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Merge branch 'bug6153_squashed'

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This commit is contained in:
Nick Mathewson 2013-08-22 10:16:07 -04:00
commit eb79dd42e7
14 changed files with 187 additions and 101 deletions
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4
changes/6153_circuittime_accessor Normal file
View File

@ -0,0 +1,4 @@
o Code simplification and refactoring:
- Add a set of accessor functions for the circuit timeout data
structure. Fixes ticket 6153; patch from "piet".

2
src/or/channel.c
View File

@ -2361,7 +2361,7 @@ channel_do_open_actions(channel_t *chan)
started_here = channel_is_outgoing(chan);
if (started_here) {
circuit_build_times_network_is_live(&circ_times);
circuit_build_times_network_is_live(get_circuit_build_times_mutable());
rep_hist_note_connect_succeeded(chan->identity_digest, now);
if (entry_guard_register_connect_status(
chan->identity_digest, 1, 0, now) < 0) {

28
src/or/circuitbuild.c
View File

@ -772,20 +772,24 @@ circuit_send_next_onion_skin(origin_circuit_t *circ)
* it off at, we probably had a suspend event along this codepath,
* and we should discard the value.
*/
if (timediff < 0 || timediff > 2*circ_times.close_ms+1000) {
if (timediff < 0 ||
timediff > 2*get_circuit_build_close_time_ms()+1000) {
log_notice(LD_CIRC, "Strange value for circuit build time: %ldmsec. "
"Assuming clock jump. Purpose %d (%s)", timediff,
circ->base_.purpose,
circuit_purpose_to_string(circ->base_.purpose));
} else if (!circuit_build_times_disabled()) {
/* Only count circuit times if the network is live */
if (circuit_build_times_network_check_live(&circ_times)) {
circuit_build_times_add_time(&circ_times, (build_time_t)timediff);
circuit_build_times_set_timeout(&circ_times);
if (circuit_build_times_network_check_live(
get_circuit_build_times())) {
circuit_build_times_add_time(get_circuit_build_times_mutable(),
(build_time_t)timediff);
circuit_build_times_set_timeout(get_circuit_build_times_mutable());
}
if (circ->base_.purpose != CIRCUIT_PURPOSE_C_MEASURE_TIMEOUT) {
circuit_build_times_network_circ_success(&circ_times);
circuit_build_times_network_circ_success(
get_circuit_build_times_mutable());
}
}
}
@ -2273,7 +2277,7 @@ pathbias_measure_use_rate(entry_guard_t *guard)
tor_lround(guard->unusable_circuits),
tor_lround(guard->collapsed_circuits),
tor_lround(guard->timeouts),
tor_lround(circ_times.close_ms/1000));
tor_lround(get_circuit_build_close_time_ms()/1000));
guard->path_bias_disabled = 1;
guard->bad_since = approx_time();
entry_guards_changed();
@ -2299,7 +2303,7 @@ pathbias_measure_use_rate(entry_guard_t *guard)
tor_lround(guard->unusable_circuits),
tor_lround(guard->collapsed_circuits),
tor_lround(guard->timeouts),
tor_lround(circ_times.close_ms/1000));
tor_lround(get_circuit_build_close_time_ms()/1000));
}
} else if (pathbias_get_use_success_count(guard)/guard->use_attempts
< pathbias_get_notice_use_rate(options)) {
@ -2323,7 +2327,7 @@ pathbias_measure_use_rate(entry_guard_t *guard)
tor_lround(guard->unusable_circuits),
tor_lround(guard->collapsed_circuits),
tor_lround(guard->timeouts),
tor_lround(circ_times.close_ms/1000));
tor_lround(get_circuit_build_close_time_ms()/1000));
}
}
}
@ -2379,7 +2383,7 @@ pathbias_measure_close_rate(entry_guard_t *guard)
tor_lround(guard->unusable_circuits),
tor_lround(guard->collapsed_circuits),
tor_lround(guard->timeouts),
tor_lround(circ_times.close_ms/1000));
tor_lround(get_circuit_build_close_time_ms()/1000));
guard->path_bias_disabled = 1;
guard->bad_since = approx_time();
entry_guards_changed();
@ -2405,7 +2409,7 @@ pathbias_measure_close_rate(entry_guard_t *guard)
tor_lround(guard->unusable_circuits),
tor_lround(guard->collapsed_circuits),
tor_lround(guard->timeouts),
tor_lround(circ_times.close_ms/1000));
tor_lround(get_circuit_build_close_time_ms()/1000));
}
} else if (pathbias_get_close_success_count(guard)/guard->circ_attempts
< pathbias_get_warn_rate(options)) {
@ -2430,7 +2434,7 @@ pathbias_measure_close_rate(entry_guard_t *guard)
tor_lround(guard->unusable_circuits),
tor_lround(guard->collapsed_circuits),
tor_lround(guard->timeouts),
tor_lround(circ_times.close_ms/1000));
tor_lround(get_circuit_build_close_time_ms()/1000));
}
} else if (pathbias_get_close_success_count(guard)/guard->circ_attempts
< pathbias_get_notice_rate(options)) {
@ -2453,7 +2457,7 @@ pathbias_measure_close_rate(entry_guard_t *guard)
tor_lround(guard->unusable_circuits),
tor_lround(guard->collapsed_circuits),
tor_lround(guard->timeouts),
tor_lround(circ_times.close_ms/1000));
tor_lround(get_circuit_build_close_time_ms()/1000));
}
}
}

