#ifndef _NGX_HTTP_BUSY_LOCK_H_INCLUDED_
#define _NGX_HTTP_BUSY_LOCK_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>


typedef struct {
    u_char  *busy_mask;
    char    *busy;
    int      busy_n;

    int      waiting_n;
    int      max_waiting;

    int      conn_n;
    int      max_conn;

    time_t   timeout;

 /* ngx_mutex_t  mutex; */

} ngx_http_busy_lock_t;


int ngx_http_busy_lock(ngx_http_busy_lock_t *bl, u_char *md5);
char *ngx_http_set_busy_lock_slot(ngx_conf_t *cf, ngx_command_t *cmd,
                                  void *conf);


#endif /* _NGX_HTTP_BUSY_LOCK_H_INCLUDED_ */