Imported from /home/lorry/working-area/delta_php2/php-5.4.13.tar.bz2.HEADphp-5.4.13master

1 files changed, 418 insertions, 0 deletions

diff --git a/Zend/zend_objects_API.c b/Zend/zend_objects_API.c
new file mode 100644
index 0000000..1fe5d0c
--- /dev/null
+++ b/Zend/zend_objects_API.c
@@ -0,0 +1,418 @@
+/*
+   +----------------------------------------------------------------------+
+   | Zend Engine                                                          |
+   +----------------------------------------------------------------------+
+   | Copyright (c) 1998-2013 Zend Technologies Ltd. (http://www.zend.com) |
+   +----------------------------------------------------------------------+
+   | This source file is subject to version 2.00 of the Zend license,     |
+   | that is bundled with this package in the file LICENSE, and is        |
+   | available through the world-wide-web at the following url:           |
+   | http://www.zend.com/license/2_00.txt.                                |
+   | If you did not receive a copy of the Zend license and are unable to  |
+   | obtain it through the world-wide-web, please send a note to          |
+   | license@zend.com so we can mail you a copy immediately.              |
+   +----------------------------------------------------------------------+
+   | Authors: Andi Gutmans <andi@zend.com>                                |
+   |          Zeev Suraski <zeev@zend.com>                                |
+   +----------------------------------------------------------------------+
+*/
+
+/* $Id$ */
+
+#include "zend.h"
+#include "zend_globals.h"
+#include "zend_variables.h"
+#include "zend_API.h"
+#include "zend_objects_API.h"
+
+#define ZEND_DEBUG_OBJECTS 0
+
+ZEND_API void zend_objects_store_init(zend_objects_store *objects, zend_uint init_size)
+{
+	objects->object_buckets = (zend_object_store_bucket *) emalloc(init_size * sizeof(zend_object_store_bucket));
+	objects->top = 1; /* Skip 0 so that handles are true */
+	objects->size = init_size;
+	objects->free_list_head = -1;
+	memset(&objects->object_buckets[0], 0, sizeof(zend_object_store_bucket));
+}
+
+ZEND_API void zend_objects_store_destroy(zend_objects_store *objects)
+{
+	efree(objects->object_buckets);
+	objects->object_buckets = NULL;
+}
+
+ZEND_API void zend_objects_store_call_destructors(zend_objects_store *objects TSRMLS_DC)
+{
+	zend_uint i = 1;
+
+	for (i = 1; i < objects->top ; i++) {
+		if (objects->object_buckets[i].valid) {
+			struct _store_object *obj = &objects->object_buckets[i].bucket.obj;
+
+			if (!objects->object_buckets[i].destructor_called) {
+				objects->object_buckets[i].destructor_called = 1;
+				if (obj->dtor && obj->object) {
+					obj->refcount++;
+					obj->dtor(obj->object, i TSRMLS_CC);
+					obj = &objects->object_buckets[i].bucket.obj;
+					obj->refcount--;
+				}
+			}
+		}
+	}
+}
+
+ZEND_API void zend_objects_store_mark_destructed(zend_objects_store *objects TSRMLS_DC)
+{
+	zend_uint i;
+
+	if (!objects->object_buckets) {
+		return;
+	}
+	for (i = 1; i < objects->top ; i++) {
+		if (objects->object_buckets[i].valid) {
+			objects->object_buckets[i].destructor_called = 1;
+		}
+	}
+}
+
+ZEND_API void zend_objects_store_free_object_storage(zend_objects_store *objects TSRMLS_DC)
