view auto/cc/sunc @ 6949:ff0c8e11edbc

Simplified and improved sendfile() code on Linux. The ngx_linux_sendfile() function is now used for both normal sendfile() and sendfile in threads. The ngx_linux_sendfile_thread() function was modified to use the same interface as ngx_linux_sendfile(), and is simply called from ngx_linux_sendfile() when threads are enabled. Special return code NGX_DONE is used to indicate that a thread task was posted and no further actions are needed. If number of bytes sent is less that what we were sending, we now always retry sending. This is needed for sendfile() in threads as the number of bytes we are sending might have been changed since the thread task was posted. And this is also needed for Linux 4.3+, as sendfile() might be interrupted at any time and provides no indication if it was interrupted or not (ticket #1174).
author Maxim Dounin <mdounin@mdounin.ru>
date Tue, 28 Mar 2017 18:15:39 +0300
parents e3faa5fb7772
children d8e8ced78e77
line wrap: on
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# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


# Sun C 5.7 Patch 117837-04 2005/05/11    Sun Studio 10
# Sun C 5.8 2005/10/13                    Sun Studio 11
# Sun C 5.9 SunOS_i386 2007/05/03         Sun Studio 12
# Sun C 5.9 SunOS_sparc 2007/05/03
# Sun C 5.10 SunOS_i386 2009/06/03        Sun Studio 12.1
# Sun C 5.11 SunOS_i386 2010/08/13        Sun Studio 12.2

NGX_SUNC_VER=`$CC -V 2>&1 | grep 'Sun C' 2>&1 \
                          | sed -e 's/^.* Sun C \(.*\)/\1/'`

echo " + Sun C version: $NGX_SUNC_VER"

have=NGX_COMPILER value="\"Sun C $NGX_SUNC_VER\"" . auto/define


cat << END > $NGX_AUTOTEST.c

int main(void) {
    printf("%d", __SUNPRO_C);
    return 0;
}

END

eval "$CC -o $NGX_AUTOTEST $NGX_AUTOTEST.c >> $NGX_ERR 2>&1"

if [ -x $NGX_AUTOTEST ]; then
    ngx_sunc_ver=`$NGX_AUTOTEST`
fi

rm -rf $NGX_AUTOTEST*

# 1424 == 0x590, Sun Studio 12

if [ "$ngx_sunc_ver" -ge 1424 ]; then
    ngx_sparc32="-m32"
    ngx_sparc64="-m64"
    ngx_amd64="-m64"

else
    ngx_sparc32="-xarch=v8plus"
    ngx_sparc64="-xarch=v9"
    ngx_amd64="-xarch=amd64"
fi

case "$NGX_MACHINE" in

    i86pc)
        NGX_AUX=" src/os/unix/ngx_sunpro_x86.il"
    ;;

    sun4u | sun4v)
        NGX_AUX=" src/os/unix/ngx_sunpro_sparc64.il"
    ;;

esac

MAIN_LINK=
MODULE_LINK="-G"


# optimizations

# 20736 == 0x5100, Sun Studio 12.1

if [ "$ngx_sunc_ver" -ge 20736 ]; then
    ngx_fast="-fast"

else
    # older versions had problems with bit-fields
    ngx_fast="-fast -xalias_level=any"
fi

IPO=-xipo
CFLAGS="$CFLAGS $ngx_fast $IPO"
CORE_LINK="$CORE_LINK $ngx_fast $IPO"


case $CPU in
    pentium)
        # optimize for Pentium and Athlon
        CPU_OPT="-xchip=pentium"
    ;;

    pentiumpro)
        # optimize for Pentium Pro, Pentium II
        CPU_OPT="-xchip=pentium_pro"
    ;;

    pentium3)
        # optimize for Pentium III
        CPU_OPT="-xchip=pentium3"
        #CPU_OPT="$CPU_OPT -xarch=sse"
        CPU_OPT="$CPU_OPT -xcache=16/32/4:256/32/4"
    ;;

    pentium4)
        # optimize for Pentium 4
        CPU_OPT="-xchip=pentium4"
        #CPU_OPT="$CPU_OPT -xarch=sse2"
        CPU_OPT="$CPU_OPT -xcache=8/64/4:256/128/8"
    ;;

    opteron)
        # optimize for Opteron
        CPU_OPT="-xchip=opteron"
        #CPU_OPT="$CPU_OPT -xarch=sse2"
        CPU_OPT="$CPU_OPT -xcache=64/64/2:1024/64/16"
    ;;

    sparc32)
        # build 32-bit UltraSparc binary
        CPU_OPT="$ngx_sparc32"
        CORE_LINK="$CORE_LINK $ngx_sparc32"
        CC_AUX_FLAGS="$CC_AUX_FLAGS $ngx_sparc32"
        NGX_CPU_CACHE_LINE=64
    ;;

    sparc64)
        # build 64-bit UltraSparc binary
        CPU_OPT="$ngx_sparc64"
        CORE_LINK="$CORE_LINK $ngx_sparc64"
        CC_AUX_FLAGS="$CC_AUX_FLAGS $ngx_sparc64"
        NGX_CPU_CACHE_LINE=64
    ;;

    amd64)
        # build 64-bit amd64 binary
        CPU_OPT="$ngx_amd64"
        CORE_LINK="$CORE_LINK $ngx_amd64"
        CC_AUX_FLAGS="$CC_AUX_FLAGS $ngx_amd64"
        NGX_AUX=" src/os/unix/ngx_sunpro_amd64.il"
        NGX_CPU_CACHE_LINE=64
    ;;

esac


CFLAGS="$CFLAGS $CPU_OPT"


if [ ".$PCRE_OPT" = "." ]; then
    PCRE_OPT="$ngx_fast $IPO $CPU_OPT"
fi

if [ ".$ZLIB_OPT" = "." ]; then
    ZLIB_OPT="$ngx_fast $IPO $CPU_OPT"
fi


# stop on warning
CFLAGS="$CFLAGS -errwarn=%all"

# debug
CFLAGS="$CFLAGS -g"