php扩展资源类

int le_conn; //资源表示定义成全局，在模块初始化阶段，zend会给每个资源分配唯一的id

zend_class_entry *spread_class_entry; //全局定义类

static zend_function_entry spread_class_functions[] = { //类方法可以直接映射到函数，这样既可以直接访问函数也可以面向对象，mysqli应该就是这种方式

ZEND_MALIAS(Spread, __construct, spread_constructor, arginfo_spread___construct,  ZEND_ACC_PUBLIC)

PHP_ME_MAPPING(connect,         spread_connect,         arginfo_spread_oop_connect,  0)

PHP_ME_MAPPING(disconnect,      spread_disconnect,      arginfo_spread_oop_disconnect,  0)

PHP_ME_MAPPING(join,            spread_join,            arginfo_spread_oop_join,  0)

PHP_ME_MAPPING(leave,           spread_leave,           arginfo_spread_oop_join,  0)

PHP_ME_MAPPING(receive,         spread_receive,         arginfo_spread_oop_receive,  0)

PHP_ME_MAPPING(multicast,       spread_multicast,       arginfo_spread_oop_multicast,  0)

PHP_FE_END

};

//定义宏为类添加常量

#define REGISTER_SPREAD_CLASS_CONST_LONG(const_name, value) \

zend_declare_class_constant_long(spread_class_entry, const_name, sizeof(const_name)-1, (long)value TSRMLS_CC);

PHP_MINIT_FUNCTION(spread) //模块初始化中定义类

{

      zend_class_entry spread_ce;

     memcpy(&spread_object_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers));

     spread_object_handlers.clone_obj      = NULL;

     INIT_CLASS_ENTRY(spread_ce, "Spread", spread_class_functions);

    spread_ce.create_object = spread_object_new;

    spread_class_entry = zend_register_internal_class(&spread_ce TSRMLS_CC);

  //定义资源

    le_conn = zend_register_list_destructors_ex(php_spread_rsr_dtor, NULL, "spread", module_number);

}

ZEND_REGISTER_RESOURCE(return_value, mbox, le_conn); //注册资源，通过le_conn关联定义的资源，mbox为资源变量，资源析构函数php_spread_rsr_dtor参数zend_rsrc_list_entry *rsrc的ptr指针指向mbox。

//更新类属性

zend_update_property_stringl(spread_class_entry, this, "daemon", sizeof("daemon") - 1, spread_name, spread_name_len TSRMLS_CC);

//直接定义类方法

PHP_METHOD(Spread, spread_constructor)

{

zval *object = getThis(); //获取当前类对象

zval *groups_array;

      //添加属性

add_property_bool(object, "connected", 0);

add_property_null(object, "daemon");

add_property_null(object, "private_name");

add_property_null(object, "private_group");

MAKE_STD_ZVAL(groups_array); 

array_init(groups_array);

add_property_zval(object, "joined_groups", groups_array);

/* add_prop_zval increments the refcount, useless here */

zval_ptr_dtor(&groups_array);

}

retval.handle = zend_objects_store_put(intern, NULL, (zend_objects_free_object_storage_t) spread_object_free_storage, NULL TSRMLS_CC); //将资源放入资源池，返回索引

(ze_spread_object *) zend_object_store_get_object(object TSRMLS_CC); //获取对象池中bucket中的对象，传入值为对象