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dedicated lock objects for safety

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This commit is contained in:
Robert McRackan 2021-09-24 11:46:37 -04:00
parent d2eaf26117
commit fd56017af5
3 changed files with 13 additions and 13 deletions
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7
FileManager/PictureStorage.cs
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@ -43,11 +43,12 @@ namespace FileManager
public static event EventHandler<PictureCachedEventArgs> PictureCached;
private static BlockingCollection<PictureDefinition> DownloadQueue { get; } = new BlockingCollection<PictureDefinition>();
private static object cacheLocker { get; } = new object();
private static Dictionary<PictureDefinition, byte[]> cache { get; } = new Dictionary<PictureDefinition, byte[]>();
private static Dictionary<PictureSize, byte[]> defaultImages { get; } = new Dictionary<PictureSize, byte[]>();
public static (bool isDefault, byte[] bytes) GetPicture(PictureDefinition def)
{
lock (cache)
lock (cacheLocker)
{
if (cache.ContainsKey(def))
return (false, cache[def]);
@ -67,7 +68,7 @@ namespace FileManager
public static byte[] GetPictureSynchronously(PictureDefinition def)
{
lock (cache)
lock (cacheLocker)
{
if (!cache.ContainsKey(def) || cache[def] == null)
{
@ -104,7 +105,7 @@ namespace FileManager
var bytes = downloadBytes(def);
saveFile(def, bytes);
lock (cache)
lock (cacheLocker)
cache[def] = bytes;
PictureCached?.Invoke(nameof(PictureStorage), new PictureCachedEventArgs { Definition = def, Picture = bytes });