public CounterSample NextSample()
{
string categoryName = this.categoryName;
string machineName = this.machineName;
new PerformanceCounterPermission(PerformanceCounterPermissionAccess.Browse, machineName, categoryName).Demand();
this.Initialize();
CategorySample categorySample = PerformanceCounterLib.GetCategorySample(machineName, categoryName);
CounterDefinitionSample counterDefinitionSample = categorySample.GetCounterDefinitionSample(this.counterName);
this.counterType = counterDefinitionSample.CounterType;
if (!categorySample.IsMultiInstance)
{
if ((this.instanceName != null) && (this.instanceName.Length != 0))
{
throw new InvalidOperationException(SR.GetString("InstanceNameProhibited", new object[] { this.instanceName }));
}
return(counterDefinitionSample.GetSingleValue());
}
if ((this.instanceName == null) || (this.instanceName.Length == 0))
{
throw new InvalidOperationException(SR.GetString("InstanceNameRequired"));
}
return(counterDefinitionSample.GetInstanceValue(this.instanceName));
}
// Will cause an update, raw value
/// <include file='doc\PerformanceCounter.uex' path='docs/doc[@for="PerformanceCounter.NextSample"]/*' />
/// <devdoc>
/// Obtains a counter sample and returns the raw value for it.
/// </devdoc>
public CounterSample NextSample()
{
Initialize();
CategorySample categorySample = PerformanceCounterLib.GetCategorySample(this.machineName, this.categoryName);
try {
CounterDefinitionSample counterSample = categorySample.GetCounterDefinitionSample(this.counterName);
this.counterType = counterSample.CounterType;
if (counterSample.IsSingleInstance)
{
if (instanceName != null && instanceName.Length != 0)
{
throw new InvalidOperationException(SR.GetString(SR.InstanceNameProhibited, this.instanceName));
}
return(counterSample.GetSingleValue());
}
else
{
if (instanceName == null || instanceName.Length == 0)
{
throw new InvalidOperationException(SR.GetString(SR.InstanceNameRequired));
}
return(counterSample.GetInstanceValue(this.instanceName));
}
}
finally {
categorySample.Dispose();
}
}
// Will cause an update, raw value
/// <summary>
/// Obtains a counter sample and returns the raw value for it.
/// </summary>
public CounterSample NextSample()
{
string currentCategoryName = _categoryName;
string currentMachineName = _machineName;
Initialize();
using (CategorySample categorySample = PerformanceCounterLib.GetCategorySample(currentMachineName, currentCategoryName))
{
CounterDefinitionSample counterSample = categorySample.GetCounterDefinitionSample(_counterName);
_counterType = counterSample._counterType;
if (!categorySample._isMultiInstance)
{
if (_instanceName != null && _instanceName.Length != 0)
{
throw new InvalidOperationException(SR.Format(SR.InstanceNameProhibited, _instanceName));
}
return(counterSample.GetSingleValue());
}
else
{
if (_instanceName == null || _instanceName.Length == 0)
{
throw new InvalidOperationException(SR.InstanceNameRequired);
}
return(counterSample.GetInstanceValue(_instanceName));
}
}
}
internal CounterDefinitionSample GetCounterDefinitionSample(string counter)
{
for (int i = 0; i < this.entry.CounterIndexes.Length; i++)
{
int num2 = this.entry.CounterIndexes[i];
string strA = (string)this.library.NameTable[num2];
if ((strA != null) && (string.Compare(strA, counter, StringComparison.OrdinalIgnoreCase) == 0))
{
CounterDefinitionSample sample = (CounterDefinitionSample)this.CounterTable[num2];
if (sample != null)
{
return(sample);
}
foreach (CounterDefinitionSample sample2 in this.CounterTable.Values)
{
if ((sample2.BaseCounterDefinitionSample != null) && (sample2.BaseCounterDefinitionSample.NameIndex == num2))
{
return(sample2.BaseCounterDefinitionSample);
}
}
throw new InvalidOperationException(SR.GetString("CounterLayout"));
}
}
throw new InvalidOperationException(SR.GetString("CantReadCounter", new object[] { counter }));
}
// Will cause an update, raw value
/// <devdoc>
/// Obtains a counter sample and returns the raw value for it.
