public static byte[] ReadAllBytes(string filename, FileInfoCache fileInfoCache)
{
var cacheName = CacheName.Normalize(filename);
using (CreateLock(cacheName))
{
DateTime time = fileInfoCache != null?fileInfoCache.GetFileInfo(cacheName).LastWriteTimeUtc : new FileInfo(cacheName).LastWriteTimeUtc;
lock (_cache)
{
if (!_cache.TryGetValue(cacheName, out var bytes))
{
var b = File.ReadAllBytes(cacheName);
_cache.Add(cacheName, new CacheBlob <byte[]>(time, b));
return(b);
}
else if (bytes.CacheTime != time)
{
bytes.CacheTime = time;
return(bytes.Value = File.ReadAllBytes(cacheName));
}
else
{
return(bytes.Value);
}
}
}
}
private static CrossProcessLock CreateLock(string filename) =>
new CrossProcessLock($"FileCache_{CacheName.Sanitize(filename)}");