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From: Eric Wong <e@80x24.org>
To: meta@public-inbox.org
Subject: [PATCH 03/57] ds: use and export monotonic now()
Date: Mon, 24 Jun 2019 02:52:04 +0000
Message-ID: <20190624025258.25592-4-e@80x24.org> (raw)
In-Reply-To: <20190624025258.25592-1-e@80x24.org>

All of our internal timing code should use monotonic clocks
for consistency against system clock adjustments.

This can be shared by our Daemon and NNTP packages.
---
 lib/PublicInbox/DS.pm     | 11 +++++++----
 lib/PublicInbox/Daemon.pm |  9 ++++-----
 lib/PublicInbox/NNTP.pm   |  4 +---
 3 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/lib/PublicInbox/DS.pm b/lib/PublicInbox/DS.pm
index 9e24ed78..e7db2034 100644
--- a/lib/PublicInbox/DS.pm
+++ b/lib/PublicInbox/DS.pm
@@ -17,10 +17,11 @@ package PublicInbox::DS;
 use strict;
 use bytes;
 use POSIX ();
-use Time::HiRes ();
 use IO::Handle qw();
 use Fcntl qw(FD_CLOEXEC F_SETFD F_GETFD);
-
+use Time::HiRes qw(clock_gettime CLOCK_MONOTONIC);
+use parent qw(Exporter);
+our @EXPORT_OK = qw(now);
 use warnings;
 
 use PublicInbox::Syscall qw(:epoll);
@@ -115,7 +116,7 @@ sub AddTimer {
     my $class = shift;
     my ($secs, $coderef) = @_;
 
-    my $fire_time = Time::HiRes::time() + $secs;
+    my $fire_time = now() + $secs;
 
     my $timer = bless [$fire_time, $coderef], "PublicInbox::DS::Timer";
 
@@ -195,11 +196,13 @@ sub FirstTimeEventLoop {
     }
 }
 
+sub now () { clock_gettime(CLOCK_MONOTONIC) }
+
 # runs timers and returns milliseconds for next one, or next event loop
 sub RunTimers {
     return $LoopTimeout unless @Timers;
 
-    my $now = Time::HiRes::time();
+    my $now = now();
 
     # Run expired timers
     while (@Timers && $Timers[0][0] <= $now) {
diff --git a/lib/PublicInbox/Daemon.pm b/lib/PublicInbox/Daemon.pm
index 227ba5f9..b8d6b572 100644
--- a/lib/PublicInbox/Daemon.pm
+++ b/lib/PublicInbox/Daemon.pm
@@ -9,10 +9,9 @@ use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev/;
 use IO::Handle;
 use IO::Socket;
 use Cwd qw/abs_path/;
-use Time::HiRes qw(clock_gettime CLOCK_MONOTONIC);
 STDOUT->autoflush(1);
 STDERR->autoflush(1);
-require PublicInbox::DS;
+use PublicInbox::DS qw(now);
 require PublicInbox::EvCleanup;
 require POSIX;
 require PublicInbox::Listener;
@@ -183,7 +182,7 @@ sub worker_quit {
 	PublicInbox::DS->SetPostLoopCallback(sub {
 		my ($dmap, undef) = @_;
 		my $n = 0;
-		my $now = clock_gettime(CLOCK_MONOTONIC);
+		my $now = now();
 
 		foreach my $s (values %$dmap) {
 			$s->can('busy') or next;
@@ -195,9 +194,9 @@ sub worker_quit {
 			}
 		}
 		if ($n) {
-			if (($warn + 5) < time) {
+			if (($warn + 5) < now()) {
 				warn "$$ quitting, $n client(s) left\n";
-				$warn = time;
+				$warn = now();
 			}
 			unless (defined $proc_name) {
 				$proc_name = (split(/\s+/, $0))[0];
diff --git a/lib/PublicInbox/NNTP.pm b/lib/PublicInbox/NNTP.pm
index 107cbe31..0a473e42 100644
--- a/lib/PublicInbox/NNTP.pm
+++ b/lib/PublicInbox/NNTP.pm
@@ -14,7 +14,7 @@ use PublicInbox::Git;
 require PublicInbox::EvCleanup;
 use Email::Simple;
 use POSIX qw(strftime);
-use Time::HiRes qw(clock_gettime CLOCK_MONOTONIC);
+PublicInbox::DS->import('now');
 use Digest::SHA qw(sha1_hex);
 use Time::Local qw(timegm timelocal);
 use constant {
@@ -25,8 +25,6 @@ use constant {
 	r430 => '430 No article with that message-id',
 };
 
