本文整理汇总了C#中System.Data.SqlClient.TdsParserStateObject.SendAttention方法的典型用法代码示例。如果您正苦于以下问题：C# TdsParserStateObject.SendAttention方法的具体用法？C# TdsParserStateObject.SendAttention怎么用？C# TdsParserStateObject.SendAttention使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Data.SqlClient.TdsParserStateObject的用法示例。
在下文中一共展示了TdsParserStateObject.SendAttention方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: FailureCleanup
internal void FailureCleanup(TdsParserStateObject stateObj, Exception e)
{
int old_outputPacketNumber = stateObj._outputPacketNumber;
if (stateObj.HasOpenResult)
{ // Need to decrement openResultCount if operation failed.
stateObj.DecrementOpenResultCount();
}
// be sure to wipe out our buffer if we started sending stuff
stateObj.ResetBuffer();
stateObj._outputPacketNumber = 1; // end of message - reset to 1 - per ramas
if (old_outputPacketNumber != 1 && _state == TdsParserState.OpenLoggedIn)
{
Debug.Assert(_connHandler._parserLock.ThreadMayHaveLock(), "Should not be calling into FailureCleanup without first taking the parser lock");
bool originalThreadHasParserLock = _connHandler.ThreadHasParserLockForClose;
try
{
// Need to set this to true such that if we have an error sending\processing the attention, we won't deadlock ourselves
_connHandler.ThreadHasParserLockForClose = true;
// If _outputPacketNumber prior to ResetBuffer was not equal to 1, a packet was already
// sent to the server and so we need to send an attention and process the attention ack.
stateObj.SendAttention();
ProcessAttention(stateObj);
}
finally
{
// Reset the ThreadHasParserLock value incase our caller expects it to be set\not set
_connHandler.ThreadHasParserLockForClose = originalThreadHasParserLock;
}
}
}示例2: ReadSniError
// This method should only be called by ReadSni! If not - it may have problems with timeouts!
private void ReadSniError(TdsParserStateObject stateObj, UInt32 error)
{
if (TdsEnums.SNI_WAIT_TIMEOUT == error)
{
Debug.Assert(_syncOverAsync, "Should never reach here with async on!");
bool fail = false;
if (_internalTimeout)
{ // This is now our second timeout - time to give up.
fail = true;
}
else
{
stateObj._internalTimeout = true;
Debug.Assert(_parser.Connection != null, "SqlConnectionInternalTds handler can not be null at this point.");
AddError(new SqlError(TdsEnums.TIMEOUT_EXPIRED, (byte)0x00, TdsEnums.MIN_ERROR_CLASS, _parser.Server, _parser.Connection.TimeoutErrorInternal.GetErrorMessage(), "", 0, TdsEnums.SNI_WAIT_TIMEOUT));
if (!stateObj._attentionSent)
{
if (stateObj.Parser.State == TdsParserState.OpenLoggedIn)
{
stateObj.SendAttention(mustTakeWriteLock: true);
IntPtr syncReadPacket = IntPtr.Zero;
bool shouldDecrement = false;
try
{
Interlocked.Increment(ref _readingCount);
shouldDecrement = true;
SNIHandle handle = Handle;
if (handle == null)
{
throw ADP.ClosedConnectionError();
}
error = SNINativeMethodWrapper.SNIReadSyncOverAsync(handle, ref syncReadPacket, stateObj.GetTimeoutRemaining());
Interlocked.Decrement(ref _readingCount);
shouldDecrement = false;
if (TdsEnums.SNI_SUCCESS == error)
{
// We will end up letting the run method deal with the expected done:done_attn token stream.
stateObj.ProcessSniPacket(syncReadPacket, 0);
return;
}
else
{
Debug.Assert(IntPtr.Zero == syncReadPacket, "unexpected syncReadPacket without corresponding SNIPacketRelease");
fail = true; // Subsequent read failed, time to give up.
}
}
finally
{
if (shouldDecrement)
{
Interlocked.Decrement(ref _readingCount);
}
if (syncReadPacket != IntPtr.Zero)
{
// Be sure to release packet, otherwise it will be leaked by native.
SNINativeMethodWrapper.SNIPacketRelease(syncReadPacket);
}
}
}
else
{
if (_parser._loginWithFailover)
{
// For DbMirroring Failover during login, never break the connection, just close the TdsParser
_parser.Disconnect();
}
else if ((_parser.State == TdsParserState.OpenNotLoggedIn) && (_parser.Connection.ConnectionOptions.MultiSubnetFailover))
{
// For MultiSubnet Failover during login, never break the connection, just close the TdsParser
_parser.Disconnect();
}
else
fail = true; // We aren't yet logged in - just fail.
