Mercurial > hg > nginx
annotate src/os/unix/ngx_shmem.h @ 5994:5abf5af257a7
Upstream: avoid duplicate finalization.
A request may be already finalized when ngx_http_upstream_finalize_request()
is called, due to filter finalization: after filter finalization upstream
can be finalized via ngx_http_upstream_cleanup(), either from
ngx_http_terminate_request(), or because a new request was initiated
to an upstream. Then the upstream code will see an error returned from
the filter chain and will call the ngx_http_upstream_finalize_request()
function again.
To prevent corruption of various upstream data in this situation, make sure
to do nothing but merely call ngx_http_finalize_request().
Prodded by Yichun Zhang, for details see the thread at
http://nginx.org/pipermail/nginx-devel/2015-February/006539.html.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Mon, 02 Mar 2015 21:44:32 +0300 |
parents | d620f497c50f |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
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5 */ |
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696 | 8 #ifndef _NGX_SHMEM_H_INCLUDED_ |
9 #define _NGX_SHMEM_H_INCLUDED_ | |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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605 | 16 typedef struct { |
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17 u_char *addr; |
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18 size_t size; |
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19 ngx_str_t name; |
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20 ngx_log_t *log; |
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21 ngx_uint_t exists; /* unsigned exists:1; */ |
605 | 22 } ngx_shm_t; |
23 | |
24 | |
25 ngx_int_t ngx_shm_alloc(ngx_shm_t *shm); | |
26 void ngx_shm_free(ngx_shm_t *shm); | |
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696 | 29 #endif /* _NGX_SHMEM_H_INCLUDED_ */ |