Mercurial > hg > nginx
view docs/xsls/changes.xsls @ 7631:b4dbf8b98f9a
Fixed premature background subrequest finalization.
When "aio" or "aio threads" is used while processing the response body of an
in-memory background subrequest, the subrequest could be finalized with an aio
operation still in progress. Upon aio completion either parent request is
woken or the old r->write_event_handler is called again. The latter may result
in request errors. In either case post_subrequest handler is never called with
the full response body, which is typically expected when using in-memory
subrequests.
Currently in nginx background subrequests are created by the upstream module
and the mirror module. The issue does not manifest itself with these
subrequests because they are header-only. But it can manifest itself with
third-party modules which create in-memory background subrequests.
author | Dmitry Volyntsev <xeioex@nginx.com> |
---|---|
date | Mon, 02 Mar 2020 20:07:36 +0300 |
parents | 529f10f7757c |
children | e79c7521aaf4 |
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X:stylesheet { X:output method="text"; X:param lang="'en'"; X:param configuration="'../xml/change_log_conf.xml'"; X:var conf = "document($configuration)/configuration"; X:var start = "$conf/start"; X:var indent = "$conf/indent"; X:var max = "$conf/length"; X:var br = {<br>} X:template = "/" { !! "change_log"; } X:template = "change_log" { !! "changes"; } X:template = "changes" { X:text { } !{substring(concat($conf/changes[@lang=$lang]/title, //change_log/@title, ' ', @ver, ' '), 1, $conf/changes[@lang=$lang]/length)} X:if "$lang='ru'" { !{substring(@date, 9, 2)} X:text {.} !{substring(@date, 6, 2)} X:text {.} !{substring(@date, 1, 4)} } X:if "$lang='en'" { !{substring(@date, 9, 2)} !{$conf/changes[@lang=$lang]/month[number(substring(current()/@date, 6, 2))]} !{substring(@date, 1, 4)} } X:text { } !! "change"; X:text { } } X:template = "change" { X:var prefix = "$conf/changes[@lang=$lang]/*[local-name(.)=current()/@type]" X:var postfix = { X:if "$prefix" { X:text {: } } } !! "para[@lang=$lang]" (prefix = "concat($start, $prefix, $postfix)"); } X:template para(prefix) = "para" { X:var text = { !!; } X:text { } !wrap(text = "normalize-space($text)", prefix = { X:if "position() = 1" { !{$prefix} } else { !{$indent} } }) } X:template wrap(text, prefix) { X:if "$text" { X:var offset = { X:choose { X:when "starts-with($text, concat($br, ' '))" { !{string-length($br) + 2} } X:when "starts-with($text, $br)" { !{string-length($br) + 1} } X:otherwise { 1 } } } X:var length = { !length(text = "substring($text, $offset)", prefix = "string-length($prefix)", length = "$max") } !{$prefix} !{normalize-space(translate(substring($text, $offset, $length), ' ', ' '))} X:text { } !wrap(text = "substring($text, $length + $offset)", prefix = "$indent") } } X:template length(text, prefix, length) { X:var break = "substring-before(substring($text, 1, $length - $prefix + string-length($br)), $br)" X:choose { X:when "$break" { !{string-length($break)} } X:when "$length = 0" { !{$max - $prefix} } X:when "string-length($text) + $prefix <= $length" { !{$length - $prefix} } X:when "substring($text, $length - $prefix + 1, 1) = ' '" { !{$length - $prefix + 1} } X:otherwise { !length(text = "$text", prefix = "$prefix", length = "$length - 1") } } } X:template = "at" {@} X:template = "br" { !{$br} } X:template = "nobr" { !{translate(., ' ', ' ')} } }