Install psalm as dev, sync scripts updates

vendor/fidry/cpu-core-counter/src/CpuCoreCounter.php

@@ -0,0 +1,89 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter;
+
+use Fidry\CpuCoreCounter\Finder\CpuCoreFinder;
+use Fidry\CpuCoreCounter\Finder\FinderRegistry;
+
+final class CpuCoreCounter
+{
+    /**
+     * @var list<CpuCoreFinder>
+     */
+    private $finders;
+
+    /**
+     * @var positive-int|null
+     */
+    private $count;
+
+    /**
+     * @param list<CpuCoreFinder>|null $finders
+     */
+    public function __construct(?array $finders = null)
+    {
+        $this->finders = $finders ?? FinderRegistry::getDefaultLogicalFinders();
+    }
+
+    /**
+     * @throws NumberOfCpuCoreNotFound
+     *
+     * @return positive-int
+     */
+    public function getCount(): int
+    {
+        // Memoize result
+        if (null === $this->count) {
+            $this->count = $this->findCount();
+        }
+
+        return $this->count;
+    }
+
+    /**
+     * @throws NumberOfCpuCoreNotFound
+     *
+     * @return positive-int
+     */
+    private function findCount(): int
+    {
+        foreach ($this->finders as $finder) {
+            $cores = $finder->find();
+
+            if (null !== $cores) {
+                return $cores;
+            }
+        }
+
+        throw NumberOfCpuCoreNotFound::create();
+    }
+
+    /**
+     * @throws NumberOfCpuCoreNotFound
+     *
+     * @return array{CpuCoreFinder, positive-int}
+     */
+    public function getFinderAndCores(): array
+    {
+        foreach ($this->finders as $finder) {
+            $cores = $finder->find();
+
+            if (null !== $cores) {
+                return [$finder, $cores];
+            }
+        }
+
+        throw NumberOfCpuCoreNotFound::create();
+    }
+}

vendor/fidry/cpu-core-counter/src/Diagnoser.php

@@ -0,0 +1,101 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter;
+
+use Fidry\CpuCoreCounter\Finder\CpuCoreFinder;
+use function array_map;
+use function explode;
+use function implode;
+use function max;
+use function str_repeat;
+use const PHP_EOL;
+
+/**
+ * Utility to debug.
+ *
+ * @private
+ */
+final class Diagnoser
+{
+    /**
+     * Provides an aggregated diagnosis based on each finders diagnosis.
+     *
+     * @param list<CpuCoreFinder> $finders
+     */
+    public static function diagnose(array $finders): string
+    {
+        $diagnoses = array_map(
+            static function (CpuCoreFinder $finder): string {
+                return self::diagnoseFinder($finder);
+            },
+            $finders
+        );
+
+        return implode(PHP_EOL, $diagnoses);
+    }
+
+    /**
+     * Executes each finders.
+     *
+     * @param list<CpuCoreFinder> $finders
+     */
+    public static function execute(array $finders): string
+    {
+        $diagnoses = array_map(
+            static function (CpuCoreFinder $finder): string {
+                $coresCount = $finder->find();
+
+                return implode(
+                    '',
+                    [
+                        $finder->toString(),
+                        ': ',
+                        null === $coresCount ? 'NULL' : $coresCount,
+                    ]
+                );
+            },
+            $finders
+        );
+
+        return implode(PHP_EOL, $diagnoses);
+    }
+
+    private static function diagnoseFinder(CpuCoreFinder $finder): string
+    {
+        $diagnosis = $finder->diagnose();
+
+        $maxLineLength = max(
+            array_map(
+                'strlen',
+                explode(PHP_EOL, $diagnosis)
+            )
+        );
+
+        $separator = str_repeat('-', $maxLineLength);
+
+        return implode(
+            '',
+            [
+                $finder->toString().':'.PHP_EOL,
+                $separator.PHP_EOL,
+                $diagnosis.PHP_EOL,
+                $separator.PHP_EOL,
+            ]
+        );
+    }
+
+    private function __construct()
+    {
+    }
+}

