mirror of
https://github.com/tmate-io/tmate.git
synced 2024-11-30 20:14:14 +01:00
150fba5ecd
Enclose repeated buffer draining code in a new msgbuf_drain() function, which is additionally exported for use by others. From nicm@, who reminded me that tmux is now using buffer.c, too.
111 lines
3.0 KiB
C
111 lines
3.0 KiB
C
/* $Id: imsg.h,v 1.4 2009-09-15 23:59:40 tcunha Exp $ */
|
|
/* $OpenBSD: imsg.h,v 1.2 2009/09/15 18:12:51 jacekm Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2006, 2007 Pierre-Yves Ritschard <pyr@openbsd.org>
|
|
* Copyright (c) 2006, 2007, 2008 Reyk Floeter <reyk@openbsd.org>
|
|
* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#include "tmux.h"
|
|
|
|
#define READ_BUF_SIZE 65535
|
|
#define IMSG_HEADER_SIZE sizeof(struct imsg_hdr)
|
|
#define MAX_IMSGSIZE 16384
|
|
|
|
struct buf {
|
|
TAILQ_ENTRY(buf) entry;
|
|
u_char *buf;
|
|
size_t size;
|
|
size_t max;
|
|
size_t wpos;
|
|
size_t rpos;
|
|
int fd;
|
|
};
|
|
|
|
struct msgbuf {
|
|
TAILQ_HEAD(, buf) bufs;
|
|
u_int32_t queued;
|
|
int fd;
|
|
};
|
|
|
|
struct buf_read {
|
|
u_char buf[READ_BUF_SIZE];
|
|
u_char *rptr;
|
|
size_t wpos;
|
|
};
|
|
|
|
struct imsg_fd {
|
|
TAILQ_ENTRY(imsg_fd) entry;
|
|
int fd;
|
|
};
|
|
|
|
struct imsgbuf {
|
|
TAILQ_HEAD(, imsg_fd) fds;
|
|
struct buf_read r;
|
|
struct msgbuf w;
|
|
int fd;
|
|
pid_t pid;
|
|
};
|
|
|
|
#define IMSGF_HASFD 1
|
|
|
|
struct imsg_hdr {
|
|
u_int32_t type;
|
|
u_int16_t len;
|
|
u_int16_t flags;
|
|
u_int32_t peerid;
|
|
u_int32_t pid;
|
|
};
|
|
|
|
struct imsg {
|
|
struct imsg_hdr hdr;
|
|
int fd;
|
|
void *data;
|
|
};
|
|
|
|
|
|
/* buffer.c */
|
|
struct buf *buf_open(size_t);
|
|
struct buf *buf_dynamic(size_t, size_t);
|
|
int buf_add(struct buf *, const void *, size_t);
|
|
void *buf_reserve(struct buf *, size_t);
|
|
void *buf_seek(struct buf *, size_t, size_t);
|
|
size_t buf_size(struct buf *);
|
|
size_t buf_left(struct buf *);
|
|
void buf_close(struct msgbuf *, struct buf *);
|
|
int buf_write(struct msgbuf *);
|
|
void buf_free(struct buf *);
|
|
void msgbuf_init(struct msgbuf *);
|
|
void msgbuf_clear(struct msgbuf *);
|
|
int msgbuf_write(struct msgbuf *);
|
|
void msgbuf_drain(struct msgbuf *, size_t);
|
|
|
|
/* imsg.c */
|
|
void imsg_init(struct imsgbuf *, int);
|
|
ssize_t imsg_read(struct imsgbuf *);
|
|
ssize_t imsg_get(struct imsgbuf *, struct imsg *);
|
|
int imsg_compose(struct imsgbuf *, u_int32_t, u_int32_t, pid_t,
|
|
int, void *, u_int16_t);
|
|
int imsg_composev(struct imsgbuf *, u_int32_t, u_int32_t, pid_t,
|
|
int, const struct iovec *, int);
|
|
struct buf *imsg_create(struct imsgbuf *, u_int32_t, u_int32_t, pid_t,
|
|
u_int16_t);
|
|
int imsg_add(struct buf *, void *, u_int16_t);
|
|
void imsg_close(struct imsgbuf *, struct buf *);
|
|
void imsg_free(struct imsg *);
|
|
int imsg_flush(struct imsgbuf *);
|
|
void imsg_clear(struct imsgbuf *);
|