/// <summary>
/// Removes the counter (category) from the system
/// </summary>
public static void Delete(string categoryName)
{
CheckValidCategory(categoryName);
string machineName = ".";
categoryName = categoryName.ToLowerInvariant();
Mutex mutex = null;
try
{
NetFrameworkUtils.EnterMutex(PerfMutexName, ref mutex);
if (!PerformanceCounterLib.IsCustomCategory(machineName, categoryName))
{
throw new InvalidOperationException(SR.CantDeleteCategory);
}
SharedPerformanceCounter.RemoveAllInstances(categoryName);
PerformanceCounterLib.UnregisterCategory(categoryName);
PerformanceCounterLib.CloseAllLibraries();
}
finally
{
if (mutex != null)
{
mutex.ReleaseMutex();
mutex.Close();
}
}
}
public static void Delete(string categoryName)
{
CheckValidCategory(categoryName);
string machineName = ".";
new PerformanceCounterPermission(PerformanceCounterPermissionAccess.Administer, machineName, categoryName).Demand();
SharedUtils.CheckNtEnvironment();
categoryName = categoryName.ToLower(CultureInfo.InvariantCulture);
Mutex mutex = null;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
SharedUtils.EnterMutex("netfxperf.1.0", ref mutex);
if (!PerformanceCounterLib.IsCustomCategory(machineName, categoryName))
{
throw new InvalidOperationException(SR.GetString("CantDeleteCategory"));
}
SharedPerformanceCounter.RemoveAllInstances(categoryName);
PerformanceCounterLib.UnregisterCategory(categoryName);
PerformanceCounterLib.CloseAllLibraries();
}
finally
{
if (mutex != null)
{
mutex.ReleaseMutex();
mutex.Close();
}
}
}
/// <include file='doc\PerformanceCounter.uex' path='docs/doc[@for="PerformanceCounter.Close"]/*' />
/// <devdoc>
/// Frees all the resources allocated by this counter
/// </devdoc>
public void Close()
{
this.helpMsg = null;
this.oldSample = CounterSample.Empty;
this.sharedCounter = null;
this.initialized = false;
}
/// <summary>
/// Frees all the resources allocated by this counter
/// </summary>
public void Close()
{
_helpMsg = null;
_oldSample = CounterSample.Empty;
_sharedCounter = null;
_initialized = false;
_counterType = -1;
}
/// <include file='doc\PerformanceCounter.uex' path='docs/doc[@for="PerformanceCounter.RemoveInstance"]/*' />
/// <devdoc>
/// Removes this counter instance from the shared memory
/// </devdoc>
public void RemoveInstance()
{
if (ReadOnly)
{
throw new InvalidOperationException(SR.GetString(SR.ReadOnlyRemoveInstance));
}
Initialize();
SharedPerformanceCounter.RemoveInstance(this.categoryName.ToLower(CultureInfo.InvariantCulture), this.instanceName.ToLower(CultureInfo.InvariantCulture));
}
/// <include file='doc\PerformanceCounter.uex' path='docs/doc[@for="PerformanceCounter.Initialize"]/*' />
/// <devdoc>
/// Intializes required resources
/// </devdoc>
private void Initialize()
{
if (!initialized && !DesignMode)
{
lock (this) {
if (!initialized)
{
if (this.categoryName == String.Empty)
{
throw new InvalidOperationException(SR.GetString(SR.CategoryNameMissing));
}
if (this.counterName == String.Empty)
{
throw new InvalidOperationException(SR.GetString(SR.CounterNameMissing));
}
if (this.ReadOnly)
{
PerformanceCounterPermission permission = new PerformanceCounterPermission(
PerformanceCounterPermissionAccess.Browse, this.machineName, this.categoryName);
permission.Demand();
if (!PerformanceCounterLib.CounterExists(machineName, categoryName, counterName))
