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Author SHA1 Message Date
Nguyễn Thái Ngọc Duy
c43cb38612 Move estimate_bisect_steps to libgit.a
This function is used by bisect.c, part of libgit.a while
estimate_bisect_steps stays in builtin/rev-list.c. Move it to bisect.a
so we won't have undefine reference if a standalone program that uses
libgit.a happens to pull it in.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Jeff King <peff@peff.net>
2012-10-29 03:08:30 -04:00
Ramsay Jones
d292bfaf35 Call git_pathdup() rather than xstrdup(git_path("..."))
In addition to updating the two xstrdup(git_path("...")) call sites
with git_pathdup(), we also fix a memory leak by freeing the memory
allocated to the ADD_EDIT.patch 'file' in the edit_patch() function.

Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-04 13:34:46 -07:00
Michael Haggerty
144e709004 bisect: copy filename string obtained from git_path()
Prevent the string from being overwritten by other callers of
git_path() and friends before we are done using it.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-05-03 13:15:35 -07:00
Junio C Hamano
0941d60545 Merge branch 'rs/pending'
* rs/pending:
  commit: factor out clear_commit_marks_for_object_array
  checkout: use leak_pending flag
  bundle: use leak_pending flag
  bisect: use leak_pending flag
  revision: add leak_pending flag
  checkout: use add_pending_{object,sha1} in orphan check
  revision: factor out add_pending_sha1
  checkout: check for "Previous HEAD" notice in t2020

Conflicts:
	builtin/checkout.c
	revision.c
2011-10-13 19:03:22 -07:00
Junio C Hamano
7a95d1be03 Merge branch 'jk/argv-array'
* jk/argv-array:
  run_hook: use argv_array API
  checkout: use argv_array API
  bisect: use argv_array API
  quote: provide sq_dequote_to_argv_array
  refactor argv_array into generic code
  quote.h: fix bogus comment
  add sha1_array API docs
2011-10-05 12:36:24 -07:00
René Scharfe
86a0a408b9 commit: factor out clear_commit_marks_for_object_array
Factor out the code to clear the commit marks for a whole struct
object_array from builtin/checkout.c into its own exported function
clear_commit_marks_for_object_array and use it in bisect and bundle
as well.  It handles tags and commits and ignores objects of any
other type.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-03 11:15:34 -07:00
René Scharfe
353f5657a8 bisect: use leak_pending flag
Instead of creating a copy of the list of pending objects, copy the
struct object_array that points to it, turn on leak_pending, and thus
cause prepare_revision_walk to leave it to us.  And free it once
we're done.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-03 11:15:27 -07:00
Jeff King
8a534b6124 bisect: use argv_array API
Now that the argv_array API exists, we can save some lines
of code.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-09-14 11:56:57 -07:00
Jon Seymour
fee92fc1dd bisect: introduce support for --no-checkout option.
If --no-checkout is specified, then the bisection process uses:

	git update-ref --no-deref HEAD <trial>

at each trial instead of:

	git checkout <trial>

Improved-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-04 15:34:32 -07:00
Jeff King
902bb36451 bisect: refactor sha1_array into a generic sha1 list
This is a generally useful abstraction, so let's let others
make use of it.  The refactoring is more or less a straight
copy; however, functions and struct members have had their
names changed to match string_list, which is the most
similar data structure.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-19 20:02:10 -07:00
Christian Couder
56ff37941e bisect: use find_commit_subject() instead of custom code
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-23 16:12:47 -07:00
Junio C Hamano
9e2b885741 Merge branch 'cc/maint-bisect-paths'
* cc/maint-bisect-paths:
  bisect: error out when passing bad path parameters
2010-03-01 01:09:21 -08:00
Christian Couder
8f69f72fca bisect: error out when passing bad path parameters
As reported by Mark Lodato, "git bisect", when it was started with
path parameters that match no commit was kind of working without
taking account of path parameters and was reporting something like:

Bisecting: -1 revisions left to test after this (roughly 0 steps)

It is more correct and safer to just error out in this case, before
displaying the revisions left, so this patch does just that.

