yr.cpp_instance_class.__init__

cpp_instance_class.__init__(class_name: str, factory_name: str, function_urn: str)

初始化。

参数：

• class_name (str) – cpp 类名。

• factory_name (str) – cpp 类静态构造函数名。

• function_urn (str, optional) – 函数 urn，默认为 sn:cn:yrk:default:function:0-defaultservice-cpp:$latest。

样例：

#include <iostream>
#include "yr/yr.h"

    class Counter {
        public:

            int count;
            Counter() {}
            Counter(int init) { count = init; }

            static Counter* FactoryCreate(int init) {
                std::cout << "Counter FactoryCreate with init=" << init << std::endl;
                return new Counter(init);
            }

            int Add(int x) {
                count += x;
                std::cout << "Counter Add with init=" << count << std::endl;
                return count;
            }

            YR_STATE(count);
    };

    YR_INVOKE(Counter::FactoryCreate, &Counter::Add);

>>> import yr
>>> yr.init()
>>> cpp_function_urn = (
...     "sn:cn:yrk:default:"
...     "function:0-yr-defaultservice-cpp:$latest"
... )
>>> counter_class = yr.cpp_instance_class("Counter", "Counter::FactoryCreate", cpp_function_urn)
>>> opt = yr.InvokeOptions(cpu=1000, memory=1024)
>>> ins = counter_class.options(opt).invoke(11)
>>> result = ins.Add.invoke(9)
>>> yr.get(result)
>>> ins.terminate()
>>> yr.finalize()