mirror of
https://github.com/nginx/nginx.git
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262 lines
9.4 KiB
C
262 lines
9.4 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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* Copyright (C) Nginx, Inc.
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*/
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#ifndef _NGX_LOG_H_INCLUDED_
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#define _NGX_LOG_H_INCLUDED_
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#include <ngx_config.h>
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#include <ngx_core.h>
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#define NGX_LOG_STDERR 0
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#define NGX_LOG_EMERG 1
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#define NGX_LOG_ALERT 2
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#define NGX_LOG_CRIT 3
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#define NGX_LOG_ERR 4
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#define NGX_LOG_WARN 5
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#define NGX_LOG_NOTICE 6
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#define NGX_LOG_INFO 7
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#define NGX_LOG_DEBUG 8
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#define NGX_LOG_DEBUG_CORE 0x010
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#define NGX_LOG_DEBUG_ALLOC 0x020
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#define NGX_LOG_DEBUG_MUTEX 0x040
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#define NGX_LOG_DEBUG_EVENT 0x080
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#define NGX_LOG_DEBUG_HTTP 0x100
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#define NGX_LOG_DEBUG_MAIL 0x200
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#define NGX_LOG_DEBUG_MYSQL 0x400
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/*
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* do not forget to update debug_levels[] in src/core/ngx_log.c
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* after the adding a new debug level
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*/
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#define NGX_LOG_DEBUG_FIRST NGX_LOG_DEBUG_CORE
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#define NGX_LOG_DEBUG_LAST NGX_LOG_DEBUG_MYSQL
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#define NGX_LOG_DEBUG_CONNECTION 0x80000000
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#define NGX_LOG_DEBUG_ALL 0x7ffffff0
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typedef u_char *(*ngx_log_handler_pt) (ngx_log_t *log, u_char *buf, size_t len);
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typedef void (*ngx_log_writer_pt) (ngx_log_t *log, ngx_uint_t level,
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u_char *buf, size_t len);
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struct ngx_log_s {
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ngx_uint_t log_level;
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ngx_open_file_t *file;
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ngx_atomic_uint_t connection;
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time_t disk_full_time;
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ngx_log_handler_pt handler;
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void *data;
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ngx_log_writer_pt writer;
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void *wdata;
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/*
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* we declare "action" as "char *" because the actions are usually
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* the static strings and in the "u_char *" case we have to override
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* their types all the time
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*/
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char *action;
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ngx_log_t *next;
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};
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#define NGX_MAX_ERROR_STR 2048
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/*********************************/
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#if (NGX_HAVE_C99_VARIADIC_MACROS)
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#define NGX_HAVE_VARIADIC_MACROS 1
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#define ngx_log_error(level, log, ...) \
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if ((log)->log_level >= level) ngx_log_error_core(level, log, __VA_ARGS__)
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void ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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const char *fmt, ...);
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#define ngx_log_debug(level, log, ...) \
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if ((log)->log_level & level) \
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ngx_log_error_core(NGX_LOG_DEBUG, log, __VA_ARGS__)
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/*********************************/
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#elif (NGX_HAVE_GCC_VARIADIC_MACROS)
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#define NGX_HAVE_VARIADIC_MACROS 1
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#define ngx_log_error(level, log, args...) \
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if ((log)->log_level >= level) ngx_log_error_core(level, log, args)
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void ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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const char *fmt, ...);
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#define ngx_log_debug(level, log, args...) \
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if ((log)->log_level & level) \
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ngx_log_error_core(NGX_LOG_DEBUG, log, args)
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/*********************************/
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#else /* NO VARIADIC MACROS */
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#define NGX_HAVE_VARIADIC_MACROS 0
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void ngx_cdecl ngx_log_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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const char *fmt, ...);
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void ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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const char *fmt, va_list args);
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void ngx_cdecl ngx_log_debug_core(ngx_log_t *log, ngx_err_t err,
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const char *fmt, ...);
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#endif /* VARIADIC MACROS */
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/*********************************/
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#if (NGX_DEBUG)
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#if (NGX_HAVE_VARIADIC_MACROS)
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#define ngx_log_debug0(level, log, err, fmt) \
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ngx_log_debug(level, log, err, fmt)
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#define ngx_log_debug1(level, log, err, fmt, arg1) \
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ngx_log_debug(level, log, err, fmt, arg1)
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#define ngx_log_debug2(level, log, err, fmt, arg1, arg2) \
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ngx_log_debug(level, log, err, fmt, arg1, arg2)
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#define ngx_log_debug3(level, log, err, fmt, arg1, arg2, arg3) \
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ngx_log_debug(level, log, err, fmt, arg1, arg2, arg3)
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#define ngx_log_debug4(level, log, err, fmt, arg1, arg2, arg3, arg4) \
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ngx_log_debug(level, log, err, fmt, arg1, arg2, arg3, arg4)