Note that this bug is very old, it exists at least since v1.5.5.
And it is possible to detect that case earlier in the bisect
algorithm, but it is not clear that it would be an improvement to
error out earlier, on the contrary it may change the behavior of
"git rev-list --bisect-all" for example, which is currently correct.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-01 01:04:35 -08:00
Junio C Hamano
56eb8b43eb Merge branch 'jc/symbol-static'
* jc/symbol-static:
  date.c: mark file-local function static
  Replace parse_blob() with an explanatory comment
  symlinks.c: remove unused functions
  object.c: remove unused functions
  strbuf.c: remove unused function
  sha1_file.c: remove unused function
  mailmap.c: remove unused function
  utf8.c: mark file-local function static
  submodule.c: mark file-local function static
  quote.c: mark file-local function static
  remote-curl.c: mark file-local function static
  read-cache.c: mark file-local functions static
  parse-options.c: mark file-local function static
  entry.c: mark file-local function static
  http.c: mark file-local functions static
  pretty.c: mark file-local function static
  builtin-rev-list.c: mark file-local function static
  bisect.c: mark file-local function static
2010-01-20 14:37:25 -08:00
Junio C Hamano
5b15950ac4 Merge branch 'maint'
* maint:
  bisect: fix singular/plural grammar nit
2010-01-19 16:57:10 -08:00
David Ripton
6329bade66 bisect: fix singular/plural grammar nit
Remove the trailing 's' from "revisions" and "steps" when there is
only one.

Signed-off-by: David Ripton <dripton@ripton.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-19 12:50:48 -08:00
Junio C Hamano
ebdc302e3e bisect.c: mark file-local function static
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-11 23:16:16 -08:00
Thiago Farina
bd757c1859 Use warning function instead of fprintf(stderr, "Warning: ...").
Signed-off-by: Thiago Farina <tfransosi@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-03 16:17:03 -08:00
Nanako Shiraishi
21d0bc2f9a git-bisect: call the found commit "*the* first bad commit"
Signed-off-by: Nanako Shiraishi <nanako3@lavabit.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-08-26 12:05:57 -07:00
Junio C Hamano
dd787c19c4 Merge branch 'tr/die_errno'
* tr/die_errno:
  Use die_errno() instead of die() when checking syscalls
  Convert existing die(..., strerror(errno)) to die_errno()
  die_errno(): double % in strerror() output just in case
  Introduce die_errno() that appends strerror(errno) to die()
2009-07-06 09:39:46 -07:00
Junio C Hamano
702beb3af0 Merge branch 'cc/bisect'
* cc/bisect:
  Documentation: remove warning saying that "git bisect skip" may slow bisection
  bisect: use a PRNG with a bias when skipping away from untestable commits
2009-07-01 19:41:04 -07:00
Thomas Rast
d824cbba02 Convert existing die(..., strerror(errno)) to die_errno()
Change calls to die(..., strerror(errno)) to use the new die_errno().

In the process, also make slight style adjustments: at least state
_something_ about the function that failed (instead of just printing
the pathname), and put paths in single quotes.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-27 11:14:53 -07:00
Linus Torvalds
2af202be3d Fix various sparse warnings in the git source code
There are a few remaining ones, but this fixes the trivial ones. It boils
down to two main issues that sparse complains about:

 - warning: Using plain integer as NULL pointer

   Sparse doesn't like you using '0' instead of 'NULL'. For various good
   reasons, not the least of which is just the visual confusion. A NULL
   pointer is not an integer, and that whole "0 works as NULL" is a
   historical accident and not very pretty.

   A few of these remain: zlib is a total mess, and Z_NULL is just a 0.
   I didn't touch those.

 - warning: symbol 'xyz' was not declared. Should it be static?

   Sparse wants to see declarations for any functions you export. A lack
   of a declaration tends to mean that you should either add one, or you
   should mark the function 'static' to show that it's in file scope.

   A few of these remain: I only did the ones that should obviously just
   be made static.

That 'wt_status_submodule_summary' one is debatable. It has a few related
flags (like 'wt_status_use_color') which _are_ declared, and are used by
builtin-commit.c. So maybe we'd like to export it at some point, but it's
not declared now, and not used outside of that file, so 'static' it is in
this patch.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-20 21:52:55 -07:00
Christian Couder
ebc9529f03 bisect: use a PRNG with a bias when skipping away from untestable commits
Using a PRNG (pseudo random number generator) with a bias should be better
than alternating between 3 fixed ratios.

In repositories with many untestable commits it should prevent alternating
between areas where many commits are untestable. The bias should favor
commits that can give more information, so that the bisection process
should not loose much efficiency.

HPA suggested to use a PRNG and found that the best bias is to raise a
ratio between 0 and 1 given by the PRNG to the power 1.5.

An integer square root function is implemented to avoid including
<math.h> and linking with -lm.

A PRNG function is implemented to get the same number sequence on
different machines as suggested by "man 3 rand".

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-13 10:47:34 -07:00
Christian Couder
62d0b0daf1 bisect: when skipping, choose a commit away from a skipped commit
To do that a new function "apply_skip_ratio" is added and another
function "managed_skipped" is created to wrap both "filter_skipped"
and the previous one.

