+static void
+siginit (EV_P)
+{
+#ifndef WIN32
+ fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
+ fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
+
+ /* rather than sort out wether we really need nb, set it */
+ fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
+ fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
+#endif
+
+ ev_io_set (&sigev, sigpipe [0], EV_READ);
+ ev_io_start (EV_A_ &sigev);
+ ev_unref (EV_A); /* child watcher should not keep loop alive */
+}
+
+/*****************************************************************************/
+
+#ifndef WIN32
+
+#ifndef WCONTINUED
+# define WCONTINUED 0
+#endif
+
+static void
+child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
+{
+ struct ev_child *w;
+
+ for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
+ if (w->pid == pid || !w->pid)
+ {
+ w->priority = sw->priority; /* need to do it *now* */
+ w->rpid = pid;
+ w->rstatus = status;
+ event (EV_A_ (W)w, EV_CHILD);
+ }
+}
+
+static void
+childcb (EV_P_ struct ev_signal *sw, int revents)
+{
+ int pid, status;
+
+ if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
+ {
+ /* make sure we are called again until all childs have been reaped */
+ event (EV_A_ (W)sw, EV_SIGNAL);
+
+ child_reap (EV_A_ sw, pid, pid, status);
+ child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
+ }
+}
+
+#endif
+
+/*****************************************************************************/
+
+#if EV_USE_KQUEUE
+# include "ev_kqueue.c"
+#endif
+#if EV_USE_EPOLL