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#define ngx_log_debug5(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5) \
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ngx_log_debug(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5)
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#define ngx_log_debug6(level, log, err, fmt, \
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arg1, arg2, arg3, arg4, arg5, arg6) \
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ngx_log_debug(level, log, err, fmt, \
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arg1, arg2, arg3, arg4, arg5, arg6)
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#define ngx_log_debug7(level, log, err, fmt, \
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arg1, arg2, arg3, arg4, arg5, arg6, arg7) \
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ngx_log_debug(level, log, err, fmt, \
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arg1, arg2, arg3, arg4, arg5, arg6, arg7)
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#define ngx_log_debug8(level, log, err, fmt, \
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arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8) \
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ngx_log_debug(level, log, err, fmt, \
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arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8)
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#else /* NO VARIADIC MACROS */
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#define ngx_log_debug0(level, log, err, fmt) \
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if ((log)->log_level & level) \
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ngx_log_debug_core(log, err, fmt)
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#define ngx_log_debug1(level, log, err, fmt, arg1) \
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if ((log)->log_level & level) \
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ngx_log_debug_core(log, err, fmt, arg1)
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#define ngx_log_debug2(level, log, err, fmt, arg1, arg2) \
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if ((log)->log_level & level) \
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ngx_log_debug_core(log, err, fmt, arg1, arg2)
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#define ngx_log_debug3(level, log, err, fmt, arg1, arg2, arg3) \
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if ((log)->log_level & level) \
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ngx_log_debug_core(log, err, fmt, arg1, arg2, arg3)
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#define ngx_log_debug4(level, log, err, fmt, arg1, arg2, arg3, arg4) \
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if ((log)->log_level & level) \
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ngx_log_debug_core(log, err, fmt, arg1, arg2, arg3, arg4)
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#define ngx_log_debug5(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5) \
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if ((log)->log_level & level) \
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ngx_log_debug_core(log, err, fmt, arg1, arg2, arg3, arg4, arg5)
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#define ngx_log_debug6(level, log, err, fmt, \
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arg1, arg2, arg3, arg4, arg5, arg6) \
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if ((log)->log_level & level) \
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ngx_log_debug_core(log, err, fmt, arg1, arg2, arg3, arg4, arg5, arg6)
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#define ngx_log_debug7(level, log, err, fmt, \
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arg1, arg2, arg3, arg4, arg5, arg6, arg7) \
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if ((log)->log_level & level) \
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ngx_log_debug_core(log, err, fmt, \
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arg1, arg2, arg3, arg4, arg5, arg6, arg7)
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#define ngx_log_debug8(level, log, err, fmt, \
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arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8) \
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if ((log)->log_level & level) \
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ngx_log_debug_core(log, err, fmt, \
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arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8)
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#endif
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#else /* NO NGX_DEBUG */
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#define ngx_log_debug0(level, log, err, fmt)
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#define ngx_log_debug1(level, log, err, fmt, arg1)
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#define ngx_log_debug2(level, log, err, fmt, arg1, arg2)
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#define ngx_log_debug3(level, log, err, fmt, arg1, arg2, arg3)
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#define ngx_log_debug4(level, log, err, fmt, arg1, arg2, arg3, arg4)
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#define ngx_log_debug5(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5)
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#define ngx_log_debug6(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5, arg6)
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#define ngx_log_debug7(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5, \
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arg6, arg7)
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#define ngx_log_debug8(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5, \
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arg6, arg7, arg8)
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#endif
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/*********************************/
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ngx_log_t *ngx_log_init(u_char *prefix);
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void ngx_cdecl ngx_log_abort(ngx_err_t err, const char *fmt, ...);
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void ngx_cdecl ngx_log_stderr(ngx_err_t err, const char *fmt, ...);
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u_char *ngx_log_errno(u_char *buf, u_char *last, ngx_err_t err);
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ngx_int_t ngx_log_open_default(ngx_cycle_t *cycle);
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ngx_int_t ngx_log_redirect_stderr(ngx_cycle_t *cycle);
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ngx_log_t *ngx_log_get_file_log(ngx_log_t *head);
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char *ngx_log_set_log(ngx_conf_t *cf, ngx_log_t **head);
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/*
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* ngx_write_stderr() cannot be implemented as macro, since
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* MSVC does not allow to use #ifdef inside macro parameters.
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*
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* ngx_write_fd() is used instead of ngx_write_console(), since
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* CharToOemBuff() inside ngx_write_console() cannot be used with
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* read only buffer as destination and CharToOemBuff() is not needed
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* for ngx_write_stderr() anyway.
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*/
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static ngx_inline void
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ngx_write_stderr(char *text)
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{
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(void) ngx_write_fd(ngx_stderr, text, ngx_strlen(text));
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}
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extern ngx_module_t ngx_errlog_module;
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extern ngx_uint_t ngx_use_stderr;
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#endif /* _NGX_LOG_H_INCLUDED_ */
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