Добавлена папка source в CristalDiskMark

2026-05-29 13:04:54 +07:00
commit bdc2295ee4
240 changed files with 94035 additions and 0 deletions
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+/*
+
+DISKSPD
+
+Copyright(c) Microsoft Corporation
+All rights reserved.
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+
+#include "IoBucketizer.h"
+
+const unsigned __int64 INVALID_BUCKET_DURATION = 0;
+
+IoBucketizer::IoBucketizer()
+    : _bucketDuration(INVALID_BUCKET_DURATION),
+      _validBuckets(0)
+{}
+
+void IoBucketizer::Initialize(unsigned __int64 bucketDuration, size_t validBuckets)
+{
+    if (_bucketDuration != INVALID_BUCKET_DURATION)
+    {
+        throw std::runtime_error("IoBucketizer has already been initialized");
+    }
+    if (bucketDuration == INVALID_BUCKET_DURATION)
+    {
+        throw std::invalid_argument("Bucket duration must be a positive integer");
+    }
+
+    _bucketDuration = bucketDuration;
+    _validBuckets = validBuckets;
+    _vBuckets.reserve(_validBuckets);
+}
+
+void IoBucketizer::Add(unsigned __int64 ioCompletionTime)
+{
+    if (_bucketDuration == INVALID_BUCKET_DURATION)
+    {
+        throw std::runtime_error("IoBucketizer has not been initialized");
+    }
+
+    size_t bucketNumber = static_cast<size_t>(ioCompletionTime / _bucketDuration);
+    size_t currentSize = _vBuckets.size();
+    if (currentSize < bucketNumber + 1) 
+    {
+        _vBuckets.resize(bucketNumber + 1);
+        // Zero the new entries. Note that size is 1-based and bucketNumber is 0-based.
+        for (size_t i = currentSize; i <= bucketNumber; i++)
+        {
+            _vBuckets[i] = 0;
+        }
+    }
+    _vBuckets[bucketNumber]++;
+}
+
+size_t IoBucketizer::GetNumberOfValidBuckets() const 
+{
+    // Buckets beyond this may exist since Add is willing to extend the vector
+    // beyond the expected number of valid buckets, but they are not comparable
+    // buckets (straggling IOs over the timespan boundary).
+    return (_vBuckets.size() > _validBuckets ? _validBuckets : _vBuckets.size());
+}
+
+size_t IoBucketizer::GetNumberOfBuckets() const
+{
+    return _vBuckets.size();
+}
+
+unsigned int IoBucketizer::GetIoBucket(size_t bucketNumber) const 
+{
+    return _vBuckets[bucketNumber];
+}
+
+double IoBucketizer::_GetMean() const 
+{ 
+    size_t numBuckets = GetNumberOfValidBuckets();
+    double sum = 0;
+
+    for (size_t i = 0; i < numBuckets; i++)
+    {
+        sum += static_cast<double>(_vBuckets[i]) / numBuckets;
+    }
+
+    return sum;
+}
+
+double IoBucketizer::GetStandardDeviation() const
+{ 
+    size_t numBuckets = GetNumberOfValidBuckets();
+
+    if(numBuckets == 0) 
+    {
+        return 0.0;
+    }
+
+    double mean = _GetMean();
+    double ssd = 0;
+
+    for (size_t i = 0; i < numBuckets; i++)
+    {
+        double dev = static_cast<double>(_vBuckets[i]) - mean;
+        double sqdev = dev*dev;
+        ssd += sqdev;
+    }
+
+    return sqrt(ssd / numBuckets);
+}
+
+void IoBucketizer::Merge(const IoBucketizer& other) 
+{
+    if(other._vBuckets.size() > _vBuckets.size())
+    {
+        _vBuckets.resize(other._vBuckets.size());
+    }
+    if (other._validBuckets > _validBuckets)
+    {
+        _validBuckets = other._validBuckets;
+    }
+    for(size_t i = 0; i < other._vBuckets.size(); i++) 
+    {
+        _vBuckets[i] += other.GetIoBucket(i);
+    }
+}