Mercurial > hg > nginx
annotate src/event/ngx_event_posted.h @ 8946:56dec0d4e5b1 quic
QUIC: avoid excessive buffer allocations in stream output.
Previously, when a few bytes were send to a QUIC stream by the application, a
4K buffer was allocated for these bytes. Then a STREAM frame was created and
that entire buffer was used as data for that frame. The frame with the buffer
were in use up until the frame was acked by client. Meanwhile, when more
bytes were send to the stream, more buffers were allocated and assigned as
data to newer STREAM frames. In this scenario most buffer memory is unused.
Now the unused part of the stream output buffer is available for further
stream output while earlier parts of the buffer are waiting to be acked.
This is achieved by splitting the output buffer.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Fri, 24 Dec 2021 18:13:51 +0300 |
parents | f1720934c45b |
children |
rev | line source |
---|---|
441
da8c5707af39
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
1 |
da8c5707af39
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
2 /* |
444
42d11f017717
nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
Igor Sysoev <igor@sysoev.ru>
parents:
441
diff
changeset
|
3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
da8c5707af39
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
5 */ |
da8c5707af39
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
6 |
da8c5707af39
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
7 |
306
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
8 #ifndef _NGX_EVENT_POSTED_H_INCLUDED_ |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
9 #define _NGX_EVENT_POSTED_H_INCLUDED_ |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
10 |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
11 |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
12 #include <ngx_config.h> |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
13 #include <ngx_core.h> |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
14 #include <ngx_event.h> |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
15 |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
16 |
5821
3f5f0ab59b35
Events: processing of posted events changed from LIFO to FIFO.
Valentin Bartenev <vbart@nginx.com>
parents:
5820
diff
changeset
|
17 #define ngx_post_event(ev, q) \ |
563 | 18 \ |
6060
3d4730eada9c
Events: made posted events macros safe.
Valentin Bartenev <vbart@nginx.com>
parents:
5821
diff
changeset
|
19 if (!(ev)->posted) { \ |
3d4730eada9c
Events: made posted events macros safe.
Valentin Bartenev <vbart@nginx.com>
parents:
5821
diff
changeset
|
20 (ev)->posted = 1; \ |
3d4730eada9c
Events: made posted events macros safe.
Valentin Bartenev <vbart@nginx.com>
parents:
5821
diff
changeset
|
21 ngx_queue_insert_tail(q, &(ev)->queue); \ |
563 | 22 \ |
6060
3d4730eada9c
Events: made posted events macros safe.
Valentin Bartenev <vbart@nginx.com>
parents:
5821
diff
changeset
|
23 ngx_log_debug1(NGX_LOG_DEBUG_CORE, (ev)->log, 0, "post event %p", ev);\ |
563 | 24 \ |
25 } else { \ | |
6060
3d4730eada9c
Events: made posted events macros safe.
Valentin Bartenev <vbart@nginx.com>
parents:
5821
diff
changeset
|
26 ngx_log_debug1(NGX_LOG_DEBUG_CORE, (ev)->log, 0, \ |
563 | 27 "update posted event %p", ev); \ |
28 } | |
29 | |
30 | |
375
744ccb59062d
nginx-0.0.7-2004-07-02-19:54:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
374
diff
changeset
|
31 #define ngx_delete_posted_event(ev) \ |
563 | 32 \ |
6060
3d4730eada9c
Events: made posted events macros safe.
Valentin Bartenev <vbart@nginx.com>
parents:
5821
diff
changeset
|
33 (ev)->posted = 0; \ |
3d4730eada9c
Events: made posted events macros safe.
Valentin Bartenev <vbart@nginx.com>
parents:
5821
diff
changeset
|
34 ngx_queue_remove(&(ev)->queue); \ |
563 | 35 \ |
6060
3d4730eada9c
Events: made posted events macros safe.
Valentin Bartenev <vbart@nginx.com>
parents:
5821
diff
changeset
|
36 ngx_log_debug1(NGX_LOG_DEBUG_CORE, (ev)->log, 0, \ |
563 | 37 "delete posted event %p", ev); |
375
744ccb59062d
nginx-0.0.7-2004-07-02-19:54:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
374
diff
changeset
|
38 |
373
018569a8f09c
nginx-0.0.7-2004-06-30-19:30:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
372
diff
changeset
|
39 |
306
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
40 |
5821
3f5f0ab59b35
Events: processing of posted events changed from LIFO to FIFO.
Valentin Bartenev <vbart@nginx.com>
parents:
5820
diff
changeset
|
41 void ngx_event_process_posted(ngx_cycle_t *cycle, ngx_queue_t *posted); |
7617
f1720934c45b
SSL: reworked posted next events again.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7612
diff
changeset
|
42 void ngx_event_move_posted_next(ngx_cycle_t *cycle); |
563 | 43 |
44 | |
5821
3f5f0ab59b35
Events: processing of posted events changed from LIFO to FIFO.
Valentin Bartenev <vbart@nginx.com>
parents:
5820
diff
changeset
|
45 extern ngx_queue_t ngx_posted_accept_events; |
7584
9d2ad2fb4423
SSL: available bytes handling (ticket #1431).
Maxim Dounin <mdounin@mdounin.ru>
parents:
6060
diff
changeset
|
46 extern ngx_queue_t ngx_posted_next_events; |
5821
3f5f0ab59b35
Events: processing of posted events changed from LIFO to FIFO.
Valentin Bartenev <vbart@nginx.com>
parents:
5820
diff
changeset
|
47 extern ngx_queue_t ngx_posted_events; |
306
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
48 |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
49 |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
50 #endif /* _NGX_EVENT_POSTED_H_INCLUDED_ */ |