Mercurial > hg > nginx
annotate auto/os/freebsd @ 7993:96ae8e57b3dd
Avoid sending "Connection: keep-alive" when shutting down.
When a worker process is shutting down, keepalive is not used: this is checked
before the ngx_http_set_keepalive() call in ngx_http_finalize_connection().
Yet the "Connection: keep-alive" header was still sent, even if we know that
the worker process is shutting down, potentially resulting in additional
requests being sent to the connection which is going to be closed anyway.
While clients are expected to be able to handle asynchronous close events
(see ticket #1022), it is certainly possible to send the "Connection: close"
header instead, informing the client that the connection is going to be closed
and potentially saving some unneeded work.
With this change, we additionally check for worker process shutdown just
before sending response headers, and disable keepalive accordingly.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Tue, 11 Jan 2022 02:23:49 +0300 |
parents | ec2e6893caaa |
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1 |
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2 # Copyright (C) Igor Sysoev |
4412 | 3 # Copyright (C) Nginx, Inc. |
444
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509 | 6 have=NGX_FREEBSD . auto/have_headers |
455 | 7 |
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8 CORE_INCS="$UNIX_INCS" |
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9 CORE_DEPS="$UNIX_DEPS $FREEBSD_DEPS" |
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10 CORE_SRCS="$UNIX_SRCS $FREEBSD_SRCS" |
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11 |
455 | 12 ngx_spacer=' |
13 ' | |
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15 |
455 | 16 # __FreeBSD_version and sysctl kern.osreldate are the best ways |
17 # to determine whether some capability exists and is safe to use. | |
686 | 18 # __FreeBSD_version is used for the testing of the build environment. |
455 | 19 # sysctl kern.osreldate is used for the testing of the kernel capabilities. |
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21 version=`grep "#define __FreeBSD_version" /usr/include/osreldate.h \ |
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22 | sed -e 's/^.* \(.*\)$/\1/'` |
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455 | 24 osreldate=`/sbin/sysctl -n kern.osreldate` |
25 | |
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27 # setproctitle() in libutil |
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28 |
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29 if [ \( $version -ge 500000 -a $version -lt 500012 \) \ |
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30 -o $version -lt 410002 ] |
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31 then |
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32 echo " + setproctitle() in libutil" |
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33 |
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34 CORE_LIBS="$CORE_LIBS -lutil" |
509 | 35 NGX_SETPROCTITLE_LIB="-lutil" |
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36 fi |
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37 |
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38 # sendfile |
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39 |
455 | 40 if [ $osreldate -gt 300007 ]; then |
563 | 41 echo " + sendfile() found" |
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42 |
469 | 43 have=NGX_HAVE_SENDFILE . auto/have |
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44 CORE_SRCS="$CORE_SRCS $FREEBSD_SENDFILE_SRCS" |
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45 fi |
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46 |
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Simplified sendfile(SF_NODISKIO) usage.
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47 if [ $osreldate -gt 1100093 ]; then |
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48 echo " + sendfile()'s SF_NODISKIO found" |
3065 | 49 |
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50 have=NGX_HAVE_SENDFILE_NODISKIO . auto/have |
3065 | 51 fi |
52 | |
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53 # POSIX semaphores |
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54 # http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/127545 |
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55 |
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56 if [ $osreldate -ge 701106 ]; then |
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57 echo " + POSIX semaphores should work" |
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58 else |
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59 have=NGX_HAVE_POSIX_SEM . auto/nohave |
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60 fi |
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61 |
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62 |
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63 # kqueue |
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64 |
455 | 65 if [ \( $osreldate -lt 500000 -a $osreldate -ge 410000 \) \ |
66 -o $osreldate -ge 500011 ] | |
195
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67 then |
563 | 68 echo " + kqueue found" |
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69 |
469 | 70 have=NGX_HAVE_KQUEUE . auto/have |
71 have=NGX_HAVE_CLEAR_EVENT . auto/have | |
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72 EVENT_MODULES="$EVENT_MODULES $KQUEUE_MODULE" |
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73 CORE_SRCS="$CORE_SRCS $KQUEUE_SRCS" |
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74 EVENT_FOUND=YES |
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75 fi |
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76 |
489 | 77 |
455 | 78 NGX_KQUEUE_CHECKED=YES |
79 | |
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80 |
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81 # kqueue's NOTE_LOWAT |
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82 |
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83 if [ \( $version -lt 500000 -a $version -ge 430000 \) \ |
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84 -o $version -ge 500018 ] |
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85 then |
563 | 86 echo " + kqueue's NOTE_LOWAT found" |
469 | 87 have=NGX_HAVE_LOWAT_EVENT . auto/have |
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88 fi |
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89 |
563 | 90 # kqueue's EVFILT_TIMER |
91 | |
92 if [ \( $version -lt 500000 -a $version -ge 440001 \) \ | |
93 -o $version -ge 500023 ] | |
94 then | |
95 echo " + kqueue's EVFILT_TIMER found" | |
96 have=NGX_HAVE_TIMER_EVENT . auto/have | |
97 fi | |
98 | |
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99 |
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100 # cpuset_setaffinity() |
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101 |
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102 if [ $version -ge 701000 ]; then |
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103 echo " + cpuset_setaffinity() found" |
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104 have=NGX_HAVE_CPUSET_SETAFFINITY . auto/have |
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105 fi |