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/*
* Copyright (C) Igor Sysoev
* Copyright (C) NGINX, Inc.
*/
#ifndef _NXT_UNIX_CHAN_H_INCLUDED_
#define _NXT_UNIX_CHAN_H_INCLUDED_
typedef struct {
uint32_t stream;
uint16_t type;
uint8_t last; /* 1 bit */
} nxt_chan_msg_t;
typedef struct {
nxt_queue_link_t link;
nxt_buf_t *buf;
size_t share;
nxt_fd_t fd;
nxt_chan_msg_t chan_msg;
} nxt_chan_send_msg_t;
typedef struct nxt_chan_recv_msg_s nxt_chan_recv_msg_t;
typedef void (*nxt_chan_handler_t)(nxt_thread_t *thr, nxt_chan_recv_msg_t *msg);
typedef struct {
/* Must be the first field. */
nxt_event_fd_t socket;
nxt_queue_t messages; /* of nxt_chan_send_msg_t */
/* Maximum size of message part. */
uint32_t max_size;
/* Maximum interleave of message parts. */
uint32_t max_share;
nxt_chan_handler_t handler;
void *data;
nxt_mem_pool_t *mem_pool;
nxt_buf_t *free_bufs;
nxt_socket_t pair[2];
} nxt_chan_t;
struct nxt_chan_recv_msg_s {
uint32_t stream;
uint16_t type;
nxt_fd_t fd;
nxt_buf_t *buf;
nxt_chan_t *chan;
};
NXT_EXPORT nxt_chan_t *nxt_chan_alloc(void);
NXT_EXPORT nxt_chan_t *nxt_chan_create(size_t bufsize);
NXT_EXPORT void nxt_chan_destroy(nxt_chan_t *chan);
NXT_EXPORT void nxt_chan_write_enable(nxt_thread_t *thr, nxt_chan_t *chan);
NXT_EXPORT void nxt_chan_write_close(nxt_chan_t *chan);
NXT_EXPORT void nxt_chan_read_enable(nxt_thread_t *thr, nxt_chan_t *chan);
NXT_EXPORT void nxt_chan_read_close(nxt_chan_t *chan);
NXT_EXPORT nxt_int_t nxt_chan_write(nxt_chan_t *chan, nxt_uint_t type,
nxt_fd_t fd, uint32_t stream, nxt_buf_t *b);
#endif /* _NXT_UNIX_CHAN_H_INCLUDED_ */
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