Mercurial > hg > nginx-quic
annotate src/core/ngx_thread_pool.h @ 6133:af7eba90645d
Win32: shared memory base addresses and remapping.
Two mechanisms are implemented to make it possible to store pointers
in shared memory on Windows, in particular on Windows Vista and later
versions with ASLR:
- The ngx_shm_remap() function added to allow remapping of a shared memory
zone to the address originally used for it in the master process. While
important, it doesn't solve the problem by itself as in many cases it's
not possible to use the address because of conflicts with other
allocations.
- We now create mappings at the same address in all processes by starting
mappings at predefined addresses normally unused by newborn processes.
These two mechanisms combined allow to use shared memory on Windows
almost without problems, including reloads.
Based on the patch by Sergey Brester:
http://mailman.nginx.org/pipermail/nginx-devel/2015-April/006836.html
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 27 Apr 2015 18:25:42 +0300 |
parents | 466bd63b63d1 |
children |
rev | line source |
---|---|
6018
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
1 |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
2 /* |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
3 * Copyright (C) Nginx, Inc. |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
4 * Copyright (C) Valentin V. Bartenev |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
5 */ |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
6 |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
7 |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
8 #ifndef _NGX_THREAD_POOL_H_INCLUDED_ |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
9 #define _NGX_THREAD_POOL_H_INCLUDED_ |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
10 |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
11 |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
12 #include <ngx_config.h> |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
13 #include <ngx_core.h> |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
14 #include <ngx_event.h> |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
15 |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
16 |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
17 struct ngx_thread_task_s { |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
18 ngx_thread_task_t *next; |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
19 ngx_uint_t id; |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
20 void *ctx; |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
21 void (*handler)(void *data, ngx_log_t *log); |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
22 ngx_event_t event; |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
23 }; |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
24 |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
25 |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
26 typedef struct ngx_thread_pool_s ngx_thread_pool_t; |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
27 |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
28 |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
29 ngx_thread_pool_t *ngx_thread_pool_add(ngx_conf_t *cf, ngx_str_t *name); |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
30 ngx_thread_pool_t *ngx_thread_pool_get(ngx_cycle_t *cycle, ngx_str_t *name); |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
31 |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
32 ngx_thread_task_t *ngx_thread_task_alloc(ngx_pool_t *pool, size_t size); |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
33 ngx_int_t ngx_thread_task_post(ngx_thread_pool_t *tp, ngx_thread_task_t *task); |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
34 |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
35 |
466bd63b63d1
Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff
changeset
|
36 #endif /* _NGX_THREAD_POOL_H_INCLUDED_ */ |