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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #ifndef _NGX_LOG_H_INCLUDED_
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8 #define _NGX_LOG_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13
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14
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15 #define NGX_LOG_STDERR 0
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16 #define NGX_LOG_EMERG 1
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17 #define NGX_LOG_ALERT 2
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18 #define NGX_LOG_CRIT 3
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19 #define NGX_LOG_ERR 4
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20 #define NGX_LOG_WARN 5
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21 #define NGX_LOG_NOTICE 6
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22 #define NGX_LOG_INFO 7
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23 #define NGX_LOG_DEBUG 8
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24
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25 #define NGX_LOG_DEBUG_CORE 0x010
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26 #define NGX_LOG_DEBUG_ALLOC 0x020
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27 #define NGX_LOG_DEBUG_MUTEX 0x040
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28 #define NGX_LOG_DEBUG_EVENT 0x080
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29 #define NGX_LOG_DEBUG_HTTP 0x100
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30 #define NGX_LOG_DEBUG_IMAP 0x200
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31
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32 /*
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33 * do not forget to update debug_levels[] in src/core/ngx_log.c
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34 * after the adding a new debug level
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35 */
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36
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37 #define NGX_LOG_DEBUG_FIRST NGX_LOG_DEBUG_CORE
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38 #define NGX_LOG_DEBUG_LAST NGX_LOG_DEBUG_IMAP
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39 #define NGX_LOG_DEBUG_CONNECTION 0x80000000
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40 #define NGX_LOG_DEBUG_ALL 0x7ffffff0
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41
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42
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32
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43 typedef u_char *(*ngx_log_handler_pt) (ngx_log_t *log, u_char *buf, size_t len);
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0
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44
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45
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46 struct ngx_log_s {
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47 ngx_uint_t log_level;
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48 ngx_open_file_t *file;
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32
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49
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42
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50 ngx_atomic_int_t connection;
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32
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51
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52 ngx_log_handler_pt handler;
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0
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53 void *data;
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32
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54
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55 /*
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56 * we declare "action" as "char *" because the actions are usually
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57 * the static strings and in the "u_char *" case we have to override
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58 * their types all the time
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59 */
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60
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61 char *action;
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0
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62 };
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63
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10
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64
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65 #define NGX_MAX_ERROR_STR 2048
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0
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66
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67
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68 /*********************************/
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69
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4
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70 #if (NGX_HAVE_GCC_VARIADIC_MACROS)
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0
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71
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4
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72 #define NGX_HAVE_VARIADIC_MACROS 1
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73
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32
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74 #define ngx_log_error(level, log, args...) \
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75 if (log->log_level >= level) ngx_log_error_core(level, log, args)
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76
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77 void ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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78 const char *fmt, ...);
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79
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32
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80 #define ngx_log_debug(level, log, args...) \
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81 if (log->log_level & level) \
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82 ngx_log_error_core(NGX_LOG_DEBUG, log, args)
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83
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0
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84 /*********************************/
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85
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4
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86 #elif (NGX_HAVE_C99_VARIADIC_MACROS)
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0
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87
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4
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88 #define NGX_HAVE_VARIADIC_MACROS 1
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89
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32
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90 #define ngx_log_error(level, log, ...) \
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91 if (log->log_level >= level) ngx_log_error_core(level, log, __VA_ARGS__)
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92
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93 void ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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94 const char *fmt, ...);
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95
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32
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96 #define ngx_log_debug(level, log, ...) \
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97 if (log->log_level & level) \
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98 ngx_log_error_core(NGX_LOG_DEBUG, log, __VA_ARGS__)
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99
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100 /*********************************/
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101
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102 #else /* NO VARIADIC MACROS */
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103
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4
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104 #define NGX_HAVE_VARIADIC_MACROS 0
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105
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106 void ngx_log_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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107 const char *fmt, ...);
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108 void ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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109 const char *fmt, va_list args);
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110 void ngx_log_debug_core(ngx_log_t *log, ngx_err_t err, const char *fmt, ...);
