Mercurial > hg > nginx
annotate src/os/unix/ngx_os.h @ 6220:5e6142609e48
Core: idle connections now closed only once on exiting.
Iterating through all connections takes a lot of CPU time, especially
with large number of worker connections configured. As a result
nginx processes used to consume CPU time during graceful shutdown.
To mitigate this we now only do a full scan for idle connections when
shutdown signal is received.
Transitions of connections to idle ones are now expected to be
avoided if the ngx_exiting flag is set. The upstream keepalive module
was modified to follow this.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Tue, 11 Aug 2015 16:28:55 +0300 |
parents | 4dc8e7b62216 |
children | 8f038068f4bc |
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:
417
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:
417
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:
417
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:
417
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:
417
diff
changeset
|
7 |
183
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
8 #ifndef _NGX_OS_H_INCLUDED_ |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
9 #define _NGX_OS_H_INCLUDED_ |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
10 |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
11 |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
12 #include <ngx_config.h> |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
13 #include <ngx_core.h> |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
14 |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
15 |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
16 #define NGX_IO_SENDFILE 1 |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
17 |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
18 |
393
5659d773cfa8
nginx-0.0.7-2004-07-15-20:35:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
373
diff
changeset
|
19 typedef ssize_t (*ngx_recv_pt)(ngx_connection_t *c, u_char *buf, size_t size); |
5882
ec81934727a1
Core: added limit to recv_chain().
Roman Arutyunyan <arut@nginx.com>
parents:
5854
diff
changeset
|
20 typedef ssize_t (*ngx_recv_chain_pt)(ngx_connection_t *c, ngx_chain_t *in, |
ec81934727a1
Core: added limit to recv_chain().
Roman Arutyunyan <arut@nginx.com>
parents:
5854
diff
changeset
|
21 off_t limit); |
393
5659d773cfa8
nginx-0.0.7-2004-07-15-20:35:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
373
diff
changeset
|
22 typedef ssize_t (*ngx_send_pt)(ngx_connection_t *c, u_char *buf, size_t size); |
5659d773cfa8
nginx-0.0.7-2004-07-15-20:35:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
373
diff
changeset
|
23 typedef ngx_chain_t *(*ngx_send_chain_pt)(ngx_connection_t *c, ngx_chain_t *in, |
493 | 24 off_t limit); |
183
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
25 |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
26 typedef struct { |
393
5659d773cfa8
nginx-0.0.7-2004-07-15-20:35:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
373
diff
changeset
|
27 ngx_recv_pt recv; |
5659d773cfa8
nginx-0.0.7-2004-07-15-20:35:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
373
diff
changeset
|
28 ngx_recv_chain_pt recv_chain; |
1689 | 29 ngx_recv_pt udp_recv; |
393
5659d773cfa8
nginx-0.0.7-2004-07-15-20:35:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
373
diff
changeset
|
30 ngx_send_pt send; |
5659d773cfa8
nginx-0.0.7-2004-07-15-20:35:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
373
diff
changeset
|
31 ngx_send_chain_pt send_chain; |
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
393
diff
changeset
|
32 ngx_uint_t flags; |
183
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
33 } ngx_os_io_t; |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
34 |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
35 |
449
3b1e8c9df9ad
nginx-0.1.0-2004-10-04-00:02:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
444
diff
changeset
|
36 ngx_int_t ngx_os_init(ngx_log_t *log); |
3b1e8c9df9ad
nginx-0.1.0-2004-10-04-00:02:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
444
diff
changeset
|
37 void ngx_os_status(ngx_log_t *log); |
539 | 38 ngx_int_t ngx_os_specific_init(ngx_log_t *log); |
39 void ngx_os_specific_status(ngx_log_t *log); | |
449
3b1e8c9df9ad
nginx-0.1.0-2004-10-04-00:02:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
444
diff
changeset
|
40 ngx_int_t ngx_daemon(ngx_log_t *log); |
2738
ae81441e23f4
implement "-s signal" option for Unix
Igor Sysoev <igor@sysoev.ru>
parents:
2414
diff
changeset
|
41 ngx_int_t ngx_os_signal_process(ngx_cycle_t *cycle, char *sig, ngx_int_t pid); |
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
183
diff
changeset
|
42 |
183
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
43 |
290
87e73f067470
nginx-0.0.2-2004-03-16-10:10:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
278
diff
changeset
|
44 ssize_t ngx_unix_recv(ngx_connection_t *c, u_char *buf, size_t size); |
5882
ec81934727a1
Core: added limit to recv_chain().
Roman Arutyunyan <arut@nginx.com>
parents:
5854
diff
changeset
|
45 ssize_t ngx_readv_chain(ngx_connection_t *c, ngx_chain_t *entry, off_t limit); |
1689 | 46 ssize_t ngx_udp_unix_recv(ngx_connection_t *c, u_char *buf, size_t size); |
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
393
diff
changeset
|
47 ssize_t ngx_unix_send(ngx_connection_t *c, u_char *buf, size_t size); |
362
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
292
diff
changeset
|
48 ngx_chain_t *ngx_writev_chain(ngx_connection_t *c, ngx_chain_t *in, |
493 | 49 off_t limit); |
183
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
50 |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
51 |
5854
b63e829621ab
Generalized definitions of the number of preallocated iovec's.
