mirror of
https://git.haproxy.org/git/haproxy.git/
synced 2025-09-22 06:11:32 +02:00
a700420671
Pollers that support busy polling spend a lot of time (and cause contention) updating the global date when they're looping over themselves while it serves no purpose: what's needed is only an update on the local date to know when to stop looping. This patch splits clock_pudate_date() into a pair of local and global update functions, so that pollers can be easily improved.
55 lines
2.0 KiB
C
55 lines
2.0 KiB
C
/*
|
|
* include/haproxy/clock.h
|
|
* Exported parts for time-keeping
|
|
*
|
|
* Copyright (C) 2000-2021 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 _HAPROXY_CLOCK_H
|
|
#define _HAPROXY_CLOCK_H
|
|
|
|
#include <sys/time.h>
|
|
#include <haproxy/api.h>
|
|
|
|
extern struct timeval start_date; /* the process's start date in wall-clock time */
|
|
extern volatile ullong global_now; /* common monotonic date between all threads (32:32) */
|
|
|
|
extern THREAD_LOCAL struct timeval now; /* internal monotonic date derived from real clock */
|
|
extern THREAD_LOCAL struct timeval date; /* the real current date (wall-clock time) */
|
|
|
|
uint64_t now_cpu_time_thread(int thr);
|
|
uint64_t now_mono_time(void);
|
|
uint64_t now_cpu_time(void);
|
|
void clock_set_local_source(void);
|
|
void clock_update_local_date(int max_wait, int interrupted);
|
|
void clock_update_global_date();
|
|
void clock_init_process_date(void);
|
|
void clock_init_thread_date(void);
|
|
int clock_setup_signal_timer(void *timer, int sig, int val);
|
|
char *timeofday_as_iso_us(int pad);
|
|
uint clock_report_idle(void);
|
|
void clock_leaving_poll(int timeout, int interrupted);
|
|
void clock_entering_poll(void);
|
|
|
|
static inline void clock_update_date(int max_wait, int interrupted)
|
|
{
|
|
clock_update_local_date(max_wait, interrupted);
|
|
clock_update_global_date();
|
|
}
|
|
|
|
#endif
|