private void ParallelLoadMMF(MModelConfig config)
{
#region [.parallel load by partitions.]
var processorCount = Environment.ProcessorCount;
var partitions = config.LanguageConfigs.SplitByPartitionCountOrGreater(processorCount);
var unitBag = new ConcurrentBag <ParallelLoadUnit>();
Parallel.ForEach(partitions,
new ParallelOptions()
{
MaxDegreeOfParallelism = processorCount
},
() => default(ParallelLoadUnit),
(partition, loopState, i, unit) =>
{
const int EMPIRICALLY_CHOSEN_FUSKING_NUMBER = 27;
var capacity = (int)(partition.TotalModelFilenameLengths / EMPIRICALLY_CHOSEN_FUSKING_NUMBER);
unit.Initialize(capacity);
foreach (var languageConfig in partition.LanguageConfigs)
{
LanguageModelFileReaderMMF.Read(languageConfig, unit.LoadMMFCallback);
}
return(unit);
},
(unit) =>
{
if (unit.DictionaryNative != null && unit.DictionaryNative.Count != 0)
{
unitBag.Add(unit);
}
}
);
#endregion
#region [.merge.]
var dictionary = new DictionaryNative(config.ModelDictionaryCapacity);
foreach (var dict in unitBag.Select(unit => unit.DictionaryNative))
{
dictionary.MergeWith(dict);
dict.Dispose();
}
_Dictionary = dictionary;
unitBag = null;
#endregion
}
private void ConsecutivelyLoadMMF(MModelConfig config)
{
_Dictionary = (0 < config.ModelDictionaryCapacity)
? new Dictionary <string, BucketValue>(config.ModelDictionaryCapacity)
: new Dictionary <string, BucketValue>();
var callback = new LoadModelFilenameContentCallback(ConsecutivelyLoadMMFCallback);
foreach (var languageConfig in config.LanguageConfigs)
{
LanguageModelFileReaderMMF.Read(languageConfig, callback);
}
}
/*private static LanguageConfigPartition[] CreatePartitions( IEnumerable< LanguageConfig > languageConfigs, int processorCount )
* {
* var array = languageConfigs.Select( lc => new { LanguageConfig = lc, ModelFilenameLength = (new FileInfo( lc.ModelFilename )).Length } )
* .OrderByDescending( a => a.ModelFilenameLength )
* .ToArray();
* var partSize = (int) (1.0 * array.Length / processorCount + 0.5);
*
* var partitions = new LanguageConfigPartition[ processorCount ];
* for ( var i = 0; i < array.Length; i++ )
* {
* int partIndex;
* int itemIndexInPart = Math.DivRem( i, partSize - 1, out partIndex );
*
* if ( partitions[ partIndex ].LanguageConfigs == null )
* {
* partitions[ partIndex ].LanguageConfigs = new LanguageConfig[ partSize ];
* }
* //Debug.Assert( part[ itemIndexInPart ] == null );
* var a = array[ i ];
* partitions[ partIndex ].LanguageConfigs[ itemIndexInPart ] = a.LanguageConfig;
* partitions[ partIndex ].TotalModelFilenameLengths += a.ModelFilenameLength;
* }
* return (partitions);
* }*/
private void ConsecutivelyLoadMMF(MModelConfig config)
{
_Dictionary = (0 < config.ModelDictionaryCapacity)
? new Dictionary <IntPtr, BucketValue>(config.ModelDictionaryCapacity, default(IntPtrEqualityComparer))
: new Dictionary <IntPtr, BucketValue>(default(IntPtrEqualityComparer));
var callback = new LoadModelFilenameContentCallback(ConsecutivelyLoadMMFCallback);
foreach (var languageConfig in config.LanguageConfigs)
{
LanguageModelFileReaderMMF.Read(languageConfig, callback);
}
}
private void ParallelLoadMMF(MModelConfig config)
{
#region [.parallel load by partitions.]
var processorCount = Environment.ProcessorCount;
//var partitions = CreatePartitions( config.LanguageConfigs, processorCount );
var partitions = config.LanguageConfigs.SplitByPartitionCountOrGreater(processorCount);
var unitBag = new ConcurrentBag <ParallelLoadUnit>();
Parallel.ForEach(partitions,
new ParallelOptions()
{
MaxDegreeOfParallelism = processorCount
},
() => default(ParallelLoadUnit),
(partition, loopState, i, unit) =>
{
const int EMPIRICALLY_CHOSEN_FUSKING_NUMBER = 27;
var capacity = (int)(partition.TotalModelFilenameLengths / EMPIRICALLY_CHOSEN_FUSKING_NUMBER);
unit.Initialize(capacity);
foreach (var languageConfig in partition.LanguageConfigs)
{
LanguageModelFileReaderMMF.Read(languageConfig, unit.LoadMMFCallback);
}
return(unit);
},
(unit) =>
{
if (unit.Dictionary.Count != 0)
{
unitBag.Add(unit);
}
}
);
#endregion
#region [.merge.]
var bucketVal = default(BucketValue);
var dictionary = (0 < config.ModelDictionaryCapacity)
? new Dictionary <IntPtr, BucketValue>(config.ModelDictionaryCapacity, default(IntPtrEqualityComparer))
: new Dictionary <IntPtr, BucketValue>(default(IntPtrEqualityComparer));
foreach (var dict in unitBag.Select(unit => unit.Dictionary))
{
foreach (var pair in dict)
{
var textPtr = pair.Key;
var bucketValElse = pair.Value;
if (dictionary.TryGetValue(textPtr, out bucketVal))
{
var bucketRef = new BucketRef()
{
Language = bucketValElse.Language,
Weight = bucketValElse.Weight,
NextBucket = bucketValElse.NextBucket,
};
if (bucketVal.NextBucket == null)
{
bucketVal.NextBucket = bucketRef;
dictionary[textPtr] = bucketVal;
}
else
{
var br = bucketVal.NextBucket;
for ( ; br.NextBucket != null; br = br.NextBucket)
{
;
}
br.NextBucket = bucketRef;
}
}
else
{
dictionary.Add(textPtr, bucketValElse);
}
}
//dict.Clear(); //--- too slow => TODO: вытащить словарь/pull dictionary ---//
}
_Dictionary = dictionary;
unitBag = null;
#endregion
}