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This one is pretty darn useless. Just derefence the ->data attribute
since the type is public anyway and save yourself the function call.
Signed-off-by: Dan McGee <dan@archlinux.org>
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This accomplishes quite a few things with one rather invasive change.
1. Iteration is much more performant, due to a reduction in pointer
chasing and linear item access.
2. Data structures are smaller- we no longer have the overhead of the
linked list as the file struts are now laid out consecutively in
memory.
3. Memory allocation has been massively reworked. Before, we would
allocate three different pieces of memory per file item- the list
struct, the file struct, and the copied filename. What this resulted
in was massive fragmentation of memory when loading filelists since
the memory allocator had to leave holes all over the place. The new
situation here now removes the need for any list item allocation;
allocates the file structs in contiguous memory (and reallocs as
necessary), leaving only the strings as individually allocated. Tests
using valgrind (massif) show some pretty significant memory
reductions on the worst case `pacman -Ql > /dev/null` (366387 files
on my machine):
Before:
Peak heap: 54,416,024 B
Useful heap: 36,840,692 B
Extra heap: 17,575,332 B
After:
Peak heap: 38,004,352 B
Useful heap: 28,101,347 B
Extra heap: 9,903,005 B
Several small helper methods have been introduced, including a list to
array conversion helper as well as a filelist merge sort that works
directly on arrays.
Signed-off-by: Dan McGee <dan@archlinux.org>
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We can readily detect the first node in a list by checking if
node->prev->next is NULL. So there is no need to pass the head
of the list to this function and its prototype now looks like
all the other item accessors.
Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
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The only thing this accessor did was remove the const qualifier
given our entire list implementation requires passing around the
head anyway.
Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
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Helper function to get the previous item in a list
Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
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This takes in the list and a list item, and does the pointer dance necessary
to remove it from the list regardless of whether it is first, last, or
somewhere in the middle. It is useful for callers that already know what
item needs to be removed and have a pointer to it rather than doing a search
by data that the plain alpm_list_remove() does.
Refactor alpm_list_remove() to use this function as well.
Signed-off-by: Dan McGee <dan@archlinux.org>
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There is a lot of swtiching between size_t and int for alpm_list sizes
in the codebase. Start converting these to all be size_t by adjusting
the return type of alpm_list_count and fixing all additional warnings
given by -Wconversion that are generated by this change.
Dan: a few more small changes to ensure things compile, adjusting some
printf format string characters to accommodate the larger size on x86_64.
Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
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Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
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Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
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Signed-off-by: Dan McGee <dan@archlinux.org>
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This is more efficient than alpm_list_diff since it assumes the two lists
are sorted. And also we get the two sides of the diff.
Even sorting should more efficient than the current list_diff. Sorting the
two lists should be O(n*log(n)+m*log(m)) while the current list_diff is
O(n*m). So I also reimplemented list_diff using list_diff_sorted.
Signed-off-by: Xavier Chantry <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
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Signed-off-by: Dan McGee <dan@archlinux.org>
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* remove obsolete and unused *_cmp helper functions like deppkg_cmp and
_alpm_grp_cmp
* new alpm_list_remove_str function, used 6 times in handle.c
* remove _alpm_prov_cmp / _alpm_db_whatprovides and replace them by
a more general alpm_find_pkg_satisfiers with a cleaner implementation.
before: alpm_db_whatprovides(db, targ)
after: alpm_find_pkg_satisfiers(alpm_db_getpkgcache(db), targ)
* remove satisfycmp and replace alpm_list_find + satisfycmp usage by
_alpm_find_dep_satisfiers.
before : alpm_list_find(_alpm_db_get_pkgcache(db), dep, satisfycmp)
after : _alpm_find_dep_satisfiers(_alpm_db_get_pkgcache(db), dep)
* remove _alpm_pkgname_pkg_cmp, which was used with alpm_list_remove, and
use _alpm_pkg_find + alpm_list_remove with _alpm_pkg_cmp instead.
This commit actually get rids of all complicated and asymmetric _cmp
functions. I first thought these functions were worth it, be caused it
allowed us to reuse list_find and list_remove. But this was at the detriment
of the clarity and also the ease of use of these functions, dangerous
because of their asymmetricity.
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
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* Introduces 'list == NULL' convention for empty list. That means
alpm_list_new isn't needed anymore, so kill it
* Small straightforward fixes in alpm_list.c
Signed-off-by: Nagy Gabor <ngaba@bibl.u-szeged.hu>
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
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This will allow us to utilize this helpful type and functions in places
besides dependency calculations. In addition, remove the public declaration
of pmgraph_t in alpm.h- there is zero need to expose this internal type.
Signed-off-by: Dan McGee <dan@archlinux.org>
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Update the GPL boilerplate to direct people to the GNU website for a copy of
the license, as well as bump all of Judd's copyrights to 2007.
Signed-off-by: Dan McGee <dan@archlinux.org>
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alpm_list_find and alpm_list_find_ptr will now return a void *, and
alpm_list_find_str will return a char *, instead of an int.