+{
+	zend_uint i = 1;
+
+	for (i = 1; i < objects->top ; i++) {
+		if (objects->object_buckets[i].valid) {
+			struct _store_object *obj = &objects->object_buckets[i].bucket.obj;
+
+			GC_REMOVE_ZOBJ_FROM_BUFFER(obj);
+
+			objects->object_buckets[i].valid = 0;
+			if (obj->free_storage) {
+				obj->free_storage(obj->object TSRMLS_CC);
+			}
+			/* Not adding to free list as we are shutting down anyway */
+		}
+	}
+}
+
+
+/* Store objects API */
+
+ZEND_API zend_object_handle zend_objects_store_put(void *object, zend_objects_store_dtor_t dtor, zend_objects_free_object_storage_t free_storage, zend_objects_store_clone_t clone TSRMLS_DC)
+{
+	zend_object_handle handle;
+	struct _store_object *obj;
+
+	if (EG(objects_store).free_list_head != -1) {
+		handle = EG(objects_store).free_list_head;
+		EG(objects_store).free_list_head = EG(objects_store).object_buckets[handle].bucket.free_list.next;
+	} else {
+		if (EG(objects_store).top == EG(objects_store).size) {
+			EG(objects_store).size <<= 1;
+			EG(objects_store).object_buckets = (zend_object_store_bucket *) erealloc(EG(objects_store).object_buckets, EG(objects_store).size * sizeof(zend_object_store_bucket));
+		}
+		handle = EG(objects_store).top++;
+	}
+	obj = &EG(objects_store).object_buckets[handle].bucket.obj;
+	EG(objects_store).object_buckets[handle].destructor_called = 0;
+	EG(objects_store).object_buckets[handle].valid = 1;
+	EG(objects_store).object_buckets[handle].apply_count = 0;
+
+	obj->refcount = 1;
+	GC_OBJ_INIT(obj);
+	obj->object = object;
+	obj->dtor = dtor?dtor:(zend_objects_store_dtor_t)zend_objects_destroy_object;
+	obj->free_storage = free_storage;
+	obj->clone = clone;
+	obj->handlers = NULL;
+
+#if ZEND_DEBUG_OBJECTS
+	fprintf(stderr, "Allocated object id #%d\n", handle);
+#endif
+	return handle;
+}
+
+ZEND_API zend_uint zend_objects_store_get_refcount(zval *object TSRMLS_DC)
+{
+	zend_object_handle handle = Z_OBJ_HANDLE_P(object);
+
+	return EG(objects_store).object_buckets[handle].bucket.obj.refcount;
+}
+
+ZEND_API void zend_objects_store_add_ref(zval *object TSRMLS_DC)
+{
+	zend_object_handle handle = Z_OBJ_HANDLE_P(object);
+
+	EG(objects_store).object_buckets[handle].bucket.obj.refcount++;
+#if ZEND_DEBUG_OBJECTS
+	fprintf(stderr, "Increased refcount of object id #%d\n", handle);
+#endif
+}
+
+/*
+ * Add a reference to an objects store entry given the object handle.
+ */
+ZEND_API void zend_objects_store_add_ref_by_handle(zend_object_handle handle TSRMLS_DC)
+{
+	EG(objects_store).object_buckets[handle].bucket.obj.refcount++;
+}
+
+#define ZEND_OBJECTS_STORE_ADD_TO_FREE_LIST()																	\
+			EG(objects_store).object_buckets[handle].bucket.free_list.next = EG(objects_store).free_list_head;	\
+			EG(objects_store).free_list_head = handle;															\
+			EG(objects_store).object_buckets[handle].valid = 0;
+
+ZEND_API void zend_objects_store_del_ref(zval *zobject TSRMLS_DC)
+{
+	zend_object_handle handle;
+
+	handle = Z_OBJ_HANDLE_P(zobject);
+
+	Z_ADDREF_P(zobject);
+	zend_objects_store_del_ref_by_handle_ex(handle, Z_OBJ_HT_P(zobject) TSRMLS_CC);
+	Z_DELREF_P(zobject);
+
+	GC_ZOBJ_CHECK_POSSIBLE_ROOT(zobject);
+}
+
+/*
+ * Delete a reference to an objects store entry given the object handle.
