Mercurial > hg > nginx-quic
view src/core/ngx_log.h @ 7446:9234e8d61aa0
Win32: detection of connect() errors in select().
On Windows, connect() errors are only reported via exceptfds descriptor set
from select(). Previously exceptfds was set to NULL, and connect() errors
were not detected at all, so connects to closed ports were waiting till
a timeout occurred.
Since ongoing connect() means that there will be a write event active,
except descriptor set is copied from the write one. While it is possible
to construct except descriptor set as a concatenation of both read and write
descriptor sets, this looks unneeded.
With this change, connect() errors are properly detected now when using
select(). Note well that it is not possible to detect connect() errors with
WSAPoll() (see https://daniel.haxx.se/blog/2012/10/10/wsapoll-is-broken/).
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 24 Jan 2019 22:00:44 +0300 |
parents | 4b420f9c4c5d |
children | f18db38a9826 |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_LOG_H_INCLUDED_ #define _NGX_LOG_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #define NGX_LOG_STDERR 0 #define NGX_LOG_EMERG 1 #define NGX_LOG_ALERT 2 #define NGX_LOG_CRIT 3 #define NGX_LOG_ERR 4 #define NGX_LOG_WARN 5 #define NGX_LOG_NOTICE 6 #define NGX_LOG_INFO 7 #define NGX_LOG_DEBUG 8 #define NGX_LOG_DEBUG_CORE 0x010 #define NGX_LOG_DEBUG_ALLOC 0x020 #define NGX_LOG_DEBUG_MUTEX 0x040 #define NGX_LOG_DEBUG_EVENT 0x080 #define NGX_LOG_DEBUG_HTTP 0x100 #define NGX_LOG_DEBUG_MAIL 0x200 #define NGX_LOG_DEBUG_STREAM 0x400 /* * do not forget to update debug_levels[] in src/core/ngx_log.c * after the adding a new debug level */ #define NGX_LOG_DEBUG_FIRST NGX_LOG_DEBUG_CORE #define NGX_LOG_DEBUG_LAST NGX_LOG_DEBUG_STREAM #define NGX_LOG_DEBUG_CONNECTION 0x80000000 #define NGX_LOG_DEBUG_ALL 0x7ffffff0 typedef u_char *(*ngx_log_handler_pt) (ngx_log_t *log, u_char *buf, size_t len); typedef void (*ngx_log_writer_pt) (ngx_log_t *log, ngx_uint_t level, u_char *buf, size_t len); struct ngx_log_s { ngx_uint_t log_level; ngx_open_file_t *file; ngx_atomic_uint_t connection; time_t disk_full_time; ngx_log_handler_pt handler; void *data; ngx_log_writer_pt writer; void *wdata; /* * we declare "action" as "char *" because the actions are usually * the static strings and in the "u_char *" case we have to override * their types all the time */ char *action; ngx_log_t *next; }; #define NGX_MAX_ERROR_STR 2048 /*********************************/ #if (NGX_HAVE_C99_VARIADIC_MACROS) #define NGX_HAVE_VARIADIC_MACROS 1 #define ngx_log_error(level, log, ...) \ if ((log)->log_level >= level) ngx_log_error_core(level, log, __VA_ARGS__) void ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, const char *fmt, ...); #define ngx_log_debug(level, log, ...) \ if ((log)->log_level & level) \ ngx_log_error_core(NGX_LOG_DEBUG, log, __VA_ARGS__) /*********************************/ #elif (NGX_HAVE_GCC_VARIADIC_MACROS) #define NGX_HAVE_VARIADIC_MACROS 1 #define ngx_log_error(level, log, args...) \ if ((log)->log_level >= level) ngx_log_error_core(level, log, args) void ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, const char *fmt, ...); #define ngx_log_debug(level, log, args...) \ if ((log)->log_level & level) \ ngx_log_error_core(NGX_LOG_DEBUG, log, args) /*********************************/ #else /* no variadic macros */ #define NGX_HAVE_VARIADIC_MACROS 0 void ngx_cdecl ngx_log_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, const char *fmt, ...); void ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, const char *fmt, va_list args); void ngx_cdecl ngx_log_debug_core(ngx_log_t *log, ngx_err_t err, const char *fmt, ...); #endif /* variadic macros */ /*********************************/ #if (NGX_DEBUG) #if (NGX_HAVE_VARIADIC_MACROS) #define ngx_log_debug0(level, log, err, fmt) \ ngx_log_debug(level, log, err, fmt) #define ngx_log_debug1(level, log, err, fmt, arg1) \ ngx_log_debug(level, log, err, fmt, arg1) #define ngx_log_debug2(level, log, err, fmt, arg1, arg2) \ ngx_log_debug(level, log, err, fmt, arg1, arg2) #define ngx_log_debug3(level, log, err, fmt, arg1, arg2, arg3) \ ngx_log_debug(level, log, err, fmt, arg1, arg2, arg3) #define