Mercurial > hg > nginx
view auto/cc/msvc @ 6536:f7849bfb6d21
Improved EPOLLRDHUP handling.
When it's known that the kernel supports EPOLLRDHUP, there is no need in
additional recv() call to get EOF or error when the flag is absent in the
event generated by the kernel. A special runtime test is done at startup
to detect if EPOLLRDHUP is actually supported by the kernel because
epoll_ctl() silently ignores unknown flags.
With this knowledge it's now possible to drop the "ready" flag for partial
read. Previously, the "ready" flag was kept until the recv() returned EOF
or error. In particular, this change allows the lingering close heuristics
(which relies on the "ready" flag state) to actually work on Linux, and not
wait for more data in most cases.
The "available" flag is now used in the read event with the semantics similar
to the corresponding counter in kqueue.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Fri, 13 May 2016 17:19:23 +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="\\"