view auto/types/typedef @ 8781:81d491f0dc8c quic

QUIC: unroll and inline ngx_quic_varint_len()/ngx_quic_build_int(). According to profiling, those two are among most frequently called, so inlining is generally useful, and unrolling should help with it. Further, this fixes undefined behaviour seen with invalid values. Inspired by Yu Liu.
author Sergey Kandaurov <pluknet@nginx.com>
date Sat, 22 May 2021 18:40:45 +0300
parents e3faa5fb7772
children
line wrap: on
line source


# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


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

cat << END >> $NGX_AUTOCONF_ERR

----------------------------------------
checking for $ngx_type

END

ngx_found=no

for ngx_try in $ngx_type $ngx_types
do

    cat << END > $NGX_AUTOTEST.c

#include <sys/types.h>
#include <signal.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <netinet/in.h>
$NGX_INCLUDE_INTTYPES_H

int main(void) {
    $ngx_try i = 0;
    return (int) i;
}

END

    ngx_test="$CC $CC_TEST_FLAGS $CC_AUX_FLAGS \
              -o $NGX_AUTOTEST $NGX_AUTOTEST.c $NGX_LD_OPT $ngx_feature_libs"

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

    if [ -x $NGX_AUTOTEST ]; then
        if [ $ngx_try = $ngx_type ]; then
            echo " found"
            ngx_found=yes
        else
            echo ", $ngx_try used"
            ngx_found=$ngx_try
        fi
    fi

    if [ $ngx_found = no ]; then
        if [ $ngx_try = $ngx_type ]; then
            echo $ngx_n " $ngx_try not found$ngx_c"
        else
            echo $ngx_n ", $ngx_try not found$ngx_c"
        fi

        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*

    if [ $ngx_found != no ]; then
        break
    fi
done

if [ $ngx_found = no ]; then
    echo
    echo "$0: error: can not define $ngx_type"

    exit 1
fi

if [ $ngx_found != yes ]; then
    echo "typedef $ngx_found  $ngx_type;"   >> $NGX_AUTO_CONFIG_H
fi