Valentin Bartenev <vbart@nginx.com>
parents:
4412
diff
changeset
|
52 #if (IOV_MAX > 64) |
b63e829621ab
Generalized definitions of the number of preallocated iovec's.
Valentin Bartenev <vbart@nginx.com>
parents:
4412
diff
changeset
|
53 #define NGX_IOVS_PREALLOCATE 64 |
b63e829621ab
Generalized definitions of the number of preallocated iovec's.
Valentin Bartenev <vbart@nginx.com>
parents:
4412
diff
changeset
|
54 #else |
b63e829621ab
Generalized definitions of the number of preallocated iovec's.
Valentin Bartenev <vbart@nginx.com>
parents:
4412
diff
changeset
|
55 #define NGX_IOVS_PREALLOCATE IOV_MAX |
b63e829621ab
Generalized definitions of the number of preallocated iovec's.
Valentin Bartenev <vbart@nginx.com>
parents:
4412
diff
changeset
|
56 #endif |
b63e829621ab
Generalized definitions of the number of preallocated iovec's.
Valentin Bartenev <vbart@nginx.com>
parents:
4412
diff
changeset
|
57 |
b63e829621ab
Generalized definitions of the number of preallocated iovec's.
Valentin Bartenev <vbart@nginx.com>
parents:
4412
diff
changeset
|
58 |
5913
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5882
diff
changeset
|
59 typedef struct { |
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5882
diff
changeset
|
60 struct iovec *iovs; |
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5882
diff
changeset
|
61 ngx_uint_t count; |
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5882
diff
changeset
|
62 size_t size; |
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5882
diff
changeset
|
63 ngx_uint_t nalloc; |
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5882
diff
changeset
|
64 } ngx_iovec_t; |
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5882
diff
changeset
|
65 |
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5882
diff
changeset
|
66 ngx_chain_t *ngx_output_chain_to_iovec(ngx_iovec_t *vec, ngx_chain_t *in, |
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5882
diff
changeset
|
67 size_t limit, ngx_log_t *log); |
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5882
diff
changeset
|
68 |
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5882
diff
changeset
|
69 |
5917
2c64b69daec5
Moved writev() handling code to a separate function.
Valentin Bartenev <vbart@nginx.com>
parents:
5913
diff
changeset
|
70 ssize_t ngx_writev(ngx_connection_t *c, ngx_iovec_t *vec); |
2c64b69daec5
Moved writev() handling code to a separate function.
Valentin Bartenev <vbart@nginx.com>
parents:
5913
diff
changeset
|
71 |
2c64b69daec5
Moved writev() handling code to a separate function.
Valentin Bartenev <vbart@nginx.com>
parents:
5913
diff
changeset
|
72 |
183
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
73 extern ngx_os_io_t ngx_os_io; |
449
3b1e8c9df9ad
nginx-0.1.0-2004-10-04-00:02:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
444
diff
changeset
|
74 extern ngx_int_t ngx_ncpu; |
3b1e8c9df9ad
nginx-0.1.0-2004-10-04-00:02:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
444
diff
changeset
|
75 extern ngx_int_t ngx_max_sockets; |
473 | 76 extern ngx_uint_t ngx_inherited_nonblocking; |
77 extern ngx_uint_t ngx_tcp_nodelay_and_tcp_nopush; | |
183
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
78 |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
79 |
455 | 80 #if (NGX_FREEBSD) |
183
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
81 #include <ngx_freebsd.h> |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
82 |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
83 |
455 | 84 #elif (NGX_LINUX) |
196
11fbd0fc041d
nginx-0.0.1-2003-11-26-18:42:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
184
diff
changeset
|
85 #include <ngx_linux.h> |
11fbd0fc041d
nginx-0.0.1-2003-11-26-18:42:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
184
diff
changeset
|
86 |
11fbd0fc041d
nginx-0.0.1-2003-11-26-18:42:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
184
diff
changeset
|
87 |
455 | 88 #elif (NGX_SOLARIS) |
198
34995c5ec6c4
nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
196
diff
changeset
|
89 #include <ngx_solaris.h> |
2128
345a014436d4
*) move Darwin support to separate files
Igor Sysoev <igor@sysoev.ru>
parents:
1689
diff
changeset
|
90 |
345a014436d4
*) move Darwin support to separate files
Igor Sysoev <igor@sysoev.ru>
parents:
1689
diff
changeset
|
91 |
345a014436d4
*) move Darwin support to separate files
Igor Sysoev <igor@sysoev.ru>
parents:
1689
diff
changeset
|
92 #elif (NGX_DARWIN) |
345a014436d4
*) move Darwin support to separate files
Igor Sysoev <igor@sysoev.ru>
parents:
1689
diff
changeset
|
93 #include <ngx_darwin.h> |
198
34995c5ec6c4
nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
196
diff
changeset
|
94 #endif |
34995c5ec6c4
nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
196
diff
changeset
|
95 |
34995c5ec6c4
nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
196
diff
changeset
|
96 |
183
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
97 #endif /* _NGX_OS_H_INCLUDED_ */ |