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src/os/unix/ngx_process.h - nginx-1.7.10

Data types defined

Macros defined

Source code


  2. /*
  3. * Copyright (C) Igor Sysoev
  4. * Copyright (C) Nginx, Inc.
  5. */


  8. #ifndef _NGX_PROCESS_H_INCLUDED_
  9. ‌#define _NGX_PROCESS_H_INCLUDED_


  12. #include <ngx_setaffinity.h>
  13. #include <ngx_setproctitle.h>


  16. ‌typedef pid_t       ngx_pid_t;

  18. ‌#define NGX_INVALID_PID  -1

  20. ‌typedef void (*ngx_spawn_proc_pt) (ngx_cycle_t *cycle, void *data);

  22. typedef struct {
  23.     ngx_pid_t           pid;
  24.     int                 status;
  25.     ngx_socket_t        channel[2];

  27.     ngx_spawn_proc_pt   proc;
  28.     void               *data;
  29.     char               *name;

  31.     unsigned            respawn:1;
  32.     unsigned            just_spawn:1;
  33.     unsigned            detached:1;
  34.     unsigned            exiting:1;
  35.     unsigned            exited:1;
  36. ‌} ngx_process_t;


  39. typedef struct {
  40.     char         *path;
  41.     char         *name;
  42.     char *const  *argv;
  43.     char *const  *envp;
  44. ‌} ngx_exec_ctx_t;


  47. ‌#define NGX_MAX_PROCESSES         1024

  49. ‌#define NGX_PROCESS_NORESPAWN     -1
  50. ‌#define NGX_PROCESS_JUST_SPAWN    -2
  51. ‌#define NGX_PROCESS_RESPAWN       -3
  52. ‌#define NGX_PROCESS_JUST_RESPAWN  -4
  53. ‌#define NGX_PROCESS_DETACHED      -5


  56. ‌#define ngx_getpid   getpid

  58. #ifndef ngx_log_pid
  59. ‌#define ngx_log_pid  ngx_pid
  60. #endif


  63. ngx_pid_t ngx_spawn_process(ngx_cycle_t *cycle,
  64.     ngx_spawn_proc_pt proc, void *data, char *name, ngx_int_t respawn);
  65. ngx_pid_t ngx_execute(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx);
  66. ngx_int_t ngx_init_signals(ngx_log_t *log);
  67. void ngx_debug_point(void);


  70. #if (NGX_HAVE_SCHED_YIELD)
  71. ‌#define ngx_sched_yield()  sched_yield()
  72. #else
  73. ‌#define ngx_sched_yield()  usleep(1)
  74. #endif


  77. extern int            ngx_argc;
  78. extern char         **ngx_argv;
  79. extern char         **ngx_os_argv;

  81. extern ngx_pid_t      ngx_pid;
  82. extern ngx_socket_t   ngx_channel;
  83. extern ngx_int_t      ngx_process_slot;
  84. extern ngx_int_t      ngx_last_process;
  85. extern ngx_process_t  ngx_processes[NGX_MAX_PROCESSES];


  88. #endif /* _NGX_PROCESS_H_INCLUDED_ */

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