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* Thin pack generation: optimization.Junio C Hamano2006-04-07
| | | | | | | | | | | | | | | | Jens Axboe noticed that recent "git push" has become very slow since we made --thin transfer the default. Thin pack generation to push a handful revisions that touch relatively small number of paths out of huge tree was stupid; it registered _everything_ from the excluded revisions. As a result, "Counting objects" phase was unnecessarily expensive. This changes the logic to register the blobs and trees from excluded revisions only for paths we are actually going to send to the other end. Signed-off-by: Junio C Hamano <junkio@cox.net>
* Merge branch 'pe/cleanup'Junio C Hamano2006-04-04
|\ | | | | | | | | | | * pe/cleanup: Replace xmalloc+memset(0) with xcalloc. Use blob_, commit_, tag_, and tree_type throughout.
| * Use blob_, commit_, tag_, and tree_type throughout.Peter Eriksen2006-04-04
| | | | | | | | | | | | | | | | | | This replaces occurences of "blob", "commit", "tag", and "tree", where they're really used as type specifiers, which we already have defined global constants for. Signed-off-by: Peter Eriksen <s022018@student.dtu.dk> Signed-off-by: Junio C Hamano <junkio@cox.net>
* | Merge branch 'lt/fix-sol-pack'Junio C Hamano2006-04-04
|\ \ | |/ |/| | | | | | | | | | | * lt/fix-sol-pack: Use sigaction and SA_RESTART in read-tree.c; add option in Makefile. safe_fgets() - even more anal fgets() pack-objects: be incredibly anal about stdio semantics Fix Solaris stdio signal handling stupidities
| * safe_fgets() - even more anal fgets()Junio C Hamano2006-04-03
| | | | | | | | | | | | | | This is from Linus -- the previous round forgot to clear error after EINTR case. Signed-off-by: Junio C Hamano <junkio@cox.net>
| * pack-objects: be incredibly anal about stdio semanticsLinus Torvalds2006-04-02
| | | | | | | | | | | | | | | | | | | | | | | | | | This is the "letter of the law" version of using fgets() properly in the face of incredibly broken stdio implementations. We can work around the Solaris breakage with SA_RESTART, but in case anybody else is ever that stupid, here's the "safe" (read: "insanely anal") way to use fgets. It probably goes without saying that I'm not terribly impressed by Solaris libc. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
| * Fix Solaris stdio signal handling stupiditiesLinus Torvalds2006-04-02
| | | | | | | | | | | | | | | | | | | | | | This uses sigaction() to install the SIGALRM handler with SA_RESTART, so that Solaris stdio doesn't break completely when a signal interrupts a read. Thanks to Jason Riedy for confirming the silly Solaris signal behaviour. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* | tree/diff header cleanup.Junio C Hamano2006-03-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce tree-walk.[ch] and move "struct tree_desc" and associated functions from various places. Rename DIFF_FILE_CANON_MODE(mode) macro to canon_mode(mode) and move it to cache.h. This macro returns the canonicalized st_mode value in the host byte order for files, symlinks and directories -- to be compared with a tree_desc entry. create_ce_mode(mode) in cache.h is similar but is intended to be used for index entries (so it does not work for directories) and returns the value in the network byte order. Signed-off-by: Junio C Hamano <junkio@cox.net>
* | pack-objects: simplify "thin" pack.Junio C Hamano2006-03-06
| | | | | | | | | | | | | | | | | | | | There was a misguided logic to overly prefer using objects that we are not going to pack as the base object. This was unnecessary. It does not matter to the unpacking side where the base object is -- it matters more to make the resulting delta smaller. Signed-off-by: Junio C Hamano <junkio@cox.net>
* | Re-fix compilation warnings.Luck, Tony2006-03-01
| | | | | | | | | | | | | | | | | | | | Commit 8fcf1ad9c68e15d881194c8544e7c11d33529c2b has a combination of double cast and Andreas' switch to using unsigned long ... just the latter is sufficient (and a lot less ugly than using the double cast). Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
* | Use setenv(), fix warningsTimo Hirvonen2006-02-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Fix -Wundef -Wold-style-definition warnings - Make pll_free() static [jc: original patch by Timo had another unrelated bits: - Use setenv() instead of putenv() I'm postponing that part for now.] Signed-off-by: Timo Hirvonen <tihirvon@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
