stack unwinding

From a control-flow perspective, an event is a function call, whereas an exception is a long jump across the stack, with unwinding semantics to destroy lost objects.

从控制流的角度看，事件是一次函数调用，而异常则是堆栈的突然跳跃，用展开的语义销毁丢失的对象。

during stack unwinding, the memory used by local objects is freed and destructors for local objects of class type are run.

栈展开期间，释放局部对象所用的内存并运行类类型局部对象的析构函数。

i find it convenient to focus on language features rather than on the gruesome details of vtable layout, or stack unwinding (for example).

我觉得我能够将注意力集中在语言特性本身，而不是vtable布局或者栈展开之类的可怕细节，这让我感觉很好。

destructors are often executed during stack unwinding .

栈展开期间会经常执行析构函数。

You should avoid exceptions because the stack-unwinding mechanism is very expensive.

你应该避免异常,因为堆栈展开机制是非常昂贵的.

i find it convenient to focus on language features rather than on the gruesome details of vtable layout, or stack unwinding ( for example).

我觉得我能够将注意力集中在语言特性本身，而不是vtable布局或者栈展开之类的可怕细节，这让我感觉很好。