[parallel] bump default threads from 16 to 32 to keep up with modern technology, alligned with phpstan setup

Author: TomasVotruba

src/Config/RectorConfig.php

@@ -14,6 +14,7 @@
 use Rector\Contract\Rector\ConfigurableRectorInterface;
 use Rector\Contract\Rector\RectorInterface;
 use Rector\DependencyInjection\Laravel\ContainerMemento;
+use Rector\Enum\Config\Defaults;
 use Rector\Exception\ShouldNotHappenException;
 use Rector\Skipper\SkipCriteriaResolver\SkippedClassResolver;
 use Rector\Validation\RectorConfigValidator;
@@ -93,8 +94,11 @@ public function disableParallel(): void
         SimpleParameterProvider::setParameter(Option::PARALLEL, false);
     }
 
-    public function parallel(int $processTimeout = 120, int $maxNumberOfProcess = 16, int $jobSize = 16): void
-    {
+    public function parallel(
+        int $processTimeout = 120,
+        int $maxNumberOfProcess = Defaults::PARALLEL_MAX_NUMBER_OF_PROCESS,
+        int $jobSize = 16
+    ): void {
         SimpleParameterProvider::setParameter(Option::PARALLEL, true);
         SimpleParameterProvider::setParameter(Option::PARALLEL_JOB_TIMEOUT_IN_SECONDS, $processTimeout);
         SimpleParameterProvider::setParameter(Option::PARALLEL_MAX_NUMBER_OF_PROCESSES, $maxNumberOfProcess);

src/Configuration/RectorConfigBuilder.php

@@ -20,6 +20,7 @@
 use Rector\Contract\Rector\ConfigurableRectorInterface;
 use Rector\Contract\Rector\RectorInterface;
 use Rector\Doctrine\Set\DoctrineSetList;
+use Rector\Enum\Config\Defaults;
 use Rector\Exception\Configuration\InvalidConfigurationException;
 use Rector\Php\PhpVersionResolver\ComposerJsonPhpVersionResolver;
 use Rector\PHPUnit\Set\PHPUnitSetList;
@@ -90,7 +91,7 @@ final class RectorConfigBuilder
 
     private int $parallelTimeoutSeconds = 120;
 
-    private int $parallelMaxNumberOfProcess = 16;
+    private int $parallelMaxNumberOfProcess = Defaults::PARALLEL_MAX_NUMBER_OF_PROCESS;
 
     private int $parallelJobSize = 16;
 

src/Enum/Config/Defaults.php

@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Enum\Config;
+
+final class Defaults
+{
+    /**
+     * @var int
+     */
+    public const PARALLEL_MAX_NUMBER_OF_PROCESS = 32;
+}