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1818 lines
63 KiB
PHP
1818 lines
63 KiB
PHP
<?php
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/*
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* This file is part of Composer.
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*
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* (c) Nils Adermann <naderman@naderman.de>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Composer\DependencyResolver;
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/**
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* @author Nils Adermann <naderman@naderman.de>
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*/
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class Solver
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{
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const RULE_INTERNAL_ALLOW_UPDATE = 1;
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const RULE_JOB_INSTALL = 2;
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const RULE_JOB_REMOVE = 3;
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const RULE_JOB_LOCK = 4;
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const RULE_NOT_INSTALLABLE = 5;
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const RULE_NOTHING_PROVIDES_DEP = 6;
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const RULE_PACKAGE_CONFLICT = 7;
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const RULE_PACKAGE_NOT_EXIST = 8;
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const RULE_PACKAGE_REQUIRES = 9;
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const TYPE_PACKAGE = 0;
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const TYPE_FEATURE = 1;
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const TYPE_UPDATE = 2;
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const TYPE_JOB = 3;
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const TYPE_WEAK = 4;
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const TYPE_LEARNED = 5;
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protected $policy;
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protected $pool;
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protected $installed;
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protected $rules;
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protected $updateAll;
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protected $addedMap = array();
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protected $fixMap = array();
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protected $updateMap = array();
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protected $watches = array();
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protected $removeWatches = array();
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public function __construct(PolicyInterface $policy, Pool $pool, RepositoryInterface $installed)
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{
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$this->policy = $policy;
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$this->pool = $pool;
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$this->installed = $installed;
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$this->rules = array(
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// order matters here! further down => higher priority
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self::TYPE_LEARNED => array(),
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self::TYPE_WEAK => array(),
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self::TYPE_FEATURE => array(),
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self::TYPE_UPDATE => array(),
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self::TYPE_JOB => array(),
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self::TYPE_PACKAGE => array(),
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);
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}
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/**
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* Creates a new rule for the requirements of a package
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*
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* This rule is of the form (-A|B|C), where B and C are the providers of
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* one requirement of the package A.
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*
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* @param Package $package The package with a requirement
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* @param array $providers The providers of the requirement
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* @param int $reason A RULE_* constant describing the reason for
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* generating this rule
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* @param mixed $reasonData Any data, e.g. the requirement name, that goes with
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* the reason
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* @return Rule The generated rule or null if tautological
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*/
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public function createRequireRule(Package $package, array $providers, $reason, $reasonData = null)
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{
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$literals = array(new Literal($package, false));
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foreach ($providers as $provider) {
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// self fulfilling rule?
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if ($provider === $package) {
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return null;
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}
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$literals[] = new Literal($provider, true);
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}
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return new Rule($literals, $reason, $reasonData);
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}
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/**
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* Create a new rule for updating a package
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*
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* If package A1 can be updated to A2 or A3 the rule is (A1|A2|A3).
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*
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* @param Package $package The package to be updated
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* @param array $updates An array of update candidate packages
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* @param int $reason A RULE_* constant describing the reason for
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* generating this rule
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* @param mixed $reasonData Any data, e.g. the package name, that goes with
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* the reason
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* @return Rule The generated rule or null if tautology
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*/
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protected function createUpdateRule(Package $package, array $updates, $reason, $reasonData = null)
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{
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$literals = array(new Literal($package, true));
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foreach ($updates as $update) {
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$literals[] = new Literal($update, true);
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}
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return new Rule($literals, $reason, $reasonData);
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}
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/**
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* Creates a new rule for installing a package
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*
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* The rule is simply (A) for a package A to be installed.
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*
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* @param Package $package The package to be installed
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* @param int $reason A RULE_* constant describing the reason for
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* generating this rule
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* @param mixed $reasonData Any data, e.g. the package name, that goes with
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* the reason
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* @return Rule The generated rule
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*/
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public function createInstallRule(Package $package, $reason, $reasonData = null)
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{
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return new Rule(new Literal($package, true));
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}
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/**
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* Creates a rule to install at least one of a set of packages
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*
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* The rule is (A|B|C) with A, B and C different packages. If the given
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* set of packages is empty an impossible rule is generated.
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*
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* @param array $packages The set of packages to choose from
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* @param int $reason A RULE_* constant describing the reason for
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* generating this rule
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* @param mixed $reasonData Any data, e.g. the package name, that goes with
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* the reason
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* @return Rule The generated rule
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*/
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public function createInstallOneOfRule(array $packages, $reason, $reasonData = null)
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{
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if (empty($packages)) {
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return $this->createImpossibleRule($reason, $reasonData);
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}
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$literals = array();
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foreach ($packages as $package) {
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$literals[] = new Literal($package, true);
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}
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return new Rule($literals, $reason, $reasonData);
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}
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/**
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* Creates a rule to remove a package
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*
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* The rule for a package A is (-A).
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*
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* @param Package $package The package to be removed
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* @param int $reason A RULE_* constant describing the reason for
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* generating this rule
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* @param mixed $reasonData Any data, e.g. the package name, that goes with
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* the reason
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* @return Rule The generated rule
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*/
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public function createRemoveRule(Package $package, $reason, $reasonData = null)
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{
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return new Rule(array(new Literal($package, false)), $reason, $reasonData);
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}
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/**
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* Creates a rule for two conflicting packages
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*
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* The rule for conflicting packages A and B is (-A|-B). A is called the issuer
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* and B the provider.
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*
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* @param Package $issuer The package declaring the conflict
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* @param Package $provider The package causing the conflict
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* @param int $reason A RULE_* constant describing the reason for
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* generating this rule
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* @param mixed $reasonData Any data, e.g. the package name, that goes with
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* the reason
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* @return Rule The generated rule
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*/
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public function createConflictRule(Package $issuer, Package $provider, $reason, $reasonData = null)
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{
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// ignore self conflict
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if ($issuer === $provider) {
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return null;
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}
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return new Rule(array(new Literal($issuer, false), new Literal($provider, false)), $reason, $reasonData);
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}
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/**
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* Intentionally creates a rule impossible to solve
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*
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* The rule is an empty one so it can never be satisfied.
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*
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* @param int $reason A RULE_* constant describing the reason for
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* generating this rule
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* @param mixed $reasonData Any data, e.g. the package name, that goes with
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* the reason
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* @return Rule An empty rule
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*/
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public function createImpossibleRule($reason, $reasonData = null)
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{
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return new Rule(array(), $reason, $reasonData);
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}
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/**
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* Adds a rule unless it duplicates an existing one of any type
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*
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* To be able to directly pass in the result of one of the rule creation
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* methods the rule may also be null to indicate that no rule should be
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* added.