* | fix warning from pack-objects.cLuck, Tony2006-02-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When compiling on ia64 I get this warning (from gcc 3.4.3): gcc -o pack-objects.o -c -g -O2 -Wall -DSHA1_HEADER='<openssl/sha.h>' pack-objects.c pack-objects.c: In function `pack_revindex_ix': pack-objects.c:94: warning: cast from pointer to integer of different size A double cast (first to long, then to int) shuts gcc up, but is there a better way? [jc: Andreas Ericsson suggests to use ulong instead. ] Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
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*-. \ Merge branches 'jc/rev-list' and 'jc/pack-thin'Junio C Hamano2006-02-24
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * jc/rev-list: rev-list --objects: use full pathname to help hashing. rev-list --objects-edge: remove duplicated edge commit output. rev-list --objects-edge * jc/pack-thin: pack-objects: hash basename and direname a bit differently. pack-objects: allow "thin" packs to exceed depth limits pack-objects: use full pathname to help hashing with "thin" pack. pack-objects: thin pack micro-optimization. Use thin pack transfer in "git fetch". Add git-push --thin. send-pack --thin: use "thin pack" delta transfer. Thin pack - create packfile with missing delta base. Conflicts: pack-objects.c (taking "next") send-pack.c (taking "next")
| | * pack-objects: hash basename and direname a bit differently.Junio C Hamano2006-02-23
| | | | | | | | | | | | | | | | | | | | | ...so that "Makefile"s from different revs are sorted together, separate from "t/Makefile"s, but close enough. Signed-off-by: Junio C Hamano <junkio@cox.net>
| | * pack-objects: allow "thin" packs to exceed depth limitsJunio C Hamano2006-02-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When creating a new pack to be used in .git/objects/pack/ directory, we carefully count the depth of deltified objects to be reused, so that the generated pack does not to exceed the specified depth limit for runtime efficiency. However, when we are generating a thin pack that does not contain base objects, such a pack can only be used during network transfer that is expanded on the other end upon reception, so being careful and artificially cutting the delta chain does not buy us anything except increased bandwidth requirement. This patch disables the delta chain depth limit check when reusing an existing delta. Signed-off-by: Junio C Hamano <junkio@cox.net>
| | * pack-objects: use full pathname to help hashing with "thin" pack.Junio C Hamano2006-02-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | This uses the same hashing algorithm to the "preferred base tree" objects and the incoming pathnames, to group the same files from different revs together, while spreading files with the same basename in different directories. Signed-off-by: Junio C Hamano <junkio@cox.net>
| | * pack-objects: thin pack micro-optimization.Junio C Hamano2006-02-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since we sort objects by type, hash, preferredness and then size, after we have a delta against preferred base, there is no point trying a delta with non-preferred base. This seems to save expensive calls to diff-delta and it also seems to save the output space as well. Signed-off-by: Junio C Hamano <junkio@cox.net>
| | * Thin pack - create packfile with missing delta base.Junio C Hamano2006-02-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This goes together with "rev-list --object-edge" change, to feed pack-objects list of edge commits in addition to the usual object list. Upon seeing such list, pack-objects loosens the usual "self contained delta" constraints, and can produce delta against blobs and trees contained in the edge commits without storing the delta base objects themselves. The resulting packfile is not usable in .git/object/packs, but is a good way to implement "delta-only" transfer. Signed-off-by: Junio C Hamano <junkio@cox.net>
| | * pack-objects: avoid delta chains that are too long.Junio C Hamano2006-02-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This tries to rework the solution for the excess delta chain problem. An earlier commit worked it around ``cheaply'', but repeated repacking risks unbound growth of delta chains. This version counts the length of delta chain we are reusing from the existing pack, and makes sure a base object that has sufficiently long delta chain does not get deltified. Signed-off-by: Junio C Hamano <junkio@cox.net>