-sub now () { clock_gettime(CLOCK_MONOTONIC) };
-
 my @OVERVIEW = qw(Subject From Date Message-ID References Xref);
 my $OVERVIEW_FMT = join(":\r\n", @OVERVIEW, qw(Bytes Lines)) . ":\r\n";
 my $LIST_HEADERS = join("\r\n", @OVERVIEW,
-- 
EW


  parent reply index

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-24  2:52 [PATCH 00/57] ds: shrink, TLS support, buffer writes to FS Eric Wong
2019-06-24  2:52 ` [PATCH 01/57] ds: get rid of {closed} field Eric Wong
2019-06-24  2:52 ` [PATCH 02/57] ds: get rid of more unused debug instance methods Eric Wong
2019-06-24  2:52 ` Eric Wong [this message]
2019-06-24  2:52 ` [PATCH 04/57] AddTimer: avoid clock_gettime for the '0' case Eric Wong
2019-06-24  2:52 ` [PATCH 05/57] ds: get rid of on_incomplete_write wrapper Eric Wong
2019-06-24  2:52 ` [PATCH 06/57] ds: lazy initialize wbuf_off Eric Wong
2019-06-24  2:52 ` [PATCH 07/57] ds: split out from ->flush_write and ->write Eric Wong
2019-06-24  2:52 ` [PATCH 08/57] ds: lazy-initialize wbuf Eric Wong
2019-06-24  2:52 ` [PATCH 09/57] ds: don't pass `events' arg to EPOLL_CTL_DEL Eric Wong
2019-06-24  2:52 ` [PATCH 10/57] ds: remove support for DS->write(undef) Eric Wong
2019-06-24  2:52 ` [PATCH 11/57] http: favor DS->write(strref) when reasonable Eric Wong
2019-06-24  2:52 ` [PATCH 12/57] ds: share send(..., MSG_MORE) logic Eric Wong
2019-06-24  2:52 ` [PATCH 13/57] ds: switch write buffering to use a tempfile Eric Wong
2019-06-24  2:52 ` [PATCH 14/57] ds: get rid of redundant and unnecessary POLL* constants Eric Wong
2019-06-24  2:52 ` [PATCH 15/57] syscall: get rid of unused EPOLL* constants Eric Wong
2019-06-24  2:52 ` [PATCH 16/57] syscall: get rid of unnecessary uname local vars Eric Wong
2019-06-24  2:52 ` [PATCH 17/57] ds: set event flags directly at initialization Eric Wong
2019-06-24  2:52 ` [PATCH 18/57] ds: import IO::KQueue namespace Eric Wong
2019-06-24  2:52 ` [PATCH 19/57] ds: share watch_chg between watch_read/watch_write Eric Wong
2019-06-24  2:52 ` [PATCH 20/57] ds: remove IO::Poll support (for now) Eric Wong
2019-06-24  2:52 ` [PATCH 21/57] ds: get rid of event_watch field Eric Wong
2019-06-24  2:52 ` [PATCH 22/57] httpd/async: remove EINTR check Eric Wong
2019-06-24  2:52 ` [PATCH 23/57] spawn: remove `Blocking' flag handling Eric Wong
2019-06-24  2:52 ` [PATCH 24/57] qspawn: describe where `$rpipe' come from Eric Wong
2019-06-24  2:52 ` [PATCH 25/57] http|nntp: favor "$! == EFOO" over $!{EFOO} checks Eric Wong
2019-06-24  2:52 ` [PATCH 26/57] ds: favor `delete' over assigning fields to `undef' Eric Wong
2019-06-24  2:52 ` [PATCH 27/57] http: don't pass extra args to PublicInbox::DS::close Eric Wong
2019-06-24  2:52 ` [PATCH 28/57] ds: pass $self to code references Eric Wong