{
throw new InvalidOperationException(SR.GetString(SR.CounterExists, categoryName, counterName));
}
this.initialized = true;
}
else
{
PerformanceCounterPermission permission = new PerformanceCounterPermission(PerformanceCounterPermissionAccess.Instrument, this.machineName, this.categoryName);
permission.Demand();
if (this.machineName != "." && String.Compare(this.machineName, PerformanceCounterLib.ComputerName, true, CultureInfo.InvariantCulture) != 0)
{
throw new InvalidOperationException(SR.GetString(SR.RemoteWriting));
}
SharedUtils.CheckNtEnvironment();
if (!PerformanceCounterLib.IsCustomCategory(machineName, categoryName))
{
throw new InvalidOperationException(SR.GetString(SR.NotCustomCounter));
}
this.sharedCounter = new SharedPerformanceCounter(categoryName.ToLower(CultureInfo.InvariantCulture), counterName.ToLower(CultureInfo.InvariantCulture), instanceName.ToLower(CultureInfo.InvariantCulture));
this.initialized = true;
}
}
}
}
}
/// <include file='doc\PerformanceCounterManager.uex' path='docs/doc[@for="PerformanceCounterManager.InitCounterData"]/*' />
/// <devdoc>
/// Initializes the PERF_OBJECT_TYPE structure
/// </devdoc>
/// <internalonly/>
private static IntPtr InitCounterData(IntPtr ptr, int instanceNameHashCode, string instanceName, ObjectData data)
{
NativeMethods.PERF_COUNTER_BLOCK counterBlock = new NativeMethods.PERF_COUNTER_BLOCK();
IntPtr startPtr = ptr;
ptr = (IntPtr)((long)ptr + Marshal.SizeOf(typeof(NativeMethods.PERF_COUNTER_BLOCK)));
for (int index = 0; index < data.CounterNameHashCodes.Length; ++index)
{
long counterValue = SharedPerformanceCounter.GetCounterValue(data.CategoryNameHashCode, data.CategoryName,
data.CounterNameHashCodes[index], data.CounterNames[index],
instanceNameHashCode, instanceName);
if (((data.CounterTypes[index] & NativeMethods.PERF_SIZE_LARGE) != 0) || (data.CounterTypes[index] == NativeMethods.PERF_AVERAGE_TIMER))
{
LARGE_COUNTER_DATA counterData = new LARGE_COUNTER_DATA();
counterData.value = counterValue;
Marshal.StructureToPtr(counterData, ptr, false);
ptr = (IntPtr)((long)ptr + Marshal.SizeOf(typeof(LARGE_COUNTER_DATA)));
}
else // Must be DWORD size
{
DWORD_COUNTER_DATA counterData = new DWORD_COUNTER_DATA();
counterData.value = (int)counterValue;
Marshal.StructureToPtr(counterData, ptr, false);
ptr = (IntPtr)((long)ptr + Marshal.SizeOf(typeof(DWORD_COUNTER_DATA)));
}
}
// Make sure our data block is 8-byte aligned.
int diff = ((int)((long)ptr - (long)startPtr) % 8);
// Null out block (because our data is either 32 or 64 bits, at most we'll need to zero out 4 bytes).
if (diff != 0)
{
Marshal.WriteInt32(ptr, 0);
ptr = (IntPtr)((long)ptr + 4);
}
counterBlock.ByteLength = (int)((long)ptr - (long)startPtr);
Marshal.StructureToPtr(counterBlock, startPtr, false);
return(ptr);
}
/// <include file='doc\PerformanceCounterManager.uex' path='docs/doc[@for="PerformanceCounterManager.CreateDataForObject"]/*' />
/// <devdoc>
/// Prepares data for a single performance object (category)
/// </devdoc>
/// <internalonly/>
private IntPtr CreateDataForObject(int objId, IntPtr ptr)
{
IntPtr startPtr = ptr;
int numInstances = NativeMethods.PERF_NO_INSTANCES;
ObjectData data = (ObjectData)perfObjects[objId];
// Init the PerfObjectType later, just skip over it for now.
