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add comments.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35965 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2012-06-08 13:50:38 +00:00
parent 373a7d1a95
commit ba1c1786d6

View file

@ -2788,10 +2788,16 @@ rb_fork_err(int *status, int (*chfunc)(void*, char *, size_t), void *charg, VALU
continue;
}
else {
/* rb_protect() is required not only for non-NULL status
* but also for non-NULL chfunc because
* ep[0] and ep[1] should be closed on exceptions.
* If status is NULL, the catched exception is re-raised
* by rb_jump_tag() below, after closing them. */
rb_protect((VALUE (*)())rb_thread_sleep, 1, &state);
if (status) *status = state;
if (!state) continue;
}
/* fall through */
default:
#ifdef FD_CLOEXEC
if (chfunc) {