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#ifndef _NGX_LOG_H_INCLUDED_
#define _NGX_LOG_H_INCLUDED_
#include <ngx_errno.h>
typedef enum {
NGX_LOG_EMERG = 0,
NGX_LOG_ALERT,
NGX_LOG_CRIT,
NGX_LOG_ERR,
NGX_LOG_WARN,
NGX_LOG_NOTICE,
NGX_LOG_INFO,
NGX_LOG_DEBUG
} ngx_log_e;
/*
"... while ", action = "reading client request headers"
"... while reading client request headers"
"... while ", action = "reading client request headers"
context: pop3 user account
"... while reading client command for 'john_doe'"
*/
typedef struct {
int log_level;
char *action;
char *context;
/* char *func(ngx_log_t *log); */
} ngx_log_t;
#define MAX_ERROR_STR 2048
#define _ ,
#if (HAVE_GCC_VARIADIC_MACROS)
#define HAVE_VARIADIC_MACROS 1
#define ngx_log_error(level, log, args...) \
if (log->log_level >= level) ngx_log_error_core(level, log, args)
#ifdef NGX_DEBUG
#define ngx_log_debug(log, args...) \
if (log->log_level == NGX_LOG_DEBUG) \
ngx_log_error_core(NGX_LOG_DEBUG, log, 0, args)
#else
#define ngx_log_debug(log, args...)
#endif
#define ngx_assert(assert, fallback, log, args...) \
if (!(assert)) { \
if (log->log_level >= NGX_LOG_ALERT) \
ngx_log_error_core(NGX_LOG_ALERT, log, 0, args); \
fallback; \
}
void ngx_log_error_core(int level, ngx_log_t *log, ngx_err_t err,
const char *fmt, ...);
#elif (HAVE_C99_VARIADIC_MACROS)
#define HAVE_VARIADIC_MACROS 1
#define ngx_log_error(level, log, ...) \
if (log->log_level >= level) ngx_log_error_core(level, log, __VA_ARGS__)
#ifdef NGX_DEBUG
#define ngx_log_debug(log, ...) \
if (log->log_level == NGX_LOG_DEBUG) \
ngx_log_error_core(NGX_LOG_DEBUG, log, 0, __VA_ARGS__)
#else
#define ngx_log_debug(log, ...)
#endif
#define ngx_assert(assert, fallback, log, ...) \
if (!(assert)) { \
if (log->log_level >= NGX_LOG_ALERT) \
ngx_log_error_core(NGX_LOG_ALERT, log, 0, __VA_ARGS__); \
fallback; \
}
void ngx_log_error_core(int level, ngx_log_t *log, ngx_err_t err,
const char *fmt, ...);
#else /* NO VARIADIC MACROS */
#include <stdarg.h>
#ifdef NGX_DEBUG
#define ngx_log_debug(log, text) \
if (log->log_level == NGX_LOG_DEBUG) \
ngx_log_debug_core(log, text)
#else
#define ngx_log_debug(log, text)
#endif
#define ngx_assert(assert, fallback, log, text) \
if (!(assert)) { \
if (log->log_level >= NGX_LOG_ALERT) \
ngx_assert_core(log, text); \
fallback; \
}
void ngx_log_error(int level, ngx_log_t *log, ngx_err_t err,
const char *fmt, ...);
void ngx_log_error_core(int level, ngx_log_t *log, ngx_err_t err,
const char *fmt, va_list args);
void ngx_log_debug_core(ngx_log_t *log, const char *fmt, ...);
void ngx_assert_core(ngx_log_t *log, const char *fmt, ...);
#endif /* VARIADIC MACROS */
#endif /* _NGX_LOG_H_INCLUDED_ */
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