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/*
* Copyright (C) Igor Sysoev
* Copyright (C) Nginx, Inc.
*/
#ifndef _NGX_EVENT_BUSY_LOCK_H_INCLUDED_
#define _NGX_EVENT_BUSY_LOCK_H_INCLUDED_
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>
typedef struct ngx_event_busy_lock_ctx_s ngx_event_busy_lock_ctx_t;
struct ngx_event_busy_lock_ctx_s {
ngx_event_t *event;
ngx_event_handler_pt handler;
void *data;
ngx_msec_t timer;
unsigned locked:1;
unsigned waiting:1;
unsigned cache_updated:1;
char *md5;
ngx_int_t slot;
ngx_event_busy_lock_ctx_t *next;
};
typedef struct {
u_char *md5_mask;
char *md5;
ngx_uint_t cacheable;
ngx_uint_t busy;
ngx_uint_t max_busy;
ngx_uint_t waiting;
ngx_uint_t max_waiting;
ngx_event_busy_lock_ctx_t *events;
ngx_event_busy_lock_ctx_t *last;
#if (NGX_THREADS)
ngx_mutex_t *mutex;
#endif
} ngx_event_busy_lock_t;
ngx_int_t ngx_event_busy_lock(ngx_event_busy_lock_t *bl,
ngx_event_busy_lock_ctx_t *ctx);
ngx_int_t ngx_event_busy_lock_cacheable(ngx_event_busy_lock_t *bl,
ngx_event_busy_lock_ctx_t *ctx);
void ngx_event_busy_unlock(ngx_event_busy_lock_t *bl,
ngx_event_busy_lock_ctx_t *ctx);
void ngx_event_busy_lock_cancel(ngx_event_busy_lock_t *bl,
ngx_event_busy_lock_ctx_t *ctx);
#endif /* _NGX_EVENT_BUSY_LOCK_H_INCLUDED_ */
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