/// </devdoc>
public CounterSample NextSample()
{
string currentCategoryName = categoryName;
string currentMachineName = machineName;
PerformanceCounterPermission permission = new PerformanceCounterPermission(PerformanceCounterPermissionAccess.Read, currentMachineName, currentCategoryName);
permission.Demand();
Initialize();
CategorySample categorySample = PerformanceCounterLib.GetCategorySample(currentMachineName, currentCategoryName);
CounterDefinitionSample counterSample = categorySample.GetCounterDefinitionSample(this.counterName);
this.counterType = counterSample.CounterType;
if (!categorySample.IsMultiInstance)
{
if (instanceName != null && instanceName.Length != 0)
{
throw new InvalidOperationException(SR.GetString(SR.InstanceNameProhibited, this.instanceName));
}
return(counterSample.GetSingleValue());
}
else
{
if (instanceName == null || instanceName.Length == 0)
{
throw new InvalidOperationException(SR.GetString(SR.InstanceNameRequired));
}
return(counterSample.GetInstanceValue(this.instanceName));
}
}
internal unsafe string[] GetInstanceNamesFromIndex(int categoryIndex)
{
fixed(byte *numRef = this.library.GetPerformanceData(categoryIndex.ToString(CultureInfo.InvariantCulture)))
{
IntPtr ptr = new IntPtr((void *)numRef);
Microsoft.Win32.NativeMethods.PERF_DATA_BLOCK structure = new Microsoft.Win32.NativeMethods.PERF_DATA_BLOCK();
Marshal.PtrToStructure(ptr, structure);
ptr = (IntPtr)(((long)ptr) + structure.HeaderLength);
int numObjectTypes = structure.NumObjectTypes;
Microsoft.Win32.NativeMethods.PERF_OBJECT_TYPE perf_object_type = null;
bool flag = false;
for (int i = 0; i < numObjectTypes; i++)
{
perf_object_type = new Microsoft.Win32.NativeMethods.PERF_OBJECT_TYPE();
Marshal.PtrToStructure(ptr, perf_object_type);
if (perf_object_type.ObjectNameTitleIndex == categoryIndex)
{
flag = true;
break;
}
ptr = (IntPtr)(((long)ptr) + perf_object_type.TotalByteLength);
}
if (!flag)
{
return(new string[0]);
}
int numCounters = perf_object_type.NumCounters;
int numInstances = perf_object_type.NumInstances;
ptr = (IntPtr)(((long)ptr) + perf_object_type.HeaderLength);
if (numInstances == -1)
{
return(new string[0]);
}
CounterDefinitionSample[] sampleArray = new CounterDefinitionSample[numCounters];
for (int j = 0; j < sampleArray.Length; j++)
{
Microsoft.Win32.NativeMethods.PERF_COUNTER_DEFINITION perf_counter_definition = new Microsoft.Win32.NativeMethods.PERF_COUNTER_DEFINITION();
Marshal.PtrToStructure(ptr, perf_counter_definition);
ptr = (IntPtr)(((long)ptr) + perf_counter_definition.ByteLength);
}
string[] strArray = new string[numInstances];
for (int k = 0; k < numInstances; k++)
{
Microsoft.Win32.NativeMethods.PERF_INSTANCE_DEFINITION perf_instance_definition = new Microsoft.Win32.NativeMethods.PERF_INSTANCE_DEFINITION();
Marshal.PtrToStructure(ptr, perf_instance_definition);
strArray[k] = Marshal.PtrToStringUni((IntPtr)(((long)ptr) + perf_instance_definition.NameOffset));
ptr = (IntPtr)(((long)ptr) + perf_instance_definition.ByteLength);
ptr = (IntPtr)(((long)ptr) + Marshal.ReadInt32(ptr));
}
return(strArray);
}
}
internal InstanceDataCollectionCollection ReadCategory()
{
InstanceDataCollectionCollection collections = new InstanceDataCollectionCollection();