ptr = (IntPtr)((long)ptr + Marshal.SizeOf(typeof(NativeMethods.PERF_OBJECT_TYPE)));
// Start the counter offset at 4 to skip over the counter block size
int nextCounterOffset = 4;
for (int i = 0; i < data.CounterNameHashCodes.Length; i++)
{
nextCounterOffset += InitCounterDefinition(ptr, i, data, nextCounterOffset);
ptr = (IntPtr)((long)ptr + Marshal.SizeOf(typeof(NativeMethods.PERF_COUNTER_DEFINITION)));
}
// now ptr points at the begining of the instances block or counter block (for global counter)
string[] instanceNames = SharedPerformanceCounter.GetInstanceNames(data.CategoryNameHashCode, data.CategoryName);
if (instanceNames.Length == 0)
{
ptr = InitCounterData(ptr, SharedPerformanceCounter.SingleInstanceHashCode, SharedPerformanceCounter.SingleInstanceName, data);
}
else
{
for (int index = 0; index < instanceNames.Length; ++index)
{
ptr = InitInstanceDefinition(ptr, 0, 0, NativeMethods.PERF_NO_UNIQUE_ID, instanceNames[index]);
string instanceName = instanceNames[index].ToLower(CultureInfo.InvariantCulture);
ptr = InitCounterData(ptr, instanceName.GetHashCode(), instanceName, data);
}
// update instance count
numInstances = instanceNames.Length;
}
// update arguments for return
InitPerfObjectType(startPtr, data, numInstances, (int)((long)ptr - (long)startPtr));
return(ptr);
}
/// <include file='doc\PerformanceCounterManager.uex' path='docs/doc[@for="PerformanceCounterManager.SpaceRequired"]/*' />
/// <devdoc>
/// Returns a size in bytes of the space required to pass all requested
/// performance data
/// </devdoc>
/// <internalonly/>
private int GetSpaceRequired(int objectId)
{
int totalSize = 0;
ObjectData data = (ObjectData)perfObjects[objectId];
int numberOfInstances = SharedPerformanceCounter.GetNumberOfInstances(data.CategoryNameHashCode, data.CategoryName);
totalSize += Marshal.SizeOf(typeof(NativeMethods.PERF_OBJECT_TYPE));
totalSize += (data.CounterNameHashCodes.Length * Marshal.SizeOf(typeof(NativeMethods.PERF_COUNTER_DEFINITION)));
if (numberOfInstances == 0)
{
totalSize += (data.CounterNameHashCodes.Length * NativeMethods.LARGE_INTEGER_SIZE) + NativeMethods.DWORD_SIZE;
}
else
{
int instanceSize = Marshal.SizeOf(typeof(NativeMethods.PERF_INSTANCE_DEFINITION)) + 2 * (MAX_SIZEOF_INSTANCE_NAME + 1)
+ (data.CounterNameHashCodes.Length * NativeMethods.LARGE_INTEGER_SIZE) + NativeMethods.DWORD_SIZE;
totalSize += numberOfInstances * instanceSize;
}
return(totalSize);
}
private void InitializeImpl()
{
bool lockTaken = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
Monitor.Enter(this.InstanceLockObject, ref lockTaken);
if (!this.initialized)
{
string categoryName = this.categoryName;
string machineName = this.machineName;
if (categoryName == string.Empty)
{
throw new InvalidOperationException(SR.GetString("CategoryNameMissing"));
}
if (this.counterName == string.Empty)
{
throw new InvalidOperationException(SR.GetString("CounterNameMissing"));
}
if (this.ReadOnly)
{
new PerformanceCounterPermission(PerformanceCounterPermissionAccess.Browse, machineName, categoryName).Demand();
if (!PerformanceCounterLib.CounterExists(machineName, categoryName, this.counterName))
{
throw new InvalidOperationException(SR.GetString("CounterExists", new object[] { categoryName, this.counterName }));
}
PerformanceCounterCategoryType categoryType = PerformanceCounterLib.GetCategoryType(machineName, categoryName);
if (categoryType == PerformanceCounterCategoryType.MultiInstance)
{
if (string.IsNullOrEmpty(this.instanceName))
{
throw new InvalidOperationException(SR.GetString("MultiInstanceOnly", new object[] { categoryName }));
}
}
else if ((categoryType == PerformanceCounterCategoryType.SingleInstance) && !string.IsNullOrEmpty(this.instanceName))
{
throw new InvalidOperationException(SR.GetString("SingleInstanceOnly", new object[] { categoryName }));
