}
+static int
+need_tick (void)
+{
+#ifdef HAVE_W32_SYSTEM
+ /* We do not know how to interrupt the select loop on Windows, so we
+ always need a short tick there. */
+ return 1;
+#else
+ /* if we were invoked like "gpg-agent cmd arg1 arg2" then we need to
+ watch our parent. */
+ if (parent_pid != (pid_t)(-1))
+ return 1;
+ /* if scdaemon is running, we need to check that it's alive */
+ if (agent_scd_check_running ())
+ return 1;
+ /* otherwise, nothing fine-grained to do. */
+ return 0;
+#endif /*HAVE_W32_SYSTEM*/
+}
+
/* This is the worker for the ticker. It is called every few seconds
and may only do fast operations. */
#ifndef HAVE_W32_SYSTEM
/* The signal handler for this program. It is expected to be run in
- its own trhead and not in the context of a signal handler. */
+ its own thread and not in the context of a signal handler. */
static void
handle_signal (int signo)
{
thus a simple assignment is fine to copy the entire set. */
read_fdset = fdset;
+ /* avoid a fine-grained timer if we don't need one: */
+ timertbl[0].interval.tv_sec = need_tick () ? TIMERTICK_INTERVAL : 0;
+ /* avoid waking up to check sockets if we can count on inotify */
+ timertbl[1].interval.tv_sec = (my_inotify_fd == -1) ? CHECK_OWN_SOCKET_INTERVAL : 0;
+
/* loop through all timers, fire any registered functions, and
plan next timer to trigger */
npth_clock_gettime (&curtime);