Integer Pool

[Trecius]

Hello, Newsgroupians:

I have a method that requires me to specify a client handle when I create
the object. The object prototype is as follows...

void Server.CreateMonitor(string strName, int nClientHandle);

When I create the monitor, I have specify a client handle. Therefore, when
using other methods that came with the library, all I need to do is specify a
client handle.

I'd like to create a "handle pool" that will allow me to grab an integer
from the pool and pass that into the function. This is synonymous to
creating a handle in Win32; the handle is unique. Does anyone have any good
resources as to where I can find some good information regarding creating a
pool that will do this for me? I've been doing some searching, but all I can
find is "thread pools" and not "handle pools." Perhaps my terminology is
incorrect?

How does Windows do it to create handles and make them unique?

Thank you,


Trecius

 

[Ashutosh Bhawasinka]

If there is a direct mapping of the Handle with some value, like it's
type (which is not very clear in your description) you can use a
Dictionary like this

Dictionary<int, int> handles = new Dictionary<int, int>();
or
Dictionary<string, int> handles = new Dictionary<string, int>();

Where the key will be the type of handle and it's value will be the
actual handle
Then you can add/set the handle like this

handles["FileHandle"] = xyz;

and you will retrieve or use it like this
int handle = handles["FileHandle"];

Thanks & Regards,
Ashutosh

 

[Trecius]

Thank you, but it's not quite what I'm looking for. I may not know the
strName until runtime. For example, if I were to just start the program, and
I have one element. I want to get one item from the pool -- maybe it will be
1. Now I know that no other item can be 1. Next, if I have another element
at run time, I want to get another handle. I call the pool for another
handle, and it gives me one -- maybe it will be 2. Now maybe I'm done with
the first handle and no longer require it, so I release the handle back to
the pool, so if I call the pool for another handle, it may return a 1 to me
because I had already release it.


Trecius

If there is a direct mapping of the Handle with some value, like it's
type (which is not very clear in your description) you can use a
Dictionary like this

Dictionary<int, int> handles = new Dictionary<int, int>();
or
Dictionary<string, int> handles = new Dictionary<string, int>();

Where the key will be the type of handle and it's value will be the
actual handle
Then you can add/set the handle like this

handles["FileHandle"] = xyz;

and you will retrieve or use it like this
int handle = handles["FileHandle"];

Thanks & Regards,
Ashutosh

Hello, Newsgroupians:

I have a method that requires me to specify a client handle when I create
the object. The object prototype is as follows...

void Server.CreateMonitor(string strName, int nClientHandle);

When I create the monitor, I have specify a client handle. Therefore, when
using other methods that came with the library, all I need to do is specify a
client handle.

I'd like to create a "handle pool" that will allow me to grab an integer
from the pool and pass that into the function. This is synonymous to
creating a handle in Win32; the handle is unique. Does anyone have any good
resources as to where I can find some good information regarding creating a
pool that will do this for me? I've been doing some searching, but all I can
find is "thread pools" and not "handle pools." Perhaps my terminology is
incorrect?

How does Windows do it to create handles and make them unique?

Thank you,


Trecius

 

[Ashutosh Bhawasinka]

Handles are not just any items that you put into a pool and use any
available one.

Each handle (finally) maps to a kernel object in the system. So I am not
sure if your usage is correct.

If all your handles are for a single type of object and you are not
bothered about a particular instance, then you can use a Stack or a
Queue or List to store the handles.

Thank you, but it's not quite what I'm looking for. I may not know the
strName until runtime. For example, if I were to just start the program, and
I have one element. I want to get one item from the pool -- maybe it will be
1. Now I know that no other item can be 1. Next, if I have another element
at run time, I want to get another handle. I call the pool for another
handle, and it gives me one -- maybe it will be 2. Now maybe I'm done with
the first handle and no longer require it, so I release the handle back to
the pool, so if I call the pool for another handle, it may return a 1 to me
because I had already release it.


Trecius

:

If there is a direct mapping of the Handle with some value, like it's
type (which is not very clear in your description) you can use a
Dictionary like this

Dictionary<int, int> handles = new Dictionary<int, int>();
or
Dictionary<string, int> handles = new Dictionary<string, int>();

Where the key will be the type of handle and it's value will be the
actual handle
Then you can add/set the handle like this

handles["FileHandle"] = xyz;

and you will retrieve or use it like this
int handle = handles["FileHandle"];

Thanks & Regards,
Ashutosh

Hello, Newsgroupians:

I have a method that requires me to specify a client handle when I create
the object. The object prototype is as follows...

void Server.CreateMonitor(string strName, int nClientHandle);

When I create the monitor, I have specify a client handle. Therefore, when
using other methods that came with the library, all I need to do is specify a
client handle.

I'd like to create a "handle pool" that will allow me to grab an integer
from the pool and pass that into the function. This is synonymous to
creating a handle in Win32; the handle is unique. Does anyone have any good
resources as to where I can find some good information regarding creating a
pool that will do this for me? I've been doing some searching, but all I can
find is "thread pools" and not "handle pools." Perhaps my terminology is
incorrect?

How does Windows do it to create handles and make them unique?

Thank you,


Trecius