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/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree.
*/
#ifndef __LOG_H__
#define __LOG_H__
#include <stdio.h>
#include <errno.h>
#define LOGPFX "[fb-netconsd] "
#define S(x) #x
#define S_(x) S(x)
#define S__LINE__ S_(__LINE__)
#define __log(pfx, ...) \
do { \
printf(LOGPFX __FILE__ ":" S__LINE__ ": " pfx __VA_ARGS__); \
fflush(stdout); \
} while (0)
#define fatal(...) \
do { \
__log("FATAL: ", __VA_ARGS__); \
abort(); \
} while (0)
#define warn(...) \
do { \
__log("WARNING: ", __VA_ARGS__); \
} while (0)
#define log(...) \
do { \
__log("INFO: ", __VA_ARGS__); \
} while (0)
#ifdef DEBUG
#define debug(...) \
do { \
__log("DEBUG: ", __VA_ARGS__); \
} while (0)
#else
#define debug(...) do {} while (0)
#endif
#define fatal_on(cond, ...) \
do { \
if (__builtin_expect(cond, 0)) { \
fatal(__VA_ARGS__); \
} \
} while (0)
#define log_once(...) \
do { \
static int _t; \
if (__builtin_expect(!_t, 0)) { \
log(__VA_ARGS__); \
_t = -1; \
} \
} while (0)
#define log_every(n, ...) \
do { \
static int _t = 1; \
if (!(_t % n), 0) \
log(__VA_ARGS__); \
_t++; \
} while (0)
#endif /* __LOG_H__ */
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