Hello group,
I'm trying to develop a proof of concept webservice which asynchronously
calls a function in a DLL. The function raises an event when it is finished,
and works when used as part of a windows form. When I try to hook up the
webservice to the event and call the WS, the CPU goes to 100% and I have to
restart the WWW service.
Does anyone have an idea as to how this can be done ... and if not,
directions to a tall bridge would come in handy.
Thanks in advance,
--
Tim Gallivan
I know I'm a great teacher because when I give a lesson, the person never
comes back. 4 3308
can you describe the flow a bit more?
The webservice - it is an ASMX?
and within the logic behind that ASMX, you do a BeginInvoke() on a delegate
that references your external DLL?
And then you return from the webmethod call. Is that right?
Or,
within the ASMX, you do BeginInvoke() on the delegate (eventually getting to
your external DLL) and then... what?
"Tim Gallivan" <no************ **********@edu. gov.on.ca> wrote in message
news:Oe******** ******@TK2MSFTN GP11.phx.gbl... Hello group,
I'm trying to develop a proof of concept webservice which asynchronously calls a function in a DLL. The function raises an event when it is
finished, and works when used as part of a windows form. When I try to hook up the webservice to the event and call the WS, the CPU goes to 100% and I have
to restart the WWW service.
Does anyone have an idea as to how this can be done ... and if not, directions to a tall bridge would come in handy.
Thanks in advance,
-- Tim Gallivan I know I'm a great teacher because when I give a lesson, the person never comes back.
Dino,
Thanks for responding.
Yes the webservice is an ASMX. The webservice needs to return a dataset
(which is returned by the call to the DLL in ClassA). I haven't been able to
figure out how to do it. I haven't been using BeginInvoke because I don't
know how to ... I have been using BeginDoAsyncTes t and EndDoAsyncTest in my
client.
Any help would be greatly appreciated, source code is below. Thanks in
advance, Tim
private DataSet dsRR;
[WebMethod]
public DataSet DoAsyncTest(Str ing sHost)
{
ClassA rr = new ClassA(sHost);
rr.ClassAComple te += new ClassA.ClassAEv entHandler(Text Handler);
rr.Start();
while(dsRR.Tabl es.Count == 0)
{
System.Threadin g.Thread.Sleep( 0);
}
return dsRR;
}
private void TextHandler(obj ect sender, RemoteRR.ClassA EventArgs e)
{
DataSet dsResults = new DataSet();
DataTable dtResults = dsResults.Table s.Add("Results" );
DataColumn dc = dtResults.Colum ns.Add("CallId" ,typeof(Int64)) ;
dtResults.Colum ns.Add("Error", typeof(Int16));
dtResults.Colum ns.Add("Results ",typeof(String ));
dtResults.Colum ns.Add("HTML",t ypeof(String));
dtResults.Colum ns.Add("Error", typeof(String)) ;
DataRow dr = dtResults.NewRo w();
dr["CallId"] = 1;
dr["Error"] = 0;
dr["Results"] = e.TimeToRespons e.ToString()+" "+e.TimeToFinis h.ToString();
dr["HTML"] = e.PageHTML.ToSt ring();
dr["Error"] = e.ErrorMessage. ToString();
dtResults.Rows. Add(dr);
dtResults.Accep tChanges();
dsRR = dsResults.Copy( );
}
--
Tim Gallivan
I know I'm a great teacher because when I give a lesson, the person never
comes back.
"Dino Chiesa [Microsoft]" <di****@online. microsoft.com> wrote in message
news:eS******** ******@TK2MSFTN GP12.phx.gbl... can you describe the flow a bit more? The webservice - it is an ASMX? and within the logic behind that ASMX, you do a BeginInvoke() on a
delegate that references your external DLL? And then you return from the webmethod call. Is that right?
Or, within the ASMX, you do BeginInvoke() on the delegate (eventually getting
to your external DLL) and then... what? "Tim Gallivan" <no************ **********@edu. gov.on.ca> wrote in message news:Oe******** ******@TK2MSFTN GP11.phx.gbl... Hello group,
I'm trying to develop a proof of concept webservice which asynchronously calls a function in a DLL. The function raises an event when it is finished, and works when used as part of a windows form. When I try to hook up the webservice to the event and call the WS, the CPU goes to 100% and I have to restart the WWW service.