vendor/fidry/cpu-core-counter/src/Executor/ProcOpenExecutor.php

@@ -0,0 +1,56 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Executor;
+
+use function fclose;
+use function function_exists;
+use function is_resource;
+use function proc_close;
+use function proc_open;
+use function stream_get_contents;
+
+final class ProcOpenExecutor implements ProcessExecutor
+{
+    public function execute(string $command): ?array
+    {
+        if (!function_exists('proc_open')) {
+            return null;
+        }
+
+        $pipes = [];
+
+        $process = @proc_open(
+            $command,
+            [
+                ['pipe', 'rb'],
+                ['pipe', 'wb'], // stdout
+                ['pipe', 'wb'], // stderr
+            ],
+            $pipes
+        );
+
+        if (!is_resource($process)) {
+            return null;
+        }
+
+        fclose($pipes[0]);
+
+        $stdout = (string) stream_get_contents($pipes[1]);
+        $stderr = (string) stream_get_contents($pipes[2]);
+
+        proc_close($process);
+
+        return [$stdout, $stderr];
+    }
+}

vendor/fidry/cpu-core-counter/src/Executor/ProcessExecutor.php

@@ -0,0 +1,22 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Executor;
+
+interface ProcessExecutor
+{
+    /**
+     * @return array{string, string}|null STDOUT & STDERR tuple
+     */
+    public function execute(string $command): ?array;
+}

vendor/fidry/cpu-core-counter/src/Finder/CpuCoreFinder.php

@@ -0,0 +1,37 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+interface CpuCoreFinder
+{
+    /**
+     * Provides an explanation which may offer some insight as to what the finder
+     * will be able to find.
+     *
+     * This is practical to have an idea of what each finder will find collect
+     * information for the unit tests, since integration tests are quite complicated
+     * as dependent on complex infrastructures.
+     */
+    public function diagnose(): string;
+
+    /**
+     * Find the number of CPU cores. If it could not find it, returns null. The
+     * means used to find the cores are at the implementation discretion.
+     *
+     * @return positive-int|null
+     */
+    public function find(): ?int;
+
+    public function toString(): string;
+}

vendor/fidry/cpu-core-counter/src/Finder/CpuInfoFinder.php

@@ -0,0 +1,98 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+use function file_get_contents;
+use function is_file;
+use function sprintf;
+use function substr_count;
+use const PHP_EOL;
+
+/**
+ * Find the number of CPU cores looking up at the cpuinfo file which is available
+ * on Linux systems and Windows systems with a Linux sub-system.
+ *
+ * @see https://github.com/paratestphp/paratest/blob/c163539818fd96308ca8dc60f46088461e366ed4/src/Runners/PHPUnit/Options.php#L903-L909
+ * @see https://unix.stackexchange.com/questions/146051/number-of-processors-in-proc-cpuinfo
+ */
+final class CpuInfoFinder implements CpuCoreFinder
+{
+    private const CPU_INFO_PATH = '/proc/cpuinfo';
+
+    public function diagnose(): string
+    {
+        if (!is_file(self::CPU_INFO_PATH)) {
+            return sprintf(
+                'The file "%s" could not be found.',
+                self::CPU_INFO_PATH
+            );
+        }
+
+        $cpuInfo = file_get_contents(self::CPU_INFO_PATH);
+
+        if (false === $cpuInfo) {
+            return sprintf(
+                'Could not get the content of the file "%s".',
+                self::CPU_INFO_PATH
+            );
+        }
+
+        return sprintf(
+            'Found the file "%s" with the content:%s%s',
+            self::CPU_INFO_PATH,
+            PHP_EOL,
+            $cpuInfo
+        );
+    }
+
+    /**
+     * @return positive-int|null
+     */
+    public function find(): ?int
+    {
+        $cpuInfo = self::getCpuInfo();
+
+        return null === $cpuInfo ? null : self::countCpuCores($cpuInfo);
+    }
+
+    public function toString(): string
+    {
+        return 'CpuInfoFinder';
+    }
+
+    private static function getCpuInfo(): ?string
+    {
+        if (!@is_file(self::CPU_INFO_PATH)) {
+            return null;
+        }
+
+        $cpuInfo = @file_get_contents(self::CPU_INFO_PATH);
+
+        return false === $cpuInfo
+            ? null
+            : $cpuInfo;
+    }
+
+    /**
+     * @internal
+     *
+     * @return positive-int|null
+     */
+    public static function countCpuCores(string $cpuInfo): ?int
+    {
+        $processorCount = substr_count($cpuInfo, 'processor');
+
+        return $processorCount > 0 ? $processorCount : null;
+    }
+}

