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See https://errorprone.info/bugpattern/JdkObsolete
Change-Id: Id105e2695eb64523bd217f507bf95f909bc6b348
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This makes RevCommit extensible to allow having different structure of
child-parent relationship. This change is a pre-requsite for having a
FilteredRevCommit that overrides parents from the RevCommit. That then
provides a cheaper way to walk over a subset of RevCommits instead of
an expensive way that applies filters while walking over selected
commits. Useful with Blame which works on a single file and that can be
made performant, if we know all the commits needed by the Blame
algorithm. So Blame algorithm can avoid walking over finding what
commits to blame on.
This change makes parents field on RevCommit private and exposes it
thrrough overrideable methods such as getParents, getParent at index,
getParentCount and setParents. All other files other than RevCommit are
updating the usages of accessing RevCommits parents.
Change-Id: I2d13b001c599cc4ebc92d1ab6e07b07acb3b7fe5
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This is the format given by the Eclipse legal doc generator [1].
[1] https://www.eclipse.org/projects/tools/documentation.php?id=technology.jgit
Bug: 548298
Change-Id: I8d8cabc998ba1b083e3f0906a8d558d391ffb6c4
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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RevWalk does not currently provide a --first-parent equivalent and the
feature has been requested.
Add a field to the RevWalk class to specify whether walks should
traverse first parents only. Modify Generator implementations to support
the feature.
Change-Id: I4a9a0d5767f82141dcf6d08659d7cb77c585fae4
Signed-off-by: Dave Borowitz <dborowitz@google.com>
Signed-off-by: Alex Spradlin <alexaspradlin@google.com>
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Remove it from
* package private functions.
* try blocks
* for loops
this was done with the following python script:
$ cat f.py
import sys
import re
import os
def replaceFinal(m):
return m.group(1) + "(" + m.group(2).replace('final ', '') + ")"
methodDecl = re.compile(r"^([\t ]*[a-zA-Z_ ]+)\(([^)]*)\)")
def subst(fn):
input = open(fn)
os.rename(fn, fn + "~")
dest = open(fn, 'w')
for l in input:
l = methodDecl.sub(replaceFinal, l)
dest.write(l)
dest.close()
for root, dirs, files in os.walk(".", topdown=False):
for f in files:
if not f.endswith('.java'):
continue
full = os.path.join(root, f)
print full
subst(full)
Change-Id: If533a75a417594fc893e7c669d2c1f0f6caeb7ca
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
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Change-Id: Id924f79c8b2c720297ebc49bf9c5d4ddd6d52547
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
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Some repository topologies can cause carryOntoHistory to overflow the
thread stack, due to its strategy of recursing into the 2nd+ parents
of a merge commit. This can easily happen if a project maintains a
local fork, and frequently pulls from the upstream repository, which
itself may have a branchy history.
Rewrite the carryOntoHistory algorithm to use a fixed amount of thread
stack, pushing the save points onto the heap. By using heap space the
thread stack depth is no longer a concern. Repositories are instead
limited by available memory.
The algorithm is now structured as two loops:
carryOntoHistory: This outer loop pops saved commits off the top of
the stack, allowing the inner loop algorithm to dive down that path
and carry bits onto commits along that part of the graph. The loop
ends when there are no more stack elements.
carryOntoHistoryInner: The inner loop walks along a single path of
the graph. For a string of pearls (commits with one parent each)
r <- s <- t <- u
the algorithm walks backwards from u to r by iteratively updating
its local variable 'c'. This avoids heap allocation along a simple
path that does not require remembering state.
The inner loop breaks in the HAVE_ALL case, when all bits have been
found to be previously set on the commit. This occurs when a prior
iteration of the outer loop (carryOntoHistory) explored a different
path to this same commit, and copied the bits onto it.
When the inner loop encounters a merge commit, it pushes all parents
onto the heap based stack by allocating individual CarryStack
elements for each parent. Parents are pushed in order, allowing
side branches to be explored first.
A small optimization is taken for the last parent, avoiding pushing
it and instead updating 'c', allowing the side branch to be entered
without allocating a CarryStack.
Change-Id: Ib7b67d90f141c497fbdc61a31b0caa832e4b3c04
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Since the introduction of generic type parameter inference in Java 7,
it's not necessary to explicitly specify the type of generic parameters.
Enable the warning in Eclipse, and fix all occurrences.
Change-Id: I9158caf1beca5e4980b6240ac401f3868520aad0
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
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Fix JGits merge-base calculation in case of inconsistent commit times.
JGit was potentially failing to compute correct merge-bases when the
commit times where inconsistent (a parent commit was younger than a
child commit). The code in MergeBaseGenerator was aware of the fact that
sometimes the discovery of a merge base x can occur after the parents of
x have been seen (see comment in #carryOntoOne()). But in the light of
inconsistent commit times it was possible that these parents of a
merge-base have already been returned as a merge-base.
This commit fixes the bug by buffering all commits generated by
MergeBaseGenerator. It is expected that this buffer will be small
because the number of merge-bases will be small. Additionally a new
flag is used to mark the ancestors of merge-bases. This allows to filter
out the unwanted commits.
Bug: 507584
Change-Id: I9cc140b784c3231b972bd2c3de61a789365237ab
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This was added a very long time ago to support the failed
DHT storage implementation. Since then no storage system
was able to make use of this API, but it pollutes internals
of the walkers.
Kill the API on ObjectReader and drop the invocations from
the walker code.
Change-Id: I36608afdac13a6c3084d7c7e0af5e0cb22900332
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Change-Id: I763590a45d75f00a09097ab6f89581a3bbd3c797
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In bc1af8459e ("RevWalk: Don't reset ObjectReader when stopping") we
stopped releasing the reader when the current log traversal is over.
This should have also been applied to the merge base logic that is
buried within MergeGenerator, but got missed.
Change-Id: I8328f43f02cba06fd545e22134872e781b9d4d36
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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By giving the reader information about the roots of a revision
traversal, some readers may be able to prefetch information from
their backing store using background threads in order to reduce
data access latency. However this isn't typically necessary so
the default reader implementation doesn't react to the advice.
Change-Id: I72c6cbd05cff7d8506826015f50d9f57d5cda77e
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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We don't actually need a Repository object here, just an ObjectReader
that can load content for us. So change the API to depend on that.
However, this breaks the asCommit and asTag legacy translation methods
on RevCommit and RevTag, so we still have to keep the Repository
inside of RevWalk for those two types. Hopefully we can drop those in
the future, and then drop the Repository off the RevWalk.
Change-Id: Iba983e48b663790061c43ae9ffbb77dfe6f4818e
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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The strings are externalized into the root resource bundles.
The resource bundles are stored under the new "resources" source
folder to get proper maven build.
Strings from tests are, in general, not externalized. Only in
cases where it was necessary to make the test pass the strings
were externalized. This was typically necessary in cases where
e.getMessage() was used in assert and the exception message was
slightly changed due to reuse of the externalized strings.
Change-Id: Ic0f29c80b9a54fcec8320d8539a3e112852a1f7b
Signed-off-by: Sasa Zivkov <sasa.zivkov@sap.com>
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Per CQ 3448 this is the initial contribution of the JGit project
to eclipse.org. It is derived from the historical JGit repository
at commit 3a2dd9921c8a08740a9e02c421469e5b1a9e47cb.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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