| | * pack-objects: finishing touches.Junio C Hamano2006-02-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This introduces --no-reuse-delta option to disable reusing of existing delta, which is a large part of the optimization introduced by this series. This may become necessary if repeated repacking makes delta chain too long. With this, the output of the command becomes identical to that of the older implementation. But the performance suffers greatly. It still allows reusing non-deltified representations; there is no point uncompressing and recompressing the whole text. It also adds a couple more statistics output, while squelching it under -q flag, which the last round forgot to do. $ time old-git-pack-objects --stdout >/dev/null <RL Generating pack... Done counting 184141 objects. Packing 184141 objects.................... real 12m8.530s user 11m1.450s sys 0m57.920s $ time git-pack-objects --stdout >/dev/null <RL Generating pack... Done counting 184141 objects. Packing 184141 objects..................... Total 184141, written 184141 (delta 138297), reused 178833 (delta 134081) real 0m59.549s user 0m56.670s sys 0m2.400s $ time git-pack-objects --stdout --no-reuse-delta >/dev/null <RL Generating pack... Done counting 184141 objects. Packing 184141 objects..................... Total 184141, written 184141 (delta 134833), reused 47904 (delta 0) real 11m13.830s user 9m45.240s sys 0m44.330s There is one remaining issue when --no-reuse-delta option is not used. It can create delta chains that are deeper than specified. A<--B<--C<--D E F G Suppose we have a delta chain A to D (A is stored in full either in a pack or as a loose object. B is depth1 delta relative to A, C is depth2 delta relative to B...) with loose objects E, F, G. And we are going to pack all of them. B, C and D are left as delta against A, B and C respectively. So A, E, F, and G are examined for deltification, and let's say we decided to keep E expanded, and store the rest as deltas like this: E<--F<--G<--A Oops. We ended up making D a bit too deep, didn't we? B, C and D form a chain on top of A! This is because we did not know what the final depth of A would be, when we checked objects and decided to keep the existing delta. Unfortunately, deferring the decision until just before the deltification is not an option. To be able to make B, C, and D candidates for deltification with the rest, we need to know the type and final unexpanded size of them, but the major part of the optimization comes from the fact that we do not read the delta data to do so -- getting the final size is quite an expensive operation. To prevent this from happening, we should keep A from being deltified. But how would we tell that, cheaply? To do this most precisely, after check_object() runs, each object that is used as the base object of some existing delta needs to be marked with the maximum depth of the objects we decided to keep deltified (in this case, D is depth 3 relative to A, so if no other delta chain that is longer than 3 based on A exists, mark A with 3). Then when attempting to deltify A, we would take that number into account to see if the final delta chain that leads to D becomes too deep. However, this is a bit cumbersome to compute, so we would cheat and reduce the maximum depth for A arbitrarily to depth/4 in this implementation. Signed-off-by: Junio C Hamano <junkio@cox.net>
| | * pack-objects: reuse data from existing packs.Junio C Hamano2006-02-17
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When generating a new pack, notice if we have already needed objects in existing packs. If an object is stored deltified, and its base object is also what we are going to pack, then reuse the existing deltified representation unconditionally, bypassing all the expensive find_deltas() and try_deltas() calls. Also, notice if what we are going to write out exactly match what is already in an existing pack (either deltified or just compressed). In such a case, we can just copy it instead of going through the usual uncompressing & recompressing cycle. Without this patch, in linux-2.6 repository with about 1500 loose objects and a single mega pack: $ git-rev-list --objects v2.6.16-rc3 >RL $ wc -l RL 184141 RL $ time git-pack-objects p <RL Generating pack... Done counting 184141 objects. Packing 184141 objects.................... a1fc7b3e537fcb9b3c46b7505df859f0a11e79d2 real 12m4.323s user 11m2.560s sys 0m55.950s With this patch, the same input: $ time ../git.junio/git-pack-objects q <RL Generating pack... Done counting 184141 objects. Packing 184141 objects..................... a1fc7b3e537fcb9b3c46b7505df859f0a11e79d2 Total 184141, written 184141, reused 182441 real 1m2.608s user 0m55.090s sys 0m1.830s Signed-off-by: Junio C Hamano <junkio@cox.net>
* | pack-objects eye-candy: finishing touches.Junio C Hamano2006-02-22
| | | | | | | | | | | | | | | | This updates the progress output to match "every one second or every percent whichever comes early" used by unpack-objects, as discussed on the list. Signed-off-by: Junio C Hamano <junkio@cox.net>
