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