view auto/cc/sunc @ 3293:8abb88374c6c

Fix a bug introduced in r2032: After a child process has read a terminate message from a channel, the process tries to read the channel again. The kernel (at least FreeBSD) may preempt the process and sends a SIGIO signal to a master process. The master process sends a new terminate message, the kernel switches again to the the child process, and the child process reads the messages instead of an EAGAIN error. And this may repeat over and over. Being that the child process can not exit the cycle and test the termination flag set by the message handler. The fix disallow the master process to send a new terminate message on SIGIO signal reception. It may send the message only on SIGALARM signal.
author Igor Sysoev <igor@sysoev.ru>
date Wed, 04 Nov 2009 19:41:08 +0000
parents 7e02df612521
children 84bd993b8cd3
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# Copyright (C) Igor Sysoev


# 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

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() { printf("%d", __SUNPRO_C); }

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 $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


# optimizations

IPO=-xipo
CFLAGS="$CFLAGS -fast $IPO"
CORE_LINK="$CORE_LINK -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="-fast $IPO $CPU_OPT"
fi

if [ ".$MD5_OPT" = "." ]; then
    MD5_OPT="-fast $IPO $CPU_OPT"
fi

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


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

# debug
CFLAGS="$CFLAGS -g"