81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/*
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* include/proto/activity.h
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* This file contains macros and inline functions for activity measurements.
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*
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* Copyright (C) 2000-2018 Willy Tarreau - w@1wt.eu
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _PROTO_ACTIVITY_H
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#define _PROTO_ACTIVITY_H
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#include <common/config.h>
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#include <common/hathreads.h>
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#include <common/time.h>
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#include <types/activity.h>
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#include <proto/freq_ctr.h>
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/* bit fields for "profiling" */
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#define HA_PROF_TASKS 0x00000001 /* enable per-task CPU profiling */
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extern unsigned int profiling;
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extern struct activity activity[MAX_THREADS];
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void report_stolen_time(uint64_t stolen);
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/* Collect date and time information before calling poll(). This will be used
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* to count the run time of the past loop and the sleep time of the next poll.
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* It also makes use of the just updated before_poll timer to count the loop's
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* run time and feed the average loop time metric (in microseconds).
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*/
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static inline void activity_count_runtime()
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{
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uint64_t new_mono_time;
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uint64_t new_cpu_time;
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int64_t stolen;
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uint32_t run_time;
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new_cpu_time = now_cpu_time();
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new_mono_time = now_mono_time();
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if (prev_cpu_time && prev_mono_time) {
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new_cpu_time -= prev_cpu_time;
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new_mono_time -= prev_mono_time;
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stolen = new_mono_time - new_cpu_time;
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if (unlikely(stolen >= 500000)) {
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stolen /= 500000;
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/* more than half a millisecond difference might
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* indicate an undesired preemption.
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*/
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report_stolen_time(stolen);
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}
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}
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run_time = (before_poll.tv_sec - after_poll.tv_sec) * 1000000U + (before_poll.tv_usec - after_poll.tv_usec);
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swrate_add(&activity[tid].avg_loop_us, TIME_STATS_SAMPLES, run_time);
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}
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#endif /* _PROTO_ACTIVITY_H */
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*/
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