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GetSingleInstanceCounter
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| [DllImport("pdh.dll", SetLastError = true, CharSet = CharSet.Unicode)] | |
| static extern UInt32 PdhLookupPerfNameByIndex(string szMachineName, uint dwNameIndex, StringBuilder szNameBuffer, ref uint pcchNameBufferSize); | |
| PerformanceCounter GetSingleInstanceCounter(string englishCategoryName, string englishCounterName) | |
| { | |
| // Try first with english names | |
| try | |
| { | |
| return new PerformanceCounter(englishCategoryName, englishCounterName); | |
| } | |
| catch { } | |
| // Get list of counters | |
| const string perfCountersKey = @"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Perflib\009"; | |
| var englishNames = Registry.GetValue(perfCountersKey, "Counter", null) as string[]; | |
| // Get localized category name | |
| var localizedCategoryId = FindNameId(englishNames, englishCategoryName); | |
| var localizedCategoryName = GetNameByIndex(localizedCategoryId); | |
| // Get localized counter name | |
| var localizedCounterId = FindNameId(englishNames, englishCounterName); | |
| var localizedCounterName = GetNameByIndex(localizedCounterId); | |
| return GetCounterIfExists(localizedCategoryName, localizedCounterName) ?? | |
| GetCounterIfExists(localizedCategoryName, englishCounterName) ?? | |
| GetCounterIfExists(englishCategoryName, localizedCounterName); | |
| } | |
| PerformanceCounter GetCounterIfExists(string categoryName, string counterName) | |
| { | |
| try | |
| { | |
| return new PerformanceCounter(categoryName, counterName); | |
| } | |
| catch | |
| { | |
| return null; | |
| } | |
| } | |
| int FindNameId(string[] englishNames, string name) | |
| { | |
| // englishNames contains alternately id and name, that's why I check only odd lines | |
| for (int i = 1; i < englishNames.Length; i += 2) | |
| { | |
| if (englishNames[i] == name) | |
| { | |
| return Int32.Parse(englishNames[i - 1]); | |
| } | |
| } | |
| return -1; | |
| } | |
| string GetNameByIndex(int id) | |
| { | |
| if (id < 0) | |
| { | |
| return null; | |
| } | |
| var buffer = new StringBuilder(1024); | |
| var bufSize = (uint)buffer.Capacity; | |
| var ret = PdhLookupPerfNameByIndex(null, (uint)id, buffer, ref bufSize); | |
| return ret == 0 && buffer.Length != 0 ? buffer.ToString() : null; | |
| } |
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