}
if (this.instanceLifetime != PerformanceCounterInstanceLifetime.Global)
{
throw new InvalidOperationException(SR.GetString("InstanceLifetimeProcessonReadOnly"));
}
this.initialized = true;
}
else
{
new PerformanceCounterPermission(PerformanceCounterPermissionAccess.Write, machineName, categoryName).Demand();
if ((machineName != ".") && (string.Compare(machineName, PerformanceCounterLib.ComputerName, StringComparison.OrdinalIgnoreCase) != 0))
{
throw new InvalidOperationException(SR.GetString("RemoteWriting"));
}
SharedUtils.CheckNtEnvironment();
if (!PerformanceCounterLib.IsCustomCategory(machineName, categoryName))
{
throw new InvalidOperationException(SR.GetString("NotCustomCounter"));
}
PerformanceCounterCategoryType type2 = PerformanceCounterLib.GetCategoryType(machineName, categoryName);
if (type2 == PerformanceCounterCategoryType.MultiInstance)
{
if (string.IsNullOrEmpty(this.instanceName))
{
throw new InvalidOperationException(SR.GetString("MultiInstanceOnly", new object[] { categoryName }));
}
}
else if ((type2 == PerformanceCounterCategoryType.SingleInstance) && !string.IsNullOrEmpty(this.instanceName))
{
throw new InvalidOperationException(SR.GetString("SingleInstanceOnly", new object[] { categoryName }));
}
if (string.IsNullOrEmpty(this.instanceName) && (this.InstanceLifetime == PerformanceCounterInstanceLifetime.Process))
{
throw new InvalidOperationException(SR.GetString("InstanceLifetimeProcessforSingleInstance"));
}
this.sharedCounter = new SharedPerformanceCounter(categoryName.ToLower(CultureInfo.InvariantCulture), this.counterName.ToLower(CultureInfo.InvariantCulture), this.instanceName.ToLower(CultureInfo.InvariantCulture), this.instanceLifetime);
this.initialized = true;
}
}
}
finally
{
if (lockTaken)
{
Monitor.Exit(this.InstanceLockObject);
}
}
}
/// <summary>
/// Intializes required resources
/// </summary>
private void InitializeImpl()
{
bool tookLock = false;
try
{
Monitor.Enter(InstanceLockObject, ref tookLock);
if (!_initialized)
{
string currentCategoryName = _categoryName;
string currentMachineName = _machineName;
if (currentCategoryName.Length == 0)
{
throw new InvalidOperationException(SR.CategoryNameMissing);
}
if (_counterName.Length == 0)
{
throw new InvalidOperationException(SR.CounterNameMissing);
}
if (ReadOnly)
{
if (!PerformanceCounterLib.CounterExists(currentMachineName, currentCategoryName, _counterName))
{
throw new InvalidOperationException(SR.Format(SR.CounterExists, currentCategoryName, _counterName));
}
PerformanceCounterCategoryType categoryType = PerformanceCounterLib.GetCategoryType(currentMachineName, currentCategoryName);
if (categoryType == PerformanceCounterCategoryType.MultiInstance)
{
if (string.IsNullOrEmpty(_instanceName))
{
throw new InvalidOperationException(SR.Format(SR.MultiInstanceOnly, currentCategoryName));
}
}
else if (categoryType == PerformanceCounterCategoryType.SingleInstance)
{
if (!string.IsNullOrEmpty(_instanceName))
{
throw new InvalidOperationException(SR.Format(SR.SingleInstanceOnly, currentCategoryName));
}
}
if (_instanceLifetime != PerformanceCounterInstanceLifetime.Global)
{
throw new InvalidOperationException(SR.InstanceLifetimeProcessonReadOnly);
}
_initialized = true;
}
else
{
if (currentMachineName != "." && !string.Equals(currentMachineName, PerformanceCounterLib.ComputerName, StringComparison.OrdinalIgnoreCase))
{
throw new InvalidOperationException(SR.RemoteWriting);
}
if (!PerformanceCounterLib.IsCustomCategory(currentMachineName, currentCategoryName))
{
throw new InvalidOperationException(SR.NotCustomCounter);
}
// check category type
PerformanceCounterCategoryType categoryType = PerformanceCounterLib.GetCategoryType(currentMachineName, currentCategoryName);
