File:  [ELWIX - Embedded LightWeight unIX -] / embedaddon / php / Zend / zend_objects.c
Revision 1.1.1.4 (vendor branch): download - view: text, annotated - select for diffs - revision graph
Sun Jun 15 20:04:04 2014 UTC (10 years, 4 months ago) by misho
Branches: php, MAIN
CVS tags: v5_4_29, HEAD
php 5.4.29

    1: /*
    2:    +----------------------------------------------------------------------+
    3:    | Zend Engine                                                          |
    4:    +----------------------------------------------------------------------+
    5:    | Copyright (c) 1998-2014 Zend Technologies Ltd. (http://www.zend.com) |
    6:    +----------------------------------------------------------------------+
    7:    | This source file is subject to version 2.00 of the Zend license,     |
    8:    | that is bundled with this package in the file LICENSE, and is        |
    9:    | available through the world-wide-web at the following url:           |
   10:    | http://www.zend.com/license/2_00.txt.                                |
   11:    | If you did not receive a copy of the Zend license and are unable to  |
   12:    | obtain it through the world-wide-web, please send a note to          |
   13:    | license@zend.com so we can mail you a copy immediately.              |
   14:    +----------------------------------------------------------------------+
   15:    | Authors: Andi Gutmans <andi@zend.com>                                |
   16:    |          Zeev Suraski <zeev@zend.com>                                |
   17:    +----------------------------------------------------------------------+
   18: */
   19: 
   20: /* $Id: zend_objects.c,v 1.1.1.4 2014/06/15 20:04:04 misho Exp $ */
   21: 
   22: #include "zend.h"
   23: #include "zend_globals.h"
   24: #include "zend_variables.h"
   25: #include "zend_API.h"
   26: #include "zend_interfaces.h"
   27: #include "zend_exceptions.h"
   28: 
   29: ZEND_API void zend_object_std_init(zend_object *object, zend_class_entry *ce TSRMLS_DC)
   30: {
   31: 	object->ce = ce;
   32: 	object->properties = NULL;
   33: 	object->properties_table = NULL;
   34: 	object->guards = NULL;
   35: }
   36: 
   37: ZEND_API void zend_object_std_dtor(zend_object *object TSRMLS_DC)
   38: {
   39: 	if (object->guards) {
   40: 		zend_hash_destroy(object->guards);
   41: 		FREE_HASHTABLE(object->guards);
   42: 	}
   43: 	if (object->properties) {
   44: 		zend_hash_destroy(object->properties);
   45: 		FREE_HASHTABLE(object->properties);
   46: 		if (object->properties_table) {
   47: 			efree(object->properties_table);
   48: 		}
   49: 	} else if (object->properties_table) {
   50: 		int i;
   51: 
   52: 		for (i = 0; i < object->ce->default_properties_count; i++) {
   53: 			if (object->properties_table[i]) {
   54: 				zval_ptr_dtor(&object->properties_table[i]);
   55: 			}
   56: 		}
   57: 		efree(object->properties_table);
   58: 	}
   59: }
   60: 
   61: ZEND_API void zend_objects_destroy_object(zend_object *object, zend_object_handle handle TSRMLS_DC)
   62: {
   63: 	zend_function *destructor = object ? object->ce->destructor : NULL;
   64: 
   65: 	if (destructor) {
   66: 		zval *old_exception;
   67: 		zval *obj;
   68: 		zend_object_store_bucket *obj_bucket;
   69: 
   70: 		if (destructor->op_array.fn_flags & (ZEND_ACC_PRIVATE|ZEND_ACC_PROTECTED)) {
   71: 			if (destructor->op_array.fn_flags & ZEND_ACC_PRIVATE) {
   72: 				/* Ensure that if we're calling a private function, we're allowed to do so.
