[pve-devel] [PATCH v2 container 1/7] config: add pool usage helper

[Fabian Grünbichler]

to avoid repeating those calculations all over the place.

Signed-off-by: Fabian Grünbichler <f.gruenbichler at proxmox.com>
---
 src/PVE/LXC/Config.pm | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/src/PVE/LXC/Config.pm b/src/PVE/LXC/Config.pm
index 1664a35..a6baccd 100644
--- a/src/PVE/LXC/Config.pm
+++ b/src/PVE/LXC/Config.pm
@@ -11,6 +11,7 @@ use PVE::DataCenterConfig;
 use PVE::GuestHelpers;
 use PVE::INotify;
 use PVE::JSONSchema qw(get_standard_option);
+use PVE::ProcFSTools;
 use PVE::Tools;
 
 use PVE::LXC;
@@ -1886,4 +1887,38 @@ sub foreach_passthrough_device {
     }
 }
 
+my $cpuinfo = PVE::ProcFSTools::read_cpuinfo();
+
+# for determining pool usage vs limits
+#
+# this gives the higher of pending or currently configured
+sub get_pool_usage {
+    my ($class, $conf) = @_;
+
+    my $usage = {};
+
+    my $get_max = sub {
+	my $max = 0;
+
+	for my $curr (@_) {
+	    $max = $curr if defined($curr) && $curr > $max;
+	}
+
+	return $max;
+    };
+
+    $usage->{cpu} = $get_max->(
+	$conf->{pending}->{cores},
+	$conf->{cores},
+    );
+    $usage->{cpu} = $cpuinfo->{cpus} if !$usage->{cpu};
+
+    my $swap = $get_max->($conf->{pending}->{swap}, $conf->{swap});
+    my $mem = $get_max->($conf->{pending}->{memory}, $conf->{memory}, 512);
+    $usage->{mem} = $mem+$swap;
+    $usage->{mem} *= 1024*1024;
+
+    return $usage;
+}
+
 1;
-- 
2.39.2