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[DependencyInjection] fix performances in circular refs detection #38882

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Merged
nicolas-grekas merged 1 commit into from
Nov 2, 2020
Merged

[DependencyInjection] fix performances in circular refs detection #38882

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126 changes: 71 additions & 55 deletions src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
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Original file line number Diff line number Diff line change
Expand Up @@ -180,25 +180,7 @@ public function dump(array $options = [])
}
}

(new AnalyzeServiceReferencesPass(false, !$this->getProxyDumper() instanceof NullDumper))->process($this->container);
$checkedNodes = [];
$this->circularReferences = [];
$this->singleUsePrivateIds = [];
foreach ($this->container->getCompiler()->getServiceReferenceGraph()->getNodes() as $id => $node) {
if (!$node->getValue() instanceof Definition) {
continue;
}
if (!isset($checkedNodes[$id])) {
$this->analyzeCircularReferences($id, $node->getOutEdges(), $checkedNodes);
}
if ($this->isSingleUsePrivateNode($node)) {
$this->singleUsePrivateIds[$id] = $id;
}
}
$this->container->getCompiler()->getServiceReferenceGraph()->clear();
$checkedNodes = [];
$this->singleUsePrivateIds = array_diff_key($this->singleUsePrivateIds, $this->circularReferences);

$this->analyzeReferences();
$this->docStar = $options['debug'] ? '*' : '';

if (!empty($options['file']) && is_dir($dir = \dirname($options['file']))) {
Expand Down Expand Up @@ -409,58 +391,92 @@ private function getProxyDumper(): ProxyDumper
return $this->proxyDumper;
}

private function analyzeCircularReferences(string $sourceId, array $edges, array &$checkedNodes, array &$currentPath = [], bool $byConstructor = true)
private function analyzeReferences()
{
$checkedNodes[$sourceId] = true;
$currentPath[$sourceId] = $byConstructor;
(new AnalyzeServiceReferencesPass(false, !$this->getProxyDumper() instanceof NullDumper))->process($this->container);
$checkedNodes = [];
$this->circularReferences = [];
$this->singleUsePrivateIds = [];
foreach ($this->container->getCompiler()->getServiceReferenceGraph()->getNodes() as $id => $node) {
if (!$node->getValue() instanceof Definition) {
continue;
}

foreach ($edges as $edge) {
$node = $edge->getDestNode();
$id = $node->getId();
if ($this->isSingleUsePrivateNode($node)) {
$this->singleUsePrivateIds[$id] = $id;
}

if (!$node->getValue() instanceof Definition || $sourceId === $id || $edge->isLazy() || $edge->isWeak()) {
// no-op
} elseif (isset($currentPath[$id])) {
$this->addCircularReferences($id, $currentPath, $edge->isReferencedByConstructor());
} elseif (!isset($checkedNodes[$id])) {
$this->analyzeCircularReferences($id, $node->getOutEdges(), $checkedNodes, $currentPath, $edge->isReferencedByConstructor());
} elseif (isset($this->circularReferences[$id])) {
$this->connectCircularReferences($id, $currentPath, $edge->isReferencedByConstructor());
$newNodes = [];
if (!$this->collectCircularReferences($id, $node->getOutEdges(), $checkedNodes, $newNodes)) {
foreach ($newNodes as $newNodeId => $_) {
$checkedNodes[$newNodeId] = [];
}
continue;
}
}
unset($currentPath[$sourceId]);
}

private function connectCircularReferences(string $sourceId, array &$currentPath, bool $byConstructor, array &$subPath = [])
{
$currentPath[$sourceId] = $subPath[$sourceId] = $byConstructor;
$nodesToFlatten = $newNodes;
do {
$changedNodes = [];
foreach ($nodesToFlatten as $newNodeId => $_) {
$deps = &$checkedNodes[$newNodeId];
foreach ($deps as $id => [$path, $depsByConstructor]) {
foreach ($checkedNodes[$id] as $depsId => [$subPath, $subDepsByConstructor]) {
if (!isset($deps[$depsId]) || ($depsByConstructor && $subDepsByConstructor && !$deps[$depsId][1])) {
array_unshift($subPath, $id);
$deps[$depsId] = [$subPath, $depsByConstructor && $subDepsByConstructor];
$changedNodes += $newNodes[$newNodeId] ?? [];
}
}
}
}
} while ($nodesToFlatten = $changedNodes);

foreach ($this->circularReferences[$sourceId] as $id => $byConstructor) {
if (isset($currentPath[$id])) {
$this->addCircularReferences($id, $currentPath, $byConstructor);
} elseif (!isset($subPath[$id]) && isset($this->circularReferences[$id])) {
$this->connectCircularReferences($id, $currentPath, $byConstructor, $subPath);
foreach ($newNodes as $newNodeId => $_) {
if (null !== $n = $checkedNodes[$newNodeId][$newNodeId] ?? null) {
$this->addCircularReferences($newNodeId, $n[0], $n[1]);
}
}
}
unset($currentPath[$sourceId], $subPath[$sourceId]);

$this->container->getCompiler()->getServiceReferenceGraph()->clear();
$this->singleUsePrivateIds = array_diff_key($this->singleUsePrivateIds, $this->circularReferences);
}

private function addCircularReferences(string $id, array $currentPath, bool $byConstructor)
private function collectCircularReferences(string $sourceId, array $edges, array &$checkedNodes, array &$newNodes, array $path = []): bool
{
$currentPath[$id] = $byConstructor;
$circularRefs = [];
$path[$sourceId] = true;
$checkedNodes[$sourceId] = [];
$newNodes[$sourceId] = [];
$circular = false;
foreach ($edges as $edge) {
$node = $edge->getDestNode();
$id = $node->getId();
if (!$node->getValue() instanceof Definition || $sourceId === $id || $edge->isLazy() || $edge->isWeak()) {
continue;
}

foreach (array_reverse($currentPath) as $parentId => $v) {
$byConstructor = $byConstructor && $v;
$circularRefs[] = $parentId;
if (isset($path[$id])) {
$circular = true;
} elseif (!isset($checkedNodes[$id])) {
$circular = $this->collectCircularReferences($id, $node->getOutEdges(), $checkedNodes, $newNodes, $path) || $circular;
}

if ($parentId === $id) {
break;
$checkedNodes[$sourceId][$id] = [[], $edge->isReferencedByConstructor()];
if (isset($newNodes[$id])) {
$newNodes[$id][$sourceId] = true;
}
}
unset($path[$sourceId]);

$currentId = $id;
foreach ($circularRefs as $parentId) {
return $circular;
}

private function addCircularReferences(string $sourceId, array $currentPath, bool $byConstructor)
{
$currentId = $sourceId;
$currentPath = array_reverse($currentPath);
$currentPath[] = $currentId;
foreach ($currentPath as $parentId) {
if (empty($this->circularReferences[$parentId][$currentId])) {
$this->circularReferences[$parentId][$currentId] = $byConstructor;
}
Expand Down