for (int i = 0; i < this.entry.CounterIndexes.Length; i++)
{
int num2 = this.entry.CounterIndexes[i];
string counterName = (string)this.library.NameTable[num2];
if ((counterName != null) && (counterName != string.Empty))
{
CounterDefinitionSample sample = (CounterDefinitionSample)this.CounterTable[num2];
if (sample != null)
{
collections.Add(counterName, sample.ReadInstanceData(counterName));
}
}
}
return(collections);
}
internal unsafe string[] GetInstanceNamesFromIndex(int categoryIndex) {
byte[] data = library.GetPerformanceData(categoryIndex.ToString(CultureInfo.InvariantCulture));
fixed (byte* dataPtr = data) {
IntPtr dataRef = new IntPtr((void*) dataPtr);
NativeMethods.PERF_DATA_BLOCK dataBlock = new NativeMethods.PERF_DATA_BLOCK();
Marshal.PtrToStructure(dataRef, dataBlock);
dataRef = (IntPtr)((long)dataRef + dataBlock.HeaderLength);
int numPerfObjects = dataBlock.NumObjectTypes;
NativeMethods.PERF_OBJECT_TYPE perfObject = null;
bool foundCategory = false;
for (int index = 0; index < numPerfObjects; index++) {
perfObject = new NativeMethods.PERF_OBJECT_TYPE();
Marshal.PtrToStructure(dataRef, perfObject);
if (perfObject.ObjectNameTitleIndex == categoryIndex) {
foundCategory = true;
break;
}
dataRef = (IntPtr)((long)dataRef + perfObject.TotalByteLength);
}
if (!foundCategory)
return new string[0];
int counterNumber = perfObject.NumCounters;
int instanceNumber = perfObject.NumInstances;
dataRef = (IntPtr)((long)dataRef + perfObject.HeaderLength);
if (instanceNumber == -1)
return new string[0];
CounterDefinitionSample[] samples = new CounterDefinitionSample[counterNumber];
for (int index = 0; index < samples.Length; ++ index) {
NativeMethods.PERF_COUNTER_DEFINITION perfCounter = new NativeMethods.PERF_COUNTER_DEFINITION();
Marshal.PtrToStructure(dataRef, perfCounter);
dataRef = (IntPtr)((long)dataRef + perfCounter.ByteLength);
}
string[] instanceNames = new string[instanceNumber];
for (int i = 0; i < instanceNumber; i++) {
NativeMethods.PERF_INSTANCE_DEFINITION perfInstance = new NativeMethods.PERF_INSTANCE_DEFINITION();
Marshal.PtrToStructure(dataRef, perfInstance);
instanceNames[i] = Marshal.PtrToStringUni((IntPtr)((long)dataRef + perfInstance.NameOffset));
dataRef = (IntPtr)((long)dataRef + perfInstance.ByteLength);
dataRef = (IntPtr)((long)dataRef + Marshal.ReadInt32(dataRef));
}
return instanceNames;
}
}
internal unsafe CategorySample(byte[] data, CategoryEntry entry, PerformanceCounterLib library) {
this.entry = entry;
this.library = library;
int categoryIndex = entry.NameIndex;
NativeMethods.PERF_DATA_BLOCK dataBlock = new NativeMethods.PERF_DATA_BLOCK();
fixed (byte* dataPtr = data) {
IntPtr dataRef = new IntPtr((void*) dataPtr);
Marshal.PtrToStructure(dataRef, dataBlock);
this.SystemFrequency = dataBlock.PerfFreq;
this.TimeStamp = dataBlock.PerfTime;
this.TimeStamp100nSec = dataBlock.PerfTime100nSec;
dataRef = (IntPtr)((long)dataRef + dataBlock.HeaderLength);
int numPerfObjects = dataBlock.NumObjectTypes;
if (numPerfObjects == 0) {
this.CounterTable = new Hashtable();
this.InstanceNameTable = new Hashtable(StringComparer.OrdinalIgnoreCase);
return;
}
//Need to find the right category, GetPerformanceData might return
//several of them.