2
src/or/circuitlist.c
View File

@ -678,7 +678,7 @@ origin_circuit_new(void)
init_circuit_base(TO_CIRCUIT(circ));
circ_times.last_circ_at = approx_time();
circuit_build_times_update_last_circ(get_circuit_build_times_mutable());
return circ;
}

99
src/or/circuitstats.c
View File

@ -18,6 +18,10 @@
#undef log
#include <math.h>
static void cbt_control_event_buildtimeout_set(
const circuit_build_times_t *cbt,
buildtimeout_set_event_t type);
#define CBT_BIN_TO_MS(bin) ((bin)*CBT_BIN_WIDTH + (CBT_BIN_WIDTH/2))
/** Global list of circuit build times */
@ -26,8 +30,7 @@
// vary in their own latency. The downside of this is that guards
// can change frequently, so we'd be building a lot more circuits
// most likely.
/* XXXX024 Make this static; add accessor functions. */
circuit_build_times_t circ_times;
static circuit_build_times_t circ_times;
#ifdef TOR_UNIT_TESTS
/** If set, we're running the unit tests: we should avoid clobbering
@ -37,6 +40,37 @@ static int unit_tests = 0;
#define unit_tests 0
#endif
/** Return a pointer to the data structure describing our current circuit
* build time history and computations. */
const circuit_build_times_t *
get_circuit_build_times(void)
{
return &circ_times;
}
/** As get_circuit_build_times, but return a mutable pointer. */
circuit_build_times_t *
get_circuit_build_times_mutable(void)
{
return &circ_times;
}
/** Return the time to wait before actually closing an under-construction, in
* milliseconds. */
double
get_circuit_build_close_time_ms(void)
{
return circ_times.close_ms;
}
/** Return the time to wait before giving up on an under-construction circuit,
* in milliseconds. */
double
get_circuit_build_timeout_ms(void)
{
return circ_times.timeout_ms;
}
/**
* This function decides if CBT learning should be disabled. It returns
* true if one or more of the following four conditions are met:
@ -158,7 +192,7 @@ circuit_build_times_min_circs_to_observe(void)
/** Return true iff <b>cbt</b> has recorded enough build times that we
* want to start acting on the timeout it implies. */
int
circuit_build_times_enough_to_compute(circuit_build_times_t *cbt)
circuit_build_times_enough_to_compute(const circuit_build_times_t *cbt)
{
return cbt->total_build_times >= circuit_build_times_min_circs_to_observe();
}
@ -475,7 +509,7 @@ circuit_build_times_init(circuit_build_times_t *cbt)
cbt->liveness.timeouts_after_firsthop = NULL;
}
cbt->close_ms = cbt->timeout_ms = circuit_build_times_get_initial_timeout();
control_event_buildtimeout_set(cbt, BUILDTIMEOUT_SET_EVENT_RESET);
cbt_control_event_buildtimeout_set(cbt, BUILDTIMEOUT_SET_EVENT_RESET);
}
/**
@ -561,7 +595,7 @@ circuit_build_times_add_time(circuit_build_times_t *cbt, build_time_t time)
* Return maximum circuit build time
*/
static build_time_t
circuit_build_times_max(circuit_build_times_t *cbt)
circuit_build_times_max(const circuit_build_times_t *cbt)
{
int i = 0;
build_time_t max_build_time = 0;
@ -602,7 +636,7 @@ circuit_build_times_min(circuit_build_times_t *cbt)
* The return value must be freed by the caller.
*/
static uint32_t *
circuit_build_times_create_histogram(circuit_build_times_t *cbt,