}
}
}
if (fail)
{
_parser.State = TdsParserState.Broken; // We failed subsequent read, we have to quit!
_parser.Connection.BreakConnection();
}
}
else
{
// Caution: ProcessSNIError always returns a fatal error!
AddError(_parser.ProcessSNIError(stateObj));
}
ThrowExceptionAndWarning();
//.........这里部分代码省略.........
示例3: FailureCleanup
internal void FailureCleanup(TdsParserStateObject stateObj, Exception e) {
int old_outputPacketNumber = stateObj._outputPacketNumber;
if (Bid.TraceOn) {
Bid.Trace("<sc.TdsParser.FailureCleanup|ERR> Exception caught on ExecuteXXX: '%ls' \n", e.ToString());
}
if (stateObj.HasOpenResult) { // SQL BU DT 383773 - need to decrement openResultCount if operation failed.
stateObj.DecrementOpenResultCount();
}
// be sure to wipe out our buffer if we started sending stuff
stateObj.ResetBuffer();
stateObj._outputPacketNumber = 1; // end of message - reset to 1 - per ramas
if (old_outputPacketNumber != 1 && _state == TdsParserState.OpenLoggedIn) {
Debug.Assert(_connHandler._parserLock.ThreadMayHaveLock(), "Should not be calling into FailureCleanup without first taking the parser lock");
bool originalThreadHasParserLock = _connHandler.ThreadHasParserLockForClose;
try {
// Dev11 Bug 385286 : ExecuteNonQueryAsync hangs when trying to write a parameter which generates ArgumentException and while handling that exception the server disconnects the connection
// Need to set this to true such that if we have an error sending\processing the attention, we won't deadlock ourselves
_connHandler.ThreadHasParserLockForClose = true;
// If _outputPacketNumber prior to ResetBuffer was not equal to 1, a packet was already
// sent to the server and so we need to send an attention and process the attention ack.
stateObj.SendAttention();
ProcessAttention(stateObj);
}
finally {
// Reset the ThreadHasParserLock value incase our caller expects it to be set\not set
_connHandler.ThreadHasParserLockForClose = originalThreadHasParserLock;
}
}
Bid.Trace("<sc.TdsParser.FailureCleanup|ERR> Exception rethrown. \n");
}示例4: ReadSniError
private void ReadSniError(TdsParserStateObject stateObj, uint error)
{
if (this._parser._fAwaitingPreLogin && (error != 0x102))
{
this._parser._fPreLoginErrorOccurred = true;
return;
}
if (0x102 != error)
{
this._parser.Errors.Add(this._parser.ProcessSNIError(stateObj));
goto Label_011E;
}
bool flag = false;
if (this._internalTimeout)
{
flag = true;
}
else
{
stateObj._internalTimeout = true;
this._parser.Errors.Add(new SqlError(-2, 0, 11, this._parser.Server, SQLMessage.Timeout(), "", 0));
if (!stateObj._attentionSent)
{
if (stateObj.Parser.State == TdsParserState.OpenLoggedIn)
{
stateObj.SendAttention();
IntPtr zero = IntPtr.Zero;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
error = SNINativeMethodWrapper.SNIReadSync(stateObj.Handle, ref zero, TdsParserStaticMethods.GetTimeoutMilliseconds(stateObj.TimeoutTime));
if (error == 0)
{
stateObj.ProcessSniPacket(zero, 0);
return;
}
flag = true;
goto Label_00E1;
}
finally
{
if (zero != IntPtr.Zero)
{
SNINativeMethodWrapper.SNIPacketRelease(zero);
}
}
}
flag = true;
}
}
Label_00E1:
if (flag)
{
this._parser.State = TdsParserState.Broken;
this._parser.Connection.BreakConnection();
}
Label_011E:
this._parser.ThrowExceptionAndWarning();
}示例5: FailureCleanup
internal void FailureCleanup(TdsParserStateObject stateObj, Exception e)
{
int num = stateObj._outputPacketNumber;
if (Bid.TraceOn)
{
Bid.Trace("<sc.TdsParser.FailureCleanup|ERR> Exception caught on ExecuteXXX: '%ls' \n", e.ToString());
}
if (stateObj.HasOpenResult)
{
stateObj.DecrementOpenResultCount();
}
stateObj.ResetBuffer();
stateObj._outputPacketNumber = 1;
if ((num != 1) && (this._state == TdsParserState.OpenLoggedIn))
{
stateObj.SendAttention();
this.ProcessAttention(stateObj);
}
Bid.Trace("<sc.TdsParser.FailureCleanup|ERR> Exception rethrown. \n");
}