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wernermisc/fakefile/comm.h

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/*
* comm.h - Fakefile IPC functions
*
* Copyright 2012 by Werner Almesberger
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef COMM_H
#define COMM_H
#include <sys/types.h>
#define FAKEFILE_MASTER_OUT_VAR "FAKEFILE_MASTER_OUT"
#define FAKEFILE_MASTER_IN_VAR "FAKEFILE_MASTER_IN"
struct fakefile_peer;
struct fakefile_msg;
struct fakefile_peer *fakefile_peer(int in, int out);
void fakefile_peer_close(struct fakefile_peer *peer);
int fakefile_peer_fd(const struct fakefile_peer *peer);
struct fakefile_msg *fakefile_msg_new(struct fakefile_peer *peer,
int size);
struct fakefile_msg *fakefile_msg_recv(struct fakefile_peer *peer);
void fakefile_msg_end(struct fakefile_msg *msg);
void fakefile_msg_add(struct fakefile_msg *msg, const void *buf, size_t len);
void fakefile_msg_get(struct fakefile_msg *msg, void *buf, size_t len);
#define decl_add(type) \
static inline void fakefile_msg_add_##type( \
struct fakefile_msg *msg, type value) \
{ \
fakefile_msg_add(msg, &value, sizeof(value)); \
}
#define decl_get(type) \
static inline type fakefile_msg_get_##type( \
struct fakefile_msg *msg) \
{ \
type value; \
\
fakefile_msg_get(msg, &value, sizeof(value)); \
return value; \
}
#define decl_access(type) decl_add(type) decl_get(type)
decl_access(int)
decl_access(size_t)
decl_access(ssize_t)
#undef decl_add
#undef decl_get
#undef decl_access
#endif /* !COMM_H */