6532e46465
Two different router threads may send different requests to single application worker. In this case shared memory fds from worker to router will be send over 2 different router ports. These fds will be received and processed by different threads in any order. This patch made possible to add incoming shared memory segments in arbitrary order. Additionally, array and memory pool are no longer used to store segments because of pool's single threaded nature. Custom array-like structure nxt_port_mmaps_t introduced.
55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
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/*
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* Copyright (C) Max Romanov
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* Copyright (C) NGINX, Inc.
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*/
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#ifndef _NXT_PORT_MEMORY_H_INCLUDED_
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#define _NXT_PORT_MEMORY_H_INCLUDED_
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#define PORT_MMAP_MIN_SIZE (3 * sizeof(uint32_t))
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typedef struct nxt_port_mmap_header_s nxt_port_mmap_header_t;
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void nxt_port_mmaps_destroy(nxt_port_mmaps_t *port_mmaps, nxt_bool_t free);
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/*
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* Allocates nxt_but_t structure from port's mem_pool, assigns this buf 'mem'
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* pointers to first available shared mem bucket(s). 'size' used as a hint to
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* acquire several successive buckets if possible.
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*
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* This function assumes that current thread operates the 'port' exclusively.
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*/
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nxt_buf_t *
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nxt_port_mmap_get_buf(nxt_task_t *task, nxt_port_t *port, size_t size);
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nxt_int_t nxt_port_mmap_increase_buf(nxt_task_t *task, nxt_buf_t *b,
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size_t size, size_t min_size);
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nxt_port_mmap_header_t *
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nxt_port_incoming_port_mmap(nxt_task_t *task, nxt_process_t *process,
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nxt_fd_t fd);
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void
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nxt_port_mmap_write(nxt_task_t *task, nxt_port_t *port,
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nxt_port_send_msg_t *msg, nxt_sendbuf_coalesce_t *sb);
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void
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nxt_port_mmap_read(nxt_task_t *task, nxt_port_t *port,
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nxt_port_recv_msg_t *msg);
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enum nxt_port_method_e {
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NXT_PORT_METHOD_ANY = 0,
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NXT_PORT_METHOD_PLAIN,
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NXT_PORT_METHOD_MMAP
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};
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typedef enum nxt_port_method_e nxt_port_method_t;
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nxt_port_method_t
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nxt_port_mmap_get_method(nxt_task_t *task, nxt_port_t *port, nxt_buf_t *b);
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#endif /* _NXT_PORT_MEMORY_H_INCLUDED_ */
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