* | also adds progress when actually writing a packNicolas Pitre2006-02-22
| | | | | | | | | | | | | | | | | | | | | | If that pack is big, it takes significant time to write and might benefit from some more eye candies as well. This is however disabled when the pack is written to stdout since in that case the output is usually piped into unpack_objects which already does its own progress reporting. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* | nicer eye candies for pack-objectsNicolas Pitre2006-02-22
| | | | | | | | | | | | | | | | | | | | | | | | This provides a stable and simpler progress reporting mechanism that updates progress as often as possible but accurately not updating more than once a second. The deltification phase is also made more interesting to watch (since repacking a big repository and only seeing a dot appear once every many seconds is rather boring and doesn't provide much food for anticipation). Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* | pack-objects: avoid delta chains that are too long.Junio C Hamano2006-02-22
| | | | | | | | | | | | | | | | | | | | | | | | This tries to rework the solution for the excess delta chain problem. An earlier commit worked it around ``cheaply'', but repeated repacking risks unbound growth of delta chains. This version counts the length of delta chain we are reusing from the existing pack, and makes sure a base object that has sufficiently long delta chain does not get deltified. Signed-off-by: Junio C Hamano <junkio@cox.net>
* | pack-objects: finishing touches.Junio C Hamano2006-02-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This introduces --no-reuse-delta option to disable reusing of existing delta, which is a large part of the optimization introduced by this series. This may become necessary if repeated repacking makes delta chain too long. With this, the output of the command becomes identical to that of the older implementation. But the performance suffers greatly. It still allows reusing non-deltified representations; there is no point uncompressing and recompressing the whole text. It also adds a couple more statistics output, while squelching it under -q flag, which the last round forgot to do. $ time old-git-pack-objects --stdout >/dev/null <RL Generating pack... Done counting 184141 objects. Packing 184141 objects.................... real 12m8.530s user 11m1.450s sys 0m57.920s $ time git-pack-objects --stdout >/dev/null <RL Generating pack... Done counting 184141 objects. Packing 184141 objects..................... Total 184141, written 184141 (delta 138297), reused 178833 (delta 134081) real 0m59.549s user 0m56.670s sys 0m2.400s $ time git-pack-objects --stdout --no-reuse-delta >/dev/null <RL Generating pack... Done counting 184141 objects. Packing 184141 objects..................... Total 184141, written 184141 (delta 134833), reused 47904 (delta 0) real 11m13.830s user 9m45.240s sys 0m44.330s There is one remaining issue when --no-reuse-delta option is not used. It can create delta chains that are deeper than specified. A<--B<--C<--D E F G Suppose we have a delta chain A to D (A is stored in full either in a pack or as a loose object. B is depth1 delta relative to A, C is depth2 delta relative to B...) with loose objects E, F, G. And we are going to pack all of them. B, C and D are left as delta against A, B and C respectively. So A, E, F, and G are examined for deltification, and let's say we decided to keep E expanded, and store the rest as deltas like this: E<--F<--G<--A Oops. We ended up making D a bit too deep, didn't we? B, C and D form a chain on top of A! This is because we did not know what the final depth of A would be, when we checked objects and decided to keep the existing delta. Unfortunately, deferring the decision until just before the deltification is not an option. To be able to make B, C, and D candidates for deltification with the rest, we need to know the type and final unexpanded size of them, but the major part of the optimization comes from the fact that we do not read the delta data to do so -- getting the final size is quite an expensive operation. To prevent this from happening, we should keep A from being deltified. But how would we tell that, cheaply? To do this most precisely, after check_object() runs, each object that is used as the base object of some existing delta needs to be marked with the maximum depth of the objects we decided to keep deltified (in this case, D is depth 3 relative to A, so if no other delta chain that is longer than 3 based on A exists, mark A with 3). Then when attempting to deltify A, we would take that number into account to see if the final delta chain that leads to D becomes too deep. However, this is a bit cumbersome to compute, so we would cheat and reduce the maximum depth for A arbitrarily to depth/4 in this implementation. Signed-off-by: Junio C Hamano <junkio@cox.net>