NativeMethods.PERF_OBJECT_TYPE perfObject = null;
bool foundCategory = false;
for (int index = 0; index < numPerfObjects; index++) {
perfObject = new NativeMethods.PERF_OBJECT_TYPE();
Marshal.PtrToStructure(dataRef, perfObject);
if (perfObject.ObjectNameTitleIndex == categoryIndex) {
foundCategory = true;
break;
}
dataRef = (IntPtr)((long)dataRef + perfObject.TotalByteLength);
}
if (!foundCategory)
throw new InvalidOperationException(SR.GetString(SR.CantReadCategoryIndex, categoryIndex.ToString(CultureInfo.CurrentCulture)));
this.CounterFrequency = perfObject.PerfFreq;
this.CounterTimeStamp = perfObject.PerfTime;
int counterNumber = perfObject.NumCounters;
int instanceNumber = perfObject.NumInstances;
if (instanceNumber == -1)
IsMultiInstance = false;
else
IsMultiInstance = true;
// Move pointer forward to end of PERF_OBJECT_TYPE
dataRef = (IntPtr)((long)dataRef + perfObject.HeaderLength);
CounterDefinitionSample[] samples = new CounterDefinitionSample[counterNumber];
this.CounterTable = new Hashtable(counterNumber);
for (int index = 0; index < samples.Length; ++ index) {
NativeMethods.PERF_COUNTER_DEFINITION perfCounter = new NativeMethods.PERF_COUNTER_DEFINITION();
Marshal.PtrToStructure(dataRef, perfCounter);
samples[index] = new CounterDefinitionSample(perfCounter, this, instanceNumber);
dataRef = (IntPtr)((long)dataRef + perfCounter.ByteLength);
int currentSampleType = samples[index].CounterType;
if (!PerformanceCounterLib.IsBaseCounter(currentSampleType)) {
// We'll put only non-base counters in the table.
if (currentSampleType != NativeMethods.PERF_COUNTER_NODATA)
this.CounterTable[samples[index].NameIndex] = samples[index];
}
else {
// it's a base counter, try to hook it up to the main counter.
Debug.Assert(index > 0, "Index > 0 because base counters should never be at index 0");
if (index > 0)
samples[index-1].BaseCounterDefinitionSample = samples[index];
}
}
// now set up the InstanceNameTable.
if (!IsMultiInstance) {
this.InstanceNameTable = new Hashtable(1, StringComparer.OrdinalIgnoreCase);
this.InstanceNameTable[PerformanceCounterLib.SingleInstanceName] = 0;
for (int index = 0; index < samples.Length; ++ index) {
samples[index].SetInstanceValue(0, dataRef);
}
}
else {
string[] parentInstanceNames = null;
this.InstanceNameTable = new Hashtable(instanceNumber, StringComparer.OrdinalIgnoreCase);
for (int i = 0; i < instanceNumber; i++) {
NativeMethods.PERF_INSTANCE_DEFINITION perfInstance = new NativeMethods.PERF_INSTANCE_DEFINITION();
Marshal.PtrToStructure(dataRef, perfInstance);
if (perfInstance.ParentObjectTitleIndex > 0 && parentInstanceNames == null)
parentInstanceNames = GetInstanceNamesFromIndex(perfInstance.ParentObjectTitleIndex);
string instanceName;
if (parentInstanceNames != null && perfInstance.ParentObjectInstance >= 0 && perfInstance.ParentObjectInstance < parentInstanceNames.Length - 1)
instanceName = parentInstanceNames[perfInstance.ParentObjectInstance] + "/" + Marshal.PtrToStringUni((IntPtr)((long)dataRef + perfInstance.NameOffset));
else
instanceName = Marshal.PtrToStringUni((IntPtr)((long)dataRef + perfInstance.NameOffset));
//In some cases instance names are not unique (Process), same as perfmon
//generate a unique name.
string newInstanceName = instanceName;
int newInstanceNumber = 1;
while (true) {
if (!this.InstanceNameTable.ContainsKey(newInstanceName)) {
this.InstanceNameTable[newInstanceName] = i;
break;
}
else {
newInstanceName = instanceName + "#" + newInstanceNumber.ToString(CultureInfo.InvariantCulture);
++ newInstanceNumber;
}
}
dataRef = (IntPtr)((long)dataRef + perfInstance.ByteLength);