Does anyone have an idea as to how this can be done ... and if not, directions to a tall bridge would come in handy.
Thanks in advance,
-- Tim Gallivan I know I'm a great teacher because when I give a lesson, the person
never comes back.
it sure looks like you have a tight loop in the webservice, waiting for a
response from the DLL.
Rather than loop this way, I would look into WaitHandle and the WaitOne()
call.
For example, this page: http://msdn.microsoft.com/library/en...itOneTopic.asp
....shows how to queue an item to the worker thread pool. You can do this
within the ASMX webmethod.
You may already have support for this in ClassA, I cannot tell.
If you can get a WaitHandle from the ClassA, then just call WaitOne() on
that. (in this case You don't need to use the CLR threadpool. )
-D
"Tim Gallivan" <no************ **********@edu. gov.on.ca> wrote in message
news:Ob******** ******@TK2MSFTN GP12.phx.gbl... Dino,
Thanks for responding. Yes the webservice is an ASMX. The webservice needs to return a dataset (which is returned by the call to the DLL in ClassA). I haven't been able
to figure out how to do it. I haven't been using BeginInvoke because I don't know how to ... I have been using BeginDoAsyncTes t and EndDoAsyncTest in
my client.
Any help would be greatly appreciated, source code is below. Thanks in advance, Tim
private DataSet dsRR;
[WebMethod] public DataSet DoAsyncTest(Str ing sHost) { ClassA rr = new ClassA(sHost); rr.ClassAComple te += new ClassA.ClassAEv entHandler(Text Handler); rr.Start();
while(dsRR.Tabl es.Count == 0) { System.Threadin g.Thread.Sleep( 0); } return dsRR; }
private void TextHandler(obj ect sender, RemoteRR.ClassA EventArgs e) { DataSet dsResults = new DataSet();
DataTable dtResults = dsResults.Table s.Add("Results" ); DataColumn dc = dtResults.Colum ns.Add("CallId" ,typeof(Int64)) ; dtResults.Colum ns.Add("Error", typeof(Int16)); dtResults.Colum ns.Add("Results ",typeof(String )); dtResults.Colum ns.Add("HTML",t ypeof(String)); dtResults.Colum ns.Add("Error", typeof(String)) ;
DataRow dr = dtResults.NewRo w(); dr["CallId"] = 1; dr["Error"] = 0; dr["Results"] = e.TimeToRespons e.ToString()+"
"+e.TimeToFinis h.ToString(); dr["HTML"] = e.PageHTML.ToSt ring(); dr["Error"] = e.ErrorMessage. ToString(); dtResults.Rows. Add(dr); dtResults.Accep tChanges();
dsRR = dsResults.Copy( ); } -- Tim Gallivan I know I'm a great teacher because when I give a lesson, the person never comes back.
"Dino Chiesa [Microsoft]" <di****@online. microsoft.com> wrote in message news:eS******** ******@TK2MSFTN GP12.phx.gbl... can you describe the flow a bit more? The webservice - it is an ASMX? and within the logic behind that ASMX, you do a BeginInvoke() on a delegate that references your external DLL? And then you return from the webmethod call. Is that right?
Or, within the ASMX, you do BeginInvoke() on the delegate (eventually
getting to your external DLL) and then... what? "Tim Gallivan" <no************ **********@edu. gov.on.ca> wrote in message news:Oe******** ******@TK2MSFTN GP11.phx.gbl... Hello group,
I'm trying to develop a proof of concept webservice which
asynchronously calls a function in a DLL. The function raises an event when it is finished, and works when used as part of a windows form. When I try to hook up
the webservice to the event and call the WS, the CPU goes to 100% and I
have to restart the WWW service.
Does anyone have an idea as to how this can be done ... and if not, directions to a tall bridge would come in handy.
Thanks in advance,
-- Tim Gallivan I know I'm a great teacher because when I give a lesson, the person never comes back.
