From: Zac Medico Date: Sun, 13 May 2012 07:32:04 +0000 (-0700) Subject: depgraph: minimize match_from_list operations X-Git-Tag: v2.2.0_alpha105~39 X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=0903cf2a1544d970b286a3e7e1f3276daa4eab9c;p=portage.git depgraph: minimize match_from_list operations In _iter_match_pkgs, call match_from_list on one cpv at a time, in order to avoid unnecessary match_from_list comparisons on versions that are never yielded from this method. --- diff --git a/pym/_emerge/depgraph.py b/pym/_emerge/depgraph.py index 4d3b04c32..5152d5c03 100644 --- a/pym/_emerge/depgraph.py +++ b/pym/_emerge/depgraph.py @@ -18,8 +18,10 @@ from portage import os, OrderedDict from portage import _unicode_decode, _unicode_encode, _encodings from portage.const import PORTAGE_PACKAGE_ATOM, USER_CONFIG_PATH from portage.dbapi import dbapi +from portage.dbapi.dep_expand import dep_expand from portage.dep import Atom, best_match_to_list, extract_affecting_use, \ - check_required_use, human_readable_required_use, _repo_separator + check_required_use, human_readable_required_use, match_from_list, \ + _repo_separator from portage.eapi import eapi_has_strong_blocks, eapi_has_required_use from portage.exception import InvalidAtom, InvalidDependString, PortageException from portage.output import colorize, create_color_func, \ @@ -3382,60 +3384,12 @@ class depgraph(object): """ db = root_config.trees[self.pkg_tree_map[pkg_type]].dbapi - - if hasattr(db, "xmatch"): - # For portdbapi we match only against the cpv, in order - # to bypass unnecessary cache access for things like IUSE - # and SLOT. Later, we cache the metadata in a Package - # instance, and use that for further matching. This - # optimization is especially relevant since - # pordbapi.aux_get() does not cache calls that have - # myrepo or mytree arguments. - cpv_list = db.xmatch("match-all-cpv-only", atom) - else: - cpv_list = db.match(atom) - - # USE=multislot can make an installed package appear as if - # it doesn't satisfy a slot dependency. Rebuilding the ebuild - # won't do any good as long as USE=multislot is enabled since - # the newly built package still won't have the expected slot. - # Therefore, assume that such SLOT dependencies are already - # satisfied rather than forcing a rebuild. + atom_exp = dep_expand(atom, mydb=db, settings=root_config.settings) + cp_list = db.cp_list(atom_exp.cp) + matched_something = False installed = pkg_type == 'installed' - if installed and not cpv_list and atom.slot: - if "remove" in self._dynamic_config.myparams: - # We need to search the portdbapi, which is not in our - # normal dbs list, in order to find the real SLOT. - portdb = self._frozen_config.trees[root_config.root]["porttree"].dbapi - db_keys = list(portdb._aux_cache_keys) - dbs = [(portdb, "ebuild", False, False, db_keys)] - else: - dbs = self._dynamic_config._filtered_trees[root_config.root]["dbs"] - - for cpv in db.match(atom.cp): - slot_available = False - for other_db, other_type, other_built, \ - other_installed, other_keys in dbs: - try: - if atom.slot == \ - other_db.aux_get(cpv, ["SLOT"])[0]: - slot_available = True - break - except KeyError: - pass - if not slot_available: - continue - inst_pkg = self._pkg(cpv, "installed", - root_config, installed=installed, myrepo = atom.repo) - # Remove the slot from the atom and verify that - # the package matches the resulting atom. - if portage.match_from_list( - atom.without_slot, [inst_pkg]): - yield inst_pkg - return - - if cpv_list: + if cp_list: atom_set = InternalPackageSet(initial_atoms=(atom,), allow_repo=True) if atom.repo is None and hasattr(db, "getRepositories"): @@ -3444,8 +3398,13 @@ class depgraph(object): repo_list = [atom.repo] # descending order - cpv_list.reverse() - for cpv in cpv_list: + cp_list.reverse() + for cpv in cp_list: + # Call match_from_list on one cpv at a time, in order + # to avoid unnecessary match_from_list comparisons on + # versions that are never yielded from this method. + if not match_from_list(atom_exp, [cpv]): + continue for repo in repo_list: try: @@ -3462,14 +3421,61 @@ class depgraph(object): # Make sure that cpv from the current repo satisfies the atom. # This might not be the case if there are several repos with # the same cpv, but different metadata keys, like SLOT. - # Also, for portdbapi, parts of the match that require - # metadata access are deferred until we have cached the - # metadata in a Package instance. + # Also, parts of the match that require metadata access + # are deferred until we have cached the metadata in a + # Package instance. if not atom_set.findAtomForPackage(pkg, modified_use=self._pkg_use_enabled(pkg)): continue + matched_something = True yield pkg + # USE=multislot can make an installed package appear as if + # it doesn't satisfy a slot dependency. Rebuilding the ebuild + # won't do any good as long as USE=multislot is enabled since + # the newly built package still won't have the expected slot. + # Therefore, assume that such SLOT dependencies are already + # satisfied rather than forcing a rebuild. + if not matched_something and installed and atom.slot is not None: + + if "remove" in self._dynamic_config.myparams: + # We need to search the portdbapi, which is not in our + # normal dbs list, in order to find the real SLOT. + portdb = self._frozen_config.trees[root_config.root]["porttree"].dbapi + db_keys = list(portdb._aux_cache_keys) + dbs = [(portdb, "ebuild", False, False, db_keys)] + else: + dbs = self._dynamic_config._filtered_trees[root_config.root]["dbs"] + + cp_list = db.cp_list(atom_exp.cp) + if cp_list: + atom_set = InternalPackageSet( + initial_atoms=(atom.without_slot,), allow_repo=True) + atom_exp_without_slot = atom_exp.without_slot + cp_list.reverse() + for cpv in cp_list: + if not match_from_list(atom_exp_without_slot, [cpv]): + continue + slot_available = False + for other_db, other_type, other_built, \ + other_installed, other_keys in dbs: + try: + if atom.slot == \ + other_db.aux_get(cpv, ["SLOT"])[0]: + slot_available = True + break + except KeyError: + pass + if not slot_available: + continue + inst_pkg = self._pkg(cpv, "installed", + root_config, installed=installed, myrepo=atom.repo) + # Remove the slot from the atom and verify that + # the package matches the resulting atom. + if atom_set.findAtomForPackage(inst_pkg): + yield inst_pkg + return + def _select_pkg_highest_available(self, root, atom, onlydeps=False): cache_key = (root, atom, atom.unevaluated_atom, onlydeps) ret = self._dynamic_config._highest_pkg_cache.get(cache_key)