text: 
  /*
   * Copyright (C) Igor Sysoev
   * Copyright (C) Nginx, Inc.
   */
  
  
  #ifndef _NGX_CYCLE_H_INCLUDED_
  #define _NGX_CYCLE_H_INCLUDED_
  
  
  #include <ngx_config.h>
  #include <ngx_core.h>
  
  
  #ifndef NGX_CYCLE_POOL_SIZE
  #define NGX_CYCLE_POOL_SIZE     NGX_DEFAULT_POOL_SIZE
  #endif
  
  
  #define NGX_DEBUG_POINTS_STOP   1
  #define NGX_DEBUG_POINTS_ABORT  2
  
  
  typedef struct ngx_shm_zone_s  ngx_shm_zone_t;
  
  typedef ngx_int_t (*ngx_shm_zone_init_pt) (ngx_shm_zone_t *zone, void *data);
  
  struct ngx_shm_zone_s {
      void                     *data;
      ngx_shm_t                 shm;
      ngx_shm_zone_init_pt      init;
      void                     *tag;
      ngx_uint_t                noreuse;  /* unsigned  noreuse:1; */
  };
  
  
  struct ngx_cycle_s {
      void                  ****conf_ctx;
      ngx_pool_t               *pool;
  
      ngx_log_t                *log;
      ngx_log_t                 new_log;
  
      ngx_uint_t                log_use_stderr;  /* unsigned  log_use_stderr:1; */
  
      ngx_connection_t        **files;
      ngx_connection_t         *free_connections;
      ngx_uint_t                free_connection_n;
  
      ngx_queue_t               reusable_connections_queue;
  
      ngx_array_t               listening;
      ngx_array_t               paths;
      ngx_array_t               config_dump;
      ngx_list_t                open_files;
      ngx_list_t                shared_memory;
  
      ngx_uint_t                connection_n;
      ngx_uint_t                files_n;
  
      ngx_connection_t         *connections;
      ngx_event_t              *read_events;
      ngx_event_t              *write_events;
  
      ngx_cycle_t              *old_cycle;
  
      ngx_str_t                 conf_file;
      ngx_str_t                 conf_param;
      ngx_str_t                 conf_prefix;
      ngx_str_t                 prefix;
      ngx_str_t                 lock_file;
      ngx_str_t                 hostname;
  };
  
  
  typedef struct {
       ngx_flag_t               daemon;
       ngx_flag_t               master;
  
       ngx_msec_t               timer_resolution;
  
       ngx_int_t                worker_processes;
       ngx_int_t                debug_points;
  
       ngx_int_t                rlimit_nofile;
       off_t                    rlimit_core;
  
       int                      priority;
  
       ngx_uint_t               cpu_affinity_n;
       uint64_t                *cpu_affinity;
  
       char                    *username;
       ngx_uid_t                user;
       ngx_gid_t                group;
  
       ngx_str_t                working_directory;
       ngx_str_t                lock_file;
  
       ngx_str_t                pid;
       ngx_str_t                oldpid;
  
       ngx_array_t              env;
       char                   **environment;
  } ngx_core_conf_t;
  
  
  #define ngx_is_init_cycle(cycle)  (cycle->conf_ctx == NULL)
  
  
  ngx_cycle_t *ngx_init_cycle(ngx_cycle_t *old_cycle);
  ngx_int_t ngx_create_pidfile(ngx_str_t *name, ngx_log_t *log);
  void ngx_delete_pidfile(ngx_cycle_t *cycle);
  ngx_int_t ngx_signal_process(ngx_cycle_t *cycle, char *sig);
  void ngx_reopen_files(ngx_cycle_t *cycle, ngx_uid_t user);
  char **ngx_set_environment(ngx_cycle_t *cycle, ngx_uint_t *last);
  ngx_pid_t ngx_exec_new_binary(ngx_cycle_t *cycle, char *const *argv);
  uint64_t ngx_get_cpu_affinity(ngx_uint_t n);
  ngx_shm_zone_t *ngx_shared_memory_add(ngx_conf_t *cf, ngx_str_t *name,
      size_t size, void *tag);
  
  
  extern volatile ngx_cycle_t  *ngx_cycle;
  extern ngx_array_t            ngx_old_cycles;
  extern ngx_module_t           ngx_core_module;
  extern ngx_uint_t             ngx_test_config;
  extern ngx_uint_t             ngx_dump_config;
  extern ngx_uint_t             ngx_quiet_mode;
  
  
  #endif /* _NGX_CYCLE_H_INCLUDED_ */
  