[jsc-dev] Signal handler API

Yusuke SUZUKI utatane.tea at gmail.com
Sat Apr 22 07:10:11 PDT 2017

Hi :)

On Thu, Apr 20, 2017 at 2:00 AM, Keith Miller <keith_miller at apple.com>

> Hi all,
> We have been using signals for more and more features inside JSC. At this
> point, the gains we could get from using signals everywhere are probably
> worth the potential downsides. The main potential issue is breaking
> compatibility with API users. This isn’t likely to be a major issue,
> however, and we can initialize our handlers lazily, which should prevent
> most backwards compatibility breakages.

I would like to note that SIGUSR1 (previously SIGUSR2) is already used in
pthread ports (except for Darwin) to suspend and resume threads.

> I opened a bug on this: https://bugs.webkit.org/show_bug.cgi?id=170976.
> The bug has a proposed bare-bones API for commentary.
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