In "managed_skipped" we detect when we should choose a commit away
from a skipped one and then we automatically choose a skip ratio
to pass to "apply_skip_ratio".

The ratio is choosen so that it alternates between 1/5, 2/5 and
3/5.

In "apply_skip_ratio", we ignore a given ratio of all the commits
that could be tested.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-06 11:26:56 -07:00
Christian Couder
9af3589e0e bisect: add parameters to "filter_skipped"
because we will need to get more information from this function in
some later patches.

The new "int *count" parameter gives the number of commits left after
the skipped commit have been filtered out.

The new "int *skipped_first" parameter tells us if the first commit
in the list has been skipped. Note that using this parameter also
changes the behavior of the function if the first commit is indeed
skipped. Because we assume that in this case we will want all the
filtered commits, not just the first one, even if "show_all" is not
set.

So using a not NULL "skipped_first" parameter really means that we
plan to choose to test another commit than the first non skipped
one if the first commit in the list is skipped. That in turn means
that, in case the first commit is skipped, we have to return a
fully filtered list.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-06 11:26:56 -07:00
Christian Couder
e22278c0a0 bisect: display first bad commit without forking a new process
Previously "git diff-tree --pretty COMMIT" was run using
"run_command_v_opt" to display information about the first bad
commit.

The goal of this patch is to avoid a "fork" and an "exec" call
when displaying that information.

To do that, we manually setup revision information as
"git diff-tree --pretty" would do it, and then use the
"log_tree_commit" function.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-28 22:39:59 -07:00
Christian Couder
7a8e3895f6 bisect: drop unparse_commit() and use clear_commit_marks()
The goal of this patch series is to check if good revisions are
ancestor of the bad revision without forking a process to launch
"git rev-list $good ^$bad".

This new version of this patch series does not use an "unparse_commit"
function anymore, we use "clear_commit_marks" instead.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-27 13:45:45 -07:00
Christian Couder
2d938fc7bc bisect: check ancestors without forking a "git rev-list" process
We must save the pending commits that will be used during revision
walking and unparse them after, because we want to leave a clean
state for the next revision walking that will try to find the best
bisection point.

As we don't fork a process anymore to call "git rev-list", we need
to remove the use of GIT_TRACE to check how "git rev-list" is
called from the t6030 test that uses it.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-17 23:29:17 -07:00
Christian Couder
a22347c6c8 bisect: rework some rev related functions to make them more reusable
This patches changes the "bisect_rev_setup" and "bisect_common"
functions to make it easier to reuse them in a later patch.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-17 23:17:35 -07:00
Christian Couder
0871984d30 bisect: make "git bisect" use new "--next-all" bisect-helper function
This patch replace the "--next-exit" option of "git bisect--helper"
with a "--next-all" option that does merge base checking using
the "check_good_are_ancestors_of_bad" function implemented in
"bisect.c" in a former patch.

The new "--next-all" option is then used in "git-bisect.sh" instead
of the "--next-exit" option, and all the shell functions in
"git-bisect.sh" that are now unused are removed.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-10 14:30:33 -07:00
Christian Couder
d937d4aca1 bisect: add "check_good_are_ancestors_of_bad" function
This is a port of the function with the same name that is in
"git-bisect.sh". The new function is not used yet but will be in
a later patch.

We also implement an helper "check_ancestors" function that use
"start_command" and "finish_command" to launch
"git rev-list $good ^$bad".

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-10 14:30:32 -07:00
Christian Couder
c053766280 bisect: implement the "check_merge_bases" function
And all functions needed to make it work.

This is a port from the shell function with the same name
"git-bisect.sh". This function is not used yet but it will be used
later.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-10 14:30:31 -07:00
Christian Couder
1da8c4fc2c bisect: automatically sort sha1_array if needed when looking it up
This makes sha1_array easier to use, so later patches will be simpler.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-10 14:30:30 -07:00
Christian Couder
aaaff9e2d2 bisect: make skipped array functions more generic
So they can be used on the good array too.

This is done by renaming many functions and some variables to
remove "skip" in the name, and by adding a
"struct sha1_array *array" argument where needed.

While at it, make the second argument to "lookup_sha1_array"
const. It becomes "const unsigned char *sha1".

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-10 14:30:29 -07:00
Christian Couder
2b020695e4 bisect: remove too much function nesting
This patch moves some function calls into "bisect_next_exit" so
that functions are nesting less.

The call to "bisect_rev_setup" is moved from "bisect_common" into
"bisect_next_exit" and the call to "read_bisect_refs" from
"bisect_rev_setup" into "bisect_next_exit".

While at it, "rev_argv" is moved into "bisect_rev_setup".