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111
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112
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113 #endif /* VARIADIC MACROS */
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114
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115
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116 /*********************************/
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117
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118 #if (NGX_DEBUG)
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119
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4
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120 #if (NGX_HAVE_VARIADIC_MACROS)
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121
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32
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122 #define ngx_log_debug0 ngx_log_debug
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123 #define ngx_log_debug1 ngx_log_debug
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124 #define ngx_log_debug2 ngx_log_debug
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125 #define ngx_log_debug3 ngx_log_debug
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126 #define ngx_log_debug4 ngx_log_debug
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127 #define ngx_log_debug5 ngx_log_debug
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128 #define ngx_log_debug6 ngx_log_debug
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129 #define ngx_log_debug7 ngx_log_debug
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130 #define ngx_log_debug8 ngx_log_debug
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131
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132 #else /* NO VARIADIC MACROS */
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133
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32
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134 #define ngx_log_debug0(level, log, err, fmt) \
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135 if (log->log_level & level) \
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136 ngx_log_debug_core(log, err, fmt)
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137
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32
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138 #define ngx_log_debug1(level, log, err, fmt, arg1) \
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139 if (log->log_level & level) \
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140 ngx_log_debug_core(log, err, fmt, arg1)
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141
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32
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142 #define ngx_log_debug2(level, log, err, fmt, arg1, arg2) \
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143 if (log->log_level & level) \
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144 ngx_log_debug_core(log, err, fmt, arg1, arg2)
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145
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32
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146 #define ngx_log_debug3(level, log, err, fmt, arg1, arg2, arg3) \
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147 if (log->log_level & level) \
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0
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148 ngx_log_debug_core(log, err, fmt, arg1, arg2, arg3)
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149
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32
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150 #define ngx_log_debug4(level, log, err, fmt, arg1, arg2, arg3, arg4) \
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151 if (log->log_level & level) \
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152 ngx_log_debug_core(log, err, fmt, arg1, arg2, arg3, arg4)
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153
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32
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154 #define ngx_log_debug5(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5) \
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155 if (log->log_level & level) \
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156 ngx_log_debug_core(log, err, fmt, arg1, arg2, arg3, arg4, arg5)
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157
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32
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158 #define ngx_log_debug6(level, log, err, fmt, \
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159 arg1, arg2, arg3, arg4, arg5, arg6) \
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160 if (log->log_level & level) \
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161 ngx_log_debug_core(log, err, fmt, arg1, arg2, arg3, arg4, arg5, arg6)
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162
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32
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163 #define ngx_log_debug7(level, log, err, fmt, \
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164 arg1, arg2, arg3, arg4, arg5, arg6, arg7) \
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165 if (log->log_level & level) \
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166 ngx_log_debug_core(log, err, fmt, \
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167 arg1, arg2, arg3, arg4, arg5, arg6, arg7)
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168
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32
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169 #define ngx_log_debug8(level, log, err, fmt, \
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170 arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8) \
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171 if (log->log_level & level) \
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172 ngx_log_debug_core(log, err, fmt, \
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173 arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8)
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174
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175 #endif
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176
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177 #else /* NO NGX_DEBUG */
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178
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179 #define ngx_log_debug0(level, log, err, fmt)
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180 #define ngx_log_debug1(level, log, err, fmt, arg1)
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181 #define ngx_log_debug2(level, log, err, fmt, arg1, arg2)
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182 #define ngx_log_debug3(level, log, err, fmt, arg1, arg2, arg3)
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183 #define ngx_log_debug4(level, log, err, fmt, arg1, arg2, arg3, arg4)
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184 #define ngx_log_debug5(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5)
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185 #define ngx_log_debug6(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5, arg6)
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186 #define ngx_log_debug7(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5, \
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187 arg6, arg7)
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188 #define ngx_log_debug8(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5, \
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189 arg6, arg7, arg8)
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190
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191 #endif
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192
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193 /*********************************/
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194
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195 #define ngx_log_alloc_log(pool, log) ngx_palloc(pool, log, sizeof(ngx_log_t))
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196 #define ngx_log_copy_log(new, old) ngx_memcpy(new, old, sizeof(ngx_log_t))
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197
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198 ngx_log_t *ngx_log_init();
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199 ngx_log_t *ngx_log_create_errlog(ngx_cycle_t *cycle, ngx_array_t *args);
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200 char *ngx_set_error_log_levels(ngx_conf_t *cf, ngx_log_t *log);
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201
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202
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203
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204 extern ngx_module_t ngx_errlog_module;
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205
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206
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207 #endif /* _NGX_LOG_H_INCLUDED_ */
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