circuit_build_times_create_histogram(const circuit_build_times_t *cbt,
build_time_t *nbins)
{
uint32_t *histogram;
@ -692,7 +726,7 @@ circuit_build_times_get_xm(circuit_build_times_t *cbt)
* the or_state_t state structure.
*/
void
circuit_build_times_update_state(circuit_build_times_t *cbt,
circuit_build_times_update_state(const circuit_build_times_t *cbt,
or_state_t *state)
{
uint32_t *histogram;
@ -1129,7 +1163,7 @@ circuit_build_times_initial_alpha(circuit_build_times_t *cbt,
* Returns true if we need circuits to be built
*/
int
circuit_build_times_needs_circuits(circuit_build_times_t *cbt)
circuit_build_times_needs_circuits(const circuit_build_times_t *cbt)
{
/* Return true if < MIN_CIRCUITS_TO_OBSERVE */
return !circuit_build_times_enough_to_compute(cbt);
@ -1140,7 +1174,7 @@ circuit_build_times_needs_circuits(circuit_build_times_t *cbt)
* right now.
*/
int
circuit_build_times_needs_circuits_now(circuit_build_times_t *cbt)
circuit_build_times_needs_circuits_now(const circuit_build_times_t *cbt)
{
return circuit_build_times_needs_circuits(cbt) &&
approx_time()-cbt->last_circ_at > circuit_build_times_test_frequency();
@ -1273,7 +1307,7 @@ circuit_build_times_network_close(circuit_build_times_t *cbt,
* in the case of recent liveness changes.
*/
int
circuit_build_times_network_check_live(circuit_build_times_t *cbt)
circuit_build_times_network_check_live(const circuit_build_times_t *cbt)
{
if (cbt->liveness.nonlive_timeouts > 0) {
return 0;
@ -1339,7 +1373,7 @@ circuit_build_times_network_check_changed(circuit_build_times_t *cbt)
= circuit_build_times_get_initial_timeout();
}
control_event_buildtimeout_set(cbt, BUILDTIMEOUT_SET_EVENT_RESET);
cbt_control_event_buildtimeout_set(cbt, BUILDTIMEOUT_SET_EVENT_RESET);
log_notice(LD_CIRC,
"Your network connection speed appears to have changed. Resetting "
@ -1521,7 +1555,7 @@ circuit_build_times_set_timeout(circuit_build_times_t *cbt)
}
}
control_event_buildtimeout_set(cbt, BUILDTIMEOUT_SET_EVENT_COMPUTED);
cbt_control_event_buildtimeout_set(cbt, BUILDTIMEOUT_SET_EVENT_COMPUTED);
timeout_rate = circuit_build_times_timeout_rate(cbt);
@ -1567,3 +1601,44 @@ circuitbuild_running_unit_tests(void)
}
#endif
void
circuit_build_times_update_last_circ(circuit_build_times_t *cbt)
{
cbt->last_circ_at = approx_time();
}
static void
cbt_control_event_buildtimeout_set(const circuit_build_times_t *cbt,
buildtimeout_set_event_t type)
{
char *args = NULL;
double qnt;
switch(type) {
case BUILDTIMEOUT_SET_EVENT_RESET:
case BUILDTIMEOUT_SET_EVENT_SUSPENDED:
case BUILDTIMEOUT_SET_EVENT_DISCARD:
qnt = 1.0;
break;
case BUILDTIMEOUT_SET_EVENT_COMPUTED:
case BUILDTIMEOUT_SET_EVENT_RESUME:
default:
qnt = circuit_build_times_quantile_cutoff();
break;
}
tor_asprintf(&args, "TOTAL_TIMES=%lu "
"TIMEOUT_MS=%lu XM=%lu ALPHA=%f CUTOFF_QUANTILE=%f "
"TIMEOUT_RATE=%f CLOSE_MS=%lu CLOSE_RATE=%f",
(unsigned long)cbt->total_build_times,
(unsigned long)cbt->timeout_ms,
(unsigned long)cbt->Xm, cbt->alpha, qnt,
circuit_build_times_timeout_rate(cbt),
(unsigned long)cbt->close_ms,
circuit_build_times_close_rate(cbt));
control_event_buildtimeout_set(type, args);
tor_free(args);
}

