view auto/include @ 7374:de50fa05fbeb

Cache: fixed minimum cache keys zone size limit. Size of a shared memory zones must be at least two pages - one page for slab allocator internal data, and another page for actual allocations. Using 8192 instead is wrong, as there are systems with page sizes other than 4096. Note well that two pages is usually too low as well. In particular, cache is likely to use two allocations of different sizes for global structures, and at least four pages will be needed to properly allocate cache nodes. Except in a few very special cases, with keys zone of just two pages nginx won't be able to start. Other uses of shared memory impose a limit of 8 pages, which provides some room for global allocations. This patch doesn't try to address this though. Inspired by ticket #1665.
author Maxim Dounin <mdounin@mdounin.ru>
date Wed, 31 Oct 2018 16:49:39 +0300
parents a616bdc38645
children
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# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


echo $ngx_n "checking for $ngx_include ...$ngx_c"

cat << END >> $NGX_AUTOCONF_ERR

----------------------------------------
checking for $ngx_include

END


ngx_found=no

cat << END > $NGX_AUTOTEST.c

$NGX_INCLUDE_SYS_PARAM_H
#include <$ngx_include>

int main(void) {
    return 0;
}

END


ngx_test="$CC -o $NGX_AUTOTEST $NGX_AUTOTEST.c"

eval "$ngx_test >> $NGX_AUTOCONF_ERR 2>&1"

if [ -x $NGX_AUTOTEST ]; then

    ngx_found=yes

    echo " found"

    ngx_name=`echo $ngx_include \
              | tr abcdefghijklmnopqrstuvwxyz/. ABCDEFGHIJKLMNOPQRSTUVWXYZ__`


    have=NGX_HAVE_$ngx_name . auto/have_headers

    eval "NGX_INCLUDE_$ngx_name='#include <$ngx_include>'"

else
    echo " not found"

    echo "----------"    >> $NGX_AUTOCONF_ERR
    cat $NGX_AUTOTEST.c  >> $NGX_AUTOCONF_ERR
    echo "----------"    >> $NGX_AUTOCONF_ERR
    echo $ngx_test       >> $NGX_AUTOCONF_ERR
    echo "----------"    >> $NGX_AUTOCONF_ERR
fi

rm -rf $NGX_AUTOTEST*