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Date:      Thu, 17 May 2007 11:44:36 +0200
From:      Alexander Leidinger <Alexander@Leidinger.net>
To:        Robert Noland <rnoland@2hip.net>
Cc:        "\[LoN\]Kamikaze" <LoN_Kamikaze@gmx.de>, Stephen Montgomery-Smith <stephen@math.missouri.edu>, Pav Lucistnik <pav@freebsd.org>, freebsd-ports@freebsd.org, Kris Kennaway <kris@obsecurity.org>
Subject:   Re: Time to abandon recursive pulling of dependencies?
Message-ID:  <20070517114436.3fdd55b1@deskjail>
In-Reply-To: <1179353641.79329.11.camel@rnoland-ibm.acs.internap.com>
References:  <464597C6.3030406@gmx.de> <20070512174011.GA22526@xor.obsecurity.org> <4645FF71.60100@gmx.de> <20070512175824.GA23103@xor.obsecurity.org> <20070512133054.B5588@math.missouri.edu> <4646193E.5040503@gmx.de> <464665D5.1090509@math.missouri.edu> <464676CC.2000203@math.missouri.edu> <46469BF5.9030603@math.missouri.edu> <1179058696.13237.3.camel@ikaros.oook.cz> <20070513101332.L82202@math.missouri.edu> <46479215.1080401@math.missouri.edu> <4647C4FB.9050607@math.missouri.edu> <4647F182.6000402@gmx.de> <46487491.6020806@math.missouri.edu> <46488168.3030300@math.missouri.edu> <464B155A.1080105@math.missouri.edu> <464B7144.2000600@math.missouri.edu> <1179353641.79329.11.camel@rnoland-ibm.acs.internap.com>

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Quoting Robert Noland <rnoland@2hip.net> (Wed, 16 May 2007 18:14:01 -0400):

> On Wed, 2007-05-16 at 16:01 -0500, Stephen Montgomery-Smith wrote:
> > Ok chaps, I think I have it.
> > 
> > This involves no recursive calls of make.  Furthermore the
> > dependencies 
> > it creates are the real dependencies on your system, not what ports 
> > thinks it should be, because it gets all the information from 
> > /var/db/pkg.  On my system it takes a second or two to register a port
> > - 
> > it takes about the same amount of time whether it has few
> > dependencies 
> > or many, except when there are zero dependencies, when it takes no
> > time 
> > at all.
> > 
> > If I get some positive feedback on this one, I'll submit a PR.  You
> > can 
> > try it out by typing "make actual-package-depends" as opposed to
> > "make 
> > package-depends."
> 
> Ok, I'm really trying to make sense of these numbers...
> 
> For gnome2-2.18.1_1 on my -current system...
> 
> rnoland-ibm% make package-depends|wc -l
>      362
> rnoland-ibm% make actual-package-depends|wc -l
>      294
> 
> Registered the old way:
> rnoland-ibm% grep @pkgdep /var/db/pkg/gnome2-2.18.1_1/+CONTENTS|wc -l
>      176
> 
> and the new way:
> rnoland-ibm% grep @pkgdep /var/db/pkg/gnome2-2.18.1_1/+CONTENTS|wc -l
>      294
> 
> I put together an awk script yesterday which was very close to the one
> Alexander posted and got 295... and the diff of the output of my awk and
> actual-package-depends is much more than a single line, which I also
> can't yet explain.

I had a look at it. It is missing those dependencies which are not
installed. Depending on when this target is used, this is ok or not.

Some benchmark:
---snip---
[original]
make package-depends  80.18s user 53.92s system 73% cpu 3:01.53 total
make package-depends  80.70s user 52.94s system 87% cpu 2:32.25 total
make package-depends > /tmp/list1  79.58s user 54.28s system 87% cpu 2:32.59 total

[no AWK]
make actual-package-depends  4.76s user 7.46s system 57% cpu 21.082 total
make actual-package-depends  4.87s user 7.34s system 67% cpu 18.019 total
make actual-package-depends > /tmp/list2  4.58s user 7.60s system 87% cpu 13.942 total

