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fcdcb377a4
Because in 95 years, we or our successors will surely care about enforcing the BSD license terms on this code. Right?
98 lines
4.2 KiB
C
98 lines
4.2 KiB
C
/* Copyright (c) 2001 Matej Pfajfar.
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* Copyright (c) 2001-2004, Roger Dingledine.
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* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
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* Copyright (c) 2007-2014, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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/**
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* \file circuitstats.h
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* \brief Header file for circuitstats.c
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**/
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#ifndef TOR_CIRCUITSTATS_H
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#define TOR_CIRCUITSTATS_H
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const circuit_build_times_t *get_circuit_build_times(void);
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circuit_build_times_t *get_circuit_build_times_mutable(void);
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double get_circuit_build_close_time_ms(void);
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double get_circuit_build_timeout_ms(void);
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int circuit_build_times_disabled(void);
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int circuit_build_times_enough_to_compute(const circuit_build_times_t *cbt);
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void circuit_build_times_update_state(const circuit_build_times_t *cbt,
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or_state_t *state);
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int circuit_build_times_parse_state(circuit_build_times_t *cbt,
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or_state_t *state);
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void circuit_build_times_count_timeout(circuit_build_times_t *cbt,
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int did_onehop);
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int circuit_build_times_count_close(circuit_build_times_t *cbt,
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int did_onehop, time_t start_time);
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void circuit_build_times_set_timeout(circuit_build_times_t *cbt);
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int circuit_build_times_add_time(circuit_build_times_t *cbt,
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build_time_t time);
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int circuit_build_times_needs_circuits(const circuit_build_times_t *cbt);
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int circuit_build_times_needs_circuits_now(const circuit_build_times_t *cbt);
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void circuit_build_times_init(circuit_build_times_t *cbt);
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void circuit_build_times_free_timeouts(circuit_build_times_t *cbt);
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void circuit_build_times_new_consensus_params(circuit_build_times_t *cbt,
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networkstatus_t *ns);
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double circuit_build_times_timeout_rate(const circuit_build_times_t *cbt);
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double circuit_build_times_close_rate(const circuit_build_times_t *cbt);
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void circuit_build_times_update_last_circ(circuit_build_times_t *cbt);
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#ifdef CIRCUITSTATS_PRIVATE
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STATIC double circuit_build_times_calculate_timeout(circuit_build_times_t *cbt,
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double quantile);
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STATIC int circuit_build_times_update_alpha(circuit_build_times_t *cbt);
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STATIC void circuit_build_times_reset(circuit_build_times_t *cbt);
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/* Network liveness functions */
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STATIC int circuit_build_times_network_check_changed(
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circuit_build_times_t *cbt);
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#endif
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#ifdef TOR_UNIT_TESTS
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build_time_t circuit_build_times_generate_sample(circuit_build_times_t *cbt,
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double q_lo, double q_hi);
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double circuit_build_times_cdf(circuit_build_times_t *cbt, double x);
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void circuit_build_times_initial_alpha(circuit_build_times_t *cbt,
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double quantile, double time_ms);
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void circuitbuild_running_unit_tests(void);
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#endif
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/* Network liveness functions */
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void circuit_build_times_network_is_live(circuit_build_times_t *cbt);
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int circuit_build_times_network_check_live(const circuit_build_times_t *cbt);
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void circuit_build_times_network_circ_success(circuit_build_times_t *cbt);
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#ifdef CIRCUITSTATS_PRIVATE
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/** Structure for circuit build times history */
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struct circuit_build_times_s {
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/** The circular array of recorded build times in milliseconds */
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build_time_t circuit_build_times[CBT_NCIRCUITS_TO_OBSERVE];
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/** Current index in the circuit_build_times circular array */
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int build_times_idx;
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/** Total number of build times accumulated. Max CBT_NCIRCUITS_TO_OBSERVE */
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int total_build_times;
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/** Information about the state of our local network connection */
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network_liveness_t liveness;
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/** Last time we built a circuit. Used to decide to build new test circs */
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time_t last_circ_at;
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/** "Minimum" value of our pareto distribution (actually mode) */
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build_time_t Xm;
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/** alpha exponent for pareto dist. */
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double alpha;
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/** Have we computed a timeout? */
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int have_computed_timeout;
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/** The exact value for that timeout in milliseconds. Stored as a double
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* to maintain precision from calculations to and from quantile value. */
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double timeout_ms;
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/** How long we wait before actually closing the circuit. */
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double close_ms;
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};
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#endif
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#endif
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