--- deliantra/server/ext/checkrusage.ext	2007/01/27 00:14:03	1.4
+++ deliantra/server/ext/checkrusage.ext	2016/11/16 22:14:05	1.9
@@ -2,23 +2,26 @@
 
 # restart server when certain resource limits are exceeded
 
-our $MAX_VMSIZE  = $cf::CFG{checkrusage}{vmsize} || 1_000_000_000;
+# TODO, CONF framework?
+our $MAX_VMSIZE = $cf::CFG{checkrusage}{vmsize} || 1_000_000_000;
 
 $^O eq "linux" or die "only linux supported right now.\n";
 
-Event->timer (
-   reentrant => 0,
-   data      => cf::WF_AUTOCANCEL,
-   interval  => 10,
-   after     => 10,
-   cb        => sub {
-      open my $fh, "</proc/self/stat"
-         or return;
+our $STAT_FH;
+our $TIMER;
 
-      sysread $fh, my $stat, 4096; # only a single line
-      my $vmsize = (split / /, $stat)[22];
+cf::post_init {
+   cf::async_ext {
+      $STAT_FH = Coro::AIO::aio_open "/proc/self/stat", IO::AIO::O_RDONLY, 0
+         or return;
 
-      cf::cleanup "memory usage growing high, server would run out of memory soon", 0
-         if $vmsize >= $MAX_VMSIZE;
-   },
-);
+      $TIMER = cf::periodic 10, sub {
+         sysseek $STAT_FH, 0, 0;
+         sysread $STAT_FH, my $stat, 4096; # only a single line
+         my $vmsize = (split / /, $stat)[22];
+
+         cf::cleanup "memory usage growing high ($vmsize > $MAX_VMSIZE), server would run out of memory soon", 0
+            if $vmsize >= $MAX_VMSIZE;
+      };
+   };
+};