static LoadedAssembly TryReadFromCache(string cacheFileName, DateTime lastWriteTime)
{
if (cacheFileName == null || !File.Exists(cacheFileName))
{
return(null);
}
//LoggingService.Debug("Deserializing " + cacheFileName);
try {
using (FileStream fs = new FileStream(cacheFileName, FileMode.Open, FileAccess.Read, FileShare.Read | FileShare.Delete, 4096, FileOptions.SequentialScan)) {
using (BinaryReader reader = new BinaryReaderWith7BitEncodedInts(fs)) {
if (reader.ReadInt64() != lastWriteTime.Ticks)
{
LoggingService.Debug("Timestamp mismatch, deserialization aborted. (" + cacheFileName + ")");
return(null);
}
FastSerializer s = new FastSerializer();
return(s.Deserialize(reader) as LoadedAssembly);
}
}
} catch (IOException ex) {
LoggingService.Warn(ex);
return(null);
} catch (UnauthorizedAccessException ex) {
LoggingService.Warn(ex);
return(null);
} catch (SerializationException ex) {
LoggingService.Warn(ex);
return(null);
}
}
static T DeserializeObject <T> (string path) where T : class
{
var t = Counters.ParserService.ObjectDeserialized.BeginTiming(path);
try {
using (var fs = new FileStream(path, System.IO.FileMode.Open, FileAccess.Read, FileShare.Read, 4096, FileOptions.SequentialScan)) {
using (var reader = new BinaryReaderWith7BitEncodedInts(fs)) {
lock (sharedSerializer) {
return((T)sharedSerializer.Deserialize(reader));
}
}
}
} catch (Exception e) {
LoggingService.LogError("Error while trying to deserialize " + typeof(T).FullName + ". stack trace:" + Environment.StackTrace, e);
return(default(T));
} finally {
t.Dispose();
}
}
static IProjectContent TryReadFromCache(string cacheFileName)
{
if (cacheFileName == null || !File.Exists(cacheFileName))
{
return(null);
}
LoggingService.Debug("Deserializing " + cacheFileName);
try {
using (FileStream fs = new FileStream(cacheFileName, FileMode.Open, FileAccess.Read, FileShare.Read | FileShare.Delete, 4096, FileOptions.SequentialScan)) {
using (BinaryReader reader = new BinaryReaderWith7BitEncodedInts(fs)) {
if (reader.ReadInt32() != cacheMagicNumber)
{
LoggingService.Warn("Incorrect magic number");
return(null);
}
FastSerializer s = new FastSerializer();
return((IProjectContent)s.Deserialize(reader));
}
}
} catch (IOException ex) {
LoggingService.Warn(ex);
return(null);
} catch (UnauthorizedAccessException ex) {
LoggingService.Warn(ex);
return(null);
} catch (SerializationException ex) {
LoggingService.Warn(ex);
return(null);
} catch (InvalidCastException ex) {
// can happen if serialized types are incompatible to expected types
LoggingService.Warn(ex);
return(null);
} catch (FormatException ex) {
// e.g. invalid 7-bit-encoded int
LoggingService.Warn(ex);
return(null);
}
}
