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path: root/src/osmo-bsc/time_cc.c
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Diffstat (limited to 'src/osmo-bsc/time_cc.c')
-rw-r--r--src/osmo-bsc/time_cc.c208
1 files changed, 0 insertions, 208 deletions
 diff --git a/src/osmo-bsc/time_cc.c b/src/osmo-bsc/time_cc.cdeleted file mode 100644index e78e48d48..000000000--- a/src/osmo-bsc/time_cc.c+++ /dev/null@@ -1,208 +0,0 @@-/* Report the cumulative counter of time for which a flag is true as rate counter. */-/* Copyright (C) 2021 by sysmocom - s.f.m.c. GmbH - *- * All Rights Reserved- *- * Author: Neels Hofmeyr - *- * This program is free software; you can redistribute it and/or modify- * it under the terms of the GNU Affero General Public License as published by- * the Free Software Foundation; either version 3 of the License, or- * (at your option) any later version.- *- * This program is distributed in the hope that it will be useful,- * but WITHOUT ANY WARRANTY; without even the implied warranty of- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the- * GNU Affero General Public License for more details.- *- * You should have received a copy of the GNU Affero General Public License- * along with this program. If not, see .- *- */--#include --#include -#include --#include --#define GRAN_USEC(TIME_CC) ((TIME_CC)->cfg.gran_usec ? : 1000000)-#define ROUND_THRESHOLD_USEC(TIME_CC) ((TIME_CC)->cfg.round_threshold_usec ? \- OSMO_MIN((TIME_CC)->cfg.round_threshold_usec, GRAN_USEC(TIME_CC)) \- : (GRAN_USEC(TIME_CC) / 2))--static uint64_t time_now_usec()-{- struct timespec tp;- if (osmo_clock_gettime(CLOCK_MONOTONIC, &tp))- return 0;- return (uint64_t)tp.tv_sec * 1000000 + tp.tv_nsec / 1000;-}--static void time_cc_forget_sum(struct time_cc *tc, uint64_t now);--static void time_cc_update_from_tdef(struct time_cc *tc, uint64_t now)-{- bool do_forget_sum = false;- if (!tc->cfg.T_defs)- return;- if (tc->cfg.T_gran) {- uint64_t was = GRAN_USEC(tc);- tc->cfg.gran_usec = osmo_tdef_get(tc->cfg.T_defs, tc->cfg.T_gran, OSMO_TDEF_US, -1);- if (was != GRAN_USEC(tc))- do_forget_sum = true;- }- if (tc->cfg.T_round_threshold)- tc->cfg.round_threshold_usec = osmo_tdef_get(tc->cfg.T_defs, tc->cfg.T_round_threshold,- OSMO_TDEF_US, -1);- if (tc->cfg.T_forget_sum) {- uint64_t was = tc->cfg.forget_sum_usec;- tc->cfg.forget_sum_usec = osmo_tdef_get(tc->cfg.T_defs, tc->cfg.T_forget_sum, OSMO_TDEF_US, -1);- if (tc->cfg.forget_sum_usec && was != tc->cfg.forget_sum_usec)- do_forget_sum = true;- }-- if (do_forget_sum && tc->sum)- time_cc_forget_sum(tc, now);-}--static void time_cc_schedule_timer(struct time_cc *tc, uint64_t now);--/* Clear out osmo_timer and internal counting state of struct time_cc. The .cfg remains unaffected. After calling, the- * time_cc instance can be used again to accumulate state as if it had just been initialized. */-void time_cc_cleanup(struct time_cc *tc)-{- osmo_timer_del(&tc->timer);- *tc = (struct time_cc){- .cfg = tc->cfg,- };-}--static void time_cc_start(struct time_cc *tc, uint64_t now)-{- time_cc_cleanup(tc);- /* Set the default of 1 second of granularity */- tc->start_time = now;- tc->last_counted_time = now;- time_cc_update_from_tdef(tc, now);- time_cc_schedule_timer(tc, now);-}--static void time_cc_count_time(struct