vendor/fidry/cpu-core-counter/src/Finder/DummyCpuCoreFinder.php

@@ -0,0 +1,57 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+use function sprintf;
+
+/**
+ * This finder returns whatever value you gave to it. This is useful for testing
+ * or as a fallback to avoid to catch the NumberOfCpuCoreNotFound exception.
+ */
+final class DummyCpuCoreFinder implements CpuCoreFinder
+{
+    /**
+     * @var positive-int
+     */
+    private $count;
+
+    public function diagnose(): string
+    {
+        return sprintf(
+            'Will return "%d".',
+            $this->count
+        );
+    }
+
+    /**
+     * @param positive-int $count
+     */
+    public function __construct(int $count)
+    {
+        $this->count = $count;
+    }
+
+    public function find(): ?int
+    {
+        return $this->count;
+    }
+
+    public function toString(): string
+    {
+        return sprintf(
+            'DummyCpuCoreFinder(value=%d)',
+            $this->count
+        );
+    }
+}

vendor/fidry/cpu-core-counter/src/Finder/FinderRegistry.php

@@ -0,0 +1,77 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+final class FinderRegistry
+{
+    /**
+     * @return list<CpuCoreFinder> List of all the known finders with all their variants.
+     */
+    public static function getAllVariants(): array
+    {
+        return [
+            new CpuInfoFinder(),
+            new DummyCpuCoreFinder(1),
+            new HwLogicalFinder(),
+            new HwPhysicalFinder(),
+            new LscpuLogicalFinder(),
+            new LscpuPhysicalFinder(),
+            new _NProcessorFinder(),
+            new NProcessorFinder(),
+            new NProcFinder(true),
+            new NProcFinder(false),
+            new NullCpuCoreFinder(),
+            SkipOnOSFamilyFinder::forWindows(
+                new DummyCpuCoreFinder(1)
+            ),
+            OnlyOnOSFamilyFinder::forWindows(
+                new DummyCpuCoreFinder(1)
+            ),
+            new WmicPhysicalFinder(),
+            new WmicLogicalFinder(),
+        ];
+    }
+
+    /**
+     * @return list<CpuCoreFinder>
+     */
+    public static function getDefaultLogicalFinders(): array
+    {
+        return [
+            OnlyOnOSFamilyFinder::forWindows(new WmicLogicalFinder()),
+            new NProcFinder(),
+            new HwLogicalFinder(),
+            new _NProcessorFinder(),
+            new NProcessorFinder(),
+            new LscpuLogicalFinder(),
+            new CpuInfoFinder(),
+        ];
+    }
+
+    /**
+     * @return list<CpuCoreFinder>
+     */
+    public static function getDefaultPhysicalFinders(): array
+    {
+        return [
+            OnlyOnOSFamilyFinder::forWindows(new WmicPhysicalFinder()),
+            new HwPhysicalFinder(),
+            new LscpuPhysicalFinder(),
+        ];
+    }
+
+    private function __construct()
+    {
+    }
+}

vendor/fidry/cpu-core-counter/src/Finder/HwLogicalFinder.php

@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+/**
+ * Find the number of logical CPU cores for Linux, BSD and OSX.
+ *
+ * @see https://github.com/paratestphp/paratest/blob/c163539818fd96308ca8dc60f46088461e366ed4/src/Runners/PHPUnit/Options.php#L903-L909
+ * @see https://opensource.apple.com/source/xnu/xnu-792.2.4/libkern/libkern/sysctl.h.auto.html
+ */
+final class HwLogicalFinder extends ProcOpenBasedFinder
+{
+    protected function getCommand(): string
+    {
+        return 'sysctl -n hw.logicalcpu';
+    }
+
+    public function toString(): string
+    {
+        return 'HwLogicalFinder';
+    }
+}

