在 2020年3月23日 +0800 AM2:13，Stefan Monnier <address@hidden>，写道：
I want to do flow control, because too many data may cause UI
unresponsive. Set the recv buffer size to 4, and if I don’t fetch the four
bytes, please don’t receive more data. If the size (In the four bytes
header) is too big, ask the user if the message should be received.
I think I understand your description, and I think I understand somewhat
how Emacs's code works in this respect, but I really don't see how the
two relate.
Presumably you're writing Elisp code using Emacs's process filters.
What is the concrete problem you're seeing that you're trying to solve
(your description seems to focus on *how* to solve your problem)?
Does Emacs take too long to react to some events? Does its memory use
grow unreasonably? Is the rest of the system affected?
Stefan
If too many data arrives, emacs may be unresponsive. I want to block the data sender(subprocess) sometimes to keep good responsiveness.