ObjectDirectoryInserter was always creating a temporary file,
writing the complete compressed contents of a tree, fsync()'ing
that to stable storage, and only then checking to see if there
was already an object with the same SHA-1 in the repository.
For commits this strategy makes some sense, the commit is very
unlikely to exist in the repository, as there are embedded times
and these change with each commit.
However for trees coming out of DirCache, it is more common for the
tree to already exist in the repository. Most subdirectories are
not modified in any given commit. Doing all of this local file IO
for things that already exist is very slow.
Try to detect cases where the object is "small enough" that it can
be processed entirely in memory, and avoid doing disk IO entirely
if the object already exists.
Also increase the size of the output buffer for the deflation.
This should boost the average write(2) syscall size from 512 bytes
to 8192 bytes, making streaming of large compressed contents to
disk slightly more efficient.
Change-Id: I1d40364e8725468522435814631916d73174c92b
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
I had the conditions wrong here, causing the in-memory InputStream
to always appear to be at EOF.
Change-Id: I6811d6187a34eaf1fd6c5002550d631decdfc391
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Adds a git-reflog command and associated tests.
Bug: 347859
Change-Id: Iba146ac842cc9ca0be43d3381b4082c9e92bf56f
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>
It's useful to have ReflogEntry refactored out so it can be
used by clients via the JGit API.
Change-Id: I03044df9af9f9547777545b7c9b93bdf5f8b7cb5
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>
If an internal exception occurs while packing and the request
needs to abort, the HTTP response might already be committed due
to progress message having already been delivered to the client.
This prevents UploadPackServlet from resetting the response and
sending back an HTTP 500 response.
Try to catch all exceptions and report internal errors over the
sideband stream or as an ERR command during the initial ACK/NAK
negotiation phase. This allows JGit to transmit an error message
that the user will receive on their console without needing to
worry about resetting the (already gone) HTTP response.
Change-Id: Ie393fb8bb55d2b79ab1276adf71c781c1807f9fe
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
If a fetch or push needs to apply more than a few references
to the local repository it may take more than 0.25 seconds to
process all of the updates. This is especially true in the DHT
storage system during an initial push of a project with many tags.
The backend database may need to use a transaction to ensure each
tag reference creation is unique, and there may be large delays
caused by these transactions.
Change-Id: Ib11a077adfbd525253e425d327f2e2c2380804c7
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
BlameGenerator digs through history and discovers the origin of each
line of some result file. BlameResult consumes the stream of regions
created by the generator and lays them out in a table for applications
to display alongside of source lines.
Applications may optionally push in the working tree copy of a file
using the push(String, byte[]) method, allowing the application to
receive accurate line annotations for the working tree version. Lines
that are uncommitted (difference between HEAD and working tree) will
show up with the description given by the application as the author,
or "Not Committed Yet" as a default string.
Applications may also run the BlameGenerator in reverse mode using the
reverse(AnyObjectId, AnyObjectId) method instead of push(). When
running in the reverse mode the generator annotates lines by the
commit they are removed in, rather than the commit they were added in.
This allows a user to discover where a line disappeared from when they
are looking at an older revision in the repository. For example:
blame --reverse 16e810b2..master -L 1080, org.eclipse.jgit.test/tst/org/eclipse/jgit/storage/file/RefDirectoryTest.java
( 1080) }
2302a6d3 (Christian Halstrick 2011-05-20 11:18:20 +0200 1081)
2302a6d3 (Christian Halstrick 2011-05-20 11:18:20 +0200 1082) /**
2302a6d3 (Christian Halstrick 2011-05-20 11:18:20 +0200 1083) * Kick the timestamp of a local file.
Above we learn that line 1080 (a closing curly brace of the prior
method) still exists in branch master, but the Javadoc comment below
it has been removed by Christian Halstrick on May 20th as part of
commit 2302a6d3. This result differs considerably from that of C
Git's blame --reverse feature. JGit tells the reader which commit
performed the delete, while C Git tells the reader the last commit
that still contained the line, leaving it an exercise to the reader
to discover the descendant that performed the removal.
This is still only a basic implementation. Quite notably it is
missing support for the smart block copy/move detection that the C
implementation of `git blame` is well known for. Despite being
incremental, the BlameGenerator can only be run once. After the
generator runs it cannot be reused. A better implementation would
support applications browsing through history efficiently.
In regards to CQ 5110, only a little of the original code survives.
CQ: 5110
Bug: 306161
Change-Id: I84b8ea4838bb7d25f4fcdd540547884704661b8f
Signed-off-by: Kevin Sawicki <kevin@github.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>
There is no reason for this type to contain an ArrayList and try to
hide the implementation. It only slows down execution by adding an
extra layer of method dispatch to each invocation.
Instead subclass from ArrayList.
Change-Id: Ifbb9c7060c2fe3d5a7397c1aa85fbade14088637
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Some servlet containers require the servlet to read the EOF marker
from the input stream before a response can be output if the stream
is using "Transfer-Encoding: chunked"... which is typical for any
sort of large push to a repository over smart HTTP.
Ensure the EOF is always read by the PackParser when it is handling
the stream, and fail fast if there is more data present than expected
since this does indicate a protocol error.
Also ensure the EOF is read by UploadPack before it starts to output
a partial response using packing progress meters.
Change-Id: I131db9dea20b2324cb7c3272a814f21296bc64bd
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
When cloning into a bare repository we should not create remote
tracking branches (e.g refs/remotes/origin/testX). Branches of the
remote repository should but fetched into into branches of the same
name (e.g refs/heads/testX). Also add the noCheckout option which
would prevent checkout after fetch.