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*
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* @param int $type A TYPE_* constant defining the rule type
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* @param Rule $newRule The rule about to be added
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*/
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private function addRule($type, Rule $newRule = null) {
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if ($newRule) {
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foreach ($this->rules as $rules) {
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foreach ($rules as $rule) {
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if ($rule->equals($newRule)) {
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return;
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}
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}
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}
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$newRule->setType($type);
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$this->rules[$type][] = $newRule;
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}
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}
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public function addRulesForPackage(Package $package)
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{
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$workQueue = new \SPLQueue;
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$workQueue->enqueue($package);
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while (!$workQueue->isEmpty()) {
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$package = $workQueue->dequeue();
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if (isset($this->addedMap[$package->getId()])) {
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continue;
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}
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$this->addedMap[$package->getId()] = true;
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$dontFix = 0;
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if ($this->installed->contains($package) && !isset($this->fixMap[$package->getId()])) {
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$dontFix = 1;
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}
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if (!$dontFix && !$this->policy->installable($this, $this->pool, $this->installed, $package)) {
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$this->addRule(self::TYPE_PACKAGE, $this->createRemoveRule($package, self::RULE_NOT_INSTALLABLE, (string) $package));
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continue;
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}
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foreach ($package->getRequires() as $relation) {
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$possibleRequires = $this->pool->whatProvides($relation->getToPackageName(), $relation->getConstraint());
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// the strategy here is to not insist on dependencies
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// that are already broken. so if we find one provider
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// that was already installed, we know that the
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// dependency was not broken before so we enforce it
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if ($dontFix) {
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$foundInstalled = false;
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foreach ($possibleRequires as $require) {
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if ($this->installed->contains($require)) {
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$foundInstalled = true;
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break;
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}
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}
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// no installed provider found: previously broken dependency => don't add rule
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if (!$foundInstalled) {
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continue;
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}
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}
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$this->addRule(self::TYPE_PACKAGE, $this->createRequireRule($package, $possibleRequires, self::RULE_PACKAGE_REQUIRES, (string) $relation));
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foreach ($possibleRequires as $require) {
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$workQueue->enqueue($require);
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}
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}
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foreach ($package->getConflicts() as $relation) {
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$possibleConflicts = $this->pool->whatProvides($relation->getToPackageName(), $relation->getConstraint());
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foreach ($possibleConflicts as $conflict) {
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if ($dontfix && $this->installed->contains($conflict)) {
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continue;
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}
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$this->addRule(self::TYPE_PACKAGE, $this->createConflictRule($package, $conflict, self::RULE_PACKAGE_CONFLICT, (string) $relation));
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}
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}
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foreach ($package->getRecommends() as $relation) {
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foreach ($this->pool->whatProvides($relation->getToPackageName(), $relation->getConstraint()) as $recommend) {
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$workQueue->enqueue($recommend);
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}
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}
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foreach ($package->getSuggests() as $relation) {
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foreach ($this->pool->whatProvides($relation->getToPackageName(), $relation->getConstraint()) as $suggest) {
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$workQueue->enqueue($suggest);
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}
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}
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}
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}
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/**
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* Adds all rules for all update packages of a given package
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*
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* @param Package $package Rules for this package's updates are to be added
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* @param bool $allowAll Whether downgrades are allowed
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*/
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private function addRulesForUpdatePackages(Package $package, $allowAll)
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{
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$updates = $this->policy->findUpdatePackages($this, $this->pool, $this->installed, $package, $allowAll);
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$this->addRulesForPackage($package);
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foreach ($updates as $update) {
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$this->addRulesForPackage($update);
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}
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}
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/**
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* Sets up watch chains for all rules.
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*
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* Next1/2 always points to the next rule that is watching the same package.
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* The watches array contains rules to start from for each package
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*
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*/
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private function makeWatches()
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{
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foreach ($this->rules as $type => $rules) {
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foreach ($rules as $i => $rule) {
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// skip simple assertions of the form (A) or (-A)
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if ($rule->isAssertion()) {
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continue;
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}
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if (!isset($this->watches[$rule->watch1])) {
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$this->watches[$rule->watch1] = 0;
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}
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$rule->next1 = $this->watches[$rule->watch1];
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$this->watches[$rule->watch1] = $rule;
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if (!isset($this->watches[$rule->watch2])) {
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$this->watches[$rule->watch2] = 0;
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}
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$rule->next2 = $this->watches[$rule->watch2];
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$this->watches[$rule->watch2] = $rule;
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}
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}
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}
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private function findDecisionRule(Package $package)
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{
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foreach ($this->decisionQueue as $i => $literal) {
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if ($package === $literal->getPackage()) {
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return $this->decisionQueueWhy[$i];
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}
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}
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return null;
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}
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private function makeAssertionRuleDecisions()
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{
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// do we need to decide a SYSTEMSOLVABLE at level 1?
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foreach ($this->rules as $type => $rules) {
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if (self::TYPE_WEAK === $type) {
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continue;
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}
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foreach ($rules as $rule) {
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if (!$rule->isAssertion() || $rule->isDisabled()) {
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continue;
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}
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$literals = $rule->getLiterals();
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$literal = $literals[0];
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if (!$this->decided($literal->getPackage())) {
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}
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if ($this->decisionsSatisfy($literal)) {
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continue;
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}
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// found a conflict
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if (self::TYPE_LEARNED === $type) {
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$rule->disable();
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}
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$conflict = $this->findDecisionRule($literal->getPackage());
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// todo: handle conflict with systemsolvable?
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if (self::TYPE_PACKAGE === $conflict->getType()) {
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}
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}
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}
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foreach ($this->rules[self::TYPE_WEAK] as $rule) {
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if (!$rule->isAssertion() || $rule->isDisabled()) {
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continue;
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}
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if ($this->decisionsSatisfy($literals[0])) {
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continue;
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}
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// conflict, but this is a weak rule => disable
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$rule->disable();
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}
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}
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public function solve(Request $request)
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{
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$this->jobs = $request->getJobs();
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$installedPackages = $this->installed->getPackages();
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foreach ($this->jobs as $job) {
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switch ($job['cmd']) {
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case 'update-all':
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foreach ($installedPackages as $package) {
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$this->updateMap[$package->getId()] = true;
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}
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break;
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case 'fix-all':
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foreach ($installedPackages as $package) {
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$this->fixMap[$package->getId()] = true;
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}
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break;
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}
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foreach ($job['packages'] as $package) {
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switch ($job['cmd']) {
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case 'fix':
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if ($this->installed->contains($package)) {
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$this->fixMap[$package->getId()] = true;
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}
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break;
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case 'update':
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if ($this->installed->contains($package)) {
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$this->updateMap[$package->getId()] = true;
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}
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break;
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}
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}
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}
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foreach ($installedPackages as $package) {
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$this->addRulesForPackage($package);
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}
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foreach ($installedPackages as $package) {
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$this->addRulesForUpdatePackages($package, true);
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}
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foreach ($this->jobs as $job) {
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foreach ($job['packages'] as $package) {
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switch ($job['cmd']) {
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case 'install':
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$this->installCandidateMap[$package->getId()] = true;
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$this->addRulesForPackage($package);
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break;
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}
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}
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}
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// solver_addrpmrulesforweak(solv, &addedmap);
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/*
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* first pass done, we now have all the rpm rules we need.
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* unify existing rules before going over all job rules and
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* policy rules.