if (categoryType == PerformanceCounterCategoryType.MultiInstance)
{
if (string.IsNullOrEmpty(_instanceName))
{
throw new InvalidOperationException(SR.Format(SR.MultiInstanceOnly, currentCategoryName));
}
}
else if (categoryType == PerformanceCounterCategoryType.SingleInstance)
{
if (!string.IsNullOrEmpty(_instanceName))
{
throw new InvalidOperationException(SR.Format(SR.SingleInstanceOnly, currentCategoryName));
}
}
if (string.IsNullOrEmpty(_instanceName) && InstanceLifetime == PerformanceCounterInstanceLifetime.Process)
{
throw new InvalidOperationException(SR.InstanceLifetimeProcessforSingleInstance);
}
_sharedCounter = new SharedPerformanceCounter(currentCategoryName.ToLowerInvariant(), _counterName.ToLowerInvariant(), _instanceName.ToLowerInvariant(), _instanceLifetime);
_initialized = true;
}
}
}
finally
{
if (tookLock)
{
Monitor.Exit(InstanceLockObject);
}
}
}
public void Close()
{
this.helpMsg = null;
this.oldSample = CounterSample.Empty;
this.sharedCounter = null;
this.initialized = false;
this.counterType = -1;
}
private void InitializeImpl()
{
bool lockTaken = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
Monitor.Enter(this.InstanceLockObject, ref lockTaken);
if (!this.initialized)
{
string categoryName = this.categoryName;
string machineName = this.machineName;
if (categoryName == string.Empty)
{
throw new InvalidOperationException(SR.GetString("CategoryNameMissing"));
}
if (this.counterName == string.Empty)
{
throw new InvalidOperationException(SR.GetString("CounterNameMissing"));
}
if (this.ReadOnly)
{
new PerformanceCounterPermission(PerformanceCounterPermissionAccess.Browse, machineName, categoryName).Demand();
if (!PerformanceCounterLib.CounterExists(machineName, categoryName, this.counterName))
{
throw new InvalidOperationException(SR.GetString("CounterExists", new object[] { categoryName, this.counterName }));
}
PerformanceCounterCategoryType categoryType = PerformanceCounterLib.GetCategoryType(machineName, categoryName);
if (categoryType == PerformanceCounterCategoryType.MultiInstance)
{
if (string.IsNullOrEmpty(this.instanceName))
{
throw new InvalidOperationException(SR.GetString("MultiInstanceOnly", new object[] { categoryName }));
}
}
else if ((categoryType == PerformanceCounterCategoryType.SingleInstance) && !string.IsNullOrEmpty(this.instanceName))
{
throw new InvalidOperationException(SR.GetString("SingleInstanceOnly", new object[] { categoryName }));
}
if (this.instanceLifetime != PerformanceCounterInstanceLifetime.Global)
{
throw new InvalidOperationException(SR.GetString("InstanceLifetimeProcessonReadOnly"));
}
this.initialized = true;
}
else
{
new PerformanceCounterPermission(PerformanceCounterPermissionAccess.Write, machineName, categoryName).Demand();
if ((machineName != ".") && (string.Compare(machineName, PerformanceCounterLib.ComputerName, StringComparison.OrdinalIgnoreCase) != 0))
{
throw new InvalidOperationException(SR.GetString("RemoteWriting"));
}
SharedUtils.CheckNtEnvironment();
if (!PerformanceCounterLib.IsCustomCategory(machineName, categoryName))
{
throw new InvalidOperationException(SR.GetString("NotCustomCounter"));
}
PerformanceCounterCategoryType type2 = PerformanceCounterLib.GetCategoryType(machineName, categoryName);
if (type2 == PerformanceCounterCategoryType.MultiInstance)
{
if (string.IsNullOrEmpty(this.instanceName))
{
throw new InvalidOperationException(SR.GetString("MultiInstanceOnly", new object[] { categoryName }));
}
}
else if ((type2 == PerformanceCounterCategoryType.SingleInstance) && !string.IsNullOrEmpty(this.instanceName))
{
throw new InvalidOperationException(SR.GetString("SingleInstanceOnly", new object[] { categoryName }));
}
if (string.IsNullOrEmpty(this.instanceName) && (this.InstanceLifetime == PerformanceCounterInstanceLifetime.Process))