vendor/fidry/cpu-core-counter/src/Finder/HwPhysicalFinder.php

@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+/**
+ * Find the number of physical CPU cores for Linux, BSD and OSX.
+ *
+ * @see https://github.com/paratestphp/paratest/blob/c163539818fd96308ca8dc60f46088461e366ed4/src/Runners/PHPUnit/Options.php#L903-L909
+ * @see https://opensource.apple.com/source/xnu/xnu-792.2.4/libkern/libkern/sysctl.h.auto.html
+ */
+final class HwPhysicalFinder extends ProcOpenBasedFinder
+{
+    protected function getCommand(): string
+    {
+        return 'sysctl -n hw.physicalcpu';
+    }
+
+    public function toString(): string
+    {
+        return 'HwPhysicalFinder';
+    }
+}

vendor/fidry/cpu-core-counter/src/Finder/LscpuLogicalFinder.php

@@ -0,0 +1,52 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+use function count;
+use function explode;
+use function is_array;
+use function preg_grep;
+use const PHP_EOL;
+
+/**
+ * The number of logical cores.
+ *
+ * @see https://stackoverflow.com/a/23378780/5846754
+ */
+final class LscpuLogicalFinder extends ProcOpenBasedFinder
+{
+    public function getCommand(): string
+    {
+        return 'lscpu -p';
+    }
+
+    protected function countCpuCores(string $process): ?int
+    {
+        $lines = explode(PHP_EOL, $process);
+        $actualLines = preg_grep('/^\d+,/', $lines);
+
+        if (!is_array($actualLines)) {
+            return null;
+        }
+
+        $count = count($actualLines);
+
+        return 0 === $count ? null : $count;
+    }
+
+    public function toString(): string
+    {
+        return 'LscpuLogicalFinder';
+    }
+}

vendor/fidry/cpu-core-counter/src/Finder/LscpuPhysicalFinder.php

@@ -0,0 +1,66 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+use function count;
+use function explode;
+use function is_array;
+use function preg_grep;
+use function strtok;
+use const PHP_EOL;
+
+/**
+ * The number of physical processors.
+ *
+ * @see https://stackoverflow.com/a/23378780/5846754
+ */
+final class LscpuPhysicalFinder extends ProcOpenBasedFinder
+{
+    public function toString(): string
+    {
+        return 'LscpuPhysicalFinder';
+    }
+
+    public function getCommand(): string
+    {
+        return 'lscpu -p';
+    }
+
+    protected function countCpuCores(string $process): ?int
+    {
+        $lines = explode(PHP_EOL, $process);
+        $actualLines = preg_grep('/^\d+/', $lines);
+
+        if (!is_array($actualLines)) {
+            return null;
+        }
+
+        $cores = [];
+        foreach ($actualLines as $line) {
+            strtok($line, ',');
+            $core = strtok(',');
+
+            if (false === $core) {
+                continue;
+            }
+
+            $cores[$core] = true;
+        }
+        unset($cores['-']);
+
+        $count = count($cores);
+
+        return 0 === $count ? null : $count;
+    }
+}

vendor/fidry/cpu-core-counter/src/Finder/NProcFinder.php

@@ -0,0 +1,56 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+use Fidry\CpuCoreCounter\Executor\ProcessExecutor;
+use function sprintf;
+
+/**
+ * The number of (logical) cores.
+ *
+ * @see https://github.com/infection/infection/blob/fbd8c44/src/Resource/Processor/CpuCoresCountProvider.php#L69-L82
+ * @see https://unix.stackexchange.com/questions/146051/number-of-processors-in-proc-cpuinfo
+ */
+final class NProcFinder extends ProcOpenBasedFinder
+{
+    /**
+     * @var bool
+     */
+    private $all;
+
+    /**
+     * @param bool $all If disabled will give the number of cores available for the current process only.
+     */
+    public function __construct(
+        bool $all = true,
+        ?ProcessExecutor $executor = null
+    ) {
+        parent::__construct($executor);
+
+        $this->all = $all;
+    }
+
+    public function toString(): string
+    {
+        return sprintf(
+            'NProcFinder(all=%s)',
+            $this->all ? 'true' : 'false'
+        );
+    }
+
+    protected function getCommand(): string
+    {
+        return 'nproc'.($this->all ? ' --all' : '');
+    }
+}

