view auto/cc/msvc @ 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 78f8ac479735
children b7b7f3a0cc28
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# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


# MSVC 6.0 SP2                            cl 12.00
# MSVC Toolkit 2003 (7.1)                 cl 13.10
# MSVC 2005 Express Edition SP1 (8.0)     cl 14.00
# MSVC 2008 Express Edition (9.0)         cl 15.00
# MSVC 2010 (10.0)                        cl 16.00
# MSVC 2015 (14.0)                        cl 19.00


NGX_MSVC_VER=`$NGX_WINE $CC 2>&1 | grep 'Compiler Version' 2>&1 \
                                 | sed -e 's/^.* Version \(.*\)/\1/'`

echo " + cl version: $NGX_MSVC_VER"

have=NGX_COMPILER value="\"cl $NGX_MSVC_VER\"" . auto/define


ngx_msvc_ver=`echo $NGX_MSVC_VER | sed -e 's/^\([0-9]*\).*/\1/'`


# optimizations

# maximize speed, equivalent to -Og -Oi -Ot -Oy -Ob2 -Gs -GF -Gy
CFLAGS="$CFLAGS -O2"

# enable global optimization
#CFLAGS="$CFLAGS -Og"
# enable intrinsic functions
#CFLAGS="$CFLAGS -Oi"

# disable inline expansion
#CFLAGS="$CFLAGS -Ob0"
# explicit inline expansion
#CFLAGS="$CFLAGS -Ob1"
# explicit and implicit inline expansion
#CFLAGS="$CFLAGS -Ob2"

# enable frame pointer omission
#CFLAGS="$CFLAGS -Oy"
# disable stack checking calls
#CFLAGS="$CFLAGS -Gs"

# pools strings as read/write
#CFLAGS="$CFLAGS -Gf"
# pools strings as read-only
#CFLAGS="$CFLAGS -GF"


case $CPU in
    pentium)
        # optimize for Pentium and Athlon
        CPU_OPT="-G5"
    ;;

    pentiumpro)
        # optimize for Pentium Pro, Pentium II and Pentium III
        CPU_OPT="-G6"
    ;;

    pentium4)
        # optimize for Pentium 4, MSVC 7
        CPU_OPT="-G7"
    ;;
esac

# __cdecl, default, must be used with OpenSSL, md5 asm, and sha1 asm
#CPU_OPT="$CPU_OPT -Gd"
# __stdcall
#CPU_OPT="$CPU_OPT -Gz"
# __fastcall
#CPU_OPT="$CPU_OPT -Gr"


CFLAGS="$CFLAGS $CPU_OPT"


# warnings

CFLAGS="$CFLAGS -W4"

# stop on warning
CFLAGS="$CFLAGS -WX"

# disable logo
CFLAGS="$CFLAGS -nologo"

# the link flags
CORE_LINK="$CORE_LINK -link -verbose:lib"

# link with libcmt.lib, multithreaded
LIBC="-MT"
# link with msvcrt.dll
# however, MSVC Toolkit 2003 has no MSVCRT.LIB
#LIBC="-MD"

CFLAGS="$CFLAGS $LIBC"

CORE_LIBS="$CORE_LIBS kernel32.lib user32.lib"

# Win32 GUI mode application
#CORE_LINK="$CORE_LINK -subsystem:windows -entry:mainCRTStartup"

# debug
# msvc under Wine issues
# C1902: Program database manager mismatch; please check your installation
if [ -z "$NGX_WINE" ]; then
   CFLAGS="$CFLAGS -Zi"
   CORE_LINK="$CORE_LINK -debug"
fi


# MSVC 2005 supports C99 variadic macros
if [ "$ngx_msvc_ver" -ge 14 ]; then
    have=NGX_HAVE_C99_VARIADIC_MACROS . auto/have
fi


# precompiled headers
CORE_DEPS="$CORE_DEPS $NGX_OBJS/ngx_config.pch"
CORE_LINK="$CORE_LINK $NGX_OBJS/ngx_pch.obj"
NGX_PCH="$NGX_OBJS/ngx_config.pch"
NGX_BUILD_PCH="-Ycngx_config.h -Fp$NGX_OBJS/ngx_config.pch"
NGX_USE_PCH="-Yungx_config.h -Fp$NGX_OBJS/ngx_config.pch"


# the resource file
NGX_RES="$NGX_OBJS/nginx.res"
NGX_RCC="rc -fo$NGX_RES \$(CORE_INCS) $NGX_WIN32_RC"
CORE_LINK="$NGX_RES $CORE_LINK"


# dynamic modules
#MAIN_LINK="-link -def:$NGX_OBJS/nginx.def"
#MODULE_LINK="-LD $NGX_OBJS/nginx.lib"


ngx_pic_opt=
ngx_objout="-Fo"
ngx_binout="-Fe"
ngx_objext="obj"
ngx_binext=".exe"

ngx_long_start='@<<
	'
ngx_long_end='<<'
ngx_long_regex_cont=' \
	'
ngx_long_cont='
	'

# MSVC understand / in path
#ngx_regex_dirsep='\\'
#ngx_dirsep="\\"