fix bug 78076 Opcache greatly increases memory usage.

ext/opcache/ZendAccelerator.c

@@ -1816,6 +1816,9 @@ zend_op_array *file_cache_compile_file(zend_file_handle *file_handle, int type)
 {
 	zend_persistent_script *persistent_script;
 	zend_op_array *op_array = NULL;
+	int is_should_release_outside = 0;
+	zend_arena *arena = NULL;
+	void *checkpoint;
 	int from_memory; /* if the script we've got is stored in SHM */
 
 	if (is_stream_path(file_handle->filename) &&
@@ -1840,7 +1843,7 @@ zend_op_array *file_cache_compile_file(zend_file_handle *file_handle, int type)
 
 	HANDLE_BLOCK_INTERRUPTIONS();
 	SHM_UNPROTECT();
-	persistent_script = zend_file_cache_script_load(file_handle);
+	persistent_script = zend_file_cache_script_load(file_handle ,&is_should_release_outside,&arena,&checkpoint);
 	SHM_PROTECT();
 	HANDLE_UNBLOCK_INTERRUPTIONS();
 	if (persistent_script) {
@@ -1871,8 +1874,11 @@ zend_op_array *file_cache_compile_file(zend_file_handle *file_handle, int type)
 	    if (persistent_script->ping_auto_globals_mask) {
 			zend_accel_set_auto_globals(persistent_script->ping_auto_globals_mask);
 		}
-
-		return zend_accel_load_script(persistent_script, 1);
+		op_array = zend_accel_load_script(persistent_script, 1);
+		if(is_should_release_outside){
+		    zend_arena_release(&arena, checkpoint);
+		}
+		return op_array;
 	}
 
 	persistent_script = opcache_compile_file(file_handle, type, NULL, &op_array);
@@ -1916,6 +1922,10 @@ zend_op_array *persistent_compile_file(zend_file_handle *file_handle, int type)
 	char *key = NULL;
 	int key_length;
 	int from_shared_memory; /* if the script we've got is stored in SHM */
+	zend_op_array *op_array = NULL;
+	int is_should_release_outside = 0;
+	zend_arena *arena = NULL;
+	void *checkpoint  = NULL;
 
 	if (!file_handle->filename || !ZCG(accelerator_enabled)) {
 		/* The Accelerator is disabled, act as if without the Accelerator */
@@ -2100,7 +2110,7 @@ zend_op_array *persistent_compile_file(zend_file_handle *file_handle, int type)
 
 	/* Check the second level cache */
 	if (!persistent_script && ZCG(accel_directives).file_cache) {
-		persistent_script = zend_file_cache_script_load(file_handle);
+		persistent_script = zend_file_cache_script_load(file_handle,&is_should_release_outside,&arena,&checkpoint);
 	}
 
 	/* If script was not found or invalidated by validate_timestamps */
@@ -2200,8 +2210,11 @@ zend_op_array *persistent_compile_file(zend_file_handle *file_handle, int type)
     if (persistent_script->ping_auto_globals_mask) {
 		zend_accel_set_auto_globals(persistent_script->ping_auto_globals_mask);
 	}
-
-	return zend_accel_load_script(persistent_script, from_shared_memory);
+	op_array = zend_accel_load_script(persistent_script, from_shared_memory);
+	if(from_shared_memory && is_should_release_outside){
+		zend_arena_release(&arena, checkpoint);
+	}
+	return op_array;
 }
 
 #ifdef ZEND_WIN32

ext/opcache/tests/bug78076.phpt

@@ -0,0 +1,20 @@
+--TEST--
+Bug #78076	Opcache greatly increases memory usage.
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.file_cache="{TMP}"
+opcache.file_cache_only=1
+--SKIPIF--
+--FILE--
+<?php
+$start =  memory_get_usage();
+for ($x = 1; $x < 10000; $x += 1) {
+    include("leaktest.inc");
+}
+$end = memory_get_usage();
+var_dump($end - $start < 1000);
+?>
+--EXPECT--
+bool(true)
+

ext/opcache/tests/leaktest.inc

@@ -0,0 +1,2 @@
+<?php
+$a='hello world';

ext/opcache/zend_file_cache.c

@@ -1521,7 +1521,7 @@ static void zend_file_cache_unserialize(zend_persistent_script  *script,
 	UNSERIALIZE_PTR(script->arena_mem);
 }
 
-zend_persistent_script *zend_file_cache_script_load(zend_file_handle *file_handle)
+zend_persistent_script *zend_file_cache_script_load(zend_file_handle *file_handle,int *is_should_release_outside,zend_arena **arena_ptr,void **checkpoint_ptr)
 {
 	zend_string *full_path = file_handle->opened_path;
 	int fd;
@@ -1669,6 +1669,9 @@ zend_persistent_script *zend_file_cache_script_load(zend_file_handle *file_handl
 		zend_map_ptr_extend(ZCSG(map_ptr_last));
 	} else {
 use_process_mem:
+		*is_should_release_outside = 1;
+		*arena_ptr = CG(arena);
+		*checkpoint_ptr = checkpoint;
 		buf = mem;
 		cache_it = 0;
 	}

ext/opcache/zend_file_cache.h

@@ -20,7 +20,7 @@
 #define ZEND_FILE_CACHE_H
 
 int zend_file_cache_script_store(zend_persistent_script *script, int in_shm);
-zend_persistent_script *zend_file_cache_script_load(zend_file_handle *file_handle);
+zend_persistent_script *zend_file_cache_script_load(zend_file_handle *file_handle,int *is_should_release_outside,zend_arena **arena_ptr,void **checkpoint_ptr);
 void zend_file_cache_invalidate(zend_string *full_path);
 
 #endif /* ZEND_FILE_CACHE_H */