You never have to worry about double-freeing memory or object lifetimes.
您永远不必担心内存的双重释放或者对象的生命周期。
As you can see, in this allocator, freeing memory is done in constant time, using a very simple mechanism.
如您所见，在这个分配程序中，内存的释放使用了一个非常简单的机制，在固定时间内完成内存释放。
In addition, the kernel has a built-in last-ditch system for freeing memory when no more is available; it'll find a process that's hogging VM resources and kill it.
另外，内核有一个内建的最终防线系统，用来在没有可用内存的时候释放内存，它会找到占用VM资源的进程并终止该进程。
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