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* at this point the system is always solvable,
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* as an empty system (remove all packages) is a valid solution
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*/
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// solver_unifyrules(solv); /* remove duplicate rpm rules */
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// no idea what this is
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// /* create dup maps if needed. We need the maps early to create our
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// * update rules */
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// if (hasdupjob)
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// solver_createdupmaps(solv);
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foreach ($installedPackages as $package) {
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// create a feature rule which allows downgrades
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$updates = $this->policy->findUpdatePackages($this, $this->pool, $this->installed, $package, true);
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$featureRule = $this->createUpdateRule($package, $updates, self::RULE_INTERNAL_ALLOW_UPDATE, (string) $package);
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// create an update rule which does not allow downgrades
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$updates = $this->policy->findUpdatePackages($this, $this->pool, $this->installed, $package, false);
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$rule = $this->createUpdateRule($package, $updates, self::RULE_INTERNAL_ALLOW_UPDATE, (string) $package);
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if ($rule->equals($featureRule)) {
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if ($this->policy->allowUninstall()) {
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$this->addRule(self::TYPE_WEAK, $featureRule);
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} else {
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$this->addRule(self::TYPE_UPDATE, $rule);
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}
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} else if ($this->policy->allowUninstall()) {
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$this->addRule(self::TYPE_WEAK, $featureRule);
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$this->addRule(self::TYPE_WEAK, $rule);
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}
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}
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foreach ($this->jobs as $job) {
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switch ($job['cmd']) {
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case 'install':
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$rule = $this->createInstallOneOfRule($job['packages'], self::RULE_JOB_INSTALL, $job['packageName']);
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$this->addRule(self::TYPE_JOB, $rule);
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//$this->ruleToJob[$rule] = $job;
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break;
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case 'remove':
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// remove all packages with this name including uninstalled
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// ones to make sure none of them are picked as replacements
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// todo: cleandeps
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foreach ($job['packages'] as $package) {
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$rule = $this->createRemoveRule($package, self::RULE_JOB_REMOVE);
|
|
$this->addRule(self::TYPE_JOB, $rule);
|
|
//$this->ruleToJob[$rule] = $job;
|
|
}
|
|
break;
|
|
case 'lock':
|
|
foreach ($job['packages'] as $package) {
|
|
if ($this->installed->contains($package)) {
|
|
$rule = $this->createInstallRule($package, self::RULE_JOB_LOCK);
|
|
} else {
|
|
$rule = $this->createRemoveRule($package, self::RULE_JOB_LOCK);
|
|
}
|
|
$this->addRule(self::TYPE_JOB, $rule);
|
|
//$this->ruleToJob[$rule] = $job;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// solver_addchoicerules(solv);
|
|
|
|
$this->makeWatches();
|
|
|
|
/* disable update rules that conflict with our job */
|
|
//solver_disablepolicyrules(solv);
|
|
|
|
/* make decisions based on job/update assertions */
|
|
$this->makeAssertionRuleDecisions();
|
|
|
|
$installRecommended = 0;
|
|
$this->runSat(true, $installRecommended);
|
|
|
|
//findrecommendedsuggested(solv);
|
|
//solver_prepare_solutions(solv);
|
|
//transaction_calculate(&solv->trans, &solv->decisionq, &solv->noobsoletes);
|
|
|
|
}
|
|
|
|
public function printRules()
|
|
{
|
|
print "\n";
|
|
foreach ($this->rules as $type => $rules) {
|
|
print $type . ": ";
|
|
foreach ($rules as $rule) {
|
|
print $rule;
|
|
}
|
|
print "\n";
|
|
}
|
|
}
|
|
|
|
protected $decisionQueue = array();
|
|
protected $propagateIndex;
|
|
protected $decisionMap = array();
|
|
protected $branches = array();
|
|
|
|
protected function addDecision(Literal $l, $level)
|
|
{
|
|
if ($l->isWanted()) {
|
|
$this->decisionMap[$l->getPackageId()] = $level;
|
|
} else {
|
|
$this->decisionMap[$l->getPackageId()] = -$level;
|
|
}
|
|
}
|
|
|
|
protected function decisionsContain(Literal $l)
|
|
{
|
|
return (isset($this->decisionMap[$l->getPackageId()]) && (
|
|
$this->decisionMap[$l->getPackageId()] > 0 && $l->isWanted() ||
|
|
$this->decisionMap[$l->getPackageId()] < 0 && !$l->isWanted()
|
|
));
|
|
}
|
|
|
|
protected function decisionsSatisfy(Literal $l)
|
|
{
|
|
return ($l->isWanted() && isset($this->decisionMap[$l->getPackageId()]) && $this->decisionMap[$l->getPackageId()] > 0) ||
|
|
(!$l->isWanted() && (!isset($this->decisionMap[$l->getPackageId()]) || $this->decisionMap[$l->getPackageId()] < 0));
|
|
}
|
|
|
|
protected function decisionsConflict(Literal $l)
|
|
{
|
|
return (isset($this->decisionMap[$l->getPackageId()]) && (
|
|
$this->decisionMap[$l->getPackageId()] > 0 && !$l->isWanted() ||
|
|
$this->decisionMap[$l->getPackageId()] < 0 && $l->isWanted()
|
|
));
|
|
}
|
|
|
|
protected function decided(Package $p)
|
|
{
|
|
return isset($this->decisionMap[$p->getId()]);
|
|
}
|
|
|
|
protected function undecided(Package $p)
|
|
{
|
|
return !isset($this->decisionMap[$p->getId()]);
|
|
}
|
|
|
|
protected function decidedInstall(Package $p) {
|
|
return isset($this->decisionMap[$p->getId()]) && $this->decisionMap[$p->getId()] > 0;
|
|
}
|
|
|
|
protected function decidedRemove(Package $p) {