This will make it easier and cleaner to implement checking merge
bases.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-10 14:30:26 -07:00
Christian Couder
1c953a1f46 bisect: use new "struct argv_array" to prepare argv for "setup_revisions"
Because we will use other instances of this struct.

The "rev_argv_push" function is changed into 2 functions
"argv_array_push" and "argv_array_push_sha1" that take a "struct
argv_array *" as first argument. And these functions are used to
simplify "bisect_rev_setup".

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-10 14:30:23 -07:00
Christian Couder
fad2d31d62 bisect: store good revisions in a "sha1_array"
This will make it easier to use good revisions for checking merge
bases later.

To simplify the code, a new "sha1_array_push" function is also
introduced.

And while at it we move the earlier part of the code to fill the
argv that is passed to "setup_revisions", so that all this code is
now completely after "read_bisect_refs".

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-10 14:30:22 -07:00
Christian Couder
3755ccdb65 bisect: implement "rev_argv_push" to fill an argv with revs
This patch is a minor clean up right now, but the new function
will evolve and be used more later.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-10 14:30:19 -07:00
Christian Couder
6212b1aae9 bisect: use "sha1_array" to store skipped revisions
This patch creates a "struct sha1_array" to store skipped revisions,
so that the same struct can be reused in a later patch for good
revisions.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-10 14:30:16 -07:00
Christian Couder
c99f069de2 bisect--helper: remove "--next-vars" option as it is now useless
Because it has been replaced by "--next-exit".

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-10 00:30:28 -07:00
Christian Couder
ef24c7ca05 bisect--helper: add "--next-exit" to output bisect results
The goal of this patch is to port more shell code from the "bisect_next"
function in "git-bisect.sh" to C code in "builtin-bisect--helper.c".

So we port the code that interprets the bisection result and stops or
continues (by checking out the next revision) the bisection process.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-10 00:30:28 -07:00
Christian Couder
2ace9727be bisect: move common bisect functionality to "bisect_common"
So we can easily reuse the code in a later patch.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-10 00:30:28 -07:00
Christian Couder
13858e5770 rev-list: add "int bisect_show_flags" in "struct rev_list_info"
This is a cleanup patch to make it easier to use the
"show_bisect_vars" function and take advantage of the rev_list_info
struct.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-07 22:12:44 -07:00
Christian Couder
d797257eb2 rev-list: remove last static vars used in "show_commit"
This patch removes the last static variables that were used in
the "show_commit" function.

To do that, we create a new "rev_list_info" struct that we will pass
in the "void *data" argument to "show_commit".

This means that we have to change the first argument to
"show_bisect_vars" too.

While at it, we also remove a "struct commit_list *list" variable
in "cmd_rev_list" that is not really needed.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-07 22:12:41 -07:00
Christian Couder
e89aa6d2f5 bisect--helper: string output variables together with "&&"
When doing:

eval "git bisect--helper --next-vars" | {
        while read line
        do
                echo "$line &&"
        done
        echo ':'
}

the result code comes from the last "echo ':'", not from running
"git bisect--helper --next-vars".

This patch gets rid of the need to string together the line from
the output of "git bisect--helper" with "&&" in the calling script
by making "git bisect--helper --next-vars" return output variables
already in that format.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-05 01:29:45 -07:00
Christian Couder
37c4c38d73 rev-list: pass "int flags" as last argument of "show_bisect_vars"
Instead of "int show_all, int show_tried" we now only pass "int flags",
because we will add one more flag in a later patch.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-05 01:29:45 -07:00
Christian Couder
3b437b0dab bisect: implement "read_bisect_paths" to read paths in "$GIT_DIR/BISECT_NAMES"
This is needed because  "git bisect--helper" must read bisect paths
in "$GIT_DIR/BISECT_NAMES", so that a bisection can be performed only
on commits that touches paths in this file.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-05 01:29:44 -07:00
Christian Couder
1bf072e366 bisect--helper: implement "git bisect--helper"
This patch implements a new "git bisect--helper" builtin plumbing
command that will be used to migrate "git-bisect.sh" to C.

We start by implementing only the "--next-vars" option that will
read bisect refs from "refs/bisect/", and then compute the next
bisect step, and output shell variables ready to be eval'ed by
the shell.

At this step, "git bisect--helper" ignores the paths that may
have been put in "$GIT_DIR/BISECT_NAMES". This will be fixed in a
later patch.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-05 01:29:44 -07:00
Christian Couder
4eb5b64631 bisect: use the new generic "sha1_pos" function to lookup sha1
instead of the specific one that was simpler but less efficient.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-05 01:29:44 -07:00