Change-Id: I5d4cc0389f3f30c53aa0065f38119af2a1430909
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
RefDirectory was not using FileSnapshot correctly in all places. This
is fixed with this commit. Additionally the constructors for the
different types of refs have been changed to take a FileSnapshot
instead of a modification time.
Change-Id: Ifb6a59e87e8b058a398c38cdfb9d648f0bad4bf8
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
RefData now uses a sequence number as part of the field, ensuring
that updates always increase the sequence number by one whenever
a reference is modified.
Attaching a sequence number to RefData will help with storing
reference log entries during updates. As the sequence number should
be unique within the reference name space, log entries can be keyed
by the sequence number and remain unique. Making this work over
reference delete-create cycles will require an additional RefTable
API to return the oldest sequence number previously used in the
reference log to seed the recreated reference.
Change-Id: I11cfff2a96ef962e57f29925a3eef41bdbf9f9bb
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>
Adds a class which can be used to calculates a SHA1 of the diff
associated with a patch, similar to git patch-id.
In this version whitespace is not ignored.
Change-Id: I421d15ea905e23df543082786786841cbe3ef10d
Signed-off-by: Stefan Lay <stefan.lay@sap.com>
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>
EGit change Iba3b87293c22e5fe7d989fc312184aa7463c4387 is also required
to make this work for EGit.
Change-Id: Iedc80e133e66d72e78ff0980b6e12634f75eca36
Signed-off-by: Carsten Pfeiffer <carsten.pfeiffer@gebit.de>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Since this change may affect performance and memory consumption on every
access to a loose ref I explicitly made it a RFC to collect opinions.
Previously RefDirectory.scanRef() was not detecting an update of a
loose ref when the update didn't changed the modification time of
the backing file. RefDirectory cached loose refs and the way to detect
outdated cache entries was to compare lastmodification timestamp on the
file representing the ref. If two updates to the same ref happen faster
than the filesystem-timer granularity (for linux this is 2 seconds)
there is the possiblity that we don't detect the update.
Because of this bug EGit's PushOperationTest only works with 2 second
sleeps inside.
This change let RefDirectory use FileSnapshot to detect such situations.
FileSnapshot helps to remember when a file was last read from disk and
therefore enables to decide when to load a file from disk although
modification time has not changed.
Change-Id: I03b9a137af097ec69c4c5e2eaa512d2bdd7fe080
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>
A checkout conflict during rebase setup should leave the repository
in SAFE state which means ensuring that the rebase temporary files
need to be removed.
Bug: 346813
Change-Id: If8b758fde73ed5a452a99a195a844825a03bae1a
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>
Change Ia2ab4f8dc95020f2914ff01c2bf3b1bc62a9d45d added merge
support for when OURS or THEIRS was simultaneously deleted
and modified. That changeset however did not add create an
entry in the conflicts table so clients would see a CONFLICTING
result but getConflicts() would return null.
This change creates a MergeResult for the conflicting file.
Bug: 345684
Change-Id: I52acb81c1729b49c9fb3e7a477c6448d8e55c317
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>
Change Ib9898fe0f982fa08e41f1dca9452c43de715fdb6 added support for
the 'cherry-pick' fast forward case where the upstream commit history
does not include any merge commits. This change adds support for the
case where merge commits exist and the local branch has no changes.
Bug: 344779
Change-Id: If203ce5aa1b4e5d4d7982deb621b710e71f4ee10
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>
Previously when merging two contents with a non-empty base and one of
the contents was empty (size == 0) and the other was modified there
was a potentially expensive calculation until we finally always come
to the same result -> the complete non-deleted content should collide
with the empty content.
This proposal adds an optimization to detect empty input content and
to produce the appropriate result immediatly.
Change-Id: Ie6a837260c19d808f0e99173f570ff96dd22acd3
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
For the following patch on the linux 2.6.32 tag:
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -685,6 +685,7 @@ static void enqueue_sleeper(struct cfs_rq *cfs_rq, struct sc
static void check_spread(struct cfs_rq *cfs_rq, struct sched_entity *se)
{
+#if 0
#ifdef CONFIG_SCHED_DEBUG
s64 d = se->vruntime - cfs_rq->min_vruntime;
@@ -694,6 +695,7 @@ static void check_spread(struct cfs_rq *cfs_rq, struct
sched
if (d > 3*sysctl_sched_latency)
schedstat_inc(cfs_rq, nr_spread_over);
#endif
+#endif
}
static void
JGit produced an incorrect diff, attempting to add a new "}" instead
of the new "#endif" at the end of the hunk. This was caused by a prior
fix for bug 328895 where we wanted to "slide" a diff down in the file
when adding a new method/function and want to show the closing curly
brace as being added after the new method, rather than added onto the
end of the prior function or method just before the insertion point.
Bug: 345956
Change-Id: I32b9e24f1e2980258b1b39dd1807919ab1c5f9b2
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
The problem occurred when the first text ends in the middle
of the last line of the other text and the first text has no
end of line.
Bug: 344975
Change-Id: I1f0dd9f8062f2148a7c1341c9122202e082ad19d
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>
This makes the message look the same as in C Git (the "."):
This reverts commit <sha1>.
Change-Id: I4c254c122277b127e7b039c0d1c7f7a0d691530d
Signed-off-by: Robin Stocker <robin@nibor.org>
Carsten Pfeiffer
Shawn O. Pearce
Chris Aniszczyk
Marc Strapetz
Matthias Sohn
Ketan Padegaonkar
Christian Halstrick
Abhishek Bhatnagar
Stefan Lay
Kevin Sawicki
Bernard Leach
Christoph Brill
Piotr Janik
Robin Rosenberg
Robin Stocker