|
|
return isset($this->decisionMap[$p->getId()]) && $this->decisionMap[$p->getId()] < 0;
|
|
}
|
|
|
|
/**
|
|
* Makes a decision and propagates it to all rules.
|
|
*
|
|
* Evaluates each term affected by the decision (linked through watches)
|
|
* If we find unit rules we make new decisions based on them
|
|
*
|
|
* @return Rule|null A rule on conflict, otherwise null.
|
|
*/
|
|
protected function propagate($level)
|
|
{
|
|
while ($this->propagateIndex < count($this->decisionQueue)) {
|
|
// we invert the decided literal here, example:
|
|
// A was decided => (-A|B) now requires B to be true, so we look for
|
|
// rules which are fulfilled by -A, rather than A.
|
|
|
|
$literal = $this->decisionQueue[$this->propagateIndex]->inverted();
|
|
|
|
$this->propagateIndex++;
|
|
|
|
// /* foreach rule where 'pkg' is now FALSE */
|
|
//for (rp = watches + pkg; *rp; rp = next_rp)
|
|
for ($rule = $this->watches[$literal->getId()]; $rule !== null; $rule = $nextRule) {
|
|
$nextRule = $rule->getNext($literal);
|
|
|
|
if ($rule->isDisabled()) {
|
|
continue;
|
|
}
|
|
|
|
$otherWatch = $rule->getOtherWatch($literal);
|
|
|
|
if ($this->decisionsContain($otherWatch)) {
|
|
continue;
|
|
}
|
|
|
|
$ruleLiterals = $rule->getLiterals();
|
|
|
|
if (sizeof($ruleLiterals) > 2) {
|
|
foreach ($ruleLiterals as $ruleLiteral) {
|
|
if (!$otherWatch->equals($ruleLiteral) &&
|
|
!$this->decisionsConflict($ruleLiteral)) {
|
|
|
|
|
|
if ($literal->equals($rule->getWatch1())) {
|
|
$rule->setWatch1($ruleLiteral);
|
|
$rule->setNext1($rule);
|
|
} else {
|
|
$rule->setWatch2($ruleLiteral);
|
|
$rule->setNext2($rule);
|
|
}
|
|
|
|
$this->watches[$ruleLiteral->getId()] = $rule;
|
|
continue 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
// yay, we found a unit clause! try setting it to true
|
|
if ($this->decisionsConflict($otherWatch)) {
|
|
return $rule;
|
|
}
|
|
|
|
$this->addDecision($otherWatch, $level);
|
|
|
|
$this->decisionQueue[] = $otherWatch;
|
|
$this->decisionQueueWhy[] = $rule;
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
private function setPropagateLearn($level, Literal $literal, $disableRules, Rule $rule)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
private function selectAndInstall($level, array $decisionQueue, $disableRules, Rule $rule)
|
|
{
|
|
// choose best package to install from decisionQueue
|
|
$literals = $this->policy->selectPreferedPackages($decisionQueue);
|
|
|
|
// if there are multiple candidates, then branch
|
|
if (count($literals) > 1) {
|
|
foreach ($literals as $i => $literal) {
|
|
if (0 !== $i) {
|
|
$this->branches[] = array($literal, $level);
|
|
}
|
|
}
|
|
}
|
|
|
|
return $this->setPropagateLearn($level, $literals[0], $disableRules, $rule);
|
|
}
|
|
|
|
private function runSat($disableRules = true, $installRecommended = false)
|
|
{
|
|
$this->propagateIndex = 0;
|
|
|
|
// /*
|
|
// * here's the main loop:
|
|
// * 1) propagate new decisions (only needed once)
|
|
// * 2) fulfill jobs
|
|
// * 3) try to keep installed packages
|
|
// * 4) fulfill all unresolved rules
|
|
// * 5) install recommended packages
|
|
// * 6) minimalize solution if we had choices
|
|
// * if we encounter a problem, we rewind to a safe level and restart
|
|
// * with step 1
|
|
// */
|
|
|
|
$decisionQueue = array();
|
|
$decisionSupplementQueue = array();
|
|
$disableRules = array();
|
|
|
|
$level = 1;
|
|
$systemLevel = $level + 1;
|
|
$minimizationsteps = 0;
|
|
$installedPos = 0;
|
|
|
|
$this->installedPackages = array_values($this->installed->getPackages());
|
|
|
|
while (true) {
|
|
|
|
$conflictRule = $this->propagate($level);
|
|
if ($conflictRule !== null) {
|
|
// if (analyze_unsolvable(solv, r, disablerules))
|
|
if ($this->analyzeUnsolvable($conflictRule, $disableRules)) {
|
|
continue;
|
|
} else {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// handle job rules
|
|
if ($level < $systemLevel) {
|
|
$ruleIndex = 0;
|
|
foreach ($this->rules[self::TYPE_JOB] as $ruleIndex => $rule) {
|
|
if ($rule->isEnabled()) {
|
|
$decisionQueue = array();
|
|
$noneSatisfied = true;
|
|
|
|
foreach ($rule->getLiterals() as $literal) {
|
|
if ($this->decisionsSatisfy($literal)) {
|
|
$noneSatisfied = false;
|
|
break;
|
|
}
|
|
$decisionQueue[] = $literal;
|
|
}
|
|
|
|
if ($noneSatisfied && count($decisionQueue)) {
|
|
// prune all update packages until installed version
|
|
// except for requested updates
|
|
if (count($this->installed) != count($this->updateMap)) {
|
|
$prunedQueue = array();
|
|
foreach ($decisionQueue as $literal) {
|
|
if ($this->installed->contains($literal->getPackage())) {
|
|
$prunedQueue[] = $literal;
|
|
if (isset($this->updateMap[$literal->getPackageId()])) {
|
|
$prunedQueue = $decisionQueue;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
$decisionQueue = $prunedQueue;
|
|
}
|
|
}
|
|
|
|
if ($noneSatisfied && count($decisionQueue)) {
|
|
|
|
$oLevel = $level;
|
|
$level = $this->selectAndInstall($level, $decisionQueue, $disableRules, $rule);
|
|
|
|
if (0 === $level) {
|
|
return;
|
|
}
|
|
if ($level <= $oLevel) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
$systemLevel = $level + 1;
|
|
|
|
// jobs left
|
|
if ($ruleIndex + 1 < count($this->rules[Solver::TYPE_JOB])) {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// handle installed packages
|
|
if ($level < $systemLevel) {
|
|
// use two passes if any packages are being updated
|
|
// -> better user experience
|
|
for ($pass = (count($this->updateMap)) ? 0 : 1; $pass < 2; $pass++) {
|
|
$passLevel = $level;
|
|
for ($i = $installedPos, $n = 0; $n < count($this->installedPackages); $i++, $n++) {
|
|
$repeat = false;
|
|
|
|
if ($i == count($this->installedPackages)) {
|
|
$i = 0;
|
|
}
|
|
$literal = new Literal($this->installedPackages[$i], true);
|
|
|
|
if ($this->decisionsContain($literal)) {
|
|
continue;
|
|
}
|
|
|
|
// only process updates in first pass
|
|
if (0 === $pass && !isset($this->updateMap[$literal->getPackageId()])) {
|
|
continue;
|
|
}
|
|
|
|
$rule = null;
|
|
if (isset($this->rules[Solver::TYPE_UPDATE][$literal->getPackageId()])) {
|
|
$rule = $this->rules[Solver::TYPE_UPDATE][$literal->getPackageId()];
|
|
}
|
|
|
|
if ((!$rule || $rule->isDisabled()) && isset($this->rules[Solver::TYPE_FEATURE][$literal->getPackageId()])) {
|
|
$rule = $this->rules[Solver::TYPE_FEATURE][$literal->getPackageId()];
|
|
}
|
|
|
|
if (!$rule || $rule->isDisabled()) {
|
|
continue;
|
|
}
|
|
|
|
$decisionQueue = array();
|
|
if (!isset($this->noUpdate[$literal->getPackageId()]) && (
|
|
$this->decidedRemove($literal->getPackage()) ||
|
|
isset($this->updateMap[$literal->getPackageId()]) ||
|
|
!$literal->equals($rule->getFirstLiteral())
|
|
)) {
|
|