44
src/or/circuitstats.h
View File

@ -12,11 +12,14 @@
#ifndef TOR_CIRCUITSTATS_H
#define TOR_CIRCUITSTATS_H
extern circuit_build_times_t circ_times;
const circuit_build_times_t *get_circuit_build_times(void);
circuit_build_times_t *get_circuit_build_times_mutable(void);
double get_circuit_build_close_time_ms(void);
double get_circuit_build_timeout_ms(void);
int circuit_build_times_disabled(void);
int circuit_build_times_enough_to_compute(circuit_build_times_t *cbt);
void circuit_build_times_update_state(circuit_build_times_t *cbt,
int circuit_build_times_enough_to_compute(const circuit_build_times_t *cbt);
void circuit_build_times_update_state(const circuit_build_times_t *cbt,
or_state_t *state);
int circuit_build_times_parse_state(circuit_build_times_t *cbt,
or_state_t *state);
@ -27,9 +30,9 @@ int circuit_build_times_count_close(circuit_build_times_t *cbt,
void circuit_build_times_set_timeout(circuit_build_times_t *cbt);
int circuit_build_times_add_time(circuit_build_times_t *cbt,
build_time_t time);
int circuit_build_times_needs_circuits(circuit_build_times_t *cbt);
int circuit_build_times_needs_circuits(const circuit_build_times_t *cbt);
int circuit_build_times_needs_circuits_now(circuit_build_times_t *cbt);
int circuit_build_times_needs_circuits_now(const circuit_build_times_t *cbt);
void circuit_build_times_init(circuit_build_times_t *cbt);
void circuit_build_times_free_timeouts(circuit_build_times_t *cbt);
void circuit_build_times_new_consensus_params(circuit_build_times_t *cbt,
@ -37,6 +40,8 @@ void circuit_build_times_new_consensus_params(circuit_build_times_t *cbt,
double circuit_build_times_timeout_rate(const circuit_build_times_t *cbt);
double circuit_build_times_close_rate(const circuit_build_times_t *cbt);
void circuit_build_times_update_last_circ(circuit_build_times_t *cbt);
#ifdef CIRCUITSTATS_PRIVATE
STATIC double circuit_build_times_calculate_timeout(circuit_build_times_t *cbt,
double quantile);
@ -59,8 +64,35 @@ void circuitbuild_running_unit_tests(void);
/* Network liveness functions */
void circuit_build_times_network_is_live(circuit_build_times_t *cbt);
int circuit_build_times_network_check_live(circuit_build_times_t *cbt);
int circuit_build_times_network_check_live(const circuit_build_times_t *cbt);
void circuit_build_times_network_circ_success(circuit_build_times_t *cbt);
#ifdef CIRCUITSTATS_PRIVATE
/** Structure for circuit build times history */
struct circuit_build_times_s{
/** The circular array of recorded build times in milliseconds */
build_time_t circuit_build_times[CBT_NCIRCUITS_TO_OBSERVE];
/** Current index in the circuit_build_times circular array */
int build_times_idx;
/** Total number of build times accumulated. Max CBT_NCIRCUITS_TO_OBSERVE */
int total_build_times;
/** Information about the state of our local network connection */
network_liveness_t liveness;
/** Last time we built a circuit. Used to decide to build new test circs */
time_t last_circ_at;
/** "Minimum" value of our pareto distribution (actually mode) */
build_time_t Xm;
/** alpha exponent for pareto dist. */
double alpha;
/** Have we computed a timeout? */
int have_computed_timeout;
/** The exact value for that timeout in milliseconds. Stored as a double
* to maintain precision from calculations to and from quantile value. */
double timeout_ms;
/** How long we wait before actually closing the circuit. */
double close_ms;
};
#endif
#endif