vendor/fidry/cpu-core-counter/src/Finder/NProcessorFinder.php

@@ -0,0 +1,32 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+/**
+ * Find the number of logical CPU cores for FreeSBD, Solaris and the likes.
+ *
+ * @see https://twitter.com/freebsdfrau/status/1052016199452700678?s=20&t=M2pHkRqmmna-UF68lfL2hw
+ */
+final class NProcessorFinder extends ProcOpenBasedFinder
+{
+    protected function getCommand(): string
+    {
+        return 'getconf NPROCESSORS_ONLN';
+    }
+
+    public function toString(): string
+    {
+        return 'NProcessorFinder';
+    }
+}

vendor/fidry/cpu-core-counter/src/Finder/NullCpuCoreFinder.php

@@ -0,0 +1,35 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+/**
+ * This finder returns whatever value you gave to it. This is useful for testing.
+ */
+final class NullCpuCoreFinder implements CpuCoreFinder
+{
+    public function diagnose(): string
+    {
+        return 'Will return "null".';
+    }
+
+    public function find(): ?int
+    {
+        return null;
+    }
+
+    public function toString(): string
+    {
+        return 'NullCpuCoreFinder';
+    }
+}

vendor/fidry/cpu-core-counter/src/Finder/OnlyOnOSFamilyFinder.php

@@ -0,0 +1,113 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+use function implode;
+use function sprintf;
+use const PHP_OS_FAMILY;
+
+final class OnlyOnOSFamilyFinder implements CpuCoreFinder
+{
+    /**
+     * @var list<string>
+     */
+    private $skippedOSFamilies;
+
+    /**
+     * @var CpuCoreFinder
+     */
+    private $decoratedFinder;
+
+    /**
+     * @param string|list<string> $skippedOSFamilyOrFamilies
+     */
+    public function __construct(
+        $skippedOSFamilyOrFamilies,
+        CpuCoreFinder $decoratedFinder
+    ) {
+        $this->skippedOSFamilies = (array) $skippedOSFamilyOrFamilies;
+        $this->decoratedFinder = $decoratedFinder;
+    }
+
+    public static function forWindows(CpuCoreFinder $decoratedFinder): self
+    {
+        return new self(
+            'Windows',
+            $decoratedFinder
+        );
+    }
+
+    public static function forBSD(CpuCoreFinder $decoratedFinder): self
+    {
+        return new self(
+            'BSD',
+            $decoratedFinder
+        );
+    }
+
+    public static function forDarwin(CpuCoreFinder $decoratedFinder): self
+    {
+        return new self(
+            'Darwin',
+            $decoratedFinder
+        );
+    }
+
+    public static function forSolaris(CpuCoreFinder $decoratedFinder): self
+    {
+        return new self(
+            'Solaris',
+            $decoratedFinder
+        );
+    }
+
+    public static function forLinux(CpuCoreFinder $decoratedFinder): self
+    {
+        return new self(
+            'Linux',
+            $decoratedFinder
+        );
+    }
+
+    public function diagnose(): string
+    {
+        return $this->skip()
+            ? sprintf(
+                'Skipped platform detected ("%s").',
+                PHP_OS_FAMILY
+            )
+            : $this->decoratedFinder->diagnose();
+    }
+
+    public function find(): ?int
+    {
+        return $this->skip()
+            ? null
+            : $this->decoratedFinder->find();
+    }
+
+    public function toString(): string
+    {
+        return sprintf(
+            'OnlyOnOSFamilyFinder(only=(%s),%s)',
+            implode(',', $this->skippedOSFamilies),
+            $this->decoratedFinder->toString()
+        );
+    }
+
+    private function skip(): bool
+    {
+        return !in_array(PHP_OS_FAMILY, $this->skippedOSFamilies, true);
+    }
+}

