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| author | Nagy Gabor <ngaba@bibl.u-szeged.hu> | 2008-01-10 15:33:09 +0100 |
|---|---|---|
| committer | Dan McGee <dan@archlinux.org> | 2008-01-12 18:05:52 +0100 |
| commit | 633dbeac88316f71f0f5642b4b8b00cc6d262919 (patch) | |
| tree | e907c4e890f88de411d17dac15e27c72c92b5ef9 /lib | |
| parent | e654236db6b01d21cff7c850efedff183dd86b61 (diff) | |
| download | pacman-633dbeac88316f71f0f5642b4b8b00cc6d262919.tar.gz pacman-633dbeac88316f71f0f5642b4b8b00cc6d262919.tar.xz | |
small checkdeps speed-up
In the old code 'alpm_list_diff(_alpm_db_get_pkgcache(db), dblist,
_alpm_pkg_cmp);' was slow.
Signed-off-by: Nagy Gabor <ngaba@bibl.u-szeged.hu>
[Xav: In my opinion, computing both dblist and modified in one for loop also makes
the code clearer, besides being more efficient.
Also renamed joined to targets since I also find that clearer.]
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libalpm/deps.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/lib/libalpm/deps.c b/lib/libalpm/deps.c index 8d77fd46..8c302b69 100644 --- a/lib/libalpm/deps.c +++ b/lib/libalpm/deps.c @@ -226,7 +226,7 @@ alpm_list_t SYMEXPORT *alpm_checkdeps(pmdb_t *db, int reversedeps, alpm_list_t *remove, alpm_list_t *upgrade) { alpm_list_t *i, *j; - alpm_list_t *joined, *dblist; + alpm_list_t *targets, *dblist = NULL, *modified = NULL; alpm_list_t *baddeps = NULL; pmdepmissing_t *miss = NULL; @@ -236,9 +236,16 @@ alpm_list_t SYMEXPORT *alpm_checkdeps(pmdb_t *db, int reversedeps, return(NULL); } - joined = alpm_list_join(alpm_list_copy(remove), alpm_list_copy(upgrade)); - dblist = alpm_list_diff(_alpm_db_get_pkgcache(db), joined, _alpm_pkg_cmp); - alpm_list_free(joined); + targets = alpm_list_join(alpm_list_copy(remove), alpm_list_copy(upgrade)); + for(i = _alpm_db_get_pkgcache(db); i; i = i->next) { + void *pkg = i->data; + if(alpm_list_find(targets, pkg, _alpm_pkg_cmp)) { + modified = alpm_list_add(modified, pkg); + } else { + dblist = alpm_list_add(dblist, pkg); + } + } + alpm_list_free(targets); /* look for unsatisfied dependencies of the upgrade list */ for(i = upgrade; i; i = i->next) { @@ -267,9 +274,6 @@ alpm_list_t SYMEXPORT *alpm_checkdeps(pmdb_t *db, int reversedeps, if(reversedeps) { /* reversedeps handles the backwards dependencies, ie, * the packages listed in the requiredby field. */ - - alpm_list_t *modified = alpm_list_diff(_alpm_db_get_pkgcache(db), dblist, _alpm_pkg_cmp); - for(i = dblist; i; i = i->next) { pmpkg_t *lp = i->data; for(j = alpm_pkg_get_depends(lp); j; j = j->next) { @@ -290,8 +294,8 @@ alpm_list_t SYMEXPORT *alpm_checkdeps(pmdb_t *db, int reversedeps, } } } - alpm_list_free(modified); } + alpm_list_free(modified); alpm_list_free(dblist); return(baddeps); |