Improve trace parcing performance

About 19% faster for a large Laravel project with a 16GB trace

Author: AJenbo

composer.json

@@ -14,7 +14,8 @@
         "php": "^7.4|^8.0",
         "ext-xdebug": "*",
         "composer/xdebug-handler": "^3.0",
-        "symfony/console": "^5.4"
+        "symfony/console": "^5.4",
+        "symfony/polyfill-php80": "^1.27"
     },
     "require-dev": {
         "mockery/mockery": "^1.6",

composer.lock

@@ -92,6 +92,9 @@ protected function execute(InputInterface $input, OutputInterface $output): int
         foreach ($paths as $path) {
             if (!is_string($path))
                 return self::RETURN_CODE_ERROR;
+            $path = realpath($path);
+            if (!$path)
+                return self::RETURN_CODE_ERROR;
             $pathsToWeave[] = $path;
         }
         $tracefile = $input->getOption('tracefile');
@@ -103,7 +106,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 
         $filesToWeave = $this->getFilesToProcess($pathsToWeave);
 
-        $sigs = $this->parseTrace($tracefile);
+        $sigs = $this->parseTrace($tracefile, $pathsToWeave);
         $this->transformFiles($filesToWeave, $sigs);
 
         return self::RETURN_CODE_OK;
@@ -146,13 +149,15 @@ private function getFilesToProcess(array $pathsToWeave): array
 
     /**
      * Parse the trace file.
+     *
+     * @param string[] $pathsToWeave
      */
-    private function parseTrace(string $tracefile): Signatures
+    private function parseTrace(string $tracefile, array $pathsToWeave): Signatures
     {
         $sigs = new Signatures();
         if (is_file($tracefile)) {
             $traceFile = new SplFileObject($tracefile);
-            $trace = new TraceReader(new FunctionTracer(new TraceSignatureLogger($sigs)));
+            $trace = new TraceReader(new FunctionTracer(new TraceSignatureLogger($sigs)), $pathsToWeave);
 
             $traceFile->setFlags(SplFileObject::READ_AHEAD);
             $this->progressBarStart(iterator_count($traceFile), '<info>Parsing tracefile …</info>');