server/ext/checkrusage.ext

#! perl

# restart server when certain resource limits are exceeded

our $MAX_VMSIZE  = $cf::CFG{checkrusage}{vmsize} || 1_000_000_000;

$^O eq "linux" or die "only linux supported right now.\n";

our $STAT_FH;
our $TIMER;

cf::post_init {
   cf::async_ext {
      $STAT_FH = Coro::AIO::aio_open "/proc/self/stat", IO::AIO::O_RDONLY, 0
         or return;

      $TIMER = cf::periodic 10, sub {
         sysseek $STAT_FH, 0, 0;
         sysread $STAT_FH, my $stat, 4096; # only a single line
         my $vmsize = (split / /, $stat)[22];

         cf::cleanup "memory usage growing high, server would run out of memory soon", 0
            if $vmsize >= $MAX_VMSIZE;
      };
   };
};
Revision:	1.7
Committed:	Fri May 14 22:56:47 2010 UTC (14 years ago) by root
Branch:	MAIN
CVS Tags:	rel-3_0
Changes since 1.6:	+10 -8 lines
Log Message:	music groups, music conf file, post_init async
#	Content
1	#! perl
2
3	# restart server when certain resource limits are exceeded
4
5	our $MAX_VMSIZE = $cf::CFG{checkrusage}{vmsize} \|\| 1_000_000_000;
6
7	$^O eq "linux" or die "only linux supported right now.\n";
8
9	our $STAT_FH;
10	our $TIMER;
11
12	cf::post_init {
13	cf::async_ext {
14	$STAT_FH = Coro::AIO::aio_open "/proc/self/stat", IO::AIO::O_RDONLY, 0
15	or return;
16
17	$TIMER = cf::periodic 10, sub {
18	sysseek $STAT_FH, 0, 0;
19	sysread $STAT_FH, my $stat, 4096; # only a single line
20	my $vmsize = (split / /, $stat)[22];
21
22	cf::cleanup "memory usage growing high, server would run out of memory soon", 0
23	if $vmsize >= $MAX_VMSIZE;
24	};
25	};
26	};