Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / DataOracleClient / System / Data / OracleClient / TempEnvironment.cs / 1 / TempEnvironment.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace System.Data.OracleClient { using System; using System.Diagnostics; using System.Security; using System.Security.Permissions; //--------------------------------------------------------------------- // TempEnvironment // // Temporary Environment, used to get temporary handles so we don't // have to pass the environment handle everywhere. // sealed internal class TempEnvironment { static private OciEnvironmentHandle environmentHandle; static private OciErrorHandle availableErrorHandle; // static private volatile bool isInitialized; static private object locked = new object(); private TempEnvironment() { } static void Initialize() { lock (locked) { if (!isInitialized) { bool unicode = false; OCI.MODE environmentMode = (OCI.MODE.OCI_THREADED | OCI.MODE.OCI_OBJECT); // NOTE: cannot be NO_MUTEX because we might be multi-threaded. OCI.DetermineClientVersion(); //1 #if NEVER if (OCI.ClientVersionAtLeastOracle9i) { unicode = true; environmentMode |= OCI.MODE.OCI_UTF16; } #endif //0 environmentHandle = new OciEnvironmentHandle(environmentMode, unicode); availableErrorHandle = new OciErrorHandle(environmentHandle); isInitialized = true; } } } static internal OciErrorHandle GetErrorHandle() { OracleConnection.VerifyExecutePermission(); if (!isInitialized) { Initialize(); } return availableErrorHandle; // } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace System.Data.OracleClient { using System; using System.Diagnostics; using System.Security; using System.Security.Permissions; //--------------------------------------------------------------------- // TempEnvironment // // Temporary Environment, used to get temporary handles so we don't // have to pass the environment handle everywhere. // sealed internal class TempEnvironment { static private OciEnvironmentHandle environmentHandle; static private OciErrorHandle availableErrorHandle; // static private volatile bool isInitialized; static private object locked = new object(); private TempEnvironment() { } static void Initialize() { lock (locked) { if (!isInitialized) { bool unicode = false; OCI.MODE environmentMode = (OCI.MODE.OCI_THREADED | OCI.MODE.OCI_OBJECT); // NOTE: cannot be NO_MUTEX because we might be multi-threaded. OCI.DetermineClientVersion(); //1 #if NEVER if (OCI.ClientVersionAtLeastOracle9i) { unicode = true; environmentMode |= OCI.MODE.OCI_UTF16; } #endif //0 environmentHandle = new OciEnvironmentHandle(environmentMode, unicode); availableErrorHandle = new OciErrorHandle(environmentHandle); isInitialized = true; } } } static internal OciErrorHandle GetErrorHandle() { OracleConnection.VerifyExecutePermission(); if (!isInitialized) { Initialize(); } return availableErrorHandle; // } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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