   73: 				 */
   74: 				if (object->ce != EG(scope)) {
   75: 					zend_class_entry *ce = object->ce;
   76: 
   77: 					zend_error(EG(in_execution) ? E_ERROR : E_WARNING,
   78: 						"Call to private %s::__destruct() from context '%s'%s",
   79: 						ce->name,
   80: 						EG(scope) ? EG(scope)->name : "",
   81: 						EG(in_execution) ? "" : " during shutdown ignored");
   82: 					return;
   83: 				}
   84: 			} else {
   85: 				/* Ensure that if we're calling a protected function, we're allowed to do so.
   86: 				 */
   87: 				if (!zend_check_protected(zend_get_function_root_class(destructor), EG(scope))) {
   88: 					zend_class_entry *ce = object->ce;
   89: 
   90: 					zend_error(EG(in_execution) ? E_ERROR : E_WARNING,
   91: 						"Call to protected %s::__destruct() from context '%s'%s",
   92: 						ce->name,
   93: 						EG(scope) ? EG(scope)->name : "",
   94: 						EG(in_execution) ? "" : " during shutdown ignored");
   95: 					return;
   96: 				}
   97: 			}
   98: 		}
   99: 
  100: 		MAKE_STD_ZVAL(obj);
  101: 		Z_TYPE_P(obj) = IS_OBJECT;
  102: 		Z_OBJ_HANDLE_P(obj) = handle;
  103: 		obj_bucket = &EG(objects_store).object_buckets[handle];
  104: 		if (!obj_bucket->bucket.obj.handlers) {
  105: 			obj_bucket->bucket.obj.handlers = &std_object_handlers;
  106: 		}
  107: 		Z_OBJ_HT_P(obj) = obj_bucket->bucket.obj.handlers;
  108: 		zval_copy_ctor(obj);
  109: 
  110: 		/* Make sure that destructors are protected from previously thrown exceptions.
  111: 		 * For example, if an exception was thrown in a function and when the function's
  112: 		 * local variable destruction results in a destructor being called.
  113: 		 */
  114: 		old_exception = NULL;
  115: 		if (EG(exception)) {
  116: 			if (Z_OBJ_HANDLE_P(EG(exception)) == handle) {
  117: 				zend_error(E_ERROR, "Attempt to destruct pending exception");
  118: 			} else {
  119: 				old_exception = EG(exception);
  120: 				EG(exception) = NULL;
  121: 			}
  122: 		}
  123: 		zend_call_method_with_0_params(&obj, object->ce, &destructor, ZEND_DESTRUCTOR_FUNC_NAME, NULL);
  124: 		if (old_exception) {
  125: 			if (EG(exception)) {
  126: 				zend_exception_set_previous(EG(exception), old_exception TSRMLS_CC);
  127: 			} else {
  128: 				EG(exception) = old_exception;
  129: 			}
  130: 		}
  131: 		zval_ptr_dtor(&obj);
  132: 	}
  133: }
  134: 
  135: ZEND_API void zend_objects_free_object_storage(zend_object *object TSRMLS_DC)
  136: {
  137: 	zend_object_std_dtor(object TSRMLS_CC);
  138: 	efree(object);
  139: }
  140: 
  141: ZEND_API zend_object_value zend_objects_new(zend_object **object, zend_class_entry *class_type TSRMLS_DC)
  142: {
  143: 	zend_object_value retval;
  144: 
  145: 	*object = emalloc(sizeof(zend_object));
  146: 	(*object)->ce = class_type;
  147: 	(*object)->properties = NULL;
  148: 	(*object)->properties_table = NULL;
  149: 	(*object)->guards = NULL;
  150: 	retval.handle = zend_objects_store_put(*object, (zend_objects_store_dtor_t) zend_objects_destroy_object, (zend_objects_free_object_storage_t) zend_objects_free_object_storage, NULL TSRMLS_CC);
  151: 	retval.handlers = &std_object_handlers;
  152: 	return retval;
  153: }
  154: 
  155: ZEND_API zend_object *zend_objects_get_address(const zval *zobject TSRMLS_DC)
  156: {
  157: 	return (zend_object *)zend_object_store_get_object(zobject TSRMLS_CC);
  158: }
  159: 