for (int index = 0; index < samples.Length; ++ index)
samples[index].SetInstanceValue(i, dataRef);
dataRef = (IntPtr)((long)dataRef + Marshal.ReadInt32(dataRef));
}
}
}
}
internal unsafe CategorySample(byte[] data, System.Diagnostics.CategoryEntry entry, PerformanceCounterLib library)
{
this.entry = entry;
this.library = library;
int nameIndex = entry.NameIndex;
Microsoft.Win32.NativeMethods.PERF_DATA_BLOCK structure = new Microsoft.Win32.NativeMethods.PERF_DATA_BLOCK();
fixed (byte* numRef = data)
{
IntPtr ptr = new IntPtr((void*) numRef);
Marshal.PtrToStructure(ptr, structure);
this.SystemFrequency = structure.PerfFreq;
this.TimeStamp = structure.PerfTime;
this.TimeStamp100nSec = structure.PerfTime100nSec;
ptr = (IntPtr) (((long) ptr) + structure.HeaderLength);
int numObjectTypes = structure.NumObjectTypes;
if (numObjectTypes == 0)
{
this.CounterTable = new Hashtable();
this.InstanceNameTable = new Hashtable(StringComparer.OrdinalIgnoreCase);
return;
}
Microsoft.Win32.NativeMethods.PERF_OBJECT_TYPE perf_object_type = null;
bool flag = false;
for (int i = 0; i < numObjectTypes; i++)
{
perf_object_type = new Microsoft.Win32.NativeMethods.PERF_OBJECT_TYPE();
Marshal.PtrToStructure(ptr, perf_object_type);
if (perf_object_type.ObjectNameTitleIndex == nameIndex)
{
flag = true;
break;
}
ptr = (IntPtr) (((long) ptr) + perf_object_type.TotalByteLength);
}
if (!flag)
{
throw new InvalidOperationException(SR.GetString("CantReadCategoryIndex", new object[] { nameIndex.ToString(CultureInfo.CurrentCulture) }));
}
this.CounterFrequency = perf_object_type.PerfFreq;
this.CounterTimeStamp = perf_object_type.PerfTime;
int numCounters = perf_object_type.NumCounters;
int numInstances = perf_object_type.NumInstances;
if (numInstances == -1)
{
this.IsMultiInstance = false;
}
else
{
this.IsMultiInstance = true;
}
ptr = (IntPtr) (((long) ptr) + perf_object_type.HeaderLength);
CounterDefinitionSample[] sampleArray = new CounterDefinitionSample[numCounters];
this.CounterTable = new Hashtable(numCounters);
for (int j = 0; j < sampleArray.Length; j++)
{
Microsoft.Win32.NativeMethods.PERF_COUNTER_DEFINITION perf_counter_definition = new Microsoft.Win32.NativeMethods.PERF_COUNTER_DEFINITION();
Marshal.PtrToStructure(ptr, perf_counter_definition);
sampleArray[j] = new CounterDefinitionSample(perf_counter_definition, this, numInstances);
ptr = (IntPtr) (((long) ptr) + perf_counter_definition.ByteLength);
int counterType = sampleArray[j].CounterType;
if (!PerformanceCounterLib.IsBaseCounter(counterType))
{
if (counterType != 0x40000200)
{
this.CounterTable[sampleArray[j].NameIndex] = sampleArray[j];
}
}
else if (j > 0)
{
sampleArray[j - 1].BaseCounterDefinitionSample = sampleArray[j];
}
}
if (!this.IsMultiInstance)
{
this.InstanceNameTable = new Hashtable(1, StringComparer.OrdinalIgnoreCase);
this.InstanceNameTable["systemdiagnosticsperfcounterlibsingleinstance"] = 0;
for (int k = 0; k < sampleArray.Length; k++)
{
sampleArray[k].SetInstanceValue(0, ptr);
}
}
else
{
string[] instanceNamesFromIndex = null;
this.InstanceNameTable = new Hashtable(numInstances, StringComparer.OrdinalIgnoreCase);
for (int m = 0; m < numInstances; m++)
{
string str;
Microsoft.Win32.NativeMethods.PERF_INSTANCE_DEFINITION perf_instance_definition = new Microsoft.Win32.NativeMethods.PERF_INSTANCE_DEFINITION();
Marshal.PtrToStructure(ptr, perf_instance_definition);
if ((perf_instance_definition.ParentObjectTitleIndex > 0) && (instanceNamesFromIndex == null))
{
instanceNamesFromIndex = this.GetInstanceNamesFromIndex(perf_instance_definition.ParentObjectTitleIndex);
}
