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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\Command\Inspector; |
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use PhpProfiler\Inspector\Output\TraceOutput\TraceOutputFactory; |
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use PhpProfiler\Inspector\RetryingLoopProvider; |
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use PhpProfiler\Inspector\Settings\GetTraceSettings\GetTraceSettingsFromConsoleInput; |
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use PhpProfiler\Inspector\Settings\InspectorSettingsException; |
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use PhpProfiler\Inspector\Settings\OutputSettings\OutputSettingsFromConsoleInput; |
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use PhpProfiler\Inspector\Settings\TargetPhpSettings\TargetPhpSettingsFromConsoleInput; |
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use PhpProfiler\Inspector\Settings\TargetProcessSettings\TargetProcessSettingsFromConsoleInput; |
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use PhpProfiler\Inspector\Settings\TraceLoopSettings\TraceLoopSettingsFromConsoleInput; |
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use PhpProfiler\Inspector\TargetProcess\TargetProcessResolver; |
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use PhpProfiler\Inspector\TraceLoopProvider; |
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use PhpProfiler\Lib\Elf\Parser\ElfParserException; |
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use PhpProfiler\Lib\Elf\Process\ProcessSymbolReaderException; |
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use PhpProfiler\Lib\Elf\Tls\TlsFinderException; |
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use PhpProfiler\Lib\PhpProcessReader\PhpGlobalsFinder; |
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use PhpProfiler\Lib\PhpProcessReader\PhpVersionDetector; |
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use PhpProfiler\Lib\PhpProcessReader\TraceCache; |
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use PhpProfiler\Lib\Process\MemoryReader\MemoryReaderException; |
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use PhpProfiler\Lib\PhpProcessReader\PhpMemoryReader\CallTraceReader; |
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use PhpProfiler\Lib\Process\ProcessStopper\ProcessStopper; |
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use Symfony\Component\Console\Command\Command; |
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use Symfony\Component\Console\Input\InputInterface; |
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use Symfony\Component\Console\Output\OutputInterface; |
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use function PhpProfiler\Lib\Defer\defer; |
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final class GetTraceCommand extends Command |
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{ |
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public function __construct( |
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private PhpGlobalsFinder $php_globals_finder, |
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private PhpVersionDetector $php_version_detector, |
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private CallTraceReader $executor_globals_reader, |
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private TraceLoopProvider $loop_provider, |
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private GetTraceSettingsFromConsoleInput $get_trace_settings_from_console_input, |
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private TargetPhpSettingsFromConsoleInput $target_php_settings_from_console_input, |
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private TargetProcessSettingsFromConsoleInput $target_process_settings_from_console_input, |
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private TraceLoopSettingsFromConsoleInput $trace_loop_settings_from_console_input, |
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private OutputSettingsFromConsoleInput $output_settings_from_console_input, |
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private TraceOutputFactory $trace_output_factory, |
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private ProcessStopper $process_stopper, |
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private TargetProcessResolver $target_process_resolver, |
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private RetryingLoopProvider $retrying_loop_provider, |
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) { |
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parent::__construct(); |
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} |
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public function configure(): void |
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{ |
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$this->setName('inspector:trace') |
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->setDescription('periodically get call trace from an outer process or thread') |
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; |
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$this->target_process_settings_from_console_input->setOptions($this); |
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$this->get_trace_settings_from_console_input->setOptions($this); |
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$this->trace_loop_settings_from_console_input->setOptions($this); |
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$this->target_php_settings_from_console_input->setOptions($this); |
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$this->output_settings_from_console_input->setOptions($this); |
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} |
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/** |
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* @throws MemoryReaderException |
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* @throws ProcessSymbolReaderException |
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* @throws ElfParserException |
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* @throws TlsFinderException |
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* @throws InspectorSettingsException |
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*/ |
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public function execute(InputInterface $input, OutputInterface $output): int |
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{ |
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$get_trace_settings = $this->get_trace_settings_from_console_input->createSettings($input); |
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$target_php_settings = $this->target_php_settings_from_console_input->createSettings($input); |
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$target_process_settings = $this->target_process_settings_from_console_input->createSettings($input); |
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$loop_settings = $this->trace_loop_settings_from_console_input->createSettings($input); |
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$trace_output = $this->trace_output_factory->fromSettingsAndConsoleOutput( |
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$output, |
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$this->output_settings_from_console_input->createSettings($input), |
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); |
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$process_specifier = $this->target_process_resolver->resolve($target_process_settings); |
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$target_php_settings = $this->php_version_detector->decidePhpVersion( |
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$process_specifier, |
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$target_php_settings |
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); |
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// On targeting ZTS, it's possible that libpthread.so of the target process isn't yet loaded |
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// at this point. In that case the TLS block can't be located, then the address of EG can't |
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// be found also. So simply retrying the whole process of finding EG here. |
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$eg_address = $this->retrying_loop_provider->do( |
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try: fn () => $this->php_globals_finder->findExecutorGlobals( |
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$process_specifier, |
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$target_php_settings |
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), |
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retry_on: [\Throwable::class], |
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max_retry: 10, |
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interval_on_retry_ns: 1000 * 1000 * 10, |
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); |
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$sg_address = $this->php_globals_finder->findSAPIGlobals( |
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$process_specifier, |
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$target_php_settings |
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); |
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$trace_cache = new TraceCache(); |
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$this->loop_provider->getMainLoop( |
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function () use ( |
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$get_trace_settings, |
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$process_specifier, |
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$target_php_settings, |
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$loop_settings, |
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$eg_address, |
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$sg_address, |
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$trace_output, |
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$trace_cache, |
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): bool { |
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assert($target_php_settings->isDecided()); |
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if ($loop_settings->stop_process and $this->process_stopper->stop($process_specifier->pid)) { |
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defer($_, fn () => $this->process_stopper->resume($process_specifier->pid)); |
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} |
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$call_trace = $this->executor_globals_reader->readCallTrace( |
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$process_specifier->pid, |
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$target_php_settings->php_version, |
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$eg_address, |
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$sg_address, |
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$get_trace_settings->depth, |
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$trace_cache |
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); |
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if (!is_null($call_trace)) { |
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$trace_output->output($call_trace); |
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} |
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return true; |
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}, |
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$loop_settings |
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)->invoke(); |
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return 0; |
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} |
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} |
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reliforp /
reli-prof
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