xenadmin/XenAdmin/Controls/Ballooning/VMMemoryControlsBase.cs

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/* Copyright (c) Citrix Systems Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* * Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using XenAPI;
namespace XenAdmin.Controls.Ballooning
{
public class VMMemoryControlsBase : UserControl
{
protected List<VM> vms;
protected VM vm0;
protected List<VM_metrics> vm_metrics = new List<VM_metrics>(); // metrics for all the VMs
public virtual List<VM> VMs
{
set
{
vms = value;
vm0 = vms[0]; // just an abbreviation for when we don't care which VM we look at
vm_metrics = new List<VM_metrics>(vms.Count);
foreach (VM vm in vms)
vm_metrics.Add(vm.Connection.Resolve(vm.metrics));
}
}
protected long CalcMemoryUsed()
{
long memoryUsed = 0;
if (vm0.power_state == vm_power_state.Running || vm0.power_state == vm_power_state.Paused)
{
// Calculate the average memory used by these VMs
int count = 0;
foreach (VM_metrics vm_metric in vm_metrics)
{
if (vm_metric != null)
{
memoryUsed += vm_metric.memory_actual;
++count;
}
}
if (count > 0)
memoryUsed /= count;
}
return memoryUsed;
}
}
}