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view src/core/ngx_config.h @ 9225:1c9264603adc

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Syslog: introduced ngx_syslog_send() error logging moderation. Errors when logging to syslog are now logged at most once per second. This ensures that persistent errors won't flood other logs, and spontaneous errors, such as ENOBUFS as observed on BSD systems when syslogd cannot cope with load, or EAGAIN as seen in similar situation on Linux, won't further overload logging subsystem, leading to more errors. Further, errors now can only trigger reconnects at most once per second. This ensures that persistent errors, which cannot be fixed with reconnects, don't trigger too much unneeded work. Additionally, in case of connection errors, such as when syslogd is not running, connection attempts are only made once per second.
author Maxim Dounin <mdounin@mdounin.ru>
date Fri, 01 Mar 2024 05:42:12 +0300
parents d200a0fd00b7
children
line wrap: on
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_CONFIG_H_INCLUDED_
#define _NGX_CONFIG_H_INCLUDED_


#include <ngx_auto_headers.h>


#if defined __DragonFly__ && !defined __FreeBSD__
#define __FreeBSD__        4
#define __FreeBSD_version  480101
#endif


#if (NGX_FREEBSD)
#include <ngx_freebsd_config.h>


#elif (NGX_LINUX)
#include <ngx_linux_config.h>


#elif (NGX_SOLARIS)
#include <ngx_solaris_config.h>


#elif (NGX_DARWIN)
#include <ngx_darwin_config.h>


#elif (NGX_WIN32)
#include <ngx_win32_config.h>


#else /* POSIX */
#include <ngx_posix_config.h>

#endif


#ifndef NGX_HAVE_SO_SNDLOWAT
#define NGX_HAVE_SO_SNDLOWAT     1
#endif


#if !(NGX_WIN32)

#define ngx_signal_helper(n)     SIG##n
#define ngx_signal_value(n)      ngx_signal_helper(n)

#define ngx_random               random

/* TODO: #ifndef */
#define NGX_SHUTDOWN_SIGNAL      QUIT
#define NGX_TERMINATE_SIGNAL     TERM
#define NGX_NOACCEPT_SIGNAL      WINCH
#define NGX_RECONFIGURE_SIGNAL   HUP

#if (NGX_LINUXTHREADS)
#define NGX_REOPEN_SIGNAL        INFO
#define NGX_CHANGEBIN_SIGNAL     XCPU
#else
#define NGX_REOPEN_SIGNAL        USR1
#define NGX_CHANGEBIN_SIGNAL     USR2
#endif

#define ngx_cdecl
#define ngx_libc_cdecl

#endif

typedef intptr_t        ngx_int_t;
typedef uintptr_t       ngx_uint_t;
typedef intptr_t        ngx_flag_t;


#define NGX_INT32_LEN   (sizeof("-2147483648") - 1)
#define NGX_INT64_LEN   (sizeof("-9223372036854775808") - 1)

#if (NGX_PTR_SIZE == 4)
#define NGX_INT_T_LEN   NGX_INT32_LEN
#define NGX_MAX_INT_T_VALUE  2147483647

#else
#define NGX_INT_T_LEN   NGX_INT64_LEN
#define NGX_MAX_INT_T_VALUE  9223372036854775807
#endif


#ifndef NGX_ALIGNMENT
#define NGX_ALIGNMENT   sizeof(unsigned long)    /* platform word */
#endif

#define ngx_align(d, a)     (((d) + (a - 1)) & ~(a - 1))
#define ngx_align_ptr(p, a)                                                   \
    (u_char *) (((uintptr_t) (p) + ((uintptr_t) a - 1)) & ~((uintptr_t) a - 1))


#define ngx_abort       abort


/* TODO: platform specific: array[NGX_INVALID_ARRAY_INDEX] must cause SIGSEGV */
#define NGX_INVALID_ARRAY_INDEX 0x80000000


/* TODO: auto_conf: ngx_inline   inline __inline __inline__ */
#ifndef ngx_inline
#define ngx_inline      inline
#endif

#ifndef INADDR_NONE  /* Solaris */
#define INADDR_NONE  ((unsigned int) -1)
#endif

#ifdef MAXHOSTNAMELEN
#define NGX_MAXHOSTNAMELEN  MAXHOSTNAMELEN
#else
#define NGX_MAXHOSTNAMELEN  256
#endif


#define NGX_MAX_UINT32_VALUE  (uint32_t) 0xffffffff
#define NGX_MAX_INT32_VALUE   (uint32_t) 0x7fffffff


#if (NGX_COMPAT)

#define NGX_COMPAT_BEGIN(slots)  uint64_t spare[slots];
#define NGX_COMPAT_END

#else

#define NGX_COMPAT_BEGIN(slots)
#define NGX_COMPAT_END

#endif


#endif /* _NGX_CONFIG_H_INCLUDED_ */