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Add CriticalSection for file ops

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This commit is contained in:
Andrew Welker 2020-12-08 12:54:35 -07:00
parent 748b1ca147
commit 169e897748
1 changed files with 39 additions and 21 deletions
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60
essentials-framework/Essentials Core/PepperDashEssentialsBase/Presets/DevicePresets.cs
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@ -15,6 +15,7 @@ namespace PepperDash.Essentials.Core.Presets
/// </summary>
public class DevicePresetsModel : Device
{
private CCriticalSection _fileOps = new CCriticalSection();
private readonly bool _initSuccess;
/// <summary>
@ -101,27 +102,35 @@ namespace PepperDash.Essentials.Core.Presets
public void LoadChannels()
{
PresetsAreLoaded = false;
try
{
var pl = JsonConvert.DeserializeObject<PresetsList>(File.ReadToEnd(_filePath, Encoding.ASCII));
Name = pl.Name;
PresetsList = pl.Channels;
}
catch (Exception e)
{
Debug.Console(2, this,
"LoadChannels: Error reading presets file. These presets will be empty:\r '{0}'\r Error:{1}",
_filePath, e.Message);
// Just save a default empty list
PresetsList = new List<PresetChannel>();
}
PresetsAreLoaded = true;
_fileOps.Enter();
PresetsAreLoaded = false;
try
{
var pl = JsonConvert.DeserializeObject<PresetsList>(File.ReadToEnd(_filePath, Encoding.ASCII));
Name = pl.Name;
PresetsList = pl.Channels;
}
catch (Exception e)
{
Debug.Console(2, this,
"LoadChannels: Error reading presets file. These presets will be empty:\r '{0}'\r Error:{1}",
_filePath, e.Message);
// Just save a default empty list
PresetsList = new List<PresetChannel>();
}
PresetsAreLoaded = true;
var handler = PresetsLoaded;
if (handler != null)
var handler = PresetsLoaded;
if (handler != null)
{
handler(this, EventArgs.Empty);
}
}
finally
{
handler(this, EventArgs.Empty);
_fileOps.Leave();
}
}
@ -209,12 +218,21 @@ namespace PepperDash.Essentials.Core.Presets
private void SavePresets()
{
var json = JsonConvert.SerializeObject(PresetsList);
using (var file = File.Open(_filePath, FileMode.Truncate))
try
{
file.Write(json, Encoding.UTF8);
_fileOps.Enter();
var json = JsonConvert.SerializeObject(PresetsList);
using (var file = File.Open(_filePath, FileMode.Truncate))
{
file.Write(json, Encoding.UTF8);
}
}
finally
{
_fileOps.Leave();
}
}
private void Pulse(Action<bool> act)