41
src/or/circuituse.c
View File

@ -442,12 +442,12 @@ circuit_expire_building(void)
* RTTs = 4a + 3b + 2c
* RTTs = 9h
*/
SET_CUTOFF(general_cutoff, circ_times.timeout_ms);
SET_CUTOFF(begindir_cutoff, circ_times.timeout_ms);
SET_CUTOFF(general_cutoff, get_circuit_build_timeout_ms());
SET_CUTOFF(begindir_cutoff, get_circuit_build_timeout_ms());
/* > 3hop circs seem to have a 1.0 second delay on their cannibalized
* 4th hop. */
SET_CUTOFF(fourhop_cutoff, circ_times.timeout_ms * (10/6.0) + 1000);
SET_CUTOFF(fourhop_cutoff, get_circuit_build_timeout_ms() * (10/6.0) + 1000);
/* CIRCUIT_PURPOSE_C_ESTABLISH_REND behaves more like a RELAY cell.
* Use the stream cutoff (more or less). */
@ -456,20 +456,20 @@ circuit_expire_building(void)
/* Be lenient with cannibalized circs. They already survived the official
* CBT, and they're usually not performance-critical. */
SET_CUTOFF(cannibalized_cutoff,
MAX(circ_times.close_ms*(4/6.0),
MAX(get_circuit_build_close_time_ms()*(4/6.0),
options->CircuitStreamTimeout * 1000) + 1000);
/* Intro circs have an extra round trip (and are also 4 hops long) */
SET_CUTOFF(c_intro_cutoff, circ_times.timeout_ms * (14/6.0) + 1000);
SET_CUTOFF(c_intro_cutoff, get_circuit_build_timeout_ms() * (14/6.0) + 1000);
/* Server intro circs have an extra round trip */
SET_CUTOFF(s_intro_cutoff, circ_times.timeout_ms * (9/6.0) + 1000);
SET_CUTOFF(s_intro_cutoff, get_circuit_build_timeout_ms() * (9/6.0) + 1000);
SET_CUTOFF(close_cutoff, circ_times.close_ms);
SET_CUTOFF(extremely_old_cutoff, circ_times.close_ms*2 + 1000);
SET_CUTOFF(close_cutoff, get_circuit_build_close_time_ms());
SET_CUTOFF(extremely_old_cutoff, get_circuit_build_close_time_ms()*2 + 1000);
SET_CUTOFF(hs_extremely_old_cutoff,
MAX(circ_times.close_ms*2 + 1000,
MAX(get_circuit_build_close_time_ms()*2 + 1000,
options->SocksTimeout * 1000));
TOR_LIST_FOREACH(next_circ, circuit_get_global_list(), head) {
@ -545,12 +545,14 @@ circuit_expire_building(void)
* was a timeout, and the timeout value needs to reset if we
* see enough of them. Note this means we also need to avoid
* double-counting below, too. */
circuit_build_times_count_timeout(&circ_times, first_hop_succeeded);
circuit_build_times_count_timeout(get_circuit_build_times_mutable(),
first_hop_succeeded);
TO_ORIGIN_CIRCUIT(victim)->relaxed_timeout = 1;
}
continue;
} else {
static ratelim_t relax_timeout_limit = RATELIM_INIT(3600);
const double build_close_ms = get_circuit_build_close_time_ms();
log_fn_ratelim(&relax_timeout_limit, LOG_NOTICE, LD_CIRC,
