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Waiting for async webservices to finish.



I am looping through a text file, and with each row, I launch a web service,
asynchronously.

Before I move on to the next step in the process, I want to make sure that
all the web services have completed.

How can I do this?

If I were to just put a Thread.Sleep with some arbitrary number ( say 5
minutes ) would the asynch web services continue to process? Or would they
be frozen while the main thread sleeps?


--
Texeme Textcasting Technology
http://www.texeme.com
Nov 23 '05 #1
30 2897
when u got the IAsyncResult
call this :

ar.AsyncWaitHan dle.WaitOne();
(assume u IAsncResult instance is ar)

it will wait the asnyc call to complete

optioanly , u can call
ar.IsCompleted( ) to decide
--
Can You?You Can.
"ja*****@texeme .com" wrote:


I am looping through a text file, and with each row, I launch a web service,
asynchronously.

Before I move on to the next step in the process, I want to make sure that
all the web services have completed.

How can I do this?

If I were to just put a Thread.Sleep with some arbitrary number ( say 5
minutes ) would the asynch web services continue to process? Or would they
be frozen while the main thread sleeps?


--
Texeme Textcasting Technology
http://www.texeme.com

Nov 23 '05 #2
when u got the IAsyncResult
call this :

ar.AsyncWaitHan dle.WaitOne();
(assume u IAsncResult instance is ar)

it will wait the asnyc call to complete

optioanly , u can call
ar.IsCompleted( ) to decide
--
Can You?You Can.
"ja*****@texeme .com" wrote:


I am looping through a text file, and with each row, I launch a web service,
asynchronously.

Before I move on to the next step in the process, I want to make sure that
all the web services have completed.

How can I do this?

If I were to just put a Thread.Sleep with some arbitrary number ( say 5
minutes ) would the asynch web services continue to process? Or would they
be frozen while the main thread sleeps?


--
Texeme Textcasting Technology
http://www.texeme.com

Nov 23 '05 #3
when u got the IAsyncResult
call this :

ar.AsyncWaitHan dle.WaitOne();
(assume u IAsncResult instance is ar)

it will wait the asnyc call to complete

optioanly , u can call
ar.IsCompleted( ) to decide
--
Can You?You Can.
"ja*****@texeme .com" wrote:


I am looping through a text file, and with each row, I launch a web service,
asynchronously.

Before I move on to the next step in the process, I want to make sure that
all the web services have completed.

How can I do this?

If I were to just put a Thread.Sleep with some arbitrary number ( say 5
minutes ) would the asynch web services continue to process? Or would they
be frozen while the main thread sleeps?


--
Texeme Textcasting Technology
http://www.texeme.com

Nov 23 '05 #4
when u got the IAsyncResult
call this :

ar.AsyncWaitHan dle.WaitOne();
(assume u IAsncResult instance is ar)

it will wait the asnyc call to complete

optioanly , u can call
ar.IsCompleted( ) to decide
--
Can You?You Can.
"ja*****@texeme .com" wrote:


I am looping through a text file, and with each row, I launch a web service,
asynchronously.

Before I move on to the next step in the process, I want to make sure that
all the web services have completed.

How can I do this?

If I were to just put a Thread.Sleep with some arbitrary number ( say 5
minutes ) would the asynch web services continue to process? Or would they
be frozen while the main thread sleeps?


--
Texeme Textcasting Technology
http://www.texeme.com

Nov 23 '05 #5


Ok, after trying a bunch of things, I found that I was being thrown off
by calling the web service locally from my XP machine via studio.

Somehow, it didn't have the power to keep up with some many asynchronous
requests. I then configured the web service to be dynamic in my
client so I could point it to a production deployment running on a w2k
server.

After that I used a mix of the methods suggested here.

I used an ArrayList ( great idea, because since I'm reading a file line
by line, I dont' know in advance how many calls I'm making ).

I can't use the WaitHandles because it's limited to 64.

So, I put the IAsyncResult into the array list and then call the
IsCompleted() method in a while loop on each element.

BillyLiu007 wrote:
when u got the IAsyncResult
call this :

ar.AsyncWaitHan dle.WaitOne();
(assume u IAsncResult instance is ar)

it will wait the asnyc call to complete

optioanly , u can call
ar.IsCompleted( ) to decide

Nov 23 '05 #6


Ok, after trying a bunch of things, I found that I was being thrown off
by calling the web service locally from my XP machine via studio.

Somehow, it didn't have the power to keep up with some many asynchronous
requests. I then configured the web service to be dynamic in my
client so I could point it to a production deployment running on a w2k
server.

After that I used a mix of the methods suggested here.