[AWK]
make actual-package-depends  3.15s user 7.45s system 85% cpu 12.420 total
make actual-package-depends  3.13s user 7.49s system 84% cpu 12.524 total
make actual-package-depends  3.11s user 7.49s system 88% cpu 11.995 total
make actual-package-depends >| /tmp/list3  3.16s user 7.42s system 89% cpu 11.83 0 total

[AWK + partly missing (only direct dependencies)]
make actual-package-depends > /tmp/list4  4.60s user 7.63s system 90% cpu 13.479 total
make actual-package-depends  4.68s user 7.56s system 87% cpu 13.985 total
make actual-package-depends  4.58s user 7.64s system 89% cpu 13.594 total

...sorting list1 & list2 & list3 & list4...

% wc -l /tmp/list*s
     320 /tmp/list1s
     308 /tmp/list2s
     308 /tmp/list3s
     310 /tmp/list4s
    1246 total
---snip---

Note, there was trackerd running in the background while testing...

For the difference between the redirected output case: I think the
gnome terminal needs a lot of time to print all the lines. But still,
the awk version takes around 3/4 of the time (interesting is the user
time, not the total time). Stephen's version can be speed up some
fractions by inserting a break into the first while-loop.

Attached is my awk-version and the awk version which also includes the
direct dependencies.

Bye,
Alexander.

-- 
The only new TV show worth watching will be cancelled.
http://www.Leidinger.net  Alexander @ Leidinger.net: PGP ID = B0063FE7
http://www.FreeBSD.org     netchild @ FreeBSD.org  : PGP ID = 72077137

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--- /usr/ports/Mk/bsd.port.mk	Sat Apr  7 14:51:47 2007
+++ /space/jails/basejail/usr/ports/Mk/bsd.port.mk	Thu May 17 11:19:03 2007
@@ -2321,7 +2321,7 @@
 DISABLE_CONFLICTS=	YES
 .endif
 .if !defined(PKG_ARGS)
-PKG_ARGS=		-v -c -${COMMENT:Q} -d ${DESCR} -f ${TMPPLIST} -p ${PREFIX} -P "`cd ${.CURDIR} && ${MAKE} package-depends | ${GREP} -v -E ${PKG_IGNORE_DEPENDS} | ${SORT} -u`" ${EXTRA_PKG_ARGS} $${_LATE_PKG_ARGS}
+PKG_ARGS=		-v -c -${COMMENT:Q} -d ${DESCR} -f ${TMPPLIST} -p ${PREFIX} -P "`cd ${.CURDIR} && ${MAKE} actual-package-depends | ${GREP} -v -E ${PKG_IGNORE_DEPENDS} | ${SORT} -u`" ${EXTRA_PKG_ARGS} $${_LATE_PKG_ARGS}
 .if !defined(NO_MTREE)
 PKG_ARGS+=		-m ${MTREE_FILE}
 .endif
@@ -5145,15 +5145,47 @@
 				shift 3; \
 			done; \
 			checked="$$dir $$childdir $$checked"; \
-		else \\
+		else \
 			${ECHO_MSG} "${PKGNAME}: \"$$dir\" non-existent -- dependency list incomplete" >&2; \
 		fi; \
 	done
 
+ACTUAL-PACKAGE-DEPENDS?= \
+	if [ "${_LIB_RUN_DEPENDS}" != "  " ]; then \
+		origins=$$(for pkgname in ${PKG_DBDIR}/*; do \
+			if [ -e $$pkgname/+CONTENTS ]; then \
+				basename $$pkgname; \
+				${SED} -n -e "s/@comment ORIGIN://p" $$pkgname/+CONTENTS; \
+			fi; \
+		done); \
+		for dir in ${_LIB_RUN_DEPENDS:C,[^:]*:([^:]*):?.*,\1,}; do \
+			dir=`dirname $$dir | xargs basename`/`basename $$dir`; \
+			set -- $$origins; \
+			while [ $$\# != 0 ]; do \
+				if [ $$dir = $$2 ]; then \
+					${ECHO_CMD} $$1:$$dir; \
+					if [ -e ${PKG_DBDIR}/$$1/+CONTENTS ]; then \
+						${AWK} -F '( |:)' '/@pkgdep / { pkgname=$$2 } /@comment DEPORIGIN:/ { printf "%s:%s\n", pkgname, $$3 }' ${PKG_DBDIR}/$$1/+CONTENTS; \
+					fi; \
+					break; \
+				fi; \
+				shift 2; \
+			done; \
+		done | sort -u; \
+	fi
+
 # Print out package names.
 