"No circuits are opened. Relaxed timeout for circuit %d "
"(a %s %d-hop circuit in state %s with channel state %s) to "
@ -561,7 +563,8 @@ circuit_expire_building(void)
TO_ORIGIN_CIRCUIT(victim)->build_state->desired_path_len,
circuit_state_to_string(victim->state),
channel_state_to_string(victim->n_chan->state),
(long)circ_times.close_ms, num_live_entry_guards(0));
(long)build_close_ms,
num_live_entry_guards(0));
}
}
@ -641,7 +644,7 @@ circuit_expire_building(void)
}
if (circuit_timeout_want_to_count_circ(TO_ORIGIN_CIRCUIT(victim)) &&
circuit_build_times_enough_to_compute(&circ_times)) {
circuit_build_times_enough_to_compute(get_circuit_build_times())) {
/* Circuits are allowed to last longer for measurement.
* Switch their purpose and wait. */
if (victim->purpose != CIRCUIT_PURPOSE_C_MEASURE_TIMEOUT) {
@ -655,8 +658,9 @@ circuit_expire_building(void)
* have a timeout. We also want to avoid double-counting
* already "relaxed" circuits, which are counted above. */
if (!TO_ORIGIN_CIRCUIT(victim)->relaxed_timeout) {
circuit_build_times_count_timeout(&circ_times,
first_hop_succeeded);
circuit_build_times_count_timeout(
get_circuit_build_times_mutable(),
first_hop_succeeded);
}
continue;
}
@ -673,10 +677,11 @@ circuit_expire_building(void)
(long)(now.tv_sec - victim->timestamp_began.tv_sec),
victim->purpose,
circuit_purpose_to_string(victim->purpose));
} else if (circuit_build_times_count_close(&circ_times,
} else if (circuit_build_times_count_close(
get_circuit_build_times_mutable(),
first_hop_succeeded,
victim->timestamp_created.tv_sec)) {
circuit_build_times_set_timeout(&circ_times);
circuit_build_times_set_timeout(get_circuit_build_times_mutable());
}
}
}
@ -939,7 +944,7 @@ circuit_predict_and_launch_new(void)
* we can still build circuits preemptively as needed. */
if (num < MAX_UNUSED_OPEN_CIRCUITS-2 &&
get_options()->LearnCircuitBuildTimeout &&
circuit_build_times_needs_circuits_now(&circ_times)) {
circuit_build_times_needs_circuits_now(get_circuit_build_times())) {
flags = CIRCLAUNCH_NEED_CAPACITY;
log_info(LD_CIRC,
"Have %d clean circs need another buildtime test circ.", num);
@ -1075,7 +1080,7 @@ circuit_expire_old_circuits_clientside(void)
cutoff = now;
if (get_options()->LearnCircuitBuildTimeout &&
circuit_build_times_needs_circuits(&circ_times)) {
circuit_build_times_needs_circuits(get_circuit_build_times())) {
/* Circuits should be shorter lived if we need more of them
* for learning a good build timeout */
cutoff.tv_sec -= IDLE_TIMEOUT_WHILE_LEARNING;