* | pack-objects: reuse data from existing packs.Junio C Hamano2006-02-22
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When generating a new pack, notice if we have already needed objects in existing packs. If an object is stored deltified, and its base object is also what we are going to pack, then reuse the existing deltified representation unconditionally, bypassing all the expensive find_deltas() and try_deltas() calls. Also, notice if what we are going to write out exactly match what is already in an existing pack (either deltified or just compressed). In such a case, we can just copy it instead of going through the usual uncompressing & recompressing cycle. Without this patch, in linux-2.6 repository with about 1500 loose objects and a single mega pack: $ git-rev-list --objects v2.6.16-rc3 >RL $ wc -l RL 184141 RL $ time git-pack-objects p <RL Generating pack... Done counting 184141 objects. Packing 184141 objects.................... a1fc7b3e537fcb9b3c46b7505df859f0a11e79d2 real 12m4.323s user 11m2.560s sys 0m55.950s With this patch, the same input: $ time ../git.junio/git-pack-objects q <RL Generating pack... Done counting 184141 objects. Packing 184141 objects..................... a1fc7b3e537fcb9b3c46b7505df859f0a11e79d2 Total 184141, written 184141, reused 182441 real 1m2.608s user 0m55.090s sys 0m1.830s Signed-off-by: Junio C Hamano <junkio@cox.net>
* Make pack-objects chattier.Junio C Hamano2006-02-12
| | | | | | | | You could give -q to squelch it, but currently no tool does it. This would make 'git clone host:repo here' over ssh not silent again. Signed-off-by: Junio C Hamano <junkio@cox.net>
* fetch-clone progress: finishing touches.Junio C Hamano2006-02-11
| | | | | | This makes fetch-pack also report the progress of packing part. Signed-off-by: Junio C Hamano <junkio@cox.net>
* code comments: spellJunio C Hamano2005-12-29
| | | | Signed-off-by: Junio C Hamano <junkio@cox.net>
* Document the --non-empty command-line option to git-pack-objects.Nikolai Weibull2005-12-08
| | | | | | | | This provides (minimal) documentation for the --non-empty command-line option to the pack-objects command. Signed-off-by: Nikolai Weibull <nikolai@bitwi.se> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Make the rest of commands work from a subdirectory.Junio C Hamano2005-11-28
| | | | | | | | | | These commands are converted to run from a subdirectory. commit-tree convert-objects merge-base merge-index mktag pack-objects pack-redundant prune-packed read-tree tar-tree unpack-file unpack-objects update-server-info write-tree Signed-off-by: Junio C Hamano <junkio@cox.net>
* git-repack: Properly abort in corrupt repositoryLinus Torvalds2005-11-21
| | | | | | | | | | | In a corrupt repository, git-repack produces a pack that does not contain needed objects without complaining, and the result of this combined with -d flag can be very painful -- e.g. a lossage of one tree object can lead to lossage of blobs reachable only through that tree. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* pack-objects: Allow use of pre-generated pack.Junio C Hamano2005-10-26
| | | | | | | | | | | | | | | | git-pack-objects can reuse pack files stored in $GIT_DIR/pack-cache directory, when a necessary pack is found. This is hopefully useful when upload-pack (called from git-daemon) is expected to receive requests for the same set of objects many times (e.g full cloning request of any project, or updates from the set of heads previous day to the latest for a slow moving project). Currently git-pack-objects does *not* keep pack files it creates for reusing. It might be useful to add --update-cache option to it, which would allow it store pack files it created in the pack-cache directory, and prune rarely used ones from it. Signed-off-by: Junio C Hamano <junkio@cox.net>
* Unlocalized isspace and friendsLinus Torvalds2005-10-14
| | | | | | | | | Do our own ctype.h, just to get the sane semantics: we want locale-independence, _and_ we want the right signed behaviour. Plus we only use a very small subset of ctype.h anyway (isspace, isalpha, isdigit and isalnum). Signed-off-by: Junio C Hamano <junkio@cox.net>
* Add support for "local" packingLinus Torvalds2005-10-13
