view src/os/unix/ngx_time.h @ 9143:48691bab4474

QUIC: fixed probe-congestion deadlock. When probe timeout expired while congestion window was exhausted, probe PINGs could not be sent. As a result, lost packets could not be declared lost and congestion window could not be freed for new packets. This deadlock continued until connection idle timeout expiration. Now PINGs are sent separately from the frame queue without congestion control, as specified by RFC 9002, Section 7: An endpoint MUST NOT send a packet if it would cause bytes_in_flight (see Appendix B.2) to be larger than the congestion window, unless the packet is sent on a PTO timer expiration (see Section 6.2) or when entering recovery (see Section 7.3.2).
author Roman Arutyunyan <arut@nginx.com>
date Mon, 14 Aug 2023 08:28:30 +0400
parents d620f497c50f
children
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_TIME_H_INCLUDED_
#define _NGX_TIME_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>


typedef ngx_rbtree_key_t      ngx_msec_t;
typedef ngx_rbtree_key_int_t  ngx_msec_int_t;

typedef struct tm             ngx_tm_t;

#define ngx_tm_sec            tm_sec
#define ngx_tm_min            tm_min
#define ngx_tm_hour           tm_hour
#define ngx_tm_mday           tm_mday
#define ngx_tm_mon            tm_mon
#define ngx_tm_year           tm_year
#define ngx_tm_wday           tm_wday
#define ngx_tm_isdst          tm_isdst

#define ngx_tm_sec_t          int
#define ngx_tm_min_t          int
#define ngx_tm_hour_t         int
#define ngx_tm_mday_t         int
#define ngx_tm_mon_t          int
#define ngx_tm_year_t         int
#define ngx_tm_wday_t         int


#if (NGX_HAVE_GMTOFF)
#define ngx_tm_gmtoff         tm_gmtoff
#define ngx_tm_zone           tm_zone
#endif


#if (NGX_SOLARIS)

#define ngx_timezone(isdst) (- (isdst ? altzone : timezone) / 60)

#else

#define ngx_timezone(isdst) (- (isdst ? timezone + 3600 : timezone) / 60)

#endif


void ngx_timezone_update(void);
void ngx_localtime(time_t s, ngx_tm_t *tm);
void ngx_libc_localtime(time_t s, struct tm *tm);
void ngx_libc_gmtime(time_t s, struct tm *tm);

#define ngx_gettimeofday(tp)  (void) gettimeofday(tp, NULL);
#define ngx_msleep(ms)        (void) usleep(ms * 1000)
#define ngx_sleep(s)          (void) sleep(s)


#endif /* _NGX_TIME_H_INCLUDED_ */