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20c35434ef
Starting with FreeBSD 11, there is no need to use AIO operations to preload data into cache for sendfile(SF_NODISKIO) to work. Instead, sendfile() handles non-blocking loading data from disk by itself. It still can, however, return EBUSY if a page is already being loaded (for example, by a different process). If this happens, we now post an event for the next event loop iteration, so sendfile() is retried "after a short period", as manpage recommends. The limit of the number of EBUSY tolerated without any progress is preserved, but now it does not result in an alert, since on an idle system event loop iteration might be very short and EBUSY can happen many times in a row. Instead, SF_NODISKIO is simply disabled for one call once the limit is reached. With this change, sendfile(SF_NODISKIO) is now used automatically as long as sendfile() is enabled, and no longer requires "aio on;".
106 lines
2.2 KiB
Plaintext
106 lines
2.2 KiB
Plaintext
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# Copyright (C) Igor Sysoev
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# Copyright (C) Nginx, Inc.
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have=NGX_FREEBSD . auto/have_headers
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CORE_INCS="$UNIX_INCS"
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CORE_DEPS="$UNIX_DEPS $FREEBSD_DEPS"
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CORE_SRCS="$UNIX_SRCS $FREEBSD_SRCS"
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ngx_spacer='
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'
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# __FreeBSD_version and sysctl kern.osreldate are the best ways
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# to determine whether some capability exists and is safe to use.
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# __FreeBSD_version is used for the testing of the build environment.
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# sysctl kern.osreldate is used for the testing of the kernel capabilities.
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version=`grep "#define __FreeBSD_version" /usr/include/osreldate.h \
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| sed -e 's/^.* \(.*\)$/\1/'`
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osreldate=`/sbin/sysctl -n kern.osreldate`
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# setproctitle() in libutil
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if [ \( $version -ge 500000 -a $version -lt 500012 \) \
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-o $version -lt 410002 ]
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then
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echo " + setproctitle() in libutil"
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CORE_LIBS="$CORE_LIBS -lutil"
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NGX_SETPROCTITLE_LIB="-lutil"
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fi
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# sendfile
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if [ $osreldate -gt 300007 ]; then
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echo " + sendfile() found"
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have=NGX_HAVE_SENDFILE . auto/have
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CORE_SRCS="$CORE_SRCS $FREEBSD_SENDFILE_SRCS"
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fi
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if [ $osreldate -gt 1100093 ]; then
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echo " + sendfile()'s SF_NODISKIO found"
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have=NGX_HAVE_SENDFILE_NODISKIO . auto/have
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fi
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# POSIX semaphores
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# http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/127545
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if [ $osreldate -ge 701106 ]; then
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echo " + POSIX semaphores should work"
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else
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have=NGX_HAVE_POSIX_SEM . auto/nohave
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fi
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# kqueue
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if [ \( $osreldate -lt 500000 -a $osreldate -ge 410000 \) \
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-o $osreldate -ge 500011 ]
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then
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echo " + kqueue found"
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have=NGX_HAVE_KQUEUE . auto/have
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have=NGX_HAVE_CLEAR_EVENT . auto/have
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EVENT_MODULES="$EVENT_MODULES $KQUEUE_MODULE"
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CORE_SRCS="$CORE_SRCS $KQUEUE_SRCS"
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EVENT_FOUND=YES
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fi
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NGX_KQUEUE_CHECKED=YES
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# kqueue's NOTE_LOWAT
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if [ \( $version -lt 500000 -a $version -ge 430000 \) \
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-o $version -ge 500018 ]
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then
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echo " + kqueue's NOTE_LOWAT found"
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have=NGX_HAVE_LOWAT_EVENT . auto/have
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fi
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# kqueue's EVFILT_TIMER
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if [ \( $version -lt 500000 -a $version -ge 440001 \) \
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-o $version -ge 500023 ]
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then
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echo " + kqueue's EVFILT_TIMER found"
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have=NGX_HAVE_TIMER_EVENT . auto/have
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fi
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# cpuset_setaffinity()
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if [ $version -ge 701000 ]; then
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echo " + cpuset_setaffinity() found"
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have=NGX_HAVE_CPUSET_SETAFFINITY . auto/have
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fi
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