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This makes it absolutely dead easy to ensure off_t has the same length
in all compilation units. I just spent 2.5 hours bashing my head on an
issue related to this so damn it I'm fixing it for good.
Signed-off-by: Dan McGee <dan@archlinux.org>
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So we only need one copy in the final library, not one copy per time
used. Ensure all necessary includes are in place (especially to get the
right size of off_t each time it is compiled) by including "config.h" in
the new graph.c.
One small adjustment here makes the graph_free code more robust- ensure
we don't have invalid pointers after each iteration by looking at the
parents and children and adjusting accordingly.
Signed-off-by: Dan McGee <dan@archlinux.org>
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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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Change _alpm_graph_new() to use CALLOC to avoid explicit zeroing out of fields
in pmgraph_t.
Signed-off-by: Pang Yan Han <pangyanhan@gmail.com>
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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Signed-off-by: Dan McGee <dan@archlinux.org>
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We have been using unsigned long as a file size type for a while, which
works but isn't quite correct and could easily break. Worse was probably our
use of int in the download callback functions, which could be restrictive
for packages > 2GB in size.
Switch all file size variables to use off_t, which is the preferred type for
file sizes. Note that at least on Linux, all applications compiled against
libalpm must now be sure to use large file support, where _FILE_OFFSET_BITS
is defined to be 64 or there will be some weird issues that crop up.
Signed-off-by: Dan McGee <dan@archlinux.org>
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Using the graph structures that Nagy set up for dependency sorting, we now
do a similar process for deltas. Load up all of the deltas into a graph
object on which we can then apply Dijkstra's algorithm, using the new weight
field of graph struct.
We initialize the nodes weight using the base files that we can use in our
filecache (both filename and md5sum must match). The algorithm then picks
the best path among those that can be resolved.
Note that this algorithm has a few advantages over the old one:
1. It is completely file agnostic. These delta chains do not have to consist
of package files- this could be adopted to do delta-fied DBs.
2. It does not use the local_db anymore, or even care if a package or file
is currently installed. Instead, it only looks in the filecache for files
and packages that match delta chain entries.
Original-work-by: Dan McGee <dan@archlinux.org>
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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