1 2 /* 3 * Copyright (C) Igor Sysoev 4 * Copyright (C) NGINX, Inc. 5 */ 6 7 #ifndef _NXT_PROCESS_H_INCLUDED_ 8 #define _NXT_PROCESS_H_INCLUDED_ 9 10 11 typedef pid_t nxt_pid_t; 12 typedef uid_t nxt_uid_t; 13 typedef gid_t nxt_gid_t; 14 15 16 typedef struct { 17 const char *user; 18 nxt_uid_t uid; 19 nxt_gid_t base_gid; 20 nxt_uint_t ngroups; 21 nxt_gid_t *gids; 22 } nxt_user_cred_t; 23 24 typedef struct nxt_process_init_s nxt_process_init_t; 25 typedef nxt_int_t (*nxt_process_start_t)(nxt_task_t *task, void *data); 26 27 28 struct nxt_process_init_s { 29 nxt_process_start_t start; 30 const char *name; 31 nxt_user_cred_t *user_cred; 32 33 nxt_port_handlers_t *port_handlers; 34 const nxt_sig_event_t *signals; 35 36 nxt_process_type_t type; 37 38 void *data; 39 uint32_t stream; 40 41 nxt_bool_t restart; 42 }; 43 44 45 typedef struct nxt_port_mmap_s nxt_port_mmap_t; 46 typedef struct nxt_port_mmaps_s nxt_port_mmaps_t; 47 48 struct nxt_port_mmaps_s { 49 nxt_thread_mutex_t mutex; 50 uint32_t size; 51 uint32_t cap; 52 nxt_port_mmap_t *elts; 53 }; 54 55 56 typedef struct { 57 nxt_pid_t pid; 58 nxt_queue_t ports; /* of nxt_port_t */ 59 nxt_bool_t ready; 60 nxt_bool_t registered; 61 nxt_int_t use_count; 62 63 nxt_process_init_t *init; 64 65 nxt_port_mmaps_t incoming; 66 nxt_port_mmaps_t outgoing; 67 68 nxt_thread_mutex_t cp_mutex; 69 nxt_lvlhsh_t connected_ports; /* of nxt_port_t */ 70 } nxt_process_t; 71 72 73 NXT_EXPORT nxt_pid_t nxt_process_create(nxt_task_t *task, 74 nxt_process_t *process); 75 NXT_EXPORT nxt_pid_t nxt_process_execute(nxt_task_t *task, char *name, 76 char **argv, char **envp); 77 NXT_EXPORT nxt_int_t nxt_process_daemon(nxt_task_t *task); 78 NXT_EXPORT void nxt_nanosleep(nxt_nsec_t ns); 79 80 NXT_EXPORT void nxt_process_arguments(nxt_task_t *task, char **orig_argv, 81 char ***orig_envp); 82 83 #define nxt_process_port_remove(port) \ 84 nxt_queue_remove(&port->link) 85 86 #define nxt_process_port_first(process) \ 87 nxt_queue_link_data(nxt_queue_first(&process->ports), nxt_port_t, link) 88 89 NXT_EXPORT void nxt_process_port_add(nxt_task_t *task, nxt_process_t *process, 90 nxt_port_t *port); 91 92 #define nxt_process_port_each(process, port) \ 93 nxt_queue_each(port, &process->ports, nxt_port_t, link) 94 95 #define nxt_process_port_loop \ 96 nxt_queue_loop 97 98 void nxt_process_close_ports(nxt_task_t *task, nxt_process_t *process); 99 100 void nxt_process_connected_port_add(nxt_process_t *process, nxt_port_t *port); 101 102 void nxt_process_connected_port_remove(nxt_process_t *process, 103 nxt_port_t *port); 104 105 nxt_port_t *nxt_process_connected_port_find(nxt_process_t *process, 106 nxt_pid_t pid, nxt_port_id_t port_id); 107 108 109 void nxt_worker_process_quit_handler(nxt_task_t *task, 110 nxt_port_recv_msg_t *msg); 111 112 113 #if (NXT_HAVE_SETPROCTITLE) 114 115 #define nxt_process_title(task, fmt, ...) \ 116 setproctitle(fmt, __VA_ARGS__) 117 118 #elif (NXT_LINUX || NXT_SOLARIS || NXT_MACOSX) 119 120 #define NXT_SETPROCTITLE_ARGV 1 121 NXT_EXPORT void nxt_process_title(nxt_task_t *task, const char *fmt, ...); 122 123 #endif 124 125 126 #define nxt_sched_yield() \ 127 sched_yield() 128 129 /* 130 * Solaris declares abort() as __NORETURN, 131 * raise(SIGABRT) is mostly the same. 132 */ 133 134 #define nxt_abort() \ 135 (void) raise(SIGABRT) 136 137 NXT_EXPORT nxt_int_t nxt_user_cred_get(nxt_task_t *task, nxt_user_cred_t *uc, 138 const char *group); 139 NXT_EXPORT nxt_int_t nxt_user_cred_set(nxt_task_t *task, nxt_user_cred_t *uc); 140 141 NXT_EXPORT extern nxt_pid_t nxt_pid; 142 NXT_EXPORT extern nxt_pid_t nxt_ppid; 143 NXT_EXPORT extern char **nxt_process_argv; 144 NXT_EXPORT extern char ***nxt_process_environ; 145 146 147 #endif /* _NXT_PROCESS_H_INCLUDED_ */ 148