8
src/or/connection_or.c
View File

@ -1749,7 +1749,7 @@ connection_tls_finish_handshake(or_connection_t *conn)
digest_rcvd) < 0)
return -1;
circuit_build_times_network_is_live(&circ_times);
circuit_build_times_network_is_live(get_circuit_build_times_mutable());
if (tor_tls_used_v1_handshake(conn->tls)) {
conn->link_proto = 1;
@ -1783,7 +1783,7 @@ connection_or_launch_v3_or_handshake(or_connection_t *conn)
tor_assert(connection_or_nonopen_was_started_here(conn));
tor_assert(tor_tls_received_v3_certificate(conn->tls));
circuit_build_times_network_is_live(&circ_times);
circuit_build_times_network_is_live(get_circuit_build_times_mutable());
connection_or_change_state(conn, OR_CONN_STATE_OR_HANDSHAKING_V3);
if (connection_init_or_handshake_state(conn, 1) < 0)
@ -2016,7 +2016,7 @@ connection_or_process_cells_from_inbuf(or_connection_t *conn)
if (conn->chan)
channel_timestamp_active(TLS_CHAN_TO_BASE(conn->chan));
circuit_build_times_network_is_live(&circ_times);
circuit_build_times_network_is_live(get_circuit_build_times_mutable());
channel_tls_handle_var_cell(var_cell, conn);
var_cell_free(var_cell);
} else {
@ -2032,7 +2032,7 @@ connection_or_process_cells_from_inbuf(or_connection_t *conn)
if (conn->chan)
channel_timestamp_active(TLS_CHAN_TO_BASE(conn->chan));
circuit_build_times_network_is_live(&circ_times);
circuit_build_times_network_is_live(get_circuit_build_times_mutable());
connection_fetch_from_buf(buf, cell_network_size, TO_CONN(conn));
/* retrieve cell info from buf (create the host-order struct from the

21
src/or/control.c
View File

@ -4163,32 +4163,26 @@ control_event_newconsensus(const networkstatus_t *consensus)
/** Called when we compute a new circuitbuildtimeout */
int
control_event_buildtimeout_set(const circuit_build_times_t *cbt,
buildtimeout_set_event_t type)
control_event_buildtimeout_set(buildtimeout_set_event_t type,
const char *args)
{
const char *type_string = NULL;
double qnt;
if (!control_event_is_interesting(EVENT_BUILDTIMEOUT_SET))
return 0;
qnt = circuit_build_times_quantile_cutoff();
switch (type) {
case BUILDTIMEOUT_SET_EVENT_COMPUTED:
type_string = "COMPUTED";
break;
case BUILDTIMEOUT_SET_EVENT_RESET:
type_string = "RESET";
qnt = 1.0;
break;
case BUILDTIMEOUT_SET_EVENT_SUSPENDED:
type_string = "SUSPENDED";
qnt = 1.0;
break;
case BUILDTIMEOUT_SET_EVENT_DISCARD:
type_string = "DISCARD";
qnt = 1.0;
break;
case BUILDTIMEOUT_SET_EVENT_RESUME:
type_string = "RESUME";
@ -4199,15 +4193,8 @@ control_event_buildtimeout_set(const circuit_build_times_t *cbt,
}
send_control_event(EVENT_BUILDTIMEOUT_SET, ALL_FORMATS,
"650 BUILDTIMEOUT_SET %s TOTAL_TIMES=%lu "
"TIMEOUT_MS=%lu XM=%lu ALPHA=%f CUTOFF_QUANTILE=%f "
"TIMEOUT_RATE=%f CLOSE_MS=%lu CLOSE_RATE=%f\r\n",
type_string, (unsigned long)cbt->total_build_times,
(unsigned long)cbt->timeout_ms,
(unsigned long)cbt->Xm, cbt->alpha, qnt,
circuit_build_times_timeout_rate(cbt),
(unsigned long)cbt->close_ms,
circuit_build_times_close_rate(cbt));
"650 BUILDTIMEOUT_SET %s %s\r\n",
type_string, args);
return 0;
}

