Add gc_mem_caches() call for PHP7 after itoken_get_all() as new memory manager will not release small buckets to OS automatically

src/Symfony/Bundle/FrameworkBundle/Translation/PhpExtractor.php

@@ -61,6 +61,11 @@ class PhpExtractor implements ExtractorInterface
         $files = $finder->files()->name('*.php')->in($directory);
         foreach ($files as $file) {
             $this->parseTokens(token_get_all(file_get_contents($file)), $catalog);
+
+            if (PHP_VERSION_ID >= 70000) {
+                // PHP 7 memory manager will not release after token_get_all(), see https://bugs.php.net/70098
+                gc_mem_caches();
+            }
         }
     }
 

src/Symfony/Component/ClassLoader/ClassCollectionLoader.php

@@ -193,7 +193,15 @@ class ClassCollectionLoader
             $rawChunk .= "}\n";
         }
 
-        return $output.self::compressCode($rawChunk);
+        $output .= self::compressCode($rawChunk);
+
+        if (PHP_VERSION_ID >= 70000) {
+            // PHP 7 memory manager will not release after token_get_all(), see https://bugs.php.net/70098
+            unset($tokens, $rawChunk);
+            gc_mem_caches();
+        }
+
+        return $output;
     }
 
     /**

src/Symfony/Component/ClassLoader/ClassMapGenerator.php

@@ -72,6 +72,11 @@ class ClassMapGenerator
 
             $classes = self::findClasses($path);
 
+            if (PHP_VERSION_ID >= 70000) {
+                // PHP 7 memory manager will not release after token_get_all(), see https://bugs.php.net/70098
+                gc_mem_caches();
+            }
+
             foreach ($classes as $class) {
                 $map[$class] = $path;
             }

src/Symfony/Component/HttpKernel/Kernel.php

@@ -733,6 +733,12 @@ abstract class Kernel implements KernelInterface, TerminableInterface
 
         $output .= $rawChunk;
 
+        if (PHP_VERSION_ID >= 70000) {
+            // PHP 7 memory manager will not release after token_get_all(), see https://bugs.php.net/70098
+            unset($tokens, $rawChunk);
+            gc_mem_caches();
+        }
+
         return $output;
     }
 

src/Symfony/Component/Routing/Loader/AnnotationFileLoader.php

@@ -64,6 +64,10 @@ class AnnotationFileLoader extends FileLoader
             $collection->addResource(new FileResource($path));
             $collection->addCollection($this->loader->load($class, $type));
         }
+        if (PHP_VERSION_ID >= 70000) {
+            // PHP 7 memory manager will not release after token_get_all(), see https://bugs.php.net/70098
+            gc_mem_caches();
+        }
 
         return $collection;
     }