2019-06-24  2:52 ` [PATCH 29/57] evcleanup: replace _run_asap with `event_step' callback Eric Wong
2019-06-24  2:52 ` [PATCH 30/57] ds: remove pointless exit calls Eric Wong
2019-06-24  2:52 ` [PATCH 31/57] http|nntp: be explicit about bytes::length on rbuf Eric Wong
2019-06-24  2:52 ` [PATCH 32/57] ds: hoist out do_read from NNTP and HTTP Eric Wong
2019-06-24  2:52 ` [PATCH 33/57] nntp: simplify re-arming/requeue logic Eric Wong
2019-06-24  2:52 ` [PATCH 34/57] allow use of PerlIO layers for filesystem writes Eric Wong
2019-06-24  2:52 ` [PATCH 35/57] ds: deal better with FS-related errors IO buffers Eric Wong
2019-06-24  2:52 ` [PATCH 36/57] nntp: wait for writability before sending greeting Eric Wong
2019-06-24  2:52 ` [PATCH 37/57] nntp: NNTPS and NNTP+STARTTLS working Eric Wong
2019-06-24  2:52 ` [PATCH 38/57] certs/create-certs.perl: fix cert validity on 32-bit Eric Wong
2019-06-24  2:52 ` [PATCH 39/57] daemon: map inherited sockets to well-known schemes Eric Wong
2019-06-24  2:52 ` [PATCH 40/57] ds|nntp: use CORE::close on socket Eric Wong
2019-06-24  2:52 ` [PATCH 41/57] nntp: call SSL_shutdown in normal cases Eric Wong
2019-06-24  2:52 ` [PATCH 42/57] t/nntpd-tls: slow client connection test Eric Wong
2019-06-24  2:52 ` [PATCH 43/57] daemon: use SSL_MODE_RELEASE_BUFFERS Eric Wong
2019-06-24  2:52 ` [PATCH 44/57] ds: allow ->write callbacks to syswrite directly Eric Wong
2019-06-24  2:52 ` [PATCH 45/57] nntp: reduce allocations for greeting Eric Wong
2019-06-24  2:52 ` [PATCH 46/57] ds: always use EV_ADD with EV_SET Eric Wong
2019-06-24  2:52 ` [PATCH 47/57] nntp: simplify long response logic and fix nesting Eric Wong
2019-06-24  2:52 ` [PATCH 48/57] ds: flush_write runs ->write callbacks even if closed Eric Wong
2019-06-24  2:52 ` [PATCH 49/57] nntp: lazily allocate and stash rbuf Eric Wong
2019-06-24  2:52 ` [PATCH 50/57] ci: require IO::KQueue on FreeBSD, for now Eric Wong
2019-06-24  2:52 ` [PATCH 51/57] nntp: send greeting immediately for plain sockets Eric Wong
2019-06-24  2:52 ` [PATCH 52/57] daemon: set TCP_DEFER_ACCEPT on everything but NNTP Eric Wong
2019-06-24  2:52 ` [PATCH 53/57] daemon: use FreeBSD accept filters on non-NNTP Eric Wong
2019-06-24  2:52 ` [PATCH 54/57] ds: split out IO::KQueue-specific code Eric Wong
2019-06-24  5:24   ` Eric Wong
2019-06-24  2:52 ` [PATCH 55/57] ds: reimplement IO::Poll support to look like epoll Eric Wong
2019-06-24  2:52 ` [PATCH 56/57] Revert "ci: require IO::KQueue on FreeBSD, for now" Eric Wong
2019-06-24  2:52 ` [PATCH 57/57] ds: reduce overhead of tempfile creation Eric Wong
2019-06-24  5:25 ` [PATCH 58/57] Makefile: skip DSKQXS in global syntax check Eric Wong
2019-06-24 18:28 ` [PATCH 59/57] ds: ->write must not clobber empty wbuf array Eric Wong

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