+ */
+ZEND_API void zend_objects_store_del_ref_by_handle_ex(zend_object_handle handle, const zend_object_handlers *handlers TSRMLS_DC) /* {{{ */
+{
+	struct _store_object *obj;
+	int failure = 0;
+
+	if (!EG(objects_store).object_buckets) {
+		return;
+	}
+
+	obj = &EG(objects_store).object_buckets[handle].bucket.obj;
+
+	/*	Make sure we hold a reference count during the destructor call
+		otherwise, when the destructor ends the storage might be freed
+		when the refcount reaches 0 a second time
+	 */
+	if (EG(objects_store).object_buckets[handle].valid) {
+		if (obj->refcount == 1) {
+			if (!EG(objects_store).object_buckets[handle].destructor_called) {
+				EG(objects_store).object_buckets[handle].destructor_called = 1;
+
+				if (obj->dtor) {
+					if (handlers && !obj->handlers) {
+						obj->handlers = handlers;
+					}
+					zend_try {
+						obj->dtor(obj->object, handle TSRMLS_CC);
+					} zend_catch {
+						failure = 1;
+					} zend_end_try();
+				}
+			}
+			
+			/* re-read the object from the object store as the store might have been reallocated in the dtor */
+			obj = &EG(objects_store).object_buckets[handle].bucket.obj;
+
+			if (obj->refcount == 1) {
+				GC_REMOVE_ZOBJ_FROM_BUFFER(obj);
+				if (obj->free_storage) {
+					zend_try {
+						obj->free_storage(obj->object TSRMLS_CC);
+					} zend_catch {
+						failure = 1;
+					} zend_end_try();
+				}
+				ZEND_OBJECTS_STORE_ADD_TO_FREE_LIST();
+			}
+		}
+	}
+
+	obj->refcount--;
+
+#if ZEND_DEBUG_OBJECTS
+	if (obj->refcount == 0) {
+		fprintf(stderr, "Deallocated object id #%d\n", handle);
+	} else {
+		fprintf(stderr, "Decreased refcount of object id #%d\n", handle);
+	}
+#endif
+	if (failure) {
+		zend_bailout();
+	}
+}
+/* }}} */
+
+ZEND_API zend_object_value zend_objects_store_clone_obj(zval *zobject TSRMLS_DC)
+{
+	zend_object_value retval;
+	void *new_object;
+	struct _store_object *obj;
+	zend_object_handle handle = Z_OBJ_HANDLE_P(zobject);
+
+	obj = &EG(objects_store).object_buckets[handle].bucket.obj;
+
+	if (obj->clone == NULL) {
+		zend_error(E_CORE_ERROR, "Trying to clone uncloneable object of class %s", Z_OBJCE_P(zobject)->name);
+	}
+
+	obj->clone(obj->object, &new_object TSRMLS_CC);
+	obj = &EG(objects_store).object_buckets[handle].bucket.obj;
+
+	retval.handle = zend_objects_store_put(new_object, obj->dtor, obj->free_storage, obj->clone TSRMLS_CC);
+	retval.handlers = Z_OBJ_HT_P(zobject);
+	EG(objects_store).object_buckets[handle].bucket.obj.handlers = retval.handlers;
+
+	return retval;
+}
+
+ZEND_API void *zend_object_store_get_object(const zval *zobject TSRMLS_DC)
+{
+	zend_object_handle handle = Z_OBJ_HANDLE_P(zobject);
+
+	return EG(objects_store).object_buckets[handle].bucket.obj.object;
+}
+
+/*
+ * Retrieve an entry from the objects store given the object handle.
+ */
+ZEND_API void *zend_object_store_get_object_by_handle(zend_object_handle handle TSRMLS_DC)
+{
+	return EG(objects_store).object_buckets[handle].bucket.obj.object;
+}
+
+/* zend_object_store_set_object:
+ * It is ONLY valid to call this function from within the constructor of an
+ * overloaded object.  Its purpose is to set the object pointer for the object
+ * when you can't possibly know its value until you have parsed the arguments
+ * from the constructor function.  You MUST NOT use this function for any other
+ * weird games, or call it at any other time after the object is constructed.
