mirror of
https://github.com/php/php-src.git
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328 lines
9.8 KiB
C
328 lines
9.8 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2014 Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@zend.com> |
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| Zeev Suraski <zeev@zend.com> |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#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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#include "zend_objects_API.h"
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ZEND_API void zend_objects_store_init(zend_objects_store *objects, zend_uint init_size)
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{
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objects->object_buckets = (zend_object **) emalloc(init_size * sizeof(zend_object*));
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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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memset(&objects->object_buckets[0], 0, sizeof(zend_object*));
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}
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ZEND_API void zend_objects_store_destroy(zend_objects_store *objects)
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{
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efree(objects->object_buckets);
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objects->object_buckets = NULL;
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}
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ZEND_API void zend_objects_store_call_destructors(zend_objects_store *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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zend_object *obj = objects->object_buckets[i];
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if (IS_VALID(obj)) {
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if (!(obj->gc.u.v.flags & IS_OBJ_DESTRUCTOR_CALLED)) {
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obj->gc.u.v.flags |= IS_OBJ_DESTRUCTOR_CALLED;
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obj->gc.refcount++;
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obj->handlers->dtor_obj(obj TSRMLS_CC);
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obj->gc.refcount--;
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if (obj->gc.refcount == 0) {
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GC_REMOVE_ZOBJ_FROM_BUFFER(obj TSRMLS_CC);
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}
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}
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}
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}
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}
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ZEND_API void zend_objects_store_mark_destructed(zend_objects_store *objects TSRMLS_DC)
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{
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zend_uint i;
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if (!objects->object_buckets) {
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return;
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}
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for (i = 1; i < objects->top ; i++) {
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zend_object *obj = objects->object_buckets[i];
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if (IS_VALID(obj)) {
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obj->gc.u.v.flags |= IS_OBJ_DESTRUCTOR_CALLED;
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}
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}
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}
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ZEND_API void zend_objects_store_free_object_storage(zend_objects_store *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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zend_object *obj = objects->object_buckets[i];
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if (IS_VALID(obj)) {
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GC_REMOVE_ZOBJ_FROM_BUFFER(obj TSRMLS_CC);
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objects->object_buckets[i] = SET_INVALID(obj);
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if (obj->handlers->free_obj) {
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obj->handlers->free_obj(obj TSRMLS_CC);
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}
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/* Not adding to free list as we are shutting down anyway */
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}
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}
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}
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/* Store objects API */
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ZEND_API void zend_objects_store_put(zend_object *object TSRMLS_DC)
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{
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int handle;
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if (EG(objects_store).free_list_head != -1) {
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handle = EG(objects_store).free_list_head;
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EG(objects_store).free_list_head = GET_BUCKET_NUMBER(EG(objects_store).object_buckets[handle]);
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} else {
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if (EG(objects_store).top == EG(objects_store).size) {
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EG(objects_store).size <<= 1;
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EG(objects_store).object_buckets = (zend_object **) erealloc(EG(objects_store).object_buckets, EG(objects_store).size * sizeof(zend_object*));
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}
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handle = EG(objects_store).top++;
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}
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object->handle = handle;
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EG(objects_store).object_buckets[handle] = object;
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}
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#define ZEND_OBJECTS_STORE_ADD_TO_FREE_LIST(handle) \
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SET_BUCKET_NUMBER(EG(objects_store).object_buckets[handle], EG(objects_store).free_list_head); \
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EG(objects_store).free_list_head = handle;
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ZEND_API void zend_objects_store_del(zend_object *object TSRMLS_DC) /* {{{ */
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{
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/* Make sure we hold a reference count during the destructor call
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otherwise, when the destructor ends the storage might be freed
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when the refcount reaches 0 a second time
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*/
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if (EG(objects_store).object_buckets &&
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IS_VALID(EG(objects_store).object_buckets[object->handle])) {
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if (object->gc.refcount == 0) {
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int failure = 0;
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if (!(object->gc.u.v.flags & IS_OBJ_DESTRUCTOR_CALLED)) {
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object->gc.u.v.flags |= IS_OBJ_DESTRUCTOR_CALLED;
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if (object->handlers->dtor_obj) {
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object->gc.refcount++;
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zend_try {
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object->handlers->dtor_obj(object TSRMLS_CC);
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} zend_catch {
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failure = 1;
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} zend_end_try();
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object->gc.refcount--;
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}
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}
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if (object->gc.refcount == 0) {
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zend_uint handle = object->handle;
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//??? GC_REMOVE_ZOBJ_FROM_BUFFER(obj);
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if (object->handlers->free_obj) {
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zend_try {
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object->handlers->free_obj(object TSRMLS_CC);
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} zend_catch {
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failure = 1;
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} zend_end_try();
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}
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ZEND_OBJECTS_STORE_ADD_TO_FREE_LIST(handle);
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}
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if (failure) {
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zend_bailout();
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}
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} else {
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object->gc.refcount--;
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}
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}
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}
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/* }}} */
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//???
