Mercurial > hg > nginx
view auto/lib/libxslt/conf @ 7583:efd71d49bde0
Events: available bytes calculation via ioctl(FIONREAD).
This makes it possible to avoid looping for a long time while working
with a fast enough peer when data are added to the socket buffer faster
than we are able to read and process them (ticket #1431). This is
basically what we already do on FreeBSD with kqueue, where information
about the number of bytes in the socket buffer is returned by
the kevent() call.
With other event methods rev->available is now set to -1 when the socket
is ready for reading. Later in ngx_recv() and ngx_recv_chain(), if
full buffer is received, real number of bytes in the socket buffer is
retrieved using ioctl(FIONREAD). Reading more than this number of bytes
ensures that even with edge-triggered event methods the event will be
triggered again, so it is safe to stop processing of the socket and
switch to other connections.
Using ioctl(FIONREAD) only after reading a full buffer is an optimization.
With this approach we only call ioctl(FIONREAD) when there are at least
two recv()/readv() calls.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 17 Oct 2019 16:02:19 +0300 |
parents | f7e79596baf2 |
children |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. ngx_feature="libxslt" ngx_feature_name= ngx_feature_run=no ngx_feature_incs="#include <libxml/parser.h> #include <libxml/tree.h> #include <libxslt/xslt.h> #include <libxslt/xsltInternals.h> #include <libxslt/transform.h> #include <libxslt/xsltutils.h>" ngx_feature_path="/usr/include/libxml2" ngx_feature_libs="-lxml2 -lxslt" ngx_feature_test="xmlParserCtxtPtr ctxt = NULL; xsltStylesheetPtr sheet = NULL; xmlDocPtr doc = NULL; xmlParseChunk(ctxt, NULL, 0, 0); xsltApplyStylesheet(sheet, doc, NULL);" . auto/feature if [ $ngx_found = no ]; then # FreeBSD port ngx_feature="libxslt in /usr/local/" ngx_feature_path="/usr/local/include/libxml2 /usr/local/include" if [ $NGX_RPATH = YES ]; then ngx_feature_libs="-R/usr/local/lib -L/usr/local/lib -lxml2 -lxslt" else ngx_feature_libs="-L/usr/local/lib -lxml2 -lxslt" fi . auto/feature fi if [ $ngx_found = no ]; then # NetBSD port ngx_feature="libxslt in /usr/pkg/" ngx_feature_path="/usr/pkg/include/libxml2 /usr/pkg/include" if [ $NGX_RPATH = YES ]; then ngx_feature_libs="-R/usr/pkg/lib -L/usr/pkg/lib -lxml2 -lxslt" else ngx_feature_libs="-L/usr/pkg/lib -lxml2 -lxslt" fi . auto/feature fi if [ $ngx_found = no ]; then # MacPorts ngx_feature="libxslt in /opt/local/" ngx_feature_path="/opt/local/include/libxml2 /opt/local/include" if [ $NGX_RPATH = YES ]; then ngx_feature_libs="-R/opt/local/lib -L/opt/local/lib -lxml2 -lxslt" else ngx_feature_libs="-L/opt/local/lib -lxml2 -lxslt" fi . auto/feature fi if [ $ngx_found = yes ]; then CORE_INCS="$CORE_INCS $ngx_feature_path" if [ $USE_LIBXSLT = YES ]; then CORE_LIBS="$CORE_LIBS $ngx_feature_libs" fi NGX_LIB_LIBXSLT=$ngx_feature_libs else cat << END $0: error: the HTTP XSLT module requires the libxml2/libxslt libraries. You can either do not enable the module or install the libraries. END exit 1 fi ngx_feature="libexslt" ngx_feature_name=NGX_HAVE_EXSLT ngx_feature_run=no ngx_feature_incs="#include <libexslt/exslt.h>" ngx_feature_path="/usr/include/libxml2" ngx_feature_libs="-lexslt" ngx_feature_test="exsltRegisterAll();" . auto/feature if [ $ngx_found = no ]; then # FreeBSD port ngx_feature="libexslt in /usr/local/" ngx_feature_path="/usr/local/include/libxml2 /usr/local/include" if [ $NGX_RPATH = YES ]; then ngx_feature_libs="-R/usr/local/lib -L/usr/local/lib -lexslt" else ngx_feature_libs="-L/usr/local/lib -lexslt" fi . auto/feature fi if [ $ngx_found = no ]; then # NetBSD port ngx_feature="libexslt in /usr/pkg/" ngx_feature_path="/usr/pkg/include/libxml2 /usr/local/include" if [ $NGX_RPATH = YES ]; then ngx_feature_libs="-R/usr/pkg/lib -L/usr/pkg/lib -lexslt" else ngx_feature_libs="-L/usr/pkg/lib -lexslt" fi . auto/feature fi if [ $ngx_found = no ]; then # MacPorts ngx_feature="libexslt in /opt/local/" ngx_feature_path="/opt/local/include/libxml2 /opt/local/include" if [ $NGX_RPATH = YES ]; then ngx_feature_libs="-R/opt/local/lib -L/opt/local/lib -lexslt" else ngx_feature_libs="-L/opt/local/lib -lexslt" fi . auto/feature fi if [ $ngx_found = yes ]; then if [ $USE_LIBXSLT = YES ]; then CORE_LIBS="$CORE_LIBS -lexslt" fi NGX_LIB_LIBXSLT="$NGX_LIB_LIBXSLT -lexslt" fi