Garbage collection in .net

[Reshma Prabhu]

Hello,

I am using singleton class in my application. I want that the
singleton class object onc created should be alive as long as the appliation
is running.
But when I try running my application after say 24 hours, it doesn't work. I
think the object is being killed at some instance of time. Is there any
object life time for singleton objects. i.e. the object gets garbage
collected if not accessed for long amount of time even if we have reference
to that object. If so, how to avoid it?

Thanks,
Reshma

[Daniel O'Connell [C# MVP]]

"Reshma Prabhu" <re***********@persistent.co.in> wrote in message
news:eB**************@TK2MSFTNGP15.phx.gbl...

Hello,

I am using singleton class in my application. I want that the
singleton class object onc created should be alive as long as the
appliation is running.
But when I try running my application after say 24 hours, it doesn't work.
I think the object is being killed at some instance of time. Is there any
object life time for singleton objects. i.e. the object gets garbage
collected if not accessed for long amount of time even if we have
reference to that object. If so, how to avoid it?

No, an object will only be collected if unreferenced. Are you sure that the
singleton is being collected? Are you using ASP.NET or winforms? Can you
provide an error message or stack trace at the failure point(preferably with
associated code)?

[Reshma Prabhu]

I am using ASP.Net? No error comes but the application re-creates the
object.

Thanks,
Reshma
"Daniel O'Connell [C# MVP]" <[e-mail]> wrote in
message news:OZ*************@TK2MSFTNGP15.phx.gbl...

"Reshma Prabhu" <re***********@persistent.co.in> wrote in message
news:eB**************@TK2MSFTNGP15.phx.gbl...

Hello,

I am using singleton class in my application. I want that the
singleton class object onc created should be alive as long as the
appliation is running.
But when I try running my application after say 24 hours, it doesn't
work. I think the object is being killed at some instance of time. Is
there any object life time for singleton objects. i.e. the object gets
garbage collected if not accessed for long amount of time even if we have
reference to that object. If so, how to avoid it?

No, an object will only be collected if unreferenced. Are you sure that
the singleton is being collected? Are you using ASP.NET or winforms? Can
you provide an error message or stack trace at the failure
point(preferably with associated code)?

[Willy Denoyette [MVP]]

"Reshma Prabhu" <re***********@persistent.co.in> wrote in message
news:u4**************@TK2MSFTNGP15.phx.gbl...

I am using ASP.Net? No error comes but the application re-creates the
object.

Thanks,
Reshma

The singleton lifecycle is tied to the containing application domain, when
this one gets recycled your singleton will recycle too. Asp.net might
recycle application domains when certain conditions are met, like memory
threshold, deadlocks no response timeouts etc. You can check this by looking
at the ASP.NET perfcounters (Application restarts I guess).

Willy.