Mercurial > hg > nginx-quic
annotate src/event/ngx_event_busy_lock.h @ 4569:1db899642518
Upstream: reject upstreams without normal servers.
Such upstreams cause CPU hog later in the code as number of peers isn't
expected to be 0. Currently this may happen either if there are only backup
servers defined in an upstream block, or if server with ipv6 address used
in an upstream block.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Mon, 02 Apr 2012 21:29:35 +0000 |
parents | d620f497c50f |
children | 457ec43dd8d5 |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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8 #ifndef _NGX_EVENT_BUSY_LOCK_H_INCLUDED_ |
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9 #define _NGX_EVENT_BUSY_LOCK_H_INCLUDED_ |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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14 #include <ngx_event.h> |
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15 |
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16 typedef struct ngx_event_busy_lock_ctx_s ngx_event_busy_lock_ctx_t; |
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17 |
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18 struct ngx_event_busy_lock_ctx_s { |
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19 ngx_event_t *event; |
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20 ngx_event_handler_pt handler; |
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21 void *data; |
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22 ngx_msec_t timer; |
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23 |
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24 unsigned locked:1; |
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25 unsigned waiting:1; |
276
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26 unsigned cache_updated:1; |
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27 |
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28 char *md5; |
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29 ngx_int_t slot; |
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30 |
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31 ngx_event_busy_lock_ctx_t *next; |
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32 }; |
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33 |
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34 |
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35 typedef struct { |
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36 u_char *md5_mask; |
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37 char *md5; |
1565 | 38 ngx_uint_t cacheable; |
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39 |
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40 ngx_uint_t busy; |
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41 ngx_uint_t max_busy; |
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42 |
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43 ngx_uint_t waiting; |
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44 ngx_uint_t max_waiting; |
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45 |
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46 ngx_event_busy_lock_ctx_t *events; |
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47 ngx_event_busy_lock_ctx_t *last; |
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48 |
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49 #if (NGX_THREADS) |
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50 ngx_mutex_t *mutex; |
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51 #endif |
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52 } ngx_event_busy_lock_t; |
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53 |
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54 |
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55 ngx_int_t ngx_event_busy_lock(ngx_event_busy_lock_t *bl, |
563 | 56 ngx_event_busy_lock_ctx_t *ctx); |
1565 | 57 ngx_int_t ngx_event_busy_lock_cacheable(ngx_event_busy_lock_t *bl, |
563 | 58 ngx_event_busy_lock_ctx_t *ctx); |
59 void ngx_event_busy_unlock(ngx_event_busy_lock_t *bl, | |
60 ngx_event_busy_lock_ctx_t *ctx); | |
61 void ngx_event_busy_lock_cancel(ngx_event_busy_lock_t *bl, | |
62 ngx_event_busy_lock_ctx_t *ctx); | |
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63 |
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64 |
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65 #endif /* _NGX_EVENT_BUSY_LOCK_H_INCLUDED_ */ |