foreach ($rule->getLiterals() as $ruleLiteral) {
|
|
if ($this->decidedInstall($ruleLiteral->getPackage())) {
|
|
// already fulfilled
|
|
break;
|
|
}
|
|
if ($this->undecided($ruleLiteral->getPackage())) {
|
|
$decisionQueue[] = $ruleLiteral;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (sizeof($decisionQueue)) {
|
|
$oLevel = $level;
|
|
$level = $this->selectAndInstall($level, $decisionQueue, $disableRules, $rule);
|
|
|
|
if (0 === $level) {
|
|
return;
|
|
}
|
|
|
|
if ($level <= $oLevel) {
|
|
$repeat = true;
|
|
}
|
|
}
|
|
|
|
// still undecided? keep package.
|
|
if (!$repeat && $this->undecided($literal->getPackage())) {
|
|
$oLevel = $level;
|
|
if (isset($this->cleanDepsMap[$literal->getPackageId()])) {
|
|
// clean deps removes package
|
|
$level = $this->setPropagateLearn($level, $literal->invert(), $disableRules, null);
|
|
} else {
|
|
// ckeeping package
|
|
$level = $this->setPropagateLearn($level, $literal, $disableRules, $rule);
|
|
}
|
|
|
|
|
|
if (0 === $level) {
|
|
return;
|
|
}
|
|
|
|
if ($level <= $oLevel) {
|
|
$repeat = true;
|
|
}
|
|
}
|
|
|
|
if ($repeat) {
|
|
if (1 === $level || $level < $passLevel) {
|
|
// trouble
|
|
break;
|
|
}
|
|
if ($level < $oLevel) {
|
|
// redo all
|
|
$n = 0;
|
|
}
|
|
|
|
// repeat
|
|
$i--;
|
|
$n--;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if ($n < count($this->installedPackages)) {
|
|
$installedPos = $i; // retry this problem next time
|
|
break;
|
|
}
|
|
|
|
$installedPos = 0;
|
|
}
|
|
|
|
$systemlevel = $level + 1;
|
|
|
|
if ($pass < 2) {
|
|
// had trouble => retry
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if ($level < $systemLevel) {
|
|
$systemLevel = $level;
|
|
}
|
|
|
|
foreach ($this->rules as $ruleType => $rules) {
|
|
foreach ($rules as $rule) {
|
|
if ($rule->isEnabled()) {
|
|
$decisionQueue = array();
|
|
}
|
|
}
|
|
}
|
|
$this->printRules();
|
|
//
|
|
// /*
|
|
// * decide
|
|
// */
|
|
// POOL_DEBUG(SAT_DEBUG_POLICY, "deciding unresolved rules\n");
|
|
// for (i = 1, n = 1; n < solv->nrules; i++, n++)
|
|
// {
|
|
// if (i == solv->nrules)
|
|
// i = 1;
|
|
// r = solv->rules + i;
|
|
// if (r->d < 0) /* ignore disabled rules */
|
|
// continue;
|
|
// queue_empty(&dq);
|
|
// if (r->d == 0)
|
|
// {
|
|
// /* binary or unary rule */
|
|
// /* need two positive undecided literals */
|
|
// if (r->p < 0 || r->w2 <= 0)
|
|
// continue;
|
|
// if (solv->decisionmap[r->p] || solv->decisionmap[r->w2])
|
|
// continue;
|
|
// queue_push(&dq, r->p);
|
|
// queue_push(&dq, r->w2);
|
|
// }
|
|
// else
|
|
// {
|
|
// /* make sure that
|
|
// * all negative literals are installed
|
|
// * no positive literal is installed
|
|
// * i.e. the rule is not fulfilled and we
|
|
// * just need to decide on the positive literals
|
|
// */
|
|
// if (r->p < 0)
|
|
// {
|
|
// if (solv->decisionmap[-r->p] <= 0)
|
|
// continue;
|
|
// }
|
|
// else
|
|
// {
|
|
// if (solv->decisionmap[r->p] > 0)
|
|
// continue;
|
|
// if (solv->decisionmap[r->p] == 0)
|
|
// queue_push(&dq, r->p);
|
|
// }
|
|
// dp = pool->whatprovidesdata + r->d;
|
|
// while ((p = *dp++) != 0)
|
|
// {
|
|
// if (p < 0)
|
|
// {
|
|
// if (solv->decisionmap[-p] <= 0)
|
|
// break;
|
|
// }
|
|
// else
|
|
// {
|
|
// if (solv->decisionmap[p] > 0)
|
|
// break;
|
|
// if (solv->decisionmap[p] == 0)
|
|
// queue_push(&dq, p);
|
|
// }
|
|
// }
|
|
// if (p)
|
|
// continue;
|
|
// }
|
|
// IF_POOLDEBUG (SAT_DEBUG_PROPAGATE)
|
|
// {
|
|
// POOL_DEBUG(SAT_DEBUG_PROPAGATE, "unfulfilled ");
|
|
// solver_printruleclass(solv, SAT_DEBUG_PROPAGATE, r);
|
|
// }
|
|
// /* dq.count < 2 cannot happen as this means that
|
|
// * the rule is unit */
|
|
// assert(dq.count > 1);
|
|
//
|
|
// olevel = level;
|
|
// level = selectandinstall(solv, level, &dq, disablerules, r - solv->rules);
|
|
// if (level == 0)
|
|
// {
|
|
// queue_free(&dq);
|
|
// queue_free(&dqs);
|
|
// return;
|
|
// }
|
|
// if (level < systemlevel || level == 1)
|
|
// break; /* trouble */
|
|
// /* something changed, so look at all rules again */
|
|
// n = 0;
|
|
// }
|
|
//
|
|
// if (n != solv->nrules) /* ran into trouble, restart */
|
|
// continue;
|
|
//
|
|
// /* at this point we have a consistent system. now do the extras... */
|
|
//
|
|
}
|
|
}
|
|
|
|
// void
|
|
// solver_run_sat(Solver *solv, int disablerules, int doweak)
|
|
// {
|
|
// Queue dq; /* local decisionqueue */
|
|
// Queue dqs; /* local decisionqueue for supplements */
|
|
// int systemlevel;
|
|
// int level, olevel;
|
|
// Rule *r;
|
|
// int i, j, n;
|
|
// Solvable *s;
|
|
// Pool *pool = solv->pool;
|
|
// Id p, *dp;
|
|
// int minimizationsteps;
|
|
// int installedpos = solv->installed ? solv->installed->start : 0;
|
|
//
|
|
// IF_POOLDEBUG (SAT_DEBUG_RULE_CREATION)
|
|
// {
|
|
// POOL_DEBUG (SAT_DEBUG_RULE_CREATION, "number of rules: %d\n", solv->nrules);
|
|
// for (i = 1; i < solv->nrules; i++)
|
|
// solver_printruleclass(solv, SAT_DEBUG_RULE_CREATION, solv->rules + i);
|
|
// }
|
|
//
|
|
// POOL_DEBUG(SAT_DEBUG_SOLVER, "initial decisions: %d\n", solv->decisionq.count);
|
|
//
|
|
// IF_POOLDEBUG (SAT_DEBUG_SCHUBI)
|
|
// solver_printdecisions(solv);
|
|
//
|
|
// /* start SAT algorithm */
|
|
// level = 1;
|
|
// systemlevel = level + 1;
|
|
// POOL_DEBUG(SAT_DEBUG_SOLVER, "solving...\n");
|
|
//
|
|
// queue_init(&dq);
|
|
// queue_init(&dqs);
|
|
//
|
|
// /*
|
|
// * here's the main loop:
|
|
// * 1) propagate new decisions (only needed once)
|
|
// * 2) fulfill jobs
|
|
// * 3) try to keep installed packages
|
|
// * 4) fulfill all unresolved rules
|
|
// * 5) install recommended packages
|
|
// * 6) minimalize solution if we had choices
|
|
// * if we encounter a problem, we rewind to a safe level and restart
|
|
// * with step 1
|
|
// */
|
|
//
|
|
// minimizationsteps = 0;
|
|
// for (;;)
|
|
// {
|
|
// /*
|
|
// * initial propagation of the assertions
|
|
// */
|
|
// if (level == 1)
|
|
// {
|
|
// POOL_DEBUG(SAT_DEBUG_PROPAGATE, "propagating (propagate_index: %d; size decisionq: %d)...\n", solv->propagate_index, solv->decisionq.count);
|
|
// if ((r = propagate(solv, level)) != 0)
|
|
// {
|
|
// if (analyze_unsolvable(solv, r, disablerules))
|
|
// continue;
|
|
// queue_free(&dq);
|
|
// queue_free(&dqs);
|
|
// return;
|
|
// }
|
|
// }
|
|
//
|
|
// /*
|
|
// * resolve jobs first
|
|
// */
|
|
// if (level < systemlevel)
|
|
// {
|
|
// POOL_DEBUG(SAT_DEBUG_SOLVER, "resolving job rules\n");
|
|
// for (i = solv->jobrules, r = solv->rules + i; i < solv->jobrules_end; i++, r++)
|
|
// {
|
|
// Id l;
|
|
// if (r->d < 0) /* ignore disabled rules */
|
|
// continue;
|
|
// queue_empty(&dq);
|
|
// FOR_RULELITERALS(l, dp, r)
|
|
// {
|
|
// if (l < 0)
|
|
// {
|
|