if (((instanceNamesFromIndex != null) && (perf_instance_definition.ParentObjectInstance >= 0)) && (perf_instance_definition.ParentObjectInstance < (instanceNamesFromIndex.Length - 1)))
{
str = instanceNamesFromIndex[perf_instance_definition.ParentObjectInstance] + "/" + Marshal.PtrToStringUni((IntPtr) (((long) ptr) + perf_instance_definition.NameOffset));
}
else
{
str = Marshal.PtrToStringUni((IntPtr) (((long) ptr) + perf_instance_definition.NameOffset));
}
string key = str;
int num10 = 1;
while (true)
{
if (!this.InstanceNameTable.ContainsKey(key))
{
this.InstanceNameTable[key] = m;
break;
}
key = str + "#" + num10.ToString(CultureInfo.InvariantCulture);
num10++;
}
ptr = (IntPtr) (((long) ptr) + perf_instance_definition.ByteLength);
for (int n = 0; n < sampleArray.Length; n++)
{
sampleArray[n].SetInstanceValue(m, ptr);
}
ptr = (IntPtr) (((long) ptr) + Marshal.ReadInt32(ptr));
}
}
}
}
internal unsafe string[] GetInstanceNamesFromIndex(int categoryIndex)
{
fixed (byte* numRef = this.library.GetPerformanceData(categoryIndex.ToString(CultureInfo.InvariantCulture)))
{
IntPtr ptr = new IntPtr((void*) numRef);
Microsoft.Win32.NativeMethods.PERF_DATA_BLOCK structure = new Microsoft.Win32.NativeMethods.PERF_DATA_BLOCK();
Marshal.PtrToStructure(ptr, structure);
ptr = (IntPtr) (((long) ptr) + structure.HeaderLength);
int numObjectTypes = structure.NumObjectTypes;
Microsoft.Win32.NativeMethods.PERF_OBJECT_TYPE perf_object_type = null;
bool flag = false;
for (int i = 0; i < numObjectTypes; i++)
{
perf_object_type = new Microsoft.Win32.NativeMethods.PERF_OBJECT_TYPE();
Marshal.PtrToStructure(ptr, perf_object_type);
if (perf_object_type.ObjectNameTitleIndex == categoryIndex)
{
flag = true;
break;
}
ptr = (IntPtr) (((long) ptr) + perf_object_type.TotalByteLength);
}
if (!flag)
{
return new string[0];
}
int numCounters = perf_object_type.NumCounters;
int numInstances = perf_object_type.NumInstances;
ptr = (IntPtr) (((long) ptr) + perf_object_type.HeaderLength);
if (numInstances == -1)
{
return new string[0];
}
CounterDefinitionSample[] sampleArray = new CounterDefinitionSample[numCounters];
for (int j = 0; j < sampleArray.Length; j++)
{
Microsoft.Win32.NativeMethods.PERF_COUNTER_DEFINITION perf_counter_definition = new Microsoft.Win32.NativeMethods.PERF_COUNTER_DEFINITION();
Marshal.PtrToStructure(ptr, perf_counter_definition);
ptr = (IntPtr) (((long) ptr) + perf_counter_definition.ByteLength);
}
string[] strArray = new string[numInstances];
for (int k = 0; k < numInstances; k++)
{
Microsoft.Win32.NativeMethods.PERF_INSTANCE_DEFINITION perf_instance_definition = new Microsoft.Win32.NativeMethods.PERF_INSTANCE_DEFINITION();
Marshal.PtrToStructure(ptr, perf_instance_definition);
strArray[k] = Marshal.PtrToStringUni((IntPtr) (((long) ptr) + perf_instance_definition.NameOffset));
ptr = (IntPtr) (((long) ptr) + perf_instance_definition.ByteLength);
ptr = (IntPtr) (((long) ptr) + Marshal.ReadInt32(ptr));
}
return strArray;
}
}
internal unsafe CategorySample(byte[] data, System.Diagnostics.CategoryEntry entry, PerformanceCounterLib library)
{
this.entry = entry;
this.library = library;
int nameIndex = entry.NameIndex;
Microsoft.Win32.NativeMethods.PERF_DATA_BLOCK structure = new Microsoft.Win32.NativeMethods.PERF_DATA_BLOCK();
fixed(byte *numRef = data)
{
IntPtr ptr = new IntPtr((void *)numRef);
Marshal.PtrToStructure(ptr, structure);
this.SystemFrequency = structure.PerfFreq;
this.TimeStamp = structure.PerfTime;
this.TimeStamp100nSec = structure.PerfTime100nSec;
ptr = (IntPtr)(((long)ptr) + structure.HeaderLength);
int numObjectTypes = structure.NumObjectTypes;
if (numObjectTypes == 0)
{
