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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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660
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4 * Copyright (C) Nginx, Inc.
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5 */
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6
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7
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8 #ifndef _NGX_PROCESS_H_INCLUDED_
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9 #define _NGX_PROCESS_H_INCLUDED_
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10
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11
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668
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12 #include <ngx_setaffinity.h>
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80
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13 #include <ngx_setproctitle.h>
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14
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15
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16 typedef pid_t ngx_pid_t;
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17
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92
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18 #define NGX_INVALID_PID -1
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19
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20 typedef void (*ngx_spawn_proc_pt) (ngx_cycle_t *cycle, void *data);
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21
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22 typedef struct {
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23 ngx_pid_t pid;
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24 int status;
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25 ngx_socket_t channel[2];
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26
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27 ngx_spawn_proc_pt proc;
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28 void *data;
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29 char *name;
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30
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31 unsigned respawn:1;
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32 unsigned just_spawn:1;
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33 unsigned detached:1;
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34 unsigned exiting:1;
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35 unsigned exited:1;
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36 } ngx_process_t;
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37
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38
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39 typedef struct {
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40 char *path;
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41 char *name;
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42 char *const *argv;
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43 char *const *envp;
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44 } ngx_exec_ctx_t;
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45
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46
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47 #define NGX_MAX_PROCESSES 1024
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48
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49 #define NGX_PROCESS_NORESPAWN -1
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514
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50 #define NGX_PROCESS_JUST_SPAWN -2
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51 #define NGX_PROCESS_RESPAWN -3
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52 #define NGX_PROCESS_JUST_RESPAWN -4
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53 #define NGX_PROCESS_DETACHED -5
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54
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55
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56 #define ngx_getpid getpid
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108
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57
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58 #ifndef ngx_log_pid
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59 #define ngx_log_pid ngx_pid
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60 #endif
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61
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62
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63 ngx_pid_t ngx_spawn_process(ngx_cycle_t *cycle,
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42
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64 ngx_spawn_proc_pt proc, void *data, char *name, ngx_int_t respawn);
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65 ngx_pid_t ngx_execute(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx);
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66 ngx_int_t ngx_init_signals(ngx_log_t *log);
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10
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67 void ngx_debug_point(void);
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68
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4
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69
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70 #if (NGX_HAVE_SCHED_YIELD)
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71 #define ngx_sched_yield() sched_yield()
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72 #else
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73 #define ngx_sched_yield() usleep(1)
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74 #endif
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75
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76
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2
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77 extern int ngx_argc;
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78 extern char **ngx_argv;
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79 extern char **ngx_os_argv;
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80
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81 extern ngx_pid_t ngx_pid;
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82 extern ngx_socket_t ngx_channel;
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83 extern ngx_int_t ngx_process_slot;
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84 extern ngx_int_t ngx_last_process;
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85 extern ngx_process_t ngx_processes[NGX_MAX_PROCESSES];
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86
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87
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88 #endif /* _NGX_PROCESS_H_INCLUDED_ */
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