tree 59751aaee7a5596494254f542cd8890135f44474
parent 04a74b6cfa5ef4870263f84ac94a488d9f2ef14a
author Jeff King <peff@peff.net> 1366141582 -0400
committer Junio C Hamano <gitster@pobox.com> 1366149766 -0700

usage: allow pluggable die-recursion checks

When any git code calls die or die_errno, we use a counter
to detect recursion into the die functions from any of the
helper functions. However, such a simple counter is not good
enough for threaded programs, which may call die from a
sub-thread, killing only the sub-thread (but incrementing
the counter for everyone).

Rather than try to deal with threads ourselves here, let's
just allow callers to plug in their own recursion-detection
function. This is similar to how we handle the die routine
(the caller plugs in a die routine which may kill only the
sub-thread).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>