{
throw new InvalidOperationException(SR.GetString("InstanceLifetimeProcessforSingleInstance"));
}
this.sharedCounter = new SharedPerformanceCounter(categoryName.ToLower(CultureInfo.InvariantCulture), this.counterName.ToLower(CultureInfo.InvariantCulture), this.instanceName.ToLower(CultureInfo.InvariantCulture), this.instanceLifetime);
this.initialized = true;
}
}
}
finally
{
if (lockTaken)
{
Monitor.Exit(this.InstanceLockObject);
}
}
}
/// <devdoc>
/// Intializes required resources
/// </devdoc>
//[ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)]
private void InitializeImpl()
{
bool tookLock = false;
RuntimeHelpers.PrepareConstrainedRegions();
try {
Monitor.Enter(InstanceLockObject, ref tookLock);
if (!initialized)
{
string currentCategoryName = categoryName;
string currentMachineName = machineName;
if (currentCategoryName == String.Empty)
{
throw new InvalidOperationException(SR.GetString(SR.CategoryNameMissing));
}
if (this.counterName == String.Empty)
{
throw new InvalidOperationException(SR.GetString(SR.CounterNameMissing));
}
if (this.ReadOnly)
{
PerformanceCounterPermission permission = new PerformanceCounterPermission(PerformanceCounterPermissionAccess.Read, currentMachineName, currentCategoryName);
permission.Demand();
if (!PerformanceCounterLib.CounterExists(currentMachineName, currentCategoryName, counterName))
{
throw new InvalidOperationException(SR.GetString(SR.CounterExists, currentCategoryName, counterName));
}
PerformanceCounterCategoryType categoryType = PerformanceCounterLib.GetCategoryType(currentMachineName, currentCategoryName);
if (categoryType == PerformanceCounterCategoryType.MultiInstance)
{
if (String.IsNullOrEmpty(instanceName))
{
throw new InvalidOperationException(SR.GetString(SR.MultiInstanceOnly, currentCategoryName));
}
}
else if (categoryType == PerformanceCounterCategoryType.SingleInstance)
{
if (!String.IsNullOrEmpty(instanceName))
{
throw new InvalidOperationException(SR.GetString(SR.SingleInstanceOnly, currentCategoryName));
}
}
if (instanceLifetime != PerformanceCounterInstanceLifetime.Global)
{
throw new InvalidOperationException(SR.GetString(SR.InstanceLifetimeProcessonReadOnly));
}
this.initialized = true;
}
else
{
PerformanceCounterPermission permission = new PerformanceCounterPermission(PerformanceCounterPermissionAccess.Write, currentMachineName, currentCategoryName);
permission.Demand();
if (currentMachineName != "." && String.Compare(currentMachineName, PerformanceCounterLib.ComputerName, StringComparison.OrdinalIgnoreCase) != 0)
{
throw new InvalidOperationException(SR.GetString(SR.RemoteWriting));
}
SharedUtils.CheckNtEnvironment();
if (!PerformanceCounterLib.IsCustomCategory(currentMachineName, currentCategoryName))
{
throw new InvalidOperationException(SR.GetString(SR.NotCustomCounter));
}
// check category type
PerformanceCounterCategoryType categoryType = PerformanceCounterLib.GetCategoryType(currentMachineName, currentCategoryName);
if (categoryType == PerformanceCounterCategoryType.MultiInstance)
{
if (String.IsNullOrEmpty(instanceName))
{
throw new InvalidOperationException(SR.GetString(SR.MultiInstanceOnly, currentCategoryName));
}
}
else if (categoryType == PerformanceCounterCategoryType.SingleInstance)
{
if (!String.IsNullOrEmpty(instanceName))
{
throw new InvalidOperationException(SR.GetString(SR.SingleInstanceOnly, currentCategoryName));
}
}
if (String.IsNullOrEmpty(instanceName) && InstanceLifetime == PerformanceCounterInstanceLifetime.Process)
{
throw new InvalidOperationException(SR.GetString(SR.InstanceLifetimeProcessforSingleInstance));
}
this.sharedCounter = new SharedPerformanceCounter(currentCategoryName.ToLower(CultureInfo.InvariantCulture), counterName.ToLower(CultureInfo.InvariantCulture), instanceName.ToLower(CultureInfo.InvariantCulture), instanceLifetime);
