Mercurial > hg > nginx-quic
view src/os/win32/ngx_time.c @ 6536:f7849bfb6d21
Improved EPOLLRDHUP handling.
When it's known that the kernel supports EPOLLRDHUP, there is no need in
additional recv() call to get EOF or error when the flag is absent in the
event generated by the kernel. A special runtime test is done at startup
to detect if EPOLLRDHUP is actually supported by the kernel because
epoll_ctl() silently ignores unknown flags.
With this knowledge it's now possible to drop the "ready" flag for partial
read. Previously, the "ready" flag was kept until the recv() returned EOF
or error. In particular, this change allows the lingering close heuristics
(which relies on the "ready" flag state) to actually work on Linux, and not
wait for more data in most cases.
The "available" flag is now used in the read event with the semantics similar
to the corresponding counter in kqueue.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Fri, 13 May 2016 17:19:23 +0300 |
parents | d620f497c50f |
children | f95de1361039 |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> void ngx_gettimeofday(struct timeval *tp) { uint64_t intervals; FILETIME ft; GetSystemTimeAsFileTime(&ft); /* * A file time is a 64-bit value that represents the number * of 100-nanosecond intervals that have elapsed since * January 1, 1601 12:00 A.M. UTC. * * Between January 1, 1970 (Epoch) and January 1, 1601 there were * 134744 days, * 11644473600 seconds or * 11644473600,000,000,0 100-nanosecond intervals. * * See also MSKB Q167296. */ intervals = ((uint64_t) ft.dwHighDateTime << 32) | ft.dwLowDateTime; intervals -= 116444736000000000; tp->tv_sec = (long) (intervals / 10000000); tp->tv_usec = (long) ((intervals % 10000000) / 10); } void ngx_libc_localtime(time_t s, struct tm *tm) { struct tm *t; t = localtime(&s); *tm = *t; } void ngx_libc_gmtime(time_t s, struct tm *tm) { struct tm *t; t = gmtime(&s); *tm = *t; } ngx_int_t ngx_gettimezone(void) { u_long n; TIME_ZONE_INFORMATION tz; n = GetTimeZoneInformation(&tz); switch (n) { case TIME_ZONE_ID_UNKNOWN: return -tz.Bias; case TIME_ZONE_ID_STANDARD: return -(tz.Bias + tz.StandardBias); case TIME_ZONE_ID_DAYLIGHT: return -(tz.Bias + tz.DaylightBias); default: /* TIME_ZONE_ID_INVALID */ return 0; } }