_slices; slice_index++)
1062 fss = fsh_slice_get (fsh, slice_index);
1063 for (i = 0; i < vec_len (fss->free_chunks); i++)
1065 c = fss->free_chunks[i];
1075 chunk_size = fs_freelist_index_to_size (i);
1076 s = format (s, "%U%-5u kB: %u\n", format_white_space, indent + 2,
1077 chunk_size >> 10, count);
1079 chunk_bytes += count * chunk_size;
1083 fifo_hdr = free_fifos * sizeof (svm_fifo_t);
1084 est_chunk_bytes = fifo_segment_fl_chunk_bytes (fs);
1085 est_free_seg_bytes = fifo_segment_free_bytes (fs);
1086 fifo_segment_update_free_bytes (fs);
1087 free_seg_bytes = fifo_segment_free_bytes (fs);
1089 s = format (s, "\n%Useg free bytes: %U (%lu) estimated: %U (%lu)\n",
1090 format_white_space, indent + 2, format_memory_size,
1091 free_seg_bytes, free_seg_bytes, format_memory_size,
1092 est_free_seg_bytes, est_free_seg_bytes);
1093 s = format (s, "%Uchunk free bytes: %U (%lu) estimated: %U (%lu)\n",
1094 format_white_space, indent + 2, format_memory_size, chunk_bytes,
1095 chunk_bytes, format_memory_size, est_chunk_bytes,
1097 s = format (s, "%Ufifo hdr free bytes: %U (%u) reserved %U (%lu)\n",
1098 format_white_space, indent + 2, format_memory_size, fifo_hdr,
1099 fifo_hdr, format_memory_size, fsh->n_reserved_bytes,
1100 fsh->n_reserved_bytes);
1101 s = format (s, "\n");
1107 * fd.io coding-style-patch-verification: ON
1110 * eval: (c-set-style "gnu")