vendor/fidry/cpu-core-counter/src/Finder/ProcOpenBasedFinder.php

@@ -0,0 +1,104 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+use Fidry\CpuCoreCounter\Executor\ProcessExecutor;
+use Fidry\CpuCoreCounter\Executor\ProcOpenExecutor;
+use function filter_var;
+use function function_exists;
+use function is_int;
+use function sprintf;
+use function trim;
+use const FILTER_VALIDATE_INT;
+use const PHP_EOL;
+
+abstract class ProcOpenBasedFinder implements CpuCoreFinder
+{
+    /**
+     * @var ProcessExecutor
+     */
+    private $executor;
+
+    public function __construct(?ProcessExecutor $executor = null)
+    {
+        $this->executor = $executor ?? new ProcOpenExecutor();
+    }
+
+    public function diagnose(): string
+    {
+        if (!function_exists('proc_open')) {
+            return 'The function "proc_open" is not available.';
+        }
+
+        $command = $this->getCommand();
+        $output = $this->executor->execute($command);
+
+        if (null === $output) {
+            return sprintf(
+                'Failed to execute the command "%s".',
+                $command
+            );
+        }
+
+        [$stdout, $stderr] = $output;
+        $failed = '' !== trim($stderr);
+
+        return $failed
+            ? sprintf(
+                'Executed the command "%s" which wrote the following output to the STDERR:%s%s',
+                $command,
+                PHP_EOL,
+                $stderr
+            )
+            : sprintf(
+                'Executed the command "%s" and got the following (STDOUT) output:%s%s',
+                $command,
+                PHP_EOL,
+                $stdout
+            );
+    }
+
+    /**
+     * @return positive-int|null
+     */
+    public function find(): ?int
+    {
+        $output = $this->executor->execute($this->getCommand());
+
+        if (null === $output) {
+            return null;
+        }
+
+        [$stdout, $stderr] = $output;
+        $failed = '' !== trim($stderr);
+
+        return $failed
+            ? null
+            : $this->countCpuCores($stdout);
+    }
+
+    /**
+     * @internal
+     *
+     * @return positive-int|null
+     */
+    protected function countCpuCores(string $process): ?int
+    {
+        $cpuCount = filter_var($process, FILTER_VALIDATE_INT);
+
+        return is_int($cpuCount) && $cpuCount > 0 ? $cpuCount : null;
+    }
+
+    abstract protected function getCommand(): string;
+}

vendor/fidry/cpu-core-counter/src/Finder/SkipOnOSFamilyFinder.php

@@ -0,0 +1,113 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+use function implode;
+use function in_array;
+use function sprintf;
+
+final class SkipOnOSFamilyFinder implements CpuCoreFinder
+{
+    /**
+     * @var list<string>
+     */
+    private $skippedOSFamilies;
+
+    /**
+     * @var CpuCoreFinder
+     */
+    private $decoratedFinder;
+
+    /**
+     * @param string|list<string> $skippedOSFamilyOrFamilies
+     */
+    public function __construct(
+        $skippedOSFamilyOrFamilies,
+        CpuCoreFinder $decoratedFinder
+    ) {
+        $this->skippedOSFamilies = (array) $skippedOSFamilyOrFamilies;
+        $this->decoratedFinder = $decoratedFinder;
+    }
+
+    public static function forWindows(CpuCoreFinder $decoratedFinder): self
+    {
+        return new self(
+            'Windows',
+            $decoratedFinder
+        );
+    }
+
+    public static function forBSD(CpuCoreFinder $decoratedFinder): self
+    {
+        return new self(
+            'BSD',
+            $decoratedFinder
+        );
+    }
+
+    public static function forDarwin(CpuCoreFinder $decoratedFinder): self
+    {
+        return new self(
+            'Darwin',
+            $decoratedFinder
+        );
+    }
+
+    public static function forSolaris(CpuCoreFinder $decoratedFinder): self
+    {
+        return new self(
+            'Solaris',
+            $decoratedFinder
+        );
+    }
+
+    public static function forLinux(CpuCoreFinder $decoratedFinder): self
+    {
+        return new self(
+            'Linux',
+            $decoratedFinder
+        );
+    }
+
+    public function diagnose(): string
+    {
+        return $this->skip()
+            ? sprintf(
+                'Skipped platform detected ("%s").',
+                PHP_OS_FAMILY
+            )
+            : $this->decoratedFinder->diagnose();
+    }
+
+    public function find(): ?int
+    {
+        return $this->skip()
+            ? null
+            : $this->decoratedFinder->find();
+    }
+
+    public function toString(): string
+    {
+        return sprintf(
+            'SkipOnOSFamilyFinder(skip=(%s),%s)',
+            implode(',', $this->skippedOSFamilies),
+            $this->decoratedFinder->toString()
+        );
+    }
+
+    private function skip(): bool
+    {
+        return in_array(PHP_OS_FAMILY, $this->skippedOSFamilies, true);
+    }
+}