+ * */
+ZEND_API void zend_object_store_set_object(zval *zobject, void *object TSRMLS_DC)
+{
+	zend_object_handle handle = Z_OBJ_HANDLE_P(zobject);
+
+	EG(objects_store).object_buckets[handle].bucket.obj.object = object;
+}
+
+
+/* Called when the ctor was terminated by an exception */
+ZEND_API void zend_object_store_ctor_failed(zval *zobject TSRMLS_DC)
+{
+	zend_object_handle handle = Z_OBJ_HANDLE_P(zobject);
+	zend_object_store_bucket *obj_bucket = &EG(objects_store).object_buckets[handle];
+	
+	obj_bucket->bucket.obj.handlers = Z_OBJ_HT_P(zobject);;
+	obj_bucket->destructor_called = 1;
+}
+
+
+/* Proxy objects workings */
+typedef struct _zend_proxy_object {
+	zval *object;
+	zval *property;
+} zend_proxy_object;
+
+static zend_object_handlers zend_object_proxy_handlers;
+
+ZEND_API void zend_objects_proxy_destroy(zend_object *object, zend_object_handle handle TSRMLS_DC)
+{
+}
+
+ZEND_API void zend_objects_proxy_free_storage(zend_proxy_object *object TSRMLS_DC)
+{
+	zval_ptr_dtor(&object->object);
+	zval_ptr_dtor(&object->property);
+	efree(object);
+}
+
+ZEND_API void zend_objects_proxy_clone(zend_proxy_object *object, zend_proxy_object **object_clone TSRMLS_DC)
+{
+	*object_clone = emalloc(sizeof(zend_proxy_object));
+	(*object_clone)->object = object->object;
+	(*object_clone)->property = object->property;
+	zval_add_ref(&(*object_clone)->property);
+	zval_add_ref(&(*object_clone)->object);
+}
+
+ZEND_API zval *zend_object_create_proxy(zval *object, zval *member TSRMLS_DC)
+{
+	zend_proxy_object *pobj = emalloc(sizeof(zend_proxy_object));
+	zval *retval;
+
+	pobj->object = object;
+	zval_add_ref(&pobj->object);
+	ALLOC_ZVAL(pobj->property);
+	INIT_PZVAL_COPY(pobj->property, member);
+	zval_copy_ctor(pobj->property);
+
+	MAKE_STD_ZVAL(retval);
+	Z_TYPE_P(retval) = IS_OBJECT;
+	Z_OBJ_HANDLE_P(retval) = zend_objects_store_put(pobj, (zend_objects_store_dtor_t)zend_objects_proxy_destroy, (zend_objects_free_object_storage_t) zend_objects_proxy_free_storage, (zend_objects_store_clone_t) zend_objects_proxy_clone TSRMLS_CC);
+	Z_OBJ_HT_P(retval) = &zend_object_proxy_handlers;
+
+	return retval;
+}
+
+ZEND_API void zend_object_proxy_set(zval **property, zval *value TSRMLS_DC)
+{
+	zend_proxy_object *probj = zend_object_store_get_object(*property TSRMLS_CC);
+
+	if (Z_OBJ_HT_P(probj->object) && Z_OBJ_HT_P(probj->object)->write_property) {
+		Z_OBJ_HT_P(probj->object)->write_property(probj->object, probj->property, value, 0 TSRMLS_CC);
+	} else {
+		zend_error(E_WARNING, "Cannot write property of object - no write handler defined");
+	}
+}
+
+ZEND_API zval* zend_object_proxy_get(zval *property TSRMLS_DC)
+{
+	zend_proxy_object *probj = zend_object_store_get_object(property TSRMLS_CC);
+
+	if (Z_OBJ_HT_P(probj->object) && Z_OBJ_HT_P(probj->object)->read_property) {
+		return Z_OBJ_HT_P(probj->object)->read_property(probj->object, probj->property, BP_VAR_R, 0 TSRMLS_CC);
+	} else {
+		zend_error(E_WARNING, "Cannot read property of object - no read handler defined");
+	}
+
+	return NULL;
+}
+
+ZEND_API zend_object_handlers *zend_get_std_object_handlers(void)
+{
+	return &std_object_handlers;
+}
+
+static zend_object_handlers zend_object_proxy_handlers = {
+	ZEND_OBJECTS_STORE_HANDLERS,
+
+	NULL,						/* read_property */
+	NULL,						/* write_property */
+	NULL,						/* read dimension */
+	NULL,						/* write_dimension */
+	NULL,						/* get_property_ptr_ptr */
+	zend_object_proxy_get,		/* get */
+	zend_object_proxy_set,		/* set */
+	NULL,						/* has_property */
+	NULL,						/* unset_property */
+	NULL,						/* has_dimension */
+	NULL,						/* unset_dimension */
+	NULL,						/* get_properties */
+	NULL,						/* get_method */
+	NULL,						/* call_method */
+	NULL,						/* get_constructor */
+	NULL,						/* get_class_entry */
+	NULL,						/* get_class_name */
+	NULL,						/* compare_objects */
+	NULL,						/* cast_object */
+	NULL,						/* count_elements */
+};
+
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * indent-tabs-mode: t
+ * End:
+ */