1 2 /* 3 * Copyright (C) Max Romanov 4 * Copyright (C) NGINX, Inc. 5 */ 6 7 #ifndef _NXT_PORT_MEMORY_H_INCLUDED_ 8 #define _NXT_PORT_MEMORY_H_INCLUDED_ 9 10 11 #define PORT_MMAP_MIN_SIZE (3 * sizeof(uint32_t)) 12 13 typedef struct nxt_port_mmap_header_s nxt_port_mmap_header_t; 14 typedef struct nxt_port_mmap_handler_s nxt_port_mmap_handler_t; 15 16 void nxt_port_mmaps_destroy(nxt_port_mmaps_t *port_mmaps, nxt_bool_t free_elts); 17 18 typedef struct nxt_port_mmap_tracking_s nxt_port_mmap_tracking_t; 19 20 struct nxt_port_mmap_tracking_s { 21 void *mmap_handler; 22 nxt_atomic_t *tracking; 23 }; 24 25 nxt_int_t 26 nxt_port_mmap_get_tracking(nxt_task_t *task, nxt_port_mmaps_t *mmaps, 27 nxt_port_mmap_tracking_t *tracking, uint32_t stream); 28 29 nxt_bool_t 30 nxt_port_mmap_tracking_cancel(nxt_task_t *task, 31 nxt_port_mmap_tracking_t *tracking, uint32_t stream); 32 33 nxt_int_t 34 nxt_port_mmap_tracking_write(uint32_t *buf, nxt_port_mmap_tracking_t *t); 35 36 nxt_bool_t 37 nxt_port_mmap_tracking_read(nxt_task_t *task, nxt_port_recv_msg_t *msg); 38 39 /* 40 * Allocates nxt_but_t structure from task's thread engine mem_pool, assigns 41 * this buf 'mem' pointers to first available shared mem bucket(s). 'size' 42 * used as a hint to acquire several successive buckets if possible. 43 */ 44 nxt_buf_t * 45 nxt_port_mmap_get_buf(nxt_task_t *task, nxt_port_mmaps_t *mmaps, size_t size); 46 47 nxt_int_t nxt_port_mmap_increase_buf(nxt_task_t *task, nxt_buf_t *b, 48 size_t size, size_t min_size); 49 50 nxt_port_mmap_handler_t * 51 nxt_port_incoming_port_mmap(nxt_task_t *task, nxt_process_t *process, 52 nxt_fd_t fd); 53 54 void 55 nxt_port_mmap_write(nxt_task_t *task, nxt_port_t *port, 56 nxt_port_send_msg_t *msg, nxt_sendbuf_coalesce_t *sb, void *mmsg_buf); 57 58 void 59 nxt_port_mmap_read(nxt_task_t *task, nxt_port_recv_msg_t *msg); 60 61 enum nxt_port_method_e { 62 NXT_PORT_METHOD_ANY = 0, 63 NXT_PORT_METHOD_PLAIN, 64 NXT_PORT_METHOD_MMAP 65 }; 66 67 typedef enum nxt_port_method_e nxt_port_method_t; 68 69 nxt_port_method_t 70 nxt_port_mmap_get_method(nxt_task_t *task, nxt_port_t *port, nxt_buf_t *b); 71 72 nxt_int_t nxt_shm_open(nxt_task_t *task, size_t size); 73 74 void nxt_process_broadcast_shm_ack(nxt_task_t *task, nxt_process_t *process); 75 76 #endif /* _NXT_PORT_MEMORY_H_INCLUDED_ */ 77