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Signed-off-by: Allan McRae <allan@archlinux.org>
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Use MALLOC instead of malloc for safety in libalpm. Some changes are pure
refactoring, but for others this provides a success check for memory
allocation.
Signed-off-by: Allan McRae <allan@archlinux.org>
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Forcing vim users to view files with a tabstop of 2 seems really
unnecessary when noet is set. I find it much easier to read code with
ts=4 and I dislike having to override the modeline by hand.
Command run:
find . -type f -exec sed -i '/vim.* noet/s# ts=2 sw=2##' {} +
Signed-off-by: Florian Pritz <bluewind@xinu.at>
Signed-off-by: Allan McRae <allan@archlinux.org>
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Signed-off-by: Allan McRae <allan@archlinux.org>
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Signed-off-by: Allan McRae <allan@archlinux.org>
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Add 2012 to the copyright range for all libalpm and pacman source files.
Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
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This patch changes a variety of small things related to our pkghash
implementation with an eye toward performance, especially on native
32-bit systems.
* Use `unsigned int` rather than `size_t` for hash sizes. We already
return ERANGE for any attempted creation of a hash greater than 1
million elements, so unsigned int is more than large enough for our
purposes. Switching to this type allows 32 bit systems to do native
math without helper functions from libgcc.
* _alpm_pkghash_create() now internally adds extra padding for
additional array elements, rather than that being the responsibility of
the caller.
* #define values are moved into static const values in pkghash.c; a new
`stride` value is also extracted (but remains set at 1).
* Division and modulus operators are removed from the normal find and
add paths if possible. We store the upper limit of the number of
elements in the hash so we no longer need to calculate this every
element addition. When doing wraparound position calculations, we only
apply the modulus operator if the value is greater than the number of
buckets.
Signed-off-by: Dan McGee <dan@archlinux.org>
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In every case we were calling calloc, the struct we allocated (or the
memory to be used) is fully specified later in the method.
For alpm_list_t allocations, we always set all of data, next, and prev.
For list copying and transforming to an array, we always copy the entire
data element, so no need to zero it first.
Signed-off-by: Dan McGee <dan@archlinux.org>
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Signed-off-by: Allan McRae <allan@archlinux.org>
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Signed-off-by: Allan McRae <allan@archlinux.org>
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This is the last user of our global handle object. Once again the diff
is large but the functional changes are not.
Signed-off-by: Dan McGee <dan@archlinux.org>
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This involves some serious changes and a very messy diff, unfortunately.
Signed-off-by: Dan McGee <dan@archlinux.org>
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The usefulness of this is rather limited due to it not being compiled
into production builds. When you do choose to see the output, it is
often overwhelming and not helpful. The best bet is to use a debugger
and/or well-placed fprintf() statements.
Signed-off-by: Dan McGee <dan@archlinux.org>
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Signed-off-by: Dave Reisner <d@falconindy.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
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Conflicts:
lib/libalpm/be_sync.c
lib/libalpm/db.c
src/pacman/util.c
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spotted by clang analyzer
Signed-off-by: Xavier Chantry <chantry.xavier@gmail.com>
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This was discussed and more or less agreed upon on the mailing list. A
huge checkin, but if we just do it and let people adjust the pain will
end soon enough. Rebasing should be relatively straighforward for anyone
that sees conflicts; just be sure you use the new return style if
possible.
The following semantic patch was used to do the change, along with some
hand-massaging in order to preserve parenthesis where appropriate:
The semantic match that finds this problem is as follows, although some
hand-massaging was done in order to keep parenthesis where appropriate:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression a;
@@
- return(a);
+ return a;
// </smpl>
A macros_file was also provided with the following content:
Additional steps taken, mainly for ASSERT() macros:
$ sed -i -e 's#return(NULL)#return NULL#' lib/libalpm/*.c
$ sed -i -e 's#return(-1)#return -1#' lib/libalpm/*.c
Signed-off-by: Dan McGee <dan@archlinux.org>
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* Use stat() and not lstat(); we don't care for the size of the symlink if
it is one, we want the size of the reference file.
* FS#22896, fix local database estimation on platforms that don't abide by
the nlink assumption for number of children.
* Fix a missing newline on an error message.
Signed-off-by: Dan McGee <dan@archlinux.org>
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The overlapping code in _alpm_pkghash_add() and _alpm_pkghash_add_sorted()
are now in a new static function pkghash_add_pkg(). This function has a
third flag parameter which determines whether the package should be added in
sorted order.
Signed-off-by: Pang Yan Han <pangyanhan@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
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Rather than potentially move every item to the next NULL, attempt to move at
most one item at a time by iterating backwards from the NULL location in the
hash array. If we move an item, we repeat the process on the now shorter
"chain" until no more items need moving.
Signed-off-by: Dan McGee <dan@archlinux.org>
Signed-off-by: Allan McRae <allan@archlinux.org>
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Removes the code that was duplicated and has now been refactored into a
separate method.
Signed-off-by: Dan McGee <dan@archlinux.org>
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Fully removes a package from the hash. Also unify prototype with
removal from an alpm_list_t, fixing issues when removing a package
from the pkgcache.
Signed-off-by: Allan McRae <allan@archlinux.org>
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Signed-off-by: Allan McRae <allan@archlinux.org>
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Rehash without recreating the hash table list or reallocating the
memory for holding the list nodes.
Signed-off-by: Allan McRae <allan@archlinux.org>
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While probably still not optimal in terms of everyday usage in
pacman, this reduces the absolute size increase to "more reasonable"
levels. For databases greater than 5000 in size, the minimum size
increase is used which is still on the order of a 10% increase.
Signed-off-by: Allan McRae <allan@archlinux.org>
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Check that the requested size of a pkghash is not beyond the maximum
prime. Also check for successful creation of a new hash before
rehashing.
Signed-off-by: Allan McRae <allan@archlinux.org>
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This allows us to get through the rehash required by smoke001 and pass
all pactests. It is by no means the best or most efficient
implementation but it does do the job.
Signed-off-by: Dan McGee <dan@archlinux.org>
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Signed-off-by: Allan McRae <allan@archlinux.org>
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