This provides a second option within malloc for satisfying a memory request.

这在malloc中为满足一个内存请求提供了第二种选择。

youdao

If there is enough space in the heap to satisfy a memory request, it can be handled by the language runtime without kernel involvement.

当堆的空间能够满足程序的内存请求时，那么请求的处理过程就可以直接由语言运行时来负责，而不必有系统内核参与。

youdao

If there is enough space in the heap to satisfy a memory request, it can be handled by the language runtime without kernel involvement.

如果堆中有足够空间来满足内存申请，就可以通过语言运行时库来处理请求，不需要内核介入。

youdao

Beyond the ranking component, we compute a larger set of ranked items on your first request and subsequent paging request are substantially faster, while keeping a low memory footprint.

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