ngx_log_debug4(level, log, err, fmt, arg1, arg2, arg3, arg4) \ ngx_log_debug(level, log, err, fmt, arg1, arg2, arg3, arg4) #define ngx_log_debug5(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5) \ ngx_log_debug(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5) #define ngx_log_debug6(level, log, err, fmt, \ arg1, arg2, arg3, arg4, arg5, arg6) \ ngx_log_debug(level, log, err, fmt, \ arg1, arg2, arg3, arg4, arg5, arg6) #define ngx_log_debug7(level, log, err, fmt, \ arg1, arg2, arg3, arg4, arg5, arg6, arg7) \ ngx_log_debug(level, log, err, fmt, \ arg1, arg2, arg3, arg4, arg5, arg6, arg7) #define ngx_log_debug8(level, log, err, fmt, \ arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8) \ ngx_log_debug(level, log, err, fmt, \ arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8) #else /* no variadic macros */ #define ngx_log_debug0(level, log, err, fmt) \ if ((log)->log_level & level) \ ngx_log_debug_core(log, err, fmt) #define ngx_log_debug1(level, log, err, fmt, arg1) \ if ((log)->log_level & level) \ ngx_log_debug_core(log, err, fmt, arg1) #define ngx_log_debug2(level, log, err, fmt, arg1, arg2) \ if ((log)->log_level & level) \ ngx_log_debug_core(log, err, fmt, arg1, arg2) #define ngx_log_debug3(level, log, err, fmt, arg1, arg2, arg3) \ if ((log)->log_level & level) \ ngx_log_debug_core(log, err, fmt, arg1, arg2, arg3) #define ngx_log_debug4(level, log, err, fmt, arg1, arg2, arg3, arg4) \ if ((log)->log_level & level) \ ngx_log_debug_core(log, err, fmt, arg1, arg2, arg3, arg4) #define ngx_log_debug5(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5) \ if ((log)->log_level & level) \ ngx_log_debug_core(log, err, fmt, arg1, arg2, arg3, arg4, arg5) #define ngx_log_debug6(level, log, err, fmt, \ arg1, arg2, arg3, arg4, arg5, arg6) \ if ((log)->log_level & level) \ ngx_log_debug_core(log, err, fmt, arg1, arg2, arg3, arg4, arg5, arg6) #define ngx_log_debug7(level, log, err, fmt, \ arg1, arg2, arg3, arg4, arg5, arg6, arg7) \ if ((log)->log_level & level) \ ngx_log_debug_core(log, err, fmt, \ arg1, arg2, arg3, arg4, arg5, arg6, arg7) #define ngx_log_debug8(level, log, err, fmt, \ arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8) \ if ((log)->log_level & level) \ ngx_log_debug_core(log, err, fmt, \ arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8) #endif #else /* !NGX_DEBUG */ #define ngx_log_debug0(level, log, err, fmt) #define ngx_log_debug1(level, log, err, fmt, arg1) #define ngx_log_debug2(level, log, err, fmt, arg1, arg2) #define ngx_log_debug3(level, log, err, fmt, arg1, arg2, arg3) #define ngx_log_debug4(level, log, err, fmt, arg1, arg2, arg3, arg4) #define ngx_log_debug5(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5) #define ngx_log_debug6(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5, arg6) #define ngx_log_debug7(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5, \ arg6, arg7) #define ngx_log_debug8(level, log, err, fmt, arg1, arg2, arg3, arg4, arg5, \ arg6, arg7, arg8) #endif /*********************************/ ngx_log_t *ngx_log_init(u_char *prefix); void ngx_cdecl ngx_log_abort(ngx_err_t err, const char *fmt, ...); void ngx_cdecl ngx_log_stderr(ngx_err_t err, const char *fmt, ...); u_char *ngx_log_errno(u_char *buf, u_char *last, ngx_err_t err); ngx_int_t ngx_log_open_default(ngx_cycle_t *cycle); ngx_int_t ngx_log_redirect_stderr(ngx_cycle_t *cycle); ngx_log_t *ngx_log_get_file_log(ngx_log_t *head); char *ngx_log_set_log(ngx_conf_t *cf, ngx_log_t **head); /* * ngx_write_stderr() cannot be implemented as macro, since * MSVC does not allow to use #ifdef inside macro parameters. * * ngx_write_fd() is used instead of ngx_write_console(), since * CharToOemBuff() inside ngx_write_console() cannot be used with * read only buffer as destination and CharToOemBuff() is not needed * for ngx_write_stderr() anyway. */ static ngx_inline void ngx_write_stderr(char *text) { (void) ngx_write_fd(ngx_stderr, text, ngx_strlen(text)); } static ngx_inline void ngx_write_stdout(char *text) { (void) ngx_write_fd(ngx_stdout, text, ngx_strlen(text)); } extern ngx_module_t ngx_errlog_module; extern ngx_uint_t ngx_use_stderr; #endif /* _NGX_LOG_H_INCLUDED_ */