time_cc *tc, uint64_t now)-{- uint64_t time_delta = now - tc->last_counted_time;- tc->last_counted_time = now;- if (!tc->flag_state)- return;- /* Flag is currently true, cumulate the elapsed time */- tc->total_sum += time_delta;- tc->sum += time_delta;-}--static void time_cc_report(struct time_cc *tc, uint64_t now)-{- uint64_t delta;- uint64_t n;- if (!tc->cfg.rate_ctr)- return;- /* We report a sum "rounded up", ahead of time. If the granularity period has not yet elapsed after the last- * reporting, do not report again yet. */- if (tc->reported_sum > tc->sum)- return;- delta = tc->sum - tc->reported_sum;- /* elapsed full periods */- n = delta / GRAN_USEC(tc);- /* If the delta has passed round_threshold (normally half of gran_usec), increment. */- delta -= n * GRAN_USEC(tc);- if (delta >= ROUND_THRESHOLD_USEC(tc))- n++;- if (!n)- return;-- /* integer sanity, since rate_ctr_add() takes an int argument. */- if (n > INT_MAX)- n = INT_MAX;- rate_ctr_add(tc->cfg.rate_ctr, n);- /* Store the increments of gran_usec that were counted. */- tc->reported_sum += n * GRAN_USEC(tc);-}--static void time_cc_forget_sum(struct time_cc *tc, uint64_t now)-{- tc->reported_sum = 0;- tc->sum = 0;-- if (tc->last_counted_time < now)- tc->last_counted_time = now;-}--/* Initialize struct time_cc. Call this once before use, and before setting up the .cfg items. */-void time_cc_init(struct time_cc *tc)-{- *tc = (struct time_cc){0};-}--void time_cc_set_flag(struct time_cc *tc, bool flag)-{- uint64_t now = time_now_usec();- if (!tc->start_time)- time_cc_start(tc, now);- /* No flag change == no effect */- if (flag == tc->flag_state)- return;- /* Sum up elapsed time, report increments for that. */- time_cc_count_time(tc, now);- time_cc_report(tc, now);- tc->flag_state = flag;- time_cc_schedule_timer(tc, now);-}--static void time_cc_timer_cb(void *data)-{- struct time_cc *tc = data;- uint64_t now = time_now_usec();-- time_cc_update_from_tdef(tc, now);-- if (tc->flag_state) {- time_cc_count_time(tc, now);- time_cc_report(tc, now);- } else if (tc->cfg.forget_sum_usec && tc->sum- && (now >= tc->last_counted_time + tc->cfg.forget_sum_usec)) {- time_cc_forget_sum(tc, now);- }- time_cc_schedule_timer(tc, now);-}--static void time_cc_schedule_timer(struct time_cc *tc, uint64_t now)-{- uint64_t next_event = UINT64_MAX;-- time_cc_update_from_tdef(tc, now);-- /* Figure out the next time we should do anything, if the flag state remains unchanged. */- /* If it is required, when will the next forget_sum happen? */- if (tc->cfg.forget_sum_usec && !tc->flag_state && tc->sum > 0) {- uint64_t next_forget_time = tc->last_counted_time + tc->cfg.forget_sum_usec;- next_event = OSMO_MIN(next_event, next_forget_time);- }- /* Next rate_ctr increment? */- if (tc->flag_state && tc->cfg.rate_ctr) {- uint64_t next_inc = now + (tc->reported_sum - tc->sum) + ROUND_THRESHOLD_USEC(tc);- next_event = OSMO_MIN(next_event, next_inc);- }-- /* No event coming up? */- if (next_event == UINT64_MAX)- return;-- if (next_event <= now)- next_event = 0;- else- next_event -= now;-- osmo_timer_setup(&tc->timer, time_cc_timer_cb, tc);- osmo_timer_del(&tc->timer);- osmo_timer_schedule(&tc->timer, next_event / 1000000, next_event % 1000000);-}
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