I used an ArrayList ( great idea, because since I'm reading a file line
by line, I dont' know in advance how many calls I'm making ).

I can't use the WaitHandles because it's limited to 64.

So, I put the IAsyncResult into the array list and then call the
IsCompleted() method in a while loop on each element.

BillyLiu007 wrote:
when u got the IAsyncResult
call this :

ar.AsyncWaitHan dle.WaitOne();
(assume u IAsncResult instance is ar)

it will wait the asnyc call to complete

optioanly , u can call
ar.IsCompleted( ) to decide

Nov 23 '05 #7
Hi,

I'd keep an array of the async delegates themselves and call EndInvoke on
each of the delegates in a loop. Thus, you won't be wasting CPU cycles on
polling the array of IAsyncResult references in a loop.

--
Sincerely,
Dmytro Lapshyn [Visual Developer - Visual C# MVP]
<ja*****@texeme .com> wrote in message news:42******** ******@texeme.c om...


Ok, after trying a bunch of things, I found that I was being thrown off by
calling the web service locally from my XP machine via studio.

Somehow, it didn't have the power to keep up with some many asynchronous
requests. I then configured the web service to be dynamic in my client
so I could point it to a production deployment running on a w2k server.

After that I used a mix of the methods suggested here.

I used an ArrayList ( great idea, because since I'm reading a file line by
line, I dont' know in advance how many calls I'm making ).

I can't use the WaitHandles because it's limited to 64.

So, I put the IAsyncResult into the array list and then call the
IsCompleted() method in a while loop on each element.

BillyLiu007 wrote:
when u got the IAsyncResult
call this :

ar.AsyncWaitHan dle.WaitOne();
(assume u IAsncResult instance is ar)

it will wait the asnyc call to complete optioanly , u can call
ar.IsCompleted( ) to decide


Nov 23 '05 #8
Hi,

I'd keep an array of the async delegates themselves and call EndInvoke on
each of the delegates in a loop. Thus, you won't be wasting CPU cycles on
polling the array of IAsyncResult references in a loop.

--
Sincerely,
Dmytro Lapshyn [Visual Developer - Visual C# MVP]
<ja*****@texeme .com> wrote in message news:42******** ******@texeme.c om...


Ok, after trying a bunch of things, I found that I was being thrown off by
calling the web service locally from my XP machine via studio.

Somehow, it didn't have the power to keep up with some many asynchronous
requests. I then configured the web service to be dynamic in my client
so I could point it to a production deployment running on a w2k server.

After that I used a mix of the methods suggested here.

I used an ArrayList ( great idea, because since I'm reading a file line by
line, I dont' know in advance how many calls I'm making ).

I can't use the WaitHandles because it's limited to 64.

So, I put the IAsyncResult into the array list and then call the
IsCompleted() method in a while loop on each element.

BillyLiu007 wrote:
when u got the IAsyncResult
call this :

ar.AsyncWaitHan dle.WaitOne();
(assume u IAsncResult instance is ar)

it will wait the asnyc call to complete optioanly , u can call
ar.IsCompleted( ) to decide


Nov 23 '05 #9
jabailo,
| So, I put the IAsyncResult into the array list and then call the
| IsCompleted() method in a while loop on each element.
As Dmytro suggests: This is a "bad" idea as you are burning CPU cycles
polling IsCompleted, calling EndSomeMethod causes your loop to wait on a
WaitHandle under the covers, which is much friendlier.

The sample I gave should work with minimal effort.

Hope this helps
Jay

<ja*****@texeme .com> wrote in message news:42******** ******@texeme.c om...
|
|
| Ok, after trying a bunch of things, I found that I was being thrown off
| by calling the web service locally from my XP machine via studio.
|
| Somehow, it didn't have the power to keep up with some many asynchronous
| requests. I then configured the web service to be dynamic in my
| client so I could point it to a production deployment running on a w2k
| server.
|
| After that I used a mix of the methods suggested here.
|
| I used an ArrayList ( great idea, because since I'm reading a file line
| by line, I dont' know in advance how many calls I'm making ).
|
| I can't use the WaitHandles because it's limited to 64.
|
| So, I put the IAsyncResult into the array list and then call the
| IsCompleted() method in a while loop on each element.
|
| BillyLiu007 wrote:
| > when u got the IAsyncResult
| > call this :
| >
| > ar.AsyncWaitHan dle.WaitOne();
| > (assume u IAsncResult instance is ar)
| >
| > it will wait the asnyc call to complete
| >
| > optioanly , u can call
| > ar.IsCompleted( ) to decide
Nov 23 '05 #10

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