// if (solv->decisionmap[-l] <= 0)
|
|
// break;
|
|
// }
|
|
// else
|
|
// {
|
|
// if (solv->decisionmap[l] > 0)
|
|
// break;
|
|
// if (solv->decisionmap[l] == 0)
|
|
// queue_push(&dq, l);
|
|
// }
|
|
// }
|
|
// if (l || !dq.count)
|
|
// continue;
|
|
// /* prune to installed if not updating */
|
|
// if (dq.count > 1 && solv->installed && !solv->updatemap_all)
|
|
// {
|
|
// int j, k;
|
|
// for (j = k = 0; j < dq.count; j++)
|
|
// {
|
|
// Solvable *s = pool->solvables + dq.elements[j];
|
|
// if (s->repo == solv->installed)
|
|
// {
|
|
// dq.elements[k++] = dq.elements[j];
|
|
// if (solv->updatemap.size && MAPTST(&solv->updatemap, dq.elements[j] - solv->installed->start))
|
|
// {
|
|
// k = 0; /* package wants to be updated, do not prune */
|
|
// break;
|
|
// }
|
|
// }
|
|
// }
|
|
// if (k)
|
|
// dq.count = k;
|
|
// }
|
|
// olevel = level;
|
|
// level = selectandinstall(solv, level, &dq, disablerules, i);
|
|
// if (level == 0)
|
|
// {
|
|
// queue_free(&dq);
|
|
// queue_free(&dqs);
|
|
// return;
|
|
// }
|
|
// if (level <= olevel)
|
|
// break;
|
|
// }
|
|
// systemlevel = level + 1;
|
|
// if (i < solv->jobrules_end)
|
|
// continue;
|
|
// }
|
|
//
|
|
//
|
|
// /*
|
|
// * installed packages
|
|
// */
|
|
// if (level < systemlevel && solv->installed && solv->installed->nsolvables && !solv->installed->disabled)
|
|
// {
|
|
// Repo *installed = solv->installed;
|
|
// int pass;
|
|
//
|
|
// POOL_DEBUG(SAT_DEBUG_SOLVER, "resolving installed packages\n");
|
|
// /* we use two passes if we need to update packages
|
|
// * to create a better user experience */
|
|
// for (pass = solv->updatemap.size ? 0 : 1; pass < 2; pass++)
|
|
// {
|
|
// int passlevel = level;
|
|
// /* start with installedpos, the position that gave us problems last time */
|
|
// for (i = installedpos, n = installed->start; n < installed->end; i++, n++)
|
|
// {
|
|
// Rule *rr;
|
|
// Id d;
|
|
//
|
|
// if (i == installed->end)
|
|
// i = installed->start;
|
|
// s = pool->solvables + i;
|
|
// if (s->repo != installed)
|
|
// continue;
|
|
//
|
|
// if (solv->decisionmap[i] > 0)
|
|
// continue;
|
|
// if (!pass && solv->updatemap.size && !MAPTST(&solv->updatemap, i - installed->start))
|
|
// continue; /* updates first */
|
|
// r = solv->rules + solv->updaterules + (i - installed->start);
|
|
// rr = r;
|
|
// if (!rr->p || rr->d < 0) /* disabled -> look at feature rule */
|
|
// rr -= solv->installed->end - solv->installed->start;
|
|
// if (!rr->p) /* identical to update rule? */
|
|
// rr = r;
|
|
// if (!rr->p)
|
|
// continue; /* orpaned package */
|
|
//
|
|
// /* XXX: noupdate check is probably no longer needed, as all jobs should
|
|
// * already be satisfied */
|
|
// /* Actually we currently still need it because of erase jobs */
|
|
// /* if noupdate is set we do not look at update candidates */
|
|
// queue_empty(&dq);
|
|
// if (!MAPTST(&solv->noupdate, i - installed->start) && (solv->decisionmap[i] < 0 || solv->updatemap_all || (solv->updatemap.size && MAPTST(&solv->updatemap, i - installed->start)) || rr->p != i))
|
|
// {
|
|
// if (solv->noobsoletes.size && solv->multiversionupdaters
|
|
// && (d = solv->multiversionupdaters[i - installed->start]) != 0)
|
|
// {
|
|
// /* special multiversion handling, make sure best version is chosen */
|
|
// queue_push(&dq, i);
|
|
// while ((p = pool->whatprovidesdata[d++]) != 0)
|
|
// if (solv->decisionmap[p] >= 0)
|
|
// queue_push(&dq, p);
|
|
// policy_filter_unwanted(solv, &dq, POLICY_MODE_CHOOSE);
|
|
// p = dq.elements[0];
|
|
// if (p != i && solv->decisionmap[p] == 0)
|
|
// {
|
|
// rr = solv->rules + solv->featurerules + (i - solv->installed->start);
|
|
// if (!rr->p) /* update rule == feature rule? */
|
|
// rr = rr - solv->featurerules + solv->updaterules;
|
|
// dq.count = 1;
|
|
// }
|
|
// else
|
|
// dq.count = 0;
|
|
// }
|
|
// else
|
|
// {
|
|
// /* update to best package */
|
|
// FOR_RULELITERALS(p, dp, rr)
|
|
// {
|
|
// if (solv->decisionmap[p] > 0)
|
|
// {
|
|
// dq.count = 0; /* already fulfilled */
|
|
// break;
|
|
// }
|
|
// if (!solv->decisionmap[p])
|
|
// queue_push(&dq, p);
|
|
// }
|
|
// }
|
|
// }
|
|
// /* install best version */
|
|
// if (dq.count)
|
|
// {
|
|
// olevel = level;
|
|
// level = selectandinstall(solv, level, &dq, disablerules, rr - solv->rules);
|
|
// if (level == 0)
|
|
// {
|
|
// queue_free(&dq);
|
|
// queue_free(&dqs);
|
|
// return;
|
|
// }
|
|
// if (level <= olevel)
|
|
// {
|
|
// if (level == 1 || level < passlevel)
|
|
// break; /* trouble */
|
|
// if (level < olevel)
|
|
// n = installed->start; /* redo all */
|
|
// i--;
|
|
// n--;
|
|
// continue;
|
|
// }
|
|
// }
|
|
// /* if still undecided keep package */
|
|
// if (solv->decisionmap[i] == 0)
|
|
// {
|
|
// olevel = level;
|
|
// if (solv->cleandepsmap.size && MAPTST(&solv->cleandepsmap, i - installed->start))
|
|
// {
|
|
// POOL_DEBUG(SAT_DEBUG_POLICY, "cleandeps erasing %s\n", solvid2str(pool, i));
|
|
// level = setpropagatelearn(solv, level, -i, disablerules, 0);
|
|
// }
|
|
// else
|
|
// {
|
|
// POOL_DEBUG(SAT_DEBUG_POLICY, "keeping %s\n", solvid2str(pool, i));
|
|
// level = setpropagatelearn(solv, level, i, disablerules, r - solv->rules);
|
|
// }
|
|
// if (level == 0)
|
|
// {
|
|
// queue_free(&dq);
|
|
// queue_free(&dqs);
|
|
// return;
|
|
// }
|
|
// if (level <= olevel)
|
|
// {
|
|
// if (level == 1 || level < passlevel)
|
|
// break; /* trouble */
|
|
// if (level < olevel)
|
|
// n = installed->start; /* redo all */
|
|
// i--;
|
|
// n--;
|
|
// continue; /* retry with learnt rule */
|
|
// }
|
|
// }
|
|
// }
|
|
// if (n < installed->end)
|
|
// {
|
|
// installedpos = i; /* retry problem solvable next time */
|
|
// break; /* ran into trouble */
|
|
// }
|
|
// installedpos = installed->start; /* reset installedpos */
|
|
// }
|
|
// systemlevel = level + 1;
|
|
// if (pass < 2)
|
|
// continue; /* had trouble, retry */
|
|
// }
|
|
//
|
|
// if (level < systemlevel)
|
|
// systemlevel = level;
|
|
//
|
|
// /*
|
|
// * decide
|
|
// */
|
|
// POOL_DEBUG(SAT_DEBUG_POLICY, "deciding unresolved rules\n");
|
|
// for (i = 1, n = 1; n < solv->nrules; i++, n++)
|
|
// {
|
|
// if (i == solv->nrules)
|
|
// i = 1;
|
|
// r = solv->rules + i;
|
|
// if (r->d < 0) /* ignore disabled rules */
|
|
// continue;
|
|
// queue_empty(&dq);
|
|
// if (r->d == 0)
|
|
// {
|
|
// /* binary or unary rule */
|
|
// /* need two positive undecided literals */
|
|
// if (r->p < 0 || r->w2 <= 0)
|
|
// continue;
|
|
// if (solv->decisionmap[r->p] || solv->decisionmap[r->w2])
|
|
// continue;
|
|
// queue_push(&dq, r->p);
|
|
// queue_push(&dq, r->w2);
|
|
// }
|
|
// else
|
|
// {
|
|
// /* make sure that
|
|
