public void Process_memory_meter_should_throw_on_first_call_when_process_doesnt_exists()
{
var pid = GetNonExistentProcessId();
var meter = new ProcessMemoryMeter(pid);
new Action(() => meter.GetMemoryInfo()).Should().ThrowExactly <InvalidOperationException>();
}
public void Process_memory_meter_fails_after_process_exit()
{
using (var testProcess = new TestProcessHandle())
using (var meter = new ProcessMemoryMeter(testProcess.Process.Id))
{
testProcess.Dispose();
new Action(() => meter.GetMemoryInfo()).Should().Throw <InvalidOperationException>();
}
}
public void Does_not_throw()
{
using (var testProcess = new TestProcessHandle())
using (var memMeter = new ProcessMemoryMeter(testProcess.Process.Id))
{
var memInfo = memMeter.GetMemoryInfo();
Console.WriteLine(memInfo);
}
}
private static void WinApi(Process target)
{
using (var meter = new ProcessMemoryMeter(target.Id))
{
for (var i = 0; i < N; ++i)
{
meter.GetMemoryInfo();
}
}
}
public void Process_memory_meter_works_for_private_memory()
{
using (var testProcess = new TestProcessHandle())
using (var meter = new ProcessMemoryMeter(testProcess.Process.Id))
{
var toEat = DataSize.FromMegabytes(100);
var tolerance = DataSize.FromMegabytes(2);
var before = meter.GetMemoryInfo();
testProcess.EatPrivateMemory(toEat.Bytes);
var after = meter.GetMemoryInfo();
Console.WriteLine($"Before: ws {before.WorkingSetBytes} pb {before.PrivateBytes}");
Console.WriteLine($"After: ws {after.WorkingSetBytes} pb {after.PrivateBytes}");
Console.WriteLine($"Diff ws {after.WorkingSetBytes - before.WorkingSetBytes} pb {after.PrivateBytes - before.PrivateBytes}");
(after.WorkingSetBytes - before.WorkingSetBytes).Should().BeLessThan(tolerance.Bytes);
(after.PrivateBytes - before.PrivateBytes).Should().BeGreaterThan((toEat - tolerance).Bytes);
}
}
