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/*
* include/proto/activity.h
* This file contains macros and inline functions for activity measurements.
*
* Copyright (C) 2000-2018 Willy Tarreau - w@1wt.eu
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, version 2.1
* exclusively.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _PROTO_ACTIVITY_H
#define _PROTO_ACTIVITY_H
#include <common/config.h>
#include <common/hathreads.h>
#include <common/time.h>
#include <types/activity.h>
#include <proto/freq_ctr.h>
/* bit fields for "profiling" */
#define HA_PROF_TASKS 0x00000001 /* enable per-task CPU profiling */
extern unsigned int profiling;
extern struct activity activity[MAX_THREADS];
void report_stolen_time(uint64_t stolen);
/* Collect date and time information before calling poll(). This will be used
* to count the run time of the past loop and the sleep time of the next poll.
* It also makes use of the just updated before_poll timer to count the loop's
* run time and feed the average loop time metric (in microseconds).
*/
static inline void activity_count_runtime()
{
uint64_t new_mono_time;
uint64_t new_cpu_time;
int64_t stolen;
uint32_t run_time;
new_cpu_time = now_cpu_time();
new_mono_time = now_mono_time();
if (prev_cpu_time && prev_mono_time) {
new_cpu_time -= prev_cpu_time;
new_mono_time -= prev_mono_time;
stolen = new_mono_time - new_cpu_time;
if (unlikely(stolen >= 500000)) {
stolen /= 500000;
/* more than half a millisecond difference might
* indicate an undesired preemption.
*/
report_stolen_time(stolen);
}
}
run_time = (before_poll.tv_sec - after_poll.tv_sec) * 1000000U + (before_poll.tv_usec - after_poll.tv_usec);
swrate_add(&activity[tid].avg_loop_us, TIME_STATS_SAMPLES, run_time);
}
#endif /* _PROTO_ACTIVITY_H */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/