vendor/fidry/cpu-core-counter/src/Finder/WmicLogicalFinder.php

@@ -0,0 +1,47 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+use function preg_match;
+
+/**
+ * Find the number of logical CPU cores for Windows.
+ *
+ * @see https://github.com/paratestphp/paratest/blob/c163539818fd96308ca8dc60f46088461e366ed4/src/Runners/PHPUnit/Options.php#L912-L916
+ */
+final class WmicLogicalFinder extends ProcOpenBasedFinder
+{
+    private const CPU_CORE_COUNT_REGEX = '/NumberOfLogicalProcessors[\s\n]+(?<count>\d+)/';
+
+    protected function getCommand(): string
+    {
+        return 'wmic cpu get NumberOfLogicalProcessors';
+    }
+
+    public function toString(): string
+    {
+        return 'WmicLogicalFinder';
+    }
+
+    protected function countCpuCores(string $process): ?int
+    {
+        if (0 === preg_match(self::CPU_CORE_COUNT_REGEX, $process, $matches)) {
+            return parent::countCpuCores($process);
+        }
+
+        $count = $matches['count'];
+
+        return parent::countCpuCores($count);
+    }
+}

vendor/fidry/cpu-core-counter/src/Finder/WmicPhysicalFinder.php

@@ -0,0 +1,47 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+use function preg_match;
+
+/**
+ * Find the number of physical CPU cores for Windows.
+ *
+ * @see https://github.com/paratestphp/paratest/blob/c163539818fd96308ca8dc60f46088461e366ed4/src/Runners/PHPUnit/Options.php#L912-L916
+ */
+final class WmicPhysicalFinder extends ProcOpenBasedFinder
+{
+    private const CPU_CORE_COUNT_REGEX = '/NumberOfCores[\s\n]+(?<count>\d+)/';
+
+    protected function getCommand(): string
+    {
+        return 'wmic cpu get NumberOfCores';
+    }
+
+    public function toString(): string
+    {
+        return 'WmicPhysicalFinder';
+    }
+
+    protected function countCpuCores(string $process): ?int
+    {
+        if (0 === preg_match(self::CPU_CORE_COUNT_REGEX, $process, $matches)) {
+            return parent::countCpuCores($process);
+        }
+
+        $count = $matches['count'];
+
+        return parent::countCpuCores($count);
+    }
+}

vendor/fidry/cpu-core-counter/src/Finder/_NProcessorFinder.php

@@ -0,0 +1,32 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter\Finder;
+
+/**
+ * Find the number of logical CPU cores for Linux and the likes.
+ *
+ * @see https://twitter.com/freebsdfrau/status/1052016199452700678?s=20&t=M2pHkRqmmna-UF68lfL2hw
+ */
+final class _NProcessorFinder extends ProcOpenBasedFinder
+{
+    protected function getCommand(): string
+    {
+        return 'getconf _NPROCESSORS_ONLN';
+    }
+
+    public function toString(): string
+    {
+        return '_NProcessorFinder';
+    }
+}

vendor/fidry/cpu-core-counter/src/NumberOfCpuCoreNotFound.php

@@ -0,0 +1,26 @@
+<?php
+
+/*
+ * This file is part of the Fidry CPUCounter Config package.
+ *
+ * (c) Théo FIDRY <theo.fidry@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Fidry\CpuCoreCounter;
+
+use RuntimeException;
+
+final class NumberOfCpuCoreNotFound extends RuntimeException
+{
+    public static function create(): self
+    {
+        return new self(
+            'Could not find the number of CPU cores available.'
+        );
+    }
+}