I'm assuming a "tight loop" is a BAD thing. I'll try it your way, Dino.
Thanks for the quick reply,
--
Tim Gallivan
I know I'm a great teacher because when I give a lesson, the person never
comes back.
"Dino Chiesa [Microsoft]" <di****@online. microsoft.com> wrote in message
news:uc******** ******@TK2MSFTN GP12.phx.gbl... it sure looks like you have a tight loop in the webservice, waiting for a response from the DLL. Rather than loop this way, I would look into WaitHandle and the WaitOne() call.
For example, this page: http://msdn.microsoft.com/library/en...itOneTopic.asp ...shows how to queue an item to the worker thread pool. You can do this within the ASMX webmethod.
You may already have support for this in ClassA, I cannot tell. If you can get a WaitHandle from the ClassA, then just call WaitOne() on that. (in this case You don't need to use the CLR threadpool. )
-D
"Tim Gallivan" <no************ **********@edu. gov.on.ca> wrote in message news:Ob******** ******@TK2MSFTN GP12.phx.gbl... Dino,
Thanks for responding. Yes the webservice is an ASMX. The webservice needs to return a dataset (which is returned by the call to the DLL in ClassA). I haven't been
able to figure out how to do it. I haven't been using BeginInvoke because I
don't know how to ... I have been using BeginDoAsyncTes t and EndDoAsyncTest in my client.
Any help would be greatly appreciated, source code is below. Thanks in advance, Tim
private DataSet dsRR;
[WebMethod] public DataSet DoAsyncTest(Str ing sHost) { ClassA rr = new ClassA(sHost); rr.ClassAComple te += new ClassA.ClassAEv entHandler(Text Handler); rr.Start();
while(dsRR.Tabl es.Count == 0) { System.Threadin g.Thread.Sleep( 0); } return dsRR; }
private void TextHandler(obj ect sender, RemoteRR.ClassA EventArgs e) { DataSet dsResults = new DataSet();
DataTable dtResults = dsResults.Table s.Add("Results" ); DataColumn dc = dtResults.Colum ns.Add("CallId" ,typeof(Int64)) ; dtResults.Colum ns.Add("Error", typeof(Int16)); dtResults.Colum ns.Add("Results ",typeof(String )); dtResults.Colum ns.Add("HTML",t ypeof(String)); dtResults.Colum ns.Add("Error", typeof(String)) ;
DataRow dr = dtResults.NewRo w(); dr["CallId"] = 1; dr["Error"] = 0; dr["Results"] = e.TimeToRespons e.ToString()+" "+e.TimeToFinis h.ToString(); dr["HTML"] = e.PageHTML.ToSt ring(); dr["Error"] = e.ErrorMessage. ToString(); dtResults.Rows. Add(dr); dtResults.Accep tChanges();
dsRR = dsResults.Copy( ); } -- Tim Gallivan I know I'm a great teacher because when I give a lesson, the person
never comes back.
"Dino Chiesa [Microsoft]" <di****@online. microsoft.com> wrote in message news:eS******** ******@TK2MSFTN GP12.phx.gbl... can you describe the flow a bit more? The webservice - it is an ASMX? and within the logic behind that ASMX, you do a BeginInvoke() on a delegate that references your external DLL? And then you return from the webmethod call. Is that right?
Or, within the ASMX, you do BeginInvoke() on the delegate (eventually getting to your external DLL) and then... what? "Tim Gallivan" <no************ **********@edu. gov.on.ca> wrote in
message news:Oe******** ******@TK2MSFTN GP11.phx.gbl... > Hello group, > > I'm trying to develop a proof of concept webservice which asynchronously > calls a function in a DLL. The function raises an event when it is finished, > and works when used as part of a windows form. When I try to hook up the > webservice to the event and call the WS, the CPU goes to 100% and I have to > restart the WWW service. > > Does anyone have an idea as to how this can be done ... and if not, > directions to a tall bridge would come in handy. > > Thanks in advance, > > -- > Tim Gallivan > I know I'm a great teacher because when I give a lesson, the person never > comes back. > >
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