  160: ZEND_API void zend_objects_clone_members(zend_object *new_object, zend_object_value new_obj_val, zend_object *old_object, zend_object_handle handle TSRMLS_DC)
  161: {
  162: 	int i;
  163: 
  164: 	if (old_object->properties_table) {
  165: 		if (!new_object->properties_table) {
  166: 			new_object->properties_table = emalloc(sizeof(zval*) * old_object->ce->default_properties_count);
  167: 			memset(new_object->properties_table, 0, sizeof(zval*) * old_object->ce->default_properties_count);
  168: 		}
  169: 		for (i = 0; i < old_object->ce->default_properties_count; i++) {
  170: 			if (!new_object->properties) {
  171: 				if (new_object->properties_table[i]) {
  172: 					zval_ptr_dtor(&new_object->properties_table[i]);
  173: 				}
  174: 			}
  175: 			if (!old_object->properties) {
  176: 				new_object->properties_table[i] = old_object->properties_table[i];
  177: 				if (new_object->properties_table[i]) {
  178: 					Z_ADDREF_P(new_object->properties_table[i]);
  179: 				}
  180: 			}
  181: 		}
  182: 	}
  183: 	if (old_object->properties) {
  184: 		if (!new_object->properties) {
  185: 			ALLOC_HASHTABLE(new_object->properties);
  186: 			zend_hash_init(new_object->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
  187: 		}
  188: 		zend_hash_copy(new_object->properties, old_object->properties, (copy_ctor_func_t) zval_add_ref, (void *) NULL /* Not used anymore */, sizeof(zval *));
  189: 		if (old_object->properties_table) {
  190: 			HashPosition pos;
  191: 			zend_property_info *prop_info;
  192: 			for (zend_hash_internal_pointer_reset_ex(&old_object->ce->properties_info, &pos);
  193: 			     zend_hash_get_current_data_ex(&old_object->ce->properties_info, (void**)&prop_info, &pos) == SUCCESS;
  194: 			     zend_hash_move_forward_ex(&old_object->ce->properties_info, &pos)) {
  195: 				if ((prop_info->flags & ZEND_ACC_STATIC) == 0) {
  196: 					if (zend_hash_quick_find(new_object->properties, prop_info->name, prop_info->name_length+1, prop_info->h, (void**)&new_object->properties_table[prop_info->offset]) == FAILURE) {
  197: 						new_object->properties_table[prop_info->offset] = NULL;
  198: 					}
  199: 				}
  200: 			}
  201: 		}
  202: 	}
  203: 
  204: 	if (old_object->ce->clone) {
  205: 		zval *new_obj;
  206: 
  207: 		MAKE_STD_ZVAL(new_obj);
  208: 		new_obj->type = IS_OBJECT;
  209: 		new_obj->value.obj = new_obj_val;
  210: 		zval_copy_ctor(new_obj);
  211: 
  212: 		zend_call_method_with_0_params(&new_obj, old_object->ce, &old_object->ce->clone, ZEND_CLONE_FUNC_NAME, NULL);
  213: 
  214: 		zval_ptr_dtor(&new_obj);
  215: 	}
  216: }
  217: 
  218: ZEND_API zend_object_value zend_objects_clone_obj(zval *zobject TSRMLS_DC)
  219: {
  220: 	zend_object_value new_obj_val;
  221: 	zend_object *old_object;
  222: 	zend_object *new_object;
  223: 	zend_object_handle handle = Z_OBJ_HANDLE_P(zobject);
  224: 
  225: 	/* assume that create isn't overwritten, so when clone depends on the
  226: 	 * overwritten one then it must itself be overwritten */
  227: 	old_object = zend_objects_get_address(zobject TSRMLS_CC);
  228: 	new_obj_val = zend_objects_new(&new_object, old_object->ce TSRMLS_CC);
  229: 
  230: 	zend_objects_clone_members(new_object, new_obj_val, old_object, handle TSRMLS_CC);
  231: 
  232: 	return new_obj_val;
  233: }
  234: 
  235: /*
  236:  * Local variables:
  237:  * tab-width: 4
  238:  * c-basic-offset: 4
  239:  * indent-tabs-mode: t
  240:  * End:
  241:  */

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