C++ (Cpp) initialize_periodic_events Examples

Example #1

File: test.c Project: ageis/tor

static void
test_circuit_timeout(void *arg)
{
  /* Plan:
   *  1. Generate 1000 samples
   *  2. Estimate parameters
   *  3. If difference, repeat
   *  4. Save state
   *  5. load state
   *  6. Estimate parameters
   *  7. compare differences
   */
  circuit_build_times_t initial;
  circuit_build_times_t estimate;
  circuit_build_times_t final;
  double timeout1, timeout2;
  or_state_t *state=NULL;
  int i, runs;
  double close_ms;
  (void)arg;

  initialize_periodic_events();

  circuit_build_times_init(&initial);
  circuit_build_times_init(&estimate);
  circuit_build_times_init(&final);

  state = or_state_new();

  circuitbuild_running_unit_tests();
#define timeout0 (build_time_t)(30*1000.0)
  initial.Xm = 3000;
  circuit_build_times_initial_alpha(&initial,
                                    CBT_DEFAULT_QUANTILE_CUTOFF/100.0,
                                    timeout0);
  close_ms = MAX(circuit_build_times_calculate_timeout(&initial,
                             CBT_DEFAULT_CLOSE_QUANTILE/100.0),
                 CBT_DEFAULT_TIMEOUT_INITIAL_VALUE);
  do {
    for (i=0; i < CBT_DEFAULT_MIN_CIRCUITS_TO_OBSERVE; i++) {
      build_time_t sample = circuit_build_times_generate_sample(&initial,0,1);

      if (sample > close_ms) {
        circuit_build_times_add_time(&estimate, CBT_BUILD_ABANDONED);
      } else {
        circuit_build_times_add_time(&estimate, sample);
      }
    }
    circuit_build_times_update_alpha(&estimate);
    timeout1 = circuit_build_times_calculate_timeout(&estimate,
                                  CBT_DEFAULT_QUANTILE_CUTOFF/100.0);
    circuit_build_times_set_timeout(&estimate);
    log_notice(LD_CIRC, "Timeout1 is %f, Xm is %d", timeout1, estimate.Xm);
           /* 2% error */
  } while (fabs(circuit_build_times_cdf(&initial, timeout0) -
                circuit_build_times_cdf(&initial, timeout1)) > 0.02);

  tt_int_op(estimate.total_build_times, OP_LE, CBT_NCIRCUITS_TO_OBSERVE);

  circuit_build_times_update_state(&estimate, state);
  circuit_build_times_free_timeouts(&final);
  tt_int_op(circuit_build_times_parse_state(&final, state), OP_EQ, 0);

  circuit_build_times_update_alpha(&final);
  timeout2 = circuit_build_times_calculate_timeout(&final,
                                 CBT_DEFAULT_QUANTILE_CUTOFF/100.0);

  circuit_build_times_set_timeout(&final);
  log_notice(LD_CIRC, "Timeout2 is %f, Xm is %d", timeout2, final.Xm);

  /* 5% here because some accuracy is lost due to histogram conversion */
  tt_assert(fabs(circuit_build_times_cdf(&initial, timeout0) -
                   circuit_build_times_cdf(&initial, timeout2)) < 0.05);

  for (runs = 0; runs < 50; runs++) {
    int build_times_idx = 0;
    int total_build_times = 0;

    final.close_ms = final.timeout_ms = CBT_DEFAULT_TIMEOUT_INITIAL_VALUE;
    estimate.close_ms = estimate.timeout_ms
                      = CBT_DEFAULT_TIMEOUT_INITIAL_VALUE;

    for (i = 0; i < CBT_DEFAULT_RECENT_CIRCUITS*2; i++) {
      circuit_build_times_network_circ_success(&estimate);
      circuit_build_times_add_time(&estimate,
            circuit_build_times_generate_sample(&estimate, 0,
                CBT_DEFAULT_QUANTILE_CUTOFF/100.0));

      circuit_build_times_network_circ_success(&estimate);
      circuit_build_times_add_time(&final,
            circuit_build_times_generate_sample(&final, 0,
                CBT_DEFAULT_QUANTILE_CUTOFF/100.0));
    }

    tt_assert(!circuit_build_times_network_check_changed(&estimate));
    tt_assert(!circuit_build_times_network_check_changed(&final));

    /* Reset liveness to be non-live */
    final.liveness.network_last_live = 0;

Example #2

File: mainloop_sys.c Project: jfrazelle/tor

static int
subsys_mainloop_initialize(void)
{
  initialize_periodic_events();
  return 0;
}