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#include "zend.h"
#include "zend_globals.h"
#include "zend_variables.h"
#include "zend_API.h"
#define ZEND_DEBUG_OBJECTS 0
static zend_object_handlers zoh = {
zend_objects_get_address,
NULL,
zend_objects_add_ref,
zend_objects_del_ref,
zend_objects_delete_obj,
zend_objects_clone_obj
};
void zend_objects_init(zend_objects *objects, zend_uint init_size)
{
objects->object_buckets = (zend_object_bucket *) emalloc(init_size * sizeof(zend_object_bucket));
objects->top = 1; /* Skip 0 so that handles are true */
objects->size = init_size;
objects->free_list_head = -1;
}
void zend_objects_destroy(zend_objects *objects)
{
efree(objects->object_buckets);
}
zend_object_value zend_objects_new(zend_object **object, zend_class_entry *class_type)
{
zend_object_handle handle;
zend_object_value retval;
TSRMLS_FETCH();
if (EG(objects).free_list_head != -1) {
handle = EG(objects).free_list_head;
EG(objects).free_list_head = EG(objects).object_buckets[handle].bucket.free_list.next;
} else {
if (EG(objects).top == EG(objects).size) {
EG(objects).size <<= 1;
EG(objects).object_buckets = (zend_object_bucket *) erealloc(EG(objects).object_buckets, EG(objects).size * sizeof(zend_object_bucket));
}
handle = EG(objects).top++;
}
EG(objects).object_buckets[handle].valid = 1;
EG(objects).object_buckets[handle].bucket.obj.refcount = 1;
*object = &EG(objects).object_buckets[handle].bucket.obj.object;
(*object)->ce = class_type;
retval.handle = handle;
retval.handlers = &zoh;
#if ZEND_DEBUG_OBJECTS
fprintf(stderr, "Allocated object id #%d\n", handle);
#endif
return retval;
}
zend_object *zend_objects_get_address(zend_object_handle handle)
{
TSRMLS_FETCH();
if (!EG(objects).object_buckets[handle].valid) {
zend_error(E_ERROR, "Trying to access invalid object");
}
return &EG(objects).object_buckets[handle].bucket.obj.object;
}
void zend_objects_add_ref(zend_object_handle handle)
{
TSRMLS_FETCH();
if (!EG(objects).object_buckets[handle].valid) {
zend_error(E_ERROR, "Trying to add reference to invalid object");
}
EG(objects).object_buckets[handle].bucket.obj.refcount++;
#if ZEND_DEBUG_OBJECTS
fprintf(stderr, "Increased refcount of object id #%d\n", handle);
#endif
}
void zend_objects_delete_obj(zend_object_handle handle)
{
zend_object *object;
TSRMLS_FETCH();
if (!EG(objects).object_buckets[handle].valid) {
zend_error(E_ERROR, "Trying to delete invalid object");
}
object = &EG(objects).object_buckets[handle].bucket.obj.object;
zend_hash_destroy(object->properties);
efree(object->properties);
EG(objects).object_buckets[handle].valid = 0;
#if ZEND_DEBUG_OBJECTS
fprintf(stderr, "Deleted object id #%d\n", handle);
#endif
}
void zend_objects_del_ref(zend_object_handle handle)
{
TSRMLS_FETCH();
if (--EG(objects).object_buckets[handle].bucket.obj.refcount == 0) {
zend_object *object;
if (EG(objects).object_buckets[handle].valid) {
object = &EG(objects).object_buckets[handle].bucket.obj.object;
zend_hash_destroy(object->properties);
efree(object->properties);
}
EG(objects).object_buckets[handle].bucket.free_list.next = EG(objects).free_list_head;
EG(objects).free_list_head = handle;
EG(objects).object_buckets[handle].valid = 0;
#if ZEND_DEBUG_OBJECTS
fprintf(stderr, "Deallocated object id #%d\n", handle);
#endif
}
#if ZEND_DEBUG_OBJECTS
else {
fprintf(stderr, "Decreased refcount of object id #%d\n", handle);
}
#endif
}
zend_object_value zend_objects_clone_obj(zend_object_handle handle)
{
zend_object_value retval;
zend_object *old_object;
zend_object *new_object;
TSRMLS_FETCH();
if (!EG(objects).object_buckets[handle].valid) {
zend_error(E_ERROR, "Trying to clone invalid object");
}
old_object = &EG(objects).object_buckets[handle].bucket.obj.object;
retval = zend_objects_new(&new_object, old_object->ce);
if (old_object->ce->clone) {
zval *old_obj;
zval *new_obj;
zval *clone_func_name;
zval *retval_ptr;
HashTable symbol_table;
MAKE_STD_ZVAL(new_obj);
new_obj->type = IS_OBJECT;
new_obj->value.obj = retval;
zval_copy_ctor(new_obj);
MAKE_STD_ZVAL(old_obj);
old_obj->type = IS_OBJECT;
old_obj->value.obj.handle = handle;
old_obj->value.obj.handlers = &zoh; /* If we reached here than the handlers are zoh */
zval_copy_ctor(old_obj);
/* FIXME: Optimize this so that we use the old_object->ce->clone function pointer instead of the name */
MAKE_STD_ZVAL(clone_func_name);
clone_func_name->type = IS_STRING;
clone_func_name->value.str.val = estrndup("_clone", sizeof("_clone")-1);
clone_func_name->value.str.len = sizeof("_clone")-1;
ALLOC_HASHTABLE(new_object->properties);
zend_hash_init(new_object->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
ZEND_INIT_SYMTABLE(&symbol_table);
ZEND_SET_SYMBOL(&symbol_table, "clone", old_obj);
call_user_function_ex(NULL, &new_obj, clone_func_name, &retval_ptr, 0, NULL, 0, &symbol_table TSRMLS_CC);
zend_hash_destroy(&symbol_table);
zval_ptr_dtor(&new_obj);
zval_ptr_dtor(&clone_func_name);
zval_ptr_dtor(&retval_ptr);
} else {
ALLOC_HASHTABLE(new_object->properties);
zend_hash_init(new_object->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
zend_hash_copy(new_object->properties, old_object->properties, (copy_ctor_func_t) zval_add_ref, (void *) NULL /* Not used anymore */, sizeof(zval *));
}
return retval;
}
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