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Core: error logging rate limiting. With this change, error logging to files can be rate-limited with the "rate=" parameter. The parameter specifies allowed log messages rate to a particular file (per worker), in messages per second (m/s). By default, "rate=1000m/s" is used. Rate limiting is implemented using the "leaky bucket" method, similarly to the limit_req module. Maximum burst size is set to the number of log messages per second for each severity level, so "error" messages are logged even if the rate limit is hit by "info" messages (but not vice versa). When the limit is reached for a particular level, the "too many log messages, limiting" message is logged at this level. If debug logging is enabled, either for the particular log file or for the particular connection, rate limiting is not used.
author Maxim Dounin <mdounin@mdounin.ru>
date Tue, 25 Jun 2024 22:58:56 +0300
parents 325b3042edd6
children
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# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


if [ "$NGX_PLATFORM" != win32 ]; then

    ngx_feature="C compiler"
    ngx_feature_name=
    ngx_feature_run=yes
    ngx_feature_incs=
    ngx_feature_path=
    ngx_feature_libs=
    ngx_feature_test=
    . auto/feature

    if [ $ngx_found = no ]; then
        echo
        echo $0: error: C compiler $CC is not found
        echo
        exit 1
    fi

fi


if [ "$CC" = cl ]; then
    NGX_CC_NAME=msvc
    echo " + using Microsoft Visual C++ compiler"

elif [ "$CC" = wcl386 ]; then
    NGX_CC_NAME=owc
    echo " + using Open Watcom C compiler"

elif [ "$CC" = bcc32 ]; then
    NGX_CC_NAME=bcc
    echo " + using Borland C++ compiler"

elif `$CC -V 2>&1 | grep '^Intel(R) C' >/dev/null 2>&1`; then
    NGX_CC_NAME=icc
    echo " + using Intel C++ compiler"

elif `$CC -v 2>&1 | grep 'gcc version' >/dev/null 2>&1`; then
    NGX_CC_NAME=gcc
    echo " + using GNU C compiler"

elif `$CC -v 2>&1 | grep 'clang version' >/dev/null 2>&1`; then
    NGX_CC_NAME=clang
    echo " + using Clang C compiler"

elif `$CC -v 2>&1 | grep 'LLVM version' >/dev/null 2>&1`; then
    NGX_CC_NAME=clang
    echo " + using Clang C compiler"

elif `$CC -V 2>&1 | grep 'Sun C' >/dev/null 2>&1`; then
    NGX_CC_NAME=sunc
    echo " + using Sun C compiler"

elif `$CC -V 2>&1 | grep '^Compaq C' >/dev/null 2>&1`; then
    NGX_CC_NAME=ccc
    echo " + using Compaq C compiler"

elif `$CC -V 2>&1 | grep '^aCC: ' >/dev/null 2>&1`; then
    NGX_CC_NAME=acc
    echo " + using HP aC++ compiler"

else
    NGX_CC_NAME=unknown

fi