/// <inheritdoc />
public EmptyWorkingSetResult TryEmptyWorkingSet(bool isSuspend)
{
(JobObject jobObject, uint[] childProcesses) = GetJobObjectWithChildProcessIds();
if (jobObject == null)
{
return(EmptyWorkingSetResult.None);
}
EmptyWorkingSetResult result = EmptyWorkingSetResult.Success;
VisitJobObjectProcesses(jobObject, childProcesses, (processHandle, pid) =>
{
if (isSuspend)
{
bool isSuspendFailed = false;
try
{
isSuspendFailed = !Interop.Windows.Process.Suspend(System.Diagnostics.Process.GetProcessById((int)pid));
}
#pragma warning disable ERP022
catch (Exception)
{
isSuspendFailed = true;
}
#pragma warning restore ERP022
if (isSuspendFailed)
{
// If suspending the process fails, no need to continue going through the other processes.
result |= EmptyWorkingSetResult.SuspendFailed;
}
}
if (!Interop.Windows.Memory.EmptyWorkingSet(processHandle.DangerousGetHandle()))
{
result |= EmptyWorkingSetResult.EmptyWorkingSetFailed;
}
if (EngineEnvironmentSettings.SetMaxWorkingSetToMin)
{
if (!Interop.Windows.Memory.SetProcessWorkingSetSizeEx(
processHandle.DangerousGetHandle(),
DefaultMin, // the default on systems with 4k pages
DefaultMin,
Interop.Windows.Memory.WorkingSetSizeFlags.MaxEnable | Interop.Windows.Memory.WorkingSetSizeFlags.MinDisable))
{
result |= EmptyWorkingSetResult.SetMaxWorkingSetFailed;
}
}
});
return(result);
}
/// <inheritdoc />
public EmptyWorkingSetResult TryEmptyWorkingSet(bool isSuspend)
{
// Accessing jobObject needs to be protected by m_queryJobDataLock.
// After we collected the child process ids, we might dispose the job object and the child process might be invalid.
// Acquiring the reader lock will prevent the job object from disposing.
using (m_queryJobDataLock.AcquireReadLock())
{
(JobObject jobObject, uint[] childProcesses) = GetJobObjectWithChildProcessIds();
if (jobObject == null)
{
return(EmptyWorkingSetResult.None);
}
EmptyWorkingSetResult result = EmptyWorkingSetResult.Success;
VisitJobObjectProcesses(jobObject, childProcesses, (processHandle, pid) =>
{
if (isSuspend)
{
bool isSuspendFailed = false;
try
{
isSuspendFailed = !Interop.Windows.Process.Suspend(System.Diagnostics.Process.GetProcessById((int)pid));
}
#pragma warning disable ERP022
catch (Exception)
{
isSuspendFailed = true;
}
#pragma warning restore ERP022
if (isSuspendFailed)
{
// If suspending the process fails, no need to continue going through the other processes.
result |= EmptyWorkingSetResult.SuspendFailed;
}
}
if (!Interop.Windows.Memory.EmptyWorkingSet(processHandle.DangerousGetHandle()))
{
result |= EmptyWorkingSetResult.EmptyWorkingSetFailed;
}
if (EngineEnvironmentSettings.SetMaxWorkingSetToMin)
{
if (!Interop.Windows.Memory.SetProcessWorkingSetSizeEx(
processHandle.DangerousGetHandle(),
s_defaultMin, // the default on systems with 4k pages
s_defaultMin,
Interop.Windows.Memory.WorkingSetSizeFlags.MaxEnable | Interop.Windows.Memory.WorkingSetSizeFlags.MinDisable))
{
result |= EmptyWorkingSetResult.SetMaxWorkingSetFailed;
}
}
});
return(result);
}
}