this.CounterTable = new Hashtable();
this.InstanceNameTable = new Hashtable(StringComparer.OrdinalIgnoreCase);
return;
}
Microsoft.Win32.NativeMethods.PERF_OBJECT_TYPE perf_object_type = null;
bool flag = false;
for (int i = 0; i < numObjectTypes; i++)
{
perf_object_type = new Microsoft.Win32.NativeMethods.PERF_OBJECT_TYPE();
Marshal.PtrToStructure(ptr, perf_object_type);
if (perf_object_type.ObjectNameTitleIndex == nameIndex)
{
flag = true;
break;
}
ptr = (IntPtr)(((long)ptr) + perf_object_type.TotalByteLength);
}
if (!flag)
{
throw new InvalidOperationException(SR.GetString("CantReadCategoryIndex", new object[] { nameIndex.ToString(CultureInfo.CurrentCulture) }));
}
this.CounterFrequency = perf_object_type.PerfFreq;
this.CounterTimeStamp = perf_object_type.PerfTime;
int numCounters = perf_object_type.NumCounters;
int numInstances = perf_object_type.NumInstances;
if (numInstances == -1)
{
this.IsMultiInstance = false;
}
else
{
this.IsMultiInstance = true;
}
ptr = (IntPtr)(((long)ptr) + perf_object_type.HeaderLength);
CounterDefinitionSample[] sampleArray = new CounterDefinitionSample[numCounters];
this.CounterTable = new Hashtable(numCounters);
for (int j = 0; j < sampleArray.Length; j++)
{
Microsoft.Win32.NativeMethods.PERF_COUNTER_DEFINITION perf_counter_definition = new Microsoft.Win32.NativeMethods.PERF_COUNTER_DEFINITION();
Marshal.PtrToStructure(ptr, perf_counter_definition);
sampleArray[j] = new CounterDefinitionSample(perf_counter_definition, this, numInstances);
ptr = (IntPtr)(((long)ptr) + perf_counter_definition.ByteLength);
int counterType = sampleArray[j].CounterType;
if (!PerformanceCounterLib.IsBaseCounter(counterType))
{
if (counterType != 0x40000200)
{
this.CounterTable[sampleArray[j].NameIndex] = sampleArray[j];
}
}
else if (j > 0)
{
sampleArray[j - 1].BaseCounterDefinitionSample = sampleArray[j];
}
}
if (!this.IsMultiInstance)
{
this.InstanceNameTable = new Hashtable(1, StringComparer.OrdinalIgnoreCase);
this.InstanceNameTable["systemdiagnosticsperfcounterlibsingleinstance"] = 0;
for (int k = 0; k < sampleArray.Length; k++)
{
sampleArray[k].SetInstanceValue(0, ptr);
}
}
else
{
string[] instanceNamesFromIndex = null;
this.InstanceNameTable = new Hashtable(numInstances, StringComparer.OrdinalIgnoreCase);
for (int m = 0; m < numInstances; m++)
{
string str;
Microsoft.Win32.NativeMethods.PERF_INSTANCE_DEFINITION perf_instance_definition = new Microsoft.Win32.NativeMethods.PERF_INSTANCE_DEFINITION();
Marshal.PtrToStructure(ptr, perf_instance_definition);
if ((perf_instance_definition.ParentObjectTitleIndex > 0) && (instanceNamesFromIndex == null))
{
instanceNamesFromIndex = this.GetInstanceNamesFromIndex(perf_instance_definition.ParentObjectTitleIndex);
}
if (((instanceNamesFromIndex != null) && (perf_instance_definition.ParentObjectInstance >= 0)) && (perf_instance_definition.ParentObjectInstance < (instanceNamesFromIndex.Length - 1)))
{
str = instanceNamesFromIndex[perf_instance_definition.ParentObjectInstance] + "/" + Marshal.PtrToStringUni((IntPtr)(((long)ptr) + perf_instance_definition.NameOffset));
}
else
{
str = Marshal.PtrToStringUni((IntPtr)(((long)ptr) + perf_instance_definition.NameOffset));
}
string key = str;
int num10 = 1;
while (true)
{
if (!this.InstanceNameTable.ContainsKey(key))
{
this.InstanceNameTable[key] = m;
break;
}
key = str + "#" + num10.ToString(CultureInfo.InvariantCulture);
num10++;
}
ptr = (IntPtr)(((long)ptr) + perf_instance_definition.ByteLength);
for (int n = 0; n < sampleArray.Length; n++)
{
sampleArray[n].SetInstanceValue(m, ptr);
}
ptr = (IntPtr)(((long)ptr) + Marshal.ReadInt32(ptr));
}
}
}
}