Move literally everything out of src/or

This commit won't build yet -- it just puts everything in a slightly
more logical place.

The reasoning here is that "src/core" will hold the stuff that every (or
nearly every) tor instance will need in order to do onion routing.
Other features (including some necessary ones) will live in
"src/feature".  The "src/app" directory will hold the stuff needed
to have Tor be an application you can actually run.

This commit DOES NOT refactor the former contents of src/or into a
logical set of acyclic libraries, or change any code at all.  That
will have to come in the future.

We will continue to move things around and split them in the future,
but I hope this lays a reasonable groundwork for doing so.

1 files changed, 0 insertions, 172 deletions

diff --git a/src/or/periodic.c b/src/or/periodic.c
deleted file mode 100644
index 041b2d287b..0000000000
--- a/src/or/periodic.c
+++ /dev/null
@@ -1,172 +0,0 @@
-/* Copyright (c) 2015-2018, The Tor Project, Inc. */
-/* See LICENSE for licensing information */
-
-/**
- * \file periodic.c
- *
- * \brief Generic backend for handling periodic events.
- *
- * The events in this module are used by main.c to track items that need
- * to fire once every N seconds, possibly picking a new interval each time
- * that they fire.  See periodic_events[] in main.c for examples.
- */
-
-#include "or/or.h"
-#include "lib/evloop/compat_libevent.h"
-#include "or/config.h"
-#include "or/main.h"
-#include "or/periodic.h"
-#include "lib/evloop/compat_libevent.h"
-
-/** We disable any interval greater than this number of seconds, on the
- * grounds that it is probably an absolute time mistakenly passed in as a
- * relative time.
- */
-static const int MAX_INTERVAL = 10 * 365 * 86400;
-
-/** Set the event <b>event</b> to run in <b>next_interval</b> seconds from
- * now. */
-static void
-periodic_event_set_interval(periodic_event_item_t *event,
-                            time_t next_interval)
-{
-  tor_assert(next_interval < MAX_INTERVAL);
-  struct timeval tv;
-  tv.tv_sec = next_interval;
-  tv.tv_usec = 0;
-  mainloop_event_schedule(event->ev, &tv);
-}
-
-/** Wraps dispatches for periodic events, <b>data</b> will be a pointer to the
- * event that needs to be called */
-static void
-periodic_event_dispatch(mainloop_event_t *ev, void *data)
-{
-  periodic_event_item_t *event = data;
-  tor_assert(ev == event->ev);
-
-  if (BUG(!periodic_event_is_enabled(event))) {
-    return;
-  }
-
-  time_t now = time(NULL);
-  update_current_time(now);
-  const or_options_t *options = get_options();
-//  log_debug(LD_GENERAL, "Dispatching %s", event->name);
-  int r = event->fn(now, options);
-  int next_interval = 0;
-
-  if (!periodic_event_is_enabled(event)) {
-    /* The event got disabled from inside its callback; no need to
-     * reschedule. */
-    return;
-  }
-
-  /* update the last run time if action was taken */
-  if (r==0) {
-    log_err(LD_BUG, "Invalid return value for periodic event from %s.",
-                      event->name);
-    tor_assert(r != 0);
-  } else if (r > 0) {
-    event->last_action_time = now;
-    /* If the event is meant to happen after ten years, that's likely
-     * a bug, and somebody gave an absolute time rather than an interval.
-     */
-    tor_assert(r < MAX_INTERVAL);
-    next_interval = r;
-  } else {
-    /* no action was taken, it is likely a precondition failed,
-     * we should reschedule for next second incase the precondition
-     * passes then */
-    next_interval = 1;
-  }
-
-//  log_debug(LD_GENERAL, "Scheduling %s for %d seconds", event->name,
-//           next_interval);
-  struct timeval tv = { next_interval , 0 };
-  mainloop_event_schedule(ev, &tv);
-}
-
-/** Schedules <b>event</b> to run as soon as possible from now. */
-void
-periodic_event_reschedule(periodic_event_item_t *event)
-{
-  /* Don't reschedule a disabled event. */
-  if (periodic_event_is_enabled(event)) {
-    periodic_event_set_interval(event, 1);
-  }
-}
-
-/** Initializes the libevent backend for a periodic event. */
-void
-periodic_event_setup(periodic_event_item_t *event)
-{
-  if (event->ev) { /* Already setup? This is a bug */
-    log_err(LD_BUG, "Initial dispatch should only be done once.");
-    tor_assert(0);
-  }
-
-  event->ev = mainloop_event_new(periodic_event_dispatch,
-                                 event);
-  tor_assert(event->ev);
-}
-
-/** Handles initial dispatch for periodic events. It should happen 1 second
- * after the events are created to mimic behaviour before #3199's refactor */
-void
-periodic_event_launch(periodic_event_item_t *event)
-{
-  if (! event->ev) { /* Not setup? This is a bug */
-    log_err(LD_BUG, "periodic_event_launch without periodic_event_setup");
-    tor_assert(0);
-  }
-  /* Event already enabled? This is a bug */
-  if (periodic_event_is_enabled(event)) {
-    log_err(LD_BUG, "periodic_event_launch on an already enabled event");
-    tor_assert(0);
-  }
-
-  // Initial dispatch
-  event->enabled = 1;
-  periodic_event_dispatch(event->ev, event);
-}
-
-/** Release all storage associated with <b>event</b> */
-void
-periodic_event_destroy(periodic_event_item_t *event)
-{
-  if (!event)
-    return;
-  mainloop_event_free(event->ev);
-  event->last_action_time = 0;
-}
-
-/** Enable the given event which means the event is launched and then the
- * event's enabled flag is set. This can be called for an event that is
- * already enabled. */
-void
-periodic_event_enable(periodic_event_item_t *event)
-{
-  tor_assert(event);
-  /* Safely and silently ignore if this event is already enabled. */
-  if (periodic_event_is_enabled(event)) {
-    return;
-  }
-
-  periodic_event_launch(event);
-}
-
-/** Disable the given event which means the event is destroyed and then the
- * event's enabled flag is unset. This can be called for an event that is
- * already disabled. */
-void
-periodic_event_disable(periodic_event_item_t *event)
-{
-  tor_assert(event);
-  /* Safely and silently ignore if this event is already disabled. */
-  if (!periodic_event_is_enabled(event)) {
-    return;
-  }
-  mainloop_event_cancel(event->ev);
-  event->enabled = 0;
-}