| | | | | | | | | | | | This adds the "--local" flag to git-pack-objects, which acts like "--incremental", except that instead of ignoring all packed objects, it only ignores objects that are packed and in an alternate object tree. As a result, it effectively only does a local re-pack: any remote-packed objects will stay in the alternate object directories. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Fix packname hash generation.Junio C Hamano2005-10-12
| | | | | | | | | | | | | | | This changes the generation of hash packfiles have in their names, from "hash of object names as fed to us" to "hash of object names in the resulting pack, in the order they appear in the index file". The new "git-index-pack" command is taught to output the computed hash value to its standard output. With this, we can store downloaded pack in a temporary file without knowing its final name, run git-index-pack to generate idx for it while finding out its final name, and then rename the pack and idx to their final names. Signed-off-by: Junio C Hamano <junkio@cox.net>
* [PATCH] Plug memory leak in git-pack-objectsSergey Vlasov2005-08-08
| | | | | | | | | | | find_deltas() should free its temporary objects before returning. [jc: Sergey, if you have [PATCH] title on the Subject line of your e-mail, please do not repeat it on the first line in your message body. Thanks.] Signed-off-by: Sergey Vlasov <vsu@altlinux.ru> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Make the name of a pack-file depend on the objects packed there-in.Linus Torvalds2005-07-03
| | | | | | | | | | This means that the .git/objects/pack directory is also rsync'able, since the filenames created there-in are either unique or refer to the same data. Otherwise you might not be able to pull from a directory that is partly packed without having to worry about missing objects due to pack-file name clashes.
* Add "--non-empty" flag to git-pack-objectsLinus Torvalds2005-07-03
| | | | It skips writing the pack-file if it ends up being empty.
* Add "--incremental" flag to git-pack-objectsLinus Torvalds2005-07-03
| | | | It won't add an object that is already in a pack to the new pack.
* [PATCH] assorted delta code cleanupNicolas Pitre2005-06-29
| | | | | | | | | This is a wrap-up patch including all the cleanups I've done to the delta code and its usage. The most important change is the factorization of the delta header handling code. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Make git pack files use little-endian size encodingLinus Torvalds2005-06-28
| | | | | | | | | This makes it match the new delta encoding, and admittedly makes the code easier to follow. This also updates the PACK file version to 2, since this (and the delta encoding change in the previous commit) are incompatible with the old format.
* [PATCH] Emit base objects of a delta chain when the delta is output.Junio C Hamano2005-06-28
| | | | | | | | | | Deltas are useless by themselves and when you use them you need to get to their base objects. A base object should inherit recency from the most recent deltified object that is based on it and that is what this patch teaches git-pack-objects. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Fix unpack-objects for header length information.Junio C Hamano2005-06-28
| | | | | | | | Standalone unpack-objects command was not adjusted for header length encoding change when dealing with deltified entry. This fixes it. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Change pack file format. Hopefully for the last time.Linus Torvalds2005-06-28
| | | | | | This also adds a header with a signature, version info, and the number of objects to the pack file. It also encodes the file length and type more efficiently.
* git-pack-objects: add "--stdout" flag to write the pack file to stdoutLinus Torvalds2005-06-28
| | | | This also suppresses creation of the index file.
* Teach packing about "tag" objectsLinus Torvalds2005-06-28
| | | | | (And teach sha1_file and unpack-object know how to unpack them too, of course)
* [PATCH] Enhance sha1_file_size() into sha1_object_info()Junio C Hamano2005-06-27
| | | | | | | | This lets us eliminate one use of map_sha1_file() outside sha1_file.c, to bring us one step closer to the packed GIT. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Remove "delta" object representation.Junio C Hamano2005-06-27
| | | | | | | | | | | Packed delta files created by git-pack-objects seems to be the way to go, and existing "delta" object handling code has exposed the object representation details to too many places. Remove it while we refactor code to come up with a proper interface in sha1_file.c. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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