// * all negative literals are installed
|
|
// * no positive literal is installed
|
|
// * i.e. the rule is not fulfilled and we
|
|
// * just need to decide on the positive literals
|
|
// */
|
|
// if (r->p < 0)
|
|
// {
|
|
// if (solv->decisionmap[-r->p] <= 0)
|
|
// continue;
|
|
// }
|
|
// else
|
|
// {
|
|
// if (solv->decisionmap[r->p] > 0)
|
|
// continue;
|
|
// if (solv->decisionmap[r->p] == 0)
|
|
// queue_push(&dq, r->p);
|
|
// }
|
|
// dp = pool->whatprovidesdata + r->d;
|
|
// while ((p = *dp++) != 0)
|
|
// {
|
|
// if (p < 0)
|
|
// {
|
|
// if (solv->decisionmap[-p] <= 0)
|
|
// break;
|
|
// }
|
|
// else
|
|
// {
|
|
// if (solv->decisionmap[p] > 0)
|
|
// break;
|
|
// if (solv->decisionmap[p] == 0)
|
|
// queue_push(&dq, p);
|
|
// }
|
|
// }
|
|
// if (p)
|
|
// continue;
|
|
// }
|
|
// IF_POOLDEBUG (SAT_DEBUG_PROPAGATE)
|
|
// {
|
|
// POOL_DEBUG(SAT_DEBUG_PROPAGATE, "unfulfilled ");
|
|
// solver_printruleclass(solv, SAT_DEBUG_PROPAGATE, r);
|
|
// }
|
|
// /* dq.count < 2 cannot happen as this means that
|
|
// * the rule is unit */
|
|
// assert(dq.count > 1);
|
|
//
|
|
// olevel = level;
|
|
// level = selectandinstall(solv, level, &dq, disablerules, r - solv->rules);
|
|
// if (level == 0)
|
|
// {
|
|
// queue_free(&dq);
|
|
// queue_free(&dqs);
|
|
// return;
|
|
// }
|
|
// if (level < systemlevel || level == 1)
|
|
// break; /* trouble */
|
|
// /* something changed, so look at all rules again */
|
|
// n = 0;
|
|
// }
|
|
//
|
|
// if (n != solv->nrules) /* ran into trouble, restart */
|
|
// continue;
|
|
//
|
|
// /* at this point we have a consistent system. now do the extras... */
|
|
//
|
|
// if (doweak)
|
|
// {
|
|
// int qcount;
|
|
//
|
|
// POOL_DEBUG(SAT_DEBUG_POLICY, "installing recommended packages\n");
|
|
// queue_empty(&dq); /* recommended packages */
|
|
// queue_empty(&dqs); /* supplemented packages */
|
|
// for (i = 1; i < pool->nsolvables; i++)
|
|
// {
|
|
// if (solv->decisionmap[i] < 0)
|
|
// continue;
|
|
// if (solv->decisionmap[i] > 0)
|
|
// {
|
|
// /* installed, check for recommends */
|
|
// Id *recp, rec, pp, p;
|
|
// s = pool->solvables + i;
|
|
// if (solv->ignorealreadyrecommended && s->repo == solv->installed)
|
|
// continue;
|
|
// /* XXX need to special case AND ? */
|
|
// if (s->recommends)
|
|
// {
|
|
// recp = s->repo->idarraydata + s->recommends;
|
|
// while ((rec = *recp++) != 0)
|
|
// {
|
|
// qcount = dq.count;
|
|
// FOR_PROVIDES(p, pp, rec)
|
|
// {
|
|
// if (solv->decisionmap[p] > 0)
|
|
// {
|
|
// dq.count = qcount;
|
|
// break;
|
|
// }
|
|
// else if (solv->decisionmap[p] == 0)
|
|
// {
|
|
// queue_pushunique(&dq, p);
|
|
// }
|
|
// }
|
|
// }
|
|
// }
|
|
// }
|
|
// else
|
|
// {
|
|
// s = pool->solvables + i;
|
|
// if (!s->supplements)
|
|
// continue;
|
|
// if (!pool_installable(pool, s))
|
|
// continue;
|
|
// if (!solver_is_supplementing(solv, s))
|
|
// continue;
|
|
// queue_push(&dqs, i);
|
|
// }
|
|
// }
|
|
//
|
|
// /* filter out all packages obsoleted by installed packages */
|
|
// /* this is no longer needed if we have reverse obsoletes */
|
|
// if ((dqs.count || dq.count) && solv->installed)
|
|
// {
|
|
// Map obsmap;
|
|
// Id obs, *obsp, po, ppo;
|
|
//
|
|
// map_init(&obsmap, pool->nsolvables);
|
|
// for (p = solv->installed->start; p < solv->installed->end; p++)
|
|
// {
|
|
// s = pool->solvables + p;
|
|
// if (s->repo != solv->installed || !s->obsoletes)
|
|
// continue;
|
|
// if (solv->decisionmap[p] <= 0)
|
|
// continue;
|
|
// if (solv->noobsoletes.size && MAPTST(&solv->noobsoletes, p))
|
|
// continue;
|
|
// obsp = s->repo->idarraydata + s->obsoletes;
|
|
// /* foreach obsoletes */
|
|
// while ((obs = *obsp++) != 0)
|
|
// FOR_PROVIDES(po, ppo, obs)
|
|
// MAPSET(&obsmap, po);
|
|
// }
|
|
// for (i = j = 0; i < dqs.count; i++)
|
|
// if (!MAPTST(&obsmap, dqs.elements[i]))
|
|
// dqs.elements[j++] = dqs.elements[i];
|
|
// dqs.count = j;
|
|
// for (i = j = 0; i < dq.count; i++)
|
|
// if (!MAPTST(&obsmap, dq.elements[i]))
|
|
// dq.elements[j++] = dq.elements[i];
|
|
// dq.count = j;
|
|
// map_free(&obsmap);
|
|
// }
|
|
//
|
|
// /* filter out all already supplemented packages if requested */
|
|
// if (solv->ignorealreadyrecommended && dqs.count)
|
|
// {
|
|
// /* turn off all new packages */
|
|
// for (i = 0; i < solv->decisionq.count; i++)
|
|
// {
|
|
// p = solv->decisionq.elements[i];
|
|
// if (p < 0)
|
|
// continue;
|
|
// s = pool->solvables + p;
|
|
// if (s->repo && s->repo != solv->installed)
|
|
// solv->decisionmap[p] = -solv->decisionmap[p];
|
|
// }
|
|
// /* filter out old supplements */
|
|
// for (i = j = 0; i < dqs.count; i++)
|
|
// {
|
|
// p = dqs.elements[i];
|
|
// s = pool->solvables + p;
|
|
// if (!s->supplements)
|
|
// continue;
|
|
// if (!solver_is_supplementing(solv, s))
|
|
// dqs.elements[j++] = p;
|
|
// }
|
|
// dqs.count = j;
|
|
// /* undo turning off */
|
|
// for (i = 0; i < solv->decisionq.count; i++)
|
|
// {
|
|
// p = solv->decisionq.elements[i];
|
|
// if (p < 0)
|
|
// continue;
|
|
// s = pool->solvables + p;
|
|
// if (s->repo && s->repo != solv->installed)
|
|
// solv->decisionmap[p] = -solv->decisionmap[p];
|
|
// }
|
|
// }
|
|
//
|
|
// /* multiversion doesn't mix well with supplements.
|
|
// * filter supplemented packages where we already decided
|
|
// * to install a different version (see bnc#501088) */
|
|
// if (dqs.count && solv->noobsoletes.size)
|
|
// {
|
|
// for (i = j = 0; i < dqs.count; i++)
|
|
// {
|
|
// p = dqs.elements[i];
|
|
// if (MAPTST(&solv->noobsoletes, p))
|
|
// {
|
|
// Id p2, pp2;
|
|
// s = pool->solvables + p;
|
|
// FOR_PROVIDES(p2, pp2, s->name)
|
|
// if (solv->decisionmap[p2] > 0 && pool->solvables[p2].name == s->name)
|
|
// break;
|
|
// if (p2)
|
|
// continue; /* ignore this package */
|
|
// }
|
|
// dqs.elements[j++] = p;
|
|
// }
|
|
// dqs.count = j;
|
|
// }
|
|
//
|
|
// /* make dq contain both recommended and supplemented pkgs */
|
|
// if (dqs.count)
|
|
// {
|
|
// for (i = 0; i < dqs.count; i++)
|
|
// queue_pushunique(&dq, dqs.elements[i]);
|
|
// }
|
|
//
|
|
// if (dq.count)
|
|
// {
|
|
// Map dqmap;
|
|
// int decisioncount = solv->decisionq.count;
|
|
//
|
|
// if (dq.count == 1)
|
|
// {
|
|
// /* simple case, just one package. no need to choose */
|
|
// p = dq.elements[0];
|
|
// if (dqs.count)
|
|
// POOL_DEBUG(SAT_DEBUG_POLICY, "installing supplemented %s\n", solvid2str(pool, p));
|
|
// else
|
|
// POOL_DEBUG(SAT_DEBUG_POLICY, "installing recommended %s\n", solvid2str(pool, p));
|
|
// queue_push(&solv->recommendations, p);
|
|
// level = setpropagatelearn(solv, level, p, 0, 0);
|
|
// continue; /* back to main loop */
|
|
// }
|
|
//
|
|
