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Initial version.

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This commit is contained in:
Igor Sysoev
2017-01-17 20:00:00 +03:00
commit 16cbf3c076
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126
src/nxt_log.h Normal file
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/*
* Copyright (C) Igor Sysoev
* Copyright (C) NGINX, Inc.
*/
#ifndef _NXT_LOG_H_INCLUDED_
#define _NXT_LOG_H_INCLUDED_
#define NXT_LOG_EMERG 0
#define NXT_LOG_ALERT 1
#define NXT_LOG_CRIT 2
#define NXT_LOG_ERR 3
#define NXT_LOG_WARN 4
#define NXT_LOG_NOTICE 5
#define NXT_LOG_INFO 6
#define NXT_LOG_DEBUG 7
#define NXT_MAX_ERROR_STR 2048
typedef void nxt_cdecl (*nxt_log_handler_t)(nxt_uint_t level, nxt_log_t *log,
const char *fmt, ...);
typedef u_char *(*nxt_log_ctx_handler_t)(void *ctx, u_char *pos, u_char *end);
struct nxt_log_s {
uint32_t level;
uint32_t ident;
nxt_log_handler_t handler;
nxt_log_ctx_handler_t ctx_handler;
void *ctx;
};
NXT_EXPORT void nxt_log_start(const char *name);
NXT_EXPORT nxt_log_t *nxt_log_set_ctx(nxt_log_t *log,
nxt_log_ctx_handler_t handler, void *ctx);
NXT_EXPORT void nxt_cdecl nxt_log_handler(nxt_uint_t level, nxt_log_t *log,
const char *fmt, ...);
#define \
nxt_log_level_enough(log, level) \
((log)->level >= (level))
#define \
nxt_log_emerg(_log, ...) \
do { \
nxt_log_t *_log_ = (_log); \
\
_log_->handler(NXT_LOG_EMERG, _log_, __VA_ARGS__); \
} while (0)
#define \
nxt_log_alert(_log, ...) \
do { \
nxt_log_t *_log_ = (_log); \
\
_log_->handler(NXT_LOG_ALERT, _log_, __VA_ARGS__); \
} while (0)
#define \
nxt_log_error(_level, _log, ...) \
do { \
nxt_log_t *_log_ = (_log); \
nxt_uint_t _level_ = (_level); \
\
if (nxt_slow_path(_log_->level >= _level_)) { \
_log_->handler(_level_, _log_, __VA_ARGS__); \
} \
} while (0)
#if (NXT_DEBUG)
#define \
nxt_log_debug(_log, ...) \
do { \
nxt_log_t *_log_ = (_log); \
\
if (nxt_slow_path(_log_->level == NXT_LOG_DEBUG || nxt_debug)) { \
_log_->handler(NXT_LOG_DEBUG, _log_, __VA_ARGS__); \
} \
} while (0)
#else
#define \
nxt_log_debug(...)
#endif
#define \
nxt_main_log_emerg(...) \
nxt_log_emerg(&nxt_main_log, __VA_ARGS__)
#define \
nxt_main_log_alert(...) \
nxt_log_alert(&nxt_main_log, __VA_ARGS__)
#define \
nxt_main_log_error(level, ...) \
nxt_log_error(level, &nxt_main_log, __VA_ARGS__)
#define \
nxt_main_log_debug(...) \
nxt_log_debug(&nxt_main_log, __VA_ARGS__)
NXT_EXPORT extern nxt_uint_t nxt_debug;
NXT_EXPORT extern nxt_log_t nxt_main_log;
NXT_EXPORT extern nxt_str_t nxt_log_levels[];
#endif /* _NXT_LOG_H_INCLUDED_ */