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
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This O(1) function joins 2 lists.
Signed-off-by: Nagy Gabor <ngaba@bibl.u-szeged.hu>
Signed-off-by: Dan McGee <dan@archlinux.org>
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The old alpm_list_find was renamed to alpm_list_find_ptr, and a new
alpm_list_find was introduced, which uses the fn comparison-function
parameter in its decision.
Now both alpm_list_find_ptr (a new ptrcmp helper function was also
added) and alpm_list_find_str are just an alpm_list_find call.
Signed-off-by: Nagy Gabor <ngaba@bibl.u-szeged.hu>
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
[Dan: made ptrcmp a static function]
Signed-off-by: Dan McGee <dan@archlinux.org>
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Run the kernel's cleanfile script on all of our source files.
Signed-off-by: Dan McGee <dan@archlinux.org>
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So I spent a good 4 hours tracking a bug down tonight due to
alpm_list_copy_data not actually doing what I expected to do. We can't find
the size of an object we don't know the type of, so rewrite it so we pass
in the size explicitly. This was making _alpm_pkg_dup fail and causing all
sorts of other issues.
Signed-off-by: Dan McGee <dan@archlinux.org>
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Signed-off-by: Dan McGee <dan@archlinux.org>
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Package dup needs to copy all members. Nathan had his implementation, but
I generalized it to this new alpm_list function (and will use it in the
next commit).
CC: Nathan Jones <nathanj@insightbb.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
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Signed-off-by: Nathan Jones <nathanj@insightbb.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
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We had way too much going on with the Doxygen manpage generation. Clean it
up quite a bit by removing directory manpages, using relative paths, not
having a manpage for every single alpm function, and ensuring internal
functions are not documented publicly.
Signed-off-by: Dan McGee <dan@archlinux.org>
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Add some 'const' keywords all over the code to make it a bit more strict on
what you can and can't do with data. This is especially important when we
return pointers to the pacman frontend- ideally this would always be
untouchable data.
Signed-off-by: Dan McGee <dan@archlinux.org>
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Signed-off-by: Dan McGee <dan@archlinux.org>
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We haven't done a whole lot with Doxygen so far, so this updates some of the
things that have changed a lot- namely, the now public exposure of alpm_list.
All functions in this file have now been Doxygen commented, and a few other
things in alpm.c were fixed as well. In addition, the Doxygen config file
was updated.
Signed-off-by: Dan McGee <dan@archlinux.org>
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* Moved entirely to alpm_pkg_get_* accessors, to read data on demand
* Mostly removed the INFRQ_ parameters from outside the be_files backend (making
the backend more extensible in the long run)
* packages created from _alpm_db_scan now have the db and origin set (making
accessors actually work for these packages)
* removed _alpm_db_ensure_pkgcache
* totally revamped the _alpm_checkconflicts function, making it cleaner and
easier to read (and thus fix in the long run) - maintainable code ftw
NOTE: feel free to rename the functions... I couldn't think of anything better
* removed an extra loop in sync.c:find_replacements - no sense in looping over
an entire DB while strcmp'ing the name, when we have get_pkgfromcache
Other:
* package struct "license" -> "licenses"
* Created _alpm_sync_find (duplicate code in some places, find_pkginsync
* Minor const correctness changes along the way
* fixed a couple extra '/' pathing issues (non-issues really)
* removed a duplicate pkg_cmp function
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* Added some provision switching hackery. This could probably use some
refactoring,.. it solves the following case:
pkg1 and pkg2 provide 'foo' and are both installed
pkg3 depends on 'foo' and so lists 'pkg1' in the REQUIREDBY db section
pkg1 is upgraded and no longer provides 'foo'
** This code ensures that the REQUIREDBY of pkg3 is updated to require pkg2
now instead of pkg1
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* Added comment for something I noticed while looking through code
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unbelievable amount of strcmp() calls (25 million) due to the list searching.
This has been reimplemented with a set-intersection scheme, due to the fact
that file lists are always ordered. - NEEDS TESTING
* Minor clean up, "globalized" the str_cmp helper to match the alpm comparison
signature, so we can use it elsewhere.
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* alpm_list_is_in --> alpm_list_find
* alpm_list_is_strin --> alpm_list_find_str
* Flip parameters of both functions to be inline with rest of alpm_list.
First commit, woohoo.
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* Added alpm_list_remove_node for single list node removal
* Proper error checking/output for failed db_read/db_write (missing files)
* Invalid packages (missing files) are now removed from the package cache
* -Qs and -Ss output now look the same
* config.rpath causes errors on one machine I had, so I added it to CVS
* Fixed a "clobbered memory" issue when installing groups - only the outer list
should be free'd, not the contained data
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* renamed pmlist_t -> alpm_list_t
* made alpm_list_t a public type (alpm_list.h header)
* removed additional storage for registered DBs in pacman source
* some code cleanup
* removed duplicate (pm)list_display functions from pacman source
* misc code cleanup
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