stack unwinding

基本解释

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。
Since the compiler generates the code for stack unwinding for every C++ function, this requirement results in a larger executable and slower running code.
因为编译器将为每个 C++ 函数生成进行堆展开的代码，这种需求将导致更大的可执行文件、更慢的运行代码。
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。