view auto/lib/google-perftools/conf @ 6422:768e287a6f36

Fixed sendfile in threads (or with aio preload) and subrequests. If sendfile in threads is used, it is possible that multiple subrequests will trigger multiple ngx_linux_sendfile_thread() calls, as operations are only serialized in output chain based on r->aio, that is, on subrequest level. This resulted in "task #N already active" alerts, in particular, when running proxy_store.t with "aio threads; sendfile on;". Fix is to tolerate duplicate calls, with an additional safety check that the file is the same as previously used. The same problem also affects "aio on; sendfile on;" on FreeBSD (previously known as "aio sendfile;"), where aio->preload_handler() could be called multiple times due to similar reasons, resulting in "second aio post" alerts. Fix is the same as well. It is also believed that similar problems can arise if a filter calls the next body filter multiple times for some reason. These are mostly theoretical though.
author Maxim Dounin <mdounin@mdounin.ru>
date Thu, 03 Mar 2016 21:14:12 +0300
parents 0e1491139947
children f7e79596baf2
line wrap: on
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# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


    ngx_feature="Google perftools"
    ngx_feature_name=
    ngx_feature_run=no
    ngx_feature_incs=
    ngx_feature_path=
    ngx_feature_libs="-lprofiler"
    ngx_feature_test="ProfilerStop()"
    . auto/feature


if [ $ngx_found = no ]; then

    # FreeBSD port

    ngx_feature="Google perftools in /usr/local/"

    if [ $NGX_RPATH = YES ]; then
        ngx_feature_libs="-R/usr/local/lib -L/usr/local/lib -lprofiler"
    else
        ngx_feature_libs="-L/usr/local/lib -lprofiler"
    fi

    . auto/feature
fi


if [ $ngx_found = no ]; then

    # MacPorts

    ngx_feature="Google perftools in /opt/local/"

    if [ $NGX_RPATH = YES ]; then
        ngx_feature_libs="-R/opt/local/lib -L/opt/local/lib -lprofiler"
    else
        ngx_feature_libs="-L/opt/local/lib -lprofiler"
    fi

    . auto/feature
fi


if [ $ngx_found = yes ]; then
    CORE_LIBS="$CORE_LIBS $ngx_feature_libs"

else

cat << END

$0: error: the Google perftools module requires the Google perftools
library. You can either do not enable the module or install the library.

END

    exit 1
fi