src,lib: make ^C print a JS stack trace

If terminating the process with ctrl-c / SIGINT, prints a JS stacktrace
leading up to the currently executing code.

The feature would be enabled under option `--trace-sigint`.

Conditions of no stacktrace on sigint:

- has (an) active sigint listener(s);
- main thread is idle (i.e. uv polling), a message instead of stacktrace
  would be printed.

PR-URL: https://github.com/nodejs/node/pull/29207
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Christopher Hiller <boneskull@boneskull.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/async_wrap.h b/src/async_wrap.h
index dd82497a259..86acf54cd68 100644
--- a/src/async_wrap.h
+++ b/src/async_wrap.h
@@ -68,6 +68,7 @@ namespace node {
   V(TTYWRAP)                                                                  \
   V(UDPSENDWRAP)                                                              \
   V(UDPWRAP)                                                                  \
+  V(SIGINTWATCHDOG)                                                           \
   V(WORKER)                                                                   \
   V(WRITEWRAP)                                                                \
   V(ZLIB)