// /* filter packages, this gives us the best versions */
|
|
// policy_filter_unwanted(solv, &dq, POLICY_MODE_RECOMMEND);
|
|
//
|
|
// /* create map of result */
|
|
// map_init(&dqmap, pool->nsolvables);
|
|
// for (i = 0; i < dq.count; i++)
|
|
// MAPSET(&dqmap, dq.elements[i]);
|
|
//
|
|
// /* install all supplemented packages */
|
|
// for (i = 0; i < dqs.count; i++)
|
|
// {
|
|
// p = dqs.elements[i];
|
|
// if (solv->decisionmap[p] || !MAPTST(&dqmap, p))
|
|
// continue;
|
|
// POOL_DEBUG(SAT_DEBUG_POLICY, "installing supplemented %s\n", solvid2str(pool, p));
|
|
// queue_push(&solv->recommendations, p);
|
|
// olevel = level;
|
|
// level = setpropagatelearn(solv, level, p, 0, 0);
|
|
// if (level <= olevel)
|
|
// break;
|
|
// }
|
|
// if (i < dqs.count || solv->decisionq.count < decisioncount)
|
|
// {
|
|
// map_free(&dqmap);
|
|
// continue;
|
|
// }
|
|
//
|
|
// /* install all recommended packages */
|
|
// /* more work as we want to created branches if multiple
|
|
// * choices are valid */
|
|
// for (i = 0; i < decisioncount; i++)
|
|
// {
|
|
// Id rec, *recp, pp;
|
|
// p = solv->decisionq.elements[i];
|
|
// if (p < 0)
|
|
// continue;
|
|
// s = pool->solvables + p;
|
|
// if (!s->repo || (solv->ignorealreadyrecommended && s->repo == solv->installed))
|
|
// continue;
|
|
// if (!s->recommends)
|
|
// continue;
|
|
// recp = s->repo->idarraydata + s->recommends;
|
|
// while ((rec = *recp++) != 0)
|
|
// {
|
|
// queue_empty(&dq);
|
|
// FOR_PROVIDES(p, pp, rec)
|
|
// {
|
|
// if (solv->decisionmap[p] > 0)
|
|
// {
|
|
// dq.count = 0;
|
|
// break;
|
|
// }
|
|
// else if (solv->decisionmap[p] == 0 && MAPTST(&dqmap, p))
|
|
// queue_pushunique(&dq, p);
|
|
// }
|
|
// if (!dq.count)
|
|
// continue;
|
|
// if (dq.count > 1)
|
|
// {
|
|
// /* multiple candidates, open a branch */
|
|
// for (i = 1; i < dq.count; i++)
|
|
// queue_push(&solv->branches, dq.elements[i]);
|
|
// queue_push(&solv->branches, -level);
|
|
// }
|
|
// p = dq.elements[0];
|
|
// POOL_DEBUG(SAT_DEBUG_POLICY, "installing recommended %s\n", solvid2str(pool, p));
|
|
// queue_push(&solv->recommendations, p);
|
|
// olevel = level;
|
|
// level = setpropagatelearn(solv, level, p, 0, 0);
|
|
// if (level <= olevel || solv->decisionq.count < decisioncount)
|
|
// break; /* we had to revert some decisions */
|
|
// }
|
|
// if (rec)
|
|
// break; /* had a problem above, quit loop */
|
|
// }
|
|
// map_free(&dqmap);
|
|
//
|
|
// continue; /* back to main loop so that all deps are checked */
|
|
// }
|
|
// }
|
|
//
|
|
// if (solv->dupmap_all && solv->installed)
|
|
// {
|
|
// int installedone = 0;
|
|
//
|
|
// /* let's see if we can install some unsupported package */
|
|
// POOL_DEBUG(SAT_DEBUG_SOLVER, "deciding orphaned packages\n");
|
|
// for (i = 0; i < solv->orphaned.count; i++)
|
|
// {
|
|
// p = solv->orphaned.elements[i];
|
|
// if (solv->decisionmap[p])
|
|
// continue; /* already decided */
|
|
// olevel = level;
|
|
// if (solv->droporphanedmap_all)
|
|
// continue;
|
|
// if (solv->droporphanedmap.size && MAPTST(&solv->droporphanedmap, p - solv->installed->start))
|
|
// continue;
|
|
// POOL_DEBUG(SAT_DEBUG_SOLVER, "keeping orphaned %s\n", solvid2str(pool, p));
|
|
// level = setpropagatelearn(solv, level, p, 0, 0);
|
|
// installedone = 1;
|
|
// if (level < olevel)
|
|
// break;
|
|
// }
|
|
// if (installedone || i < solv->orphaned.count)
|
|
// continue; /* back to main loop */
|
|
// for (i = 0; i < solv->orphaned.count; i++)
|
|
// {
|
|
// p = solv->orphaned.elements[i];
|
|
// if (solv->decisionmap[p])
|
|
// continue; /* already decided */
|
|
// POOL_DEBUG(SAT_DEBUG_SOLVER, "removing orphaned %s\n", solvid2str(pool, p));
|
|
// olevel = level;
|
|
// level = setpropagatelearn(solv, level, -p, 0, 0);
|
|
// if (level < olevel)
|
|
// break;
|
|
// }
|
|
// if (i < solv->orphaned.count)
|
|
// continue; /* back to main loop */
|
|
// }
|
|
//
|
|
// if (solv->solution_callback)
|
|
// {
|
|
// solv->solution_callback(solv, solv->solution_callback_data);
|
|
// if (solv->branches.count)
|
|
// {
|
|
// int i = solv->branches.count - 1;
|
|
// int l = -solv->branches.elements[i];
|
|
// Id why;
|
|
//
|
|
// for (; i > 0; i--)
|
|
// if (solv->branches.elements[i - 1] < 0)
|
|
// break;
|
|
// p = solv->branches.elements[i];
|
|
// POOL_DEBUG(SAT_DEBUG_SOLVER, "branching with %s\n", solvid2str(pool, p));
|
|
// queue_empty(&dq);
|
|
// for (j = i + 1; j < solv->branches.count; j++)
|
|
// queue_push(&dq, solv->branches.elements[j]);
|
|
// solv->branches.count = i;
|
|
// level = l;
|
|
// revert(solv, level);
|
|
// if (dq.count > 1)
|
|
// for (j = 0; j < dq.count; j++)
|
|
// queue_push(&solv->branches, dq.elements[j]);
|
|
// olevel = level;
|
|
// why = -solv->decisionq_why.elements[solv->decisionq_why.count];
|
|
// assert(why >= 0);
|
|
// level = setpropagatelearn(solv, level, p, disablerules, why);
|
|
// if (level == 0)
|
|
// {
|
|
// queue_free(&dq);
|
|
// queue_free(&dqs);
|
|
// return;
|
|
// }
|
|
// continue;
|
|
// }
|
|
// /* all branches done, we're finally finished */
|
|
// break;
|
|
// }
|
|
//
|
|
// /* minimization step */
|
|
// if (solv->branches.count)
|
|
// {
|
|
// int l = 0, lasti = -1, lastl = -1;
|
|
// Id why;
|
|
//
|
|
// p = 0;
|
|
// for (i = solv->branches.count - 1; i >= 0; i--)
|
|
// {
|
|
// p = solv->branches.elements[i];
|
|
// if (p < 0)
|
|
// l = -p;
|
|
// else if (p > 0 && solv->decisionmap[p] > l + 1)
|
|
// {
|
|
// lasti = i;
|
|
// lastl = l;
|
|
// }
|
|
// }
|
|
// if (lasti >= 0)
|
|
// {
|
|
// /* kill old solvable so that we do not loop */
|
|
// p = solv->branches.elements[lasti];
|
|
// solv->branches.elements[lasti] = 0;
|
|
// POOL_DEBUG(SAT_DEBUG_SOLVER, "minimizing %d -> %d with %s\n", solv->decisionmap[p], lastl, solvid2str(pool, p));
|
|
// minimizationsteps++;
|
|
//
|
|
// level = lastl;
|
|
// revert(solv, level);
|
|
// why = -solv->decisionq_why.elements[solv->decisionq_why.count];
|
|
// assert(why >= 0);
|
|
// olevel = level;
|
|
// level = setpropagatelearn(solv, level, p, disablerules, why);
|
|
// if (level == 0)
|
|
// {
|
|
// queue_free(&dq);
|
|
// queue_free(&dqs);
|
|
// return;
|
|
// }
|
|
// continue; /* back to main loop */
|
|
// }
|
|
// }
|
|
// /* no minimization found, we're finally finished! */
|
|
// break;
|
|
// }
|
|
//
|
|
// POOL_DEBUG(SAT_DEBUG_STATS, "solver statistics: %d learned rules, %d unsolvable, %d minimization steps\n", solv->stats_learned, solv->stats_unsolvable, minimizationsteps);
|
|
//
|
|
// POOL_DEBUG(SAT_DEBUG_STATS, "done solving.\n\n");
|
|
// queue_free(&dq);
|
|
// queue_free(&dqs);
|
|
// #if 0
|
|
// solver_printdecisionq(solv, SAT_DEBUG_RESULT);
|
|
// #endif
|
|
// }
|
|
}
|