this.initialized = true;
}
}
} finally {
if (tookLock)
{
Monitor.Exit(InstanceLockObject);
}
}
}
internal unsafe static void RemoveAllInstances(string categoryName) {
SharedPerformanceCounter spc = new SharedPerformanceCounter(categoryName, null, null);
spc.RemoveAllInstances();
RemoveCategoryData(categoryName);
}
/// <devdoc>
/// Intializes required resources
/// </devdoc>
//[ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)]
private void InitializeImpl() {
bool tookLock = false;
RuntimeHelpers.PrepareConstrainedRegions();
try {
Monitor.Enter(InstanceLockObject, ref tookLock);
if (!initialized) {
string currentCategoryName = categoryName;
string currentMachineName = machineName;
if (currentCategoryName == String.Empty)
throw new InvalidOperationException(SR.GetString(SR.CategoryNameMissing));
if (this.counterName == String.Empty)
throw new InvalidOperationException(SR.GetString(SR.CounterNameMissing));
if (this.ReadOnly) {
PerformanceCounterPermission permission = new PerformanceCounterPermission(PerformanceCounterPermissionAccess.Read, currentMachineName, currentCategoryName);
permission.Demand();
if (!PerformanceCounterLib.CounterExists(currentMachineName, currentCategoryName, counterName))
throw new InvalidOperationException(SR.GetString(SR.CounterExists, currentCategoryName, counterName));
PerformanceCounterCategoryType categoryType = PerformanceCounterLib.GetCategoryType(currentMachineName, currentCategoryName);
if (categoryType == PerformanceCounterCategoryType.MultiInstance) {
if (String.IsNullOrEmpty(instanceName))
throw new InvalidOperationException(SR.GetString(SR.MultiInstanceOnly, currentCategoryName));
} else if (categoryType == PerformanceCounterCategoryType.SingleInstance) {
if (!String.IsNullOrEmpty(instanceName))
throw new InvalidOperationException(SR.GetString(SR.SingleInstanceOnly, currentCategoryName));
}
if (instanceLifetime != PerformanceCounterInstanceLifetime.Global)
throw new InvalidOperationException(SR.GetString(SR.InstanceLifetimeProcessonReadOnly));
this.initialized = true;
} else {
PerformanceCounterPermission permission = new PerformanceCounterPermission(PerformanceCounterPermissionAccess.Write, currentMachineName, currentCategoryName);
permission.Demand();
if (currentMachineName != "." && String.Compare(currentMachineName, PerformanceCounterLib.ComputerName, StringComparison.OrdinalIgnoreCase) != 0)
throw new InvalidOperationException(SR.GetString(SR.RemoteWriting));
SharedUtils.CheckNtEnvironment();
if (!PerformanceCounterLib.IsCustomCategory(currentMachineName, currentCategoryName))
throw new InvalidOperationException(SR.GetString(SR.NotCustomCounter));
// check category type
PerformanceCounterCategoryType categoryType = PerformanceCounterLib.GetCategoryType(currentMachineName, currentCategoryName);
if (categoryType == PerformanceCounterCategoryType.MultiInstance) {
if (String.IsNullOrEmpty(instanceName))
throw new InvalidOperationException(SR.GetString(SR.MultiInstanceOnly, currentCategoryName));
} else if (categoryType == PerformanceCounterCategoryType.SingleInstance) {
if (!String.IsNullOrEmpty(instanceName))
throw new InvalidOperationException(SR.GetString(SR.SingleInstanceOnly, currentCategoryName));
}
if (String.IsNullOrEmpty(instanceName) && InstanceLifetime == PerformanceCounterInstanceLifetime.Process)
throw new InvalidOperationException(SR.GetString(SR.InstanceLifetimeProcessforSingleInstance));
this.sharedCounter = new SharedPerformanceCounter(currentCategoryName.ToLower(CultureInfo.InvariantCulture), counterName.ToLower(CultureInfo.InvariantCulture), instanceName.ToLower(CultureInfo.InvariantCulture), instanceLifetime);
this.initialized = true;
}
}
} finally {
if (tookLock)
Monitor.Exit(InstanceLockObject);
}
}