4
src/or/control.h
View File

@ -73,8 +73,8 @@ int control_event_server_status(int severity, const char *format, ...)
int control_event_guard(const char *nickname, const char *digest,
const char *status);
int control_event_conf_changed(const smartlist_t *elements);
int control_event_buildtimeout_set(const circuit_build_times_t *cbt,
buildtimeout_set_event_t type);
int control_event_buildtimeout_set(buildtimeout_set_event_t type,
const char *args);
int control_event_signal(uintptr_t signal);
int init_control_cookie_authentication(int enabled);

2
src/or/entrynodes.c
View File

@ -2279,6 +2279,6 @@ entry_guards_free_all(void)
clear_bridge_list();
smartlist_free(bridge_list);
bridge_list = NULL;
circuit_build_times_free_timeouts(&circ_times);
circuit_build_times_free_timeouts(get_circuit_build_times_mutable());
}

3
src/or/networkstatus.c
View File

@ -1822,7 +1822,8 @@ networkstatus_set_current_consensus(const char *consensus,
* current consensus really alter our view of any OR's rate limits? */
connection_or_update_token_buckets(get_connection_array(), options);
circuit_build_times_new_consensus_params(&circ_times, current_consensus);
circuit_build_times_new_consensus_params(get_circuit_build_times_mutable(),
current_consensus);
}
if (directory_caches_dir_info(options)) {

25
src/or/or.h
View File

@ -4471,30 +4471,7 @@ typedef struct {
int after_firsthop_idx;
} network_liveness_t;
/** Structure for circuit build times history */
typedef struct {
/** The circular array of recorded build times in milliseconds */
build_time_t circuit_build_times[CBT_NCIRCUITS_TO_OBSERVE];
/** Current index in the circuit_build_times circular array */
int build_times_idx;
/** Total number of build times accumulated. Max CBT_NCIRCUITS_TO_OBSERVE */
int total_build_times;
/** Information about the state of our local network connection */
network_liveness_t liveness;
/** Last time we built a circuit. Used to decide to build new test circs */
time_t last_circ_at;
/** "Minimum" value of our pareto distribution (actually mode) */
build_time_t Xm;
/** alpha exponent for pareto dist. */
double alpha;
/** Have we computed a timeout? */
int have_computed_timeout;
/** The exact value for that timeout in milliseconds. Stored as a double
* to maintain precision from calculations to and from quantile value. */
double timeout_ms;
/** How long we wait before actually closing the circuit. */
double close_ms;
} circuit_build_times_t;
typedef struct circuit_build_times_s circuit_build_times_t;
/********************************* config.c ***************************/

5
src/or/statefile.c
View File

@ -238,7 +238,8 @@ or_state_set(or_state_t *new_state)
tor_free(err);
ret = -1;
}
if (circuit_build_times_parse_state(&circ_times, global_state) < 0) {
if (circuit_build_times_parse_state(
get_circuit_build_times_mutable(),global_state) < 0) {
ret = -1;
}
return ret;
@ -405,7 +406,7 @@ or_state_save(time_t now)
* to avoid redundant writes. */
entry_guards_update_state(global_state);
rep_hist_update_state(global_state);
circuit_build_times_update_state(&circ_times, global_state);
circuit_build_times_update_state(get_circuit_build_times(), global_state);
if (accounting_is_enabled(get_options()))
accounting_run_housekeeping(now);