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#if 0
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ZEND_API zend_object *zend_objects_store_clone_obj(zval *zobject TSRMLS_DC)
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{
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zend_object *obj, *new_object;
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//??? struct _store_object *obj;
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//??? zend_object_handle handle = Z_OBJ_HANDLE_P(zobject);
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//??? obj = &EG(objects_store).object_buckets[handle].bucket.obj;
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//??? if (obj->clone == NULL) {
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//??? zend_error(E_CORE_ERROR, "Trying to clone uncloneable object of class %s", Z_OBJCE_P(zobject)->name);
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//??? }
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obj = Z_OBJ_P(zobject);
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new_object = obj->handlers->clone_obj(obj TSRMLS_CC);
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obj = &EG(objects_store).object_buckets[handle].bucket.obj;
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retval.handle = zend_objects_store_put(new_object, obj->dtor, obj->free_storage, obj->clone TSRMLS_CC);
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retval.handlers = Z_OBJ_HT_P(zobject);
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EG(objects_store).object_buckets[handle].bucket.obj.handlers = retval.handlers;
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return retval;
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}
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#endif
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/* zend_object_store_set_object:
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* It is ONLY valid to call this function from within the constructor of an
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* overloaded object. Its purpose is to set the object pointer for the object
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* when you can't possibly know its value until you have parsed the arguments
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* from the constructor function. You MUST NOT use this function for any other
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* weird games, or call it at any other time after the object is constructed.
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* */
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ZEND_API void zend_object_store_set_object(zval *zobject, zend_object *object TSRMLS_DC)
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{
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EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(zobject)] = object;
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}
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/* Called when the ctor was terminated by an exception */
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ZEND_API void zend_object_store_ctor_failed(zval *zobject TSRMLS_DC)
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{
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zend_object *obj = Z_OBJ_P(zobject);
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obj->gc.u.v.flags |= IS_OBJ_DESTRUCTOR_CALLED;
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}
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/* Proxy objects workings */
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typedef struct _zend_proxy_object {
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zend_object std;
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zval object;
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zval property;
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} zend_proxy_object;
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static zend_object_handlers zend_object_proxy_handlers;
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ZEND_API void zend_objects_proxy_destroy(zend_object *object TSRMLS_DC)
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{
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}
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ZEND_API void zend_objects_proxy_free_storage(zend_proxy_object *object TSRMLS_DC)
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{
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zval_ptr_dtor(&object->object);
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zval_ptr_dtor(&object->property);
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efree(object);
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}
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ZEND_API void zend_objects_proxy_clone(zend_proxy_object *object, zend_proxy_object **object_clone TSRMLS_DC)
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{
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*object_clone = emalloc(sizeof(zend_proxy_object));
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(*object_clone)->object = object->object;
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(*object_clone)->property = object->property;
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Z_ADDREF_P(&(*object_clone)->property);
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Z_ADDREF_P(&(*object_clone)->object);
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}
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ZEND_API zend_object *zend_object_create_proxy(zval *object, zval *member TSRMLS_DC)
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{
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zend_proxy_object *obj = emalloc(sizeof(zend_proxy_object));
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obj->std.gc.refcount = 1;
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obj->std.gc.u.v.type = IS_OBJECT;
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obj->std.gc.u.v.buffer = 0;
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obj->std.ce = NULL;
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obj->std.properties = NULL;
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obj->std.guards = NULL;
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obj->std.handlers = &zend_object_proxy_handlers;
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ZVAL_COPY(&obj->object, object);
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ZVAL_DUP(&obj->property, member);
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return (zend_object*)obj;
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}
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ZEND_API void zend_object_proxy_set(zval *property, zval *value TSRMLS_DC)
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{
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zend_proxy_object *probj = (zend_proxy_object*)Z_OBJ_P(property);
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if (Z_OBJ_HT(probj->object) && Z_OBJ_HT(probj->object)->write_property) {
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Z_OBJ_HT(probj->object)->write_property(&probj->object, &probj->property, value, 0 TSRMLS_CC);
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} else {
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zend_error(E_WARNING, "Cannot write property of object - no write handler defined");
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}
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}
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ZEND_API zval* zend_object_proxy_get(zval *property TSRMLS_DC)
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{
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zend_proxy_object *probj = (zend_proxy_object*)Z_OBJ_P(property);
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if (Z_OBJ_HT(probj->object) && Z_OBJ_HT(probj->object)->read_property) {
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return Z_OBJ_HT(probj->object)->read_property(&probj->object, &probj->property, BP_VAR_R, 0 TSRMLS_CC);
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} else {
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zend_error(E_WARNING, "Cannot read property of object - no read handler defined");
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}
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return NULL;
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}
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ZEND_API zend_object_handlers *zend_get_std_object_handlers(void)
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{
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return &std_object_handlers;
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}
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static zend_object_handlers zend_object_proxy_handlers = {
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ZEND_OBJECTS_STORE_HANDLERS,
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NULL, /* read_property */
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NULL, /* write_property */
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NULL, /* read dimension */
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NULL, /* write_dimension */
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NULL, /* get_property_ptr_ptr */
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zend_object_proxy_get, /* get */
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zend_object_proxy_set, /* set */
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NULL, /* has_property */
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NULL, /* unset_property */
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NULL, /* has_dimension */
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NULL, /* unset_dimension */
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NULL, /* get_properties */
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NULL, /* get_method */
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NULL, /* call_method */
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NULL, /* get_constructor */
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NULL, /* get_class_entry */
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NULL, /* get_class_name */
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NULL, /* compare_objects */
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NULL, /* cast_object */
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NULL, /* count_elements */
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};
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* indent-tabs-mode: t
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* End:
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*/
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