155 lines
4.3 KiB
C
155 lines
4.3 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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* Copyright (C) NGINX, Inc.
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*/
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#ifndef _NXT_PORT_H_INCLUDED_
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#define _NXT_PORT_H_INCLUDED_
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typedef enum {
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NXT_PORT_MSG_QUIT = 0,
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NXT_PORT_MSG_NEW_PORT,
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NXT_PORT_MSG_CHANGE_FILE,
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NXT_PORT_MSG_MMAP,
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NXT_PORT_MSG_DATA,
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NXT_PORT_MSG_REMOVE_PID,
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NXT_PORT_MSG_READY,
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NXT_PORT_MSG_MAX,
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} nxt_port_msg_type_t;
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/* Passed as a first iov chunk. */
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typedef struct {
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uint32_t stream;
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nxt_pid_t pid;
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nxt_port_id_t reply_port;
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nxt_port_msg_type_t type:8;
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uint8_t last; /* 1 bit */
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/* Message data send using mmap, next chunk is a nxt_port_mmap_msg_t. */
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uint8_t mmap; /* 1 bit */
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} NXT_PACKED nxt_port_msg_t;
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typedef struct {
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nxt_queue_link_t link;
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nxt_buf_t *buf;
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size_t share;
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nxt_fd_t fd;
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nxt_port_msg_t port_msg;
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nxt_work_t work;
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nxt_event_engine_t *engine;
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nxt_mp_t *mem_pool;
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} nxt_port_send_msg_t;
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struct nxt_port_recv_msg_s {
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nxt_fd_t fd;
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nxt_buf_t *buf;
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nxt_port_t *port;
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nxt_port_msg_t port_msg;
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size_t size;
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nxt_port_t *new_port;
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};
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typedef struct nxt_app_s nxt_app_t;
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struct nxt_port_s {
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nxt_fd_event_t socket;
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nxt_queue_link_t link; /* for nxt_process_t.ports */
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nxt_process_t *process;
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nxt_queue_link_t app_link; /* for nxt_app_t.ports */
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nxt_app_t *app;
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nxt_queue_t messages; /* of nxt_port_send_msg_t */
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/* Maximum size of message part. */
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uint32_t max_size;
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/* Maximum interleave of message parts. */
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uint32_t max_share;
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nxt_port_handler_t handler;
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nxt_port_handler_t *data;
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nxt_mp_t *mem_pool;
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nxt_event_engine_t *engine;
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nxt_buf_t *free_bufs;
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nxt_socket_t pair[2];
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nxt_port_id_t id;
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nxt_pid_t pid;
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nxt_process_type_t type;
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nxt_work_t work;
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};
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typedef struct {
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nxt_port_id_t id;
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nxt_pid_t pid;
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size_t max_size;
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size_t max_share;
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nxt_process_type_t type:8;
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} NXT_PACKED nxt_port_msg_new_port_t;
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/*
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* nxt_port_data_t size is allocation size
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* which enables effective reuse of memory pool cache.
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*/
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typedef union {
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nxt_buf_t buf;
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nxt_port_msg_new_port_t new_port;
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} nxt_port_data_t;
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nxt_port_t *nxt_port_new(nxt_port_id_t id, nxt_pid_t pid,
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nxt_process_type_t type);
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nxt_bool_t nxt_port_release(nxt_port_t *port);
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nxt_port_id_t nxt_port_get_next_id(void);
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void nxt_port_reset_next_id(void);
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nxt_int_t nxt_port_socket_init(nxt_task_t *task, nxt_port_t *port,
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size_t max_size);
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void nxt_port_destroy(nxt_port_t *port);
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void nxt_port_write_enable(nxt_task_t *task, nxt_port_t *port);
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void nxt_port_write_close(nxt_port_t *port);
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void nxt_port_read_enable(nxt_task_t *task, nxt_port_t *port);
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void nxt_port_read_close(nxt_port_t *port);
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nxt_int_t nxt_port_socket_write(nxt_task_t *task, nxt_port_t *port,
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nxt_uint_t type, nxt_fd_t fd, uint32_t stream, nxt_port_id_t reply_port,
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nxt_buf_t *b);
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void nxt_port_enable(nxt_task_t *task, nxt_port_t *port,
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nxt_port_handler_t *handlers);
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void nxt_port_write(nxt_task_t *task, nxt_runtime_t *rt, nxt_uint_t type,
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nxt_fd_t fd, uint32_t stream, nxt_buf_t *b);
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void nxt_port_send_new_port(nxt_task_t *task, nxt_runtime_t *rt,
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nxt_port_t *port, uint32_t stream);
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nxt_int_t nxt_port_send_port(nxt_task_t *task, nxt_port_t *port,
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nxt_port_t *new_port, uint32_t stream);
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void nxt_port_change_log_file(nxt_task_t *task, nxt_runtime_t *rt,
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nxt_uint_t slot, nxt_fd_t fd);
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void nxt_port_quit_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg);
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void nxt_port_new_port_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg);
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void nxt_port_ready_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg);
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void nxt_port_change_log_file_handler(nxt_task_t *task,
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nxt_port_recv_msg_t *msg);
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void nxt_port_mmap_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg);
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void nxt_port_data_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg);
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void nxt_port_remove_pid_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg);
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void nxt_port_empty_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg);
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#endif /* _NXT_PORT_H_INCLUDED_ */
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