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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #ifndef _NGX_EVENT_BUSY_LOCK_H_INCLUDED_
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8 #define _NGX_EVENT_BUSY_LOCK_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13 #include <ngx_event.h>
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14
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15 typedef struct ngx_event_busy_lock_ctx_s ngx_event_busy_lock_ctx_t;
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16
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17 struct ngx_event_busy_lock_ctx_s {
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18 ngx_event_t *event;
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19 ngx_event_handler_pt handler;
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20 void *data;
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21 ngx_msec_t timer;
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22
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23 unsigned locked:1;
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24 unsigned waiting:1;
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25 unsigned cache_updated:1;
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26
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27 char *md5;
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28 ngx_int_t slot;
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29
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30 ngx_event_busy_lock_ctx_t *next;
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31 };
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32
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33
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34 typedef struct {
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35 u_char *md5_mask;
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36 char *md5;
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340
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37 ngx_uint_t cacheable;
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0
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38
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39 ngx_uint_t busy;
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40 ngx_uint_t max_busy;
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41
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42 ngx_uint_t waiting;
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43 ngx_uint_t max_waiting;
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44
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45 ngx_event_busy_lock_ctx_t *events;
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46 ngx_event_busy_lock_ctx_t *last;
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47
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48 #if (NGX_THREADS)
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49 ngx_mutex_t *mutex;
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50 #endif
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51 } ngx_event_busy_lock_t;
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52
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53
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54 ngx_int_t ngx_event_busy_lock(ngx_event_busy_lock_t *bl,
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112
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55 ngx_event_busy_lock_ctx_t *ctx);
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340
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56 ngx_int_t ngx_event_busy_lock_cacheable(ngx_event_busy_lock_t *bl,
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112
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57 ngx_event_busy_lock_ctx_t *ctx);
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58 void ngx_event_busy_unlock(ngx_event_busy_lock_t *bl,
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59 ngx_event_busy_lock_ctx_t *ctx);
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60 void ngx_event_busy_lock_cancel(ngx_event_busy_lock_t *bl,
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61 ngx_event_busy_lock_ctx_t *ctx);
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0
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62
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63
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64 #endif /* _NGX_EVENT_BUSY_LOCK_H_INCLUDED_ */
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