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<?php |
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/** |
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* This file is part of the sj-i/php-profiler package. |
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* |
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* (c) sji <[email protected]> |
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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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declare(strict_types=1); |
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namespace PhpProfiler\Lib\Process\MemoryMap; |
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/** |
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* Class ProcessModuleMemoryMap |
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* @package PhpProfiler\Lib\Process\MemoryMap |
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*/ |
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final class ProcessModuleMemoryMap implements ProcessModuleMemoryMapInterface |
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{ |
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/** @var ProcessMemoryArea[] */ |
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private array $memory_areas; |
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private ?int $base_address = null; |
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/** @var array<int,int>|null */ |
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private ?array $sorted_offset_to_memory_map = null; |
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/** |
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* ProcessModuleMemoryMap constructor. |
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* @param ProcessMemoryArea[] $memory_areas |
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*/ |
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public function __construct(array $memory_areas) |
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{ |
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$this->memory_areas = $memory_areas; |
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} |
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public function getBaseAddress(): int |
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{ |
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if (!isset($this->base_address)) { |
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$base_address = PHP_INT_MAX; |
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foreach ($this->memory_areas as $memory_area) { |
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$base_address = min($base_address, hexdec($memory_area->begin)); |
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} |
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$this->base_address = $base_address; |
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} |
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return $this->base_address; |
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} |
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public function getMemoryAddressFromOffset(int $offset): int |
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{ |
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$ranges = $this->getSortedOffsetToMemoryAreaMap(); |
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$file_offset_decided = 0; |
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foreach ($ranges as $file_offset => $memory_begin) { |
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if ($file_offset <= $offset) { |
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$file_offset_decided = $file_offset; |
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} |
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} |
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return $ranges[$file_offset_decided] + ($offset - $file_offset_decided); |
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} |
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public function isInRange(int $address): bool |
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{ |
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foreach ($this->memory_areas as $memory_area) { |
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if ($memory_area->isInRange($address)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* @return array<int, int> |
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*/ |
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private function getSortedOffsetToMemoryAreaMap(): array |
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{ |
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if (!isset($this->sorted_offset_to_memory_map)) { |
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$ranges = []; |
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foreach ($this->memory_areas as $memory_area) { |
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$ranges[hexdec($memory_area->file_offset)] = hexdec($memory_area->begin); |
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} |
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ksort($ranges); |
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$this->sorted_offset_to_memory_map = $ranges; |
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} |
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return $this->sorted_offset_to_memory_map; |
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} |
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} |
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sj-i /
php-profiler
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