 package-depends:
 	@${PACKAGE-DEPENDS-LIST} | ${AWK} '{print $$1":"$$3}'
+
+actual-package-depends:
+	@${ACTUAL-PACKAGE-DEPENDS}
 
 # Build packages for port and dependencies
 

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	filename=bsd.port.mk-awk_and_direct_missing.diff

--- /usr/ports/Mk/bsd.port.mk	Sat Apr  7 14:51:47 2007
+++ /space/jails/basejail/usr/ports/Mk/bsd.port.mk	Thu May 17 11:19:03 2007
@@ -2321,7 +2321,7 @@
 DISABLE_CONFLICTS=	YES
 .endif
 .if !defined(PKG_ARGS)
-PKG_ARGS=		-v -c -${COMMENT:Q} -d ${DESCR} -f ${TMPPLIST} -p ${PREFIX} -P "`cd ${.CURDIR} && ${MAKE} package-depends | ${GREP} -v -E ${PKG_IGNORE_DEPENDS} | ${SORT} -u`" ${EXTRA_PKG_ARGS} $${_LATE_PKG_ARGS}
+PKG_ARGS=		-v -c -${COMMENT:Q} -d ${DESCR} -f ${TMPPLIST} -p ${PREFIX} -P "`cd ${.CURDIR} && ${MAKE} actual-package-depends | ${GREP} -v -E ${PKG_IGNORE_DEPENDS} | ${SORT} -u`" ${EXTRA_PKG_ARGS} $${_LATE_PKG_ARGS}
 .if !defined(NO_MTREE)
 PKG_ARGS+=		-m ${MTREE_FILE}
 .endif
@@ -5145,15 +5145,47 @@
 				shift 3; \
 			done; \
 			checked="$$dir $$childdir $$checked"; \
-		else \\
+		else \
 			${ECHO_MSG} "${PKGNAME}: \"$$dir\" non-existent -- dependency list incomplete" >&2; \
 		fi; \
 	done
 
+ACTUAL-PACKAGE-DEPENDS?= \
+	if [ "${_LIB_RUN_DEPENDS}" != "  " ]; then \
+		origins=$$(for pkgname in ${PKG_DBDIR}/*; do \
+			if [ -e $$pkgname/+CONTENTS ]; then \
+				basename $$pkgname; \
+				${SED} -n -e "s/@comment ORIGIN://p" $$pkgname/+CONTENTS; \
+			fi; \
+		done); \
+		for dir in ${_LIB_RUN_DEPENDS:C,[^:]*:([^:]*):?.*,\1,}; do \
+			dir=`dirname $$dir | xargs basename`/`basename $$dir`; \
+			set -- $$origins; \
+			found=false; \
+			while [ $$\# != 0 ]; do \
+				if [ $$dir = $$2 ]; then \
+					${ECHO_CMD} $$1:$$dir; \
+					if [ -e ${PKG_DBDIR}/$$1/+CONTENTS ]; then \
+						${AWK} -F '( |:)' '/@pkgdep / { pkgname=$$2 } /@comment DEPORIGIN:/ { printf "%s:%s\n", pkgname, $$3 }' ${PKG_DBDIR}/$$1/+CONTENTS; \
+					fi; \
+					found=true; \
+					break; \
+				fi; \
+				shift 2; \
+			done; \
+			if [ $$found = false ]; then \
+				${ECHO_CMD} $$(cd ${PORTSDIR}/$$dir; ${MAKE} -V PKGNAME):$$dir; \
+			fi; \
+		done | sort -u; \
+	fi
+
 # Print out package names.
 
 package-depends:
 	@${PACKAGE-DEPENDS-LIST} | ${AWK} '{print $$1":"$$3}'
+
+actual-package-depends:
+	@${ACTUAL-PACKAGE-DEPENDS}
 
 # Build packages for port and dependencies
 

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