src/os/unix/ngx_process.h

   1
   2 /*
   3  * Copyright (C) Igor Sysoev
   4  */
   5
   6
   7 #ifndef _NGX_PROCESS_H_INCLUDED_
   8 #define _NGX_PROCESS_H_INCLUDED_
   9
  10
  11 typedef pid_t       ngx_pid_t;
  12
  13 typedef void (*ngx_spawn_proc_pt) (ngx_cycle_t *cycle, void *data);
  14
  15 typedef struct {
  16     ngx_pid_t           pid;
  17     int                 status;
  18     ngx_socket_t        channel[2];
  19
  20     ngx_spawn_proc_pt   proc;
  21     void               *data;
  22     char               *name;
  23
  24     unsigned            respawn:1;
  25     unsigned            just_respawn:1;
  26     unsigned            detached:1;
  27     unsigned            exiting:1;
  28     unsigned            exited:1;
  29 } ngx_process_t;
  30
  31
  32 typedef struct {
  33     char         *path;
  34     char         *name;
  35     char *const  *argv;
  36     char *const  *envp;
  37 } ngx_exec_ctx_t;
  38
  39
  40 #define NGX_MAX_PROCESSES         1024
  41
  42 #define NGX_PROCESS_NORESPAWN     -1
  43 #define NGX_PROCESS_RESPAWN       -2
  44 #define NGX_PROCESS_JUST_RESPAWN  -3
  45 #define NGX_PROCESS_DETACHED      -4
  46
  47
  48 #define ngx_getpid   getpid
  49 #define ngx_log_pid  ngx_pid
  50
  51 ngx_pid_t ngx_spawn_process(ngx_cycle_t *cycle,
  52                             ngx_spawn_proc_pt proc, void *data,
  53                             char *name, ngx_int_t respawn);
  54 ngx_pid_t ngx_execute(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx);
  55 void ngx_process_get_status(void);
  56
  57 #define ngx_sched_yield()  sched_yield()
  58
  59 extern int            ngx_argc;
  60 extern char         **ngx_argv;
  61 extern char         **ngx_os_argv;
  62
  63 extern ngx_pid_t      ngx_pid;
  64 extern ngx_socket_t   ngx_channel;
  65 extern ngx_int_t      ngx_process_slot;
  66 extern ngx_int_t      ngx_last_process;
  67 extern ngx_process_t  ngx_processes[NGX_MAX_PROCESSES];
  68
  69
  70 #endif /* _NGX_PROCESS_H_INCLUDED_ */