* Allocation from storage pools
@ 1999-06-28 0:00 Andy Askey
1999-06-28 0:00 ` Jeffrey D. Cherry
` (2 more replies)
0 siblings, 3 replies; 5+ messages in thread
From: Andy Askey @ 1999-06-28 0:00 UTC (permalink / raw)
I am trying to figure out the best method (most efficient-least runtime
hit) to allocate/deallocate memory to dynamic objects. Here is what I
want to do, in general:
1) Grab a chunk of memory during program initialization to serve as a
dynamic allocation pool for subsequent object memory allocation.
2) Allocate new objects (various types) from the previous allocated
chunk of memory. I'd like to do something like this:
newobj := new newobj_type; (or some form like that, not necessarily
overloading new, that grabs memory from the chunk)
3) Deallocate the objects when I am done with in (freeing up the memory
from the big chunk).
I am developing in Apex Ada95 on a Solaris OS. I found some
documentation about this in
System.Storage_Pools.Rational.Storage_Pools. I do not really want to
use something that is Apex specific.
My questions:
Does Ada95 give me anything I can use to implement 1,2,&3 above? I can
write my own code fairly easily to do this, but I want to take advantage
of anything already provided by Ada95.
Any help on this topic will be greatly appreciated.
Thanx.
Andy
--
---------------------------------------------------
| Andy Askey |
| Software Engineer |
| Raytheon Systems Company |
| 670 Discovery Drive, Huntsville, AL 35806 |
| Phone: (256) 971-2367 Fax: (256) 971-2306 |
| andrew_j_askey@res.raytheon.com |
---------------------------------------------------
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Allocation from storage pools
1999-06-28 0:00 Allocation from storage pools Andy Askey
@ 1999-06-28 0:00 ` Jeffrey D. Cherry
1999-06-29 0:00 ` JClezy
1999-07-01 0:00 ` Andy Askey
2 siblings, 0 replies; 5+ messages in thread
From: Jeffrey D. Cherry @ 1999-06-28 0:00 UTC (permalink / raw)
Andy,
There are some fine examples of memory management in the Booch
components at
http://www.pogner.demon.co.uk/components/bc
Review the bounded versions for a possible match with your goals. You
can always write your own memory manager to limit the total memory used
for a group of objects. Once again the Booch components will give you a
place to start if this becomes necessary.
Regards,
Jeffrey D. Cherry
Logicon Space and Information Operations
Logicon, Inc.
a Northrop Grumman Company
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Allocation from storage pools
1999-06-28 0:00 Allocation from storage pools Andy Askey
1999-06-28 0:00 ` Jeffrey D. Cherry
@ 1999-06-29 0:00 ` JClezy
1999-06-29 0:00 ` Jeffrey D. Cherry
1999-07-01 0:00 ` Andy Askey
2 siblings, 1 reply; 5+ messages in thread
From: JClezy @ 1999-06-29 0:00 UTC (permalink / raw)
>I am trying to figure out the best method (most efficient-least runtime
>hit) to allocate/deallocate memory to dynamic objects. Here is what I
>want to do, in general:
>
>1) Grab a chunk of memory during program initialization to serve as a
>dynamic allocation pool for subsequent object memory allocation.
>
>2) Allocate new objects (various types) from the previous allocated
>chunk of memory. I'd like to do something like this:
>
> newobj := new newobj_type; (or some form like that, not necessarily
>overloading new, that grabs memory from the chunk)
>
>3) Deallocate the objects when I am done with in (freeing up the memory
>from the big chunk).
>
>I am developing in Apex Ada95 on a Solaris OS. I found some
>documentation about this in
>System.Storage_Pools.Rational.Storage_Pools. I do not really want to
>use something that is Apex specific.
>
>My questions:
>
>Does Ada95 give me anything I can use to implement 1,2,&3 above? I can
>write my own code fairly easily to do this, but I want to take advantage
>of anything already provided by Ada95.
>
I dont know if this will help but Ada 83 & 95 provided private memory pools. I
cant remember the exact syntax however in essence you specify the amount of
storage to be used for a private pool for a particular access type. When an
object is created via new the memory is taken from the private pool not the
heap. This would require you to create a private pool for each access type.
This is briefly covered in Barnes somewhere.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Allocation from storage pools
1999-06-28 0:00 Allocation from storage pools Andy Askey
1999-06-28 0:00 ` Jeffrey D. Cherry
1999-06-29 0:00 ` JClezy
@ 1999-07-01 0:00 ` Andy Askey
2 siblings, 0 replies; 5+ messages in thread
From: Andy Askey @ 1999-07-01 0:00 UTC (permalink / raw)
Thanx for the info. The Booch URL and the Barnes references were
exactly what I was looking for.
Andy
Andy Askey wrote:
>
> I am trying to figure out the best method (most efficient-least runtime
> hit) to allocate/deallocate memory to dynamic objects. Here is what I
> want to do, in general:
>
> 1) Grab a chunk of memory during program initialization to serve as a
> dynamic allocation pool for subsequent object memory allocation.
>
> 2) Allocate new objects (various types) from the previous allocated
> chunk of memory. I'd like to do something like this:
>
> newobj := new newobj_type; (or some form like that, not necessarily
> overloading new, that grabs memory from the chunk)
>
> 3) Deallocate the objects when I am done with in (freeing up the memory
> from the big chunk).
>
> I am developing in Apex Ada95 on a Solaris OS. I found some
> documentation about this in
> System.Storage_Pools.Rational.Storage_Pools. I do not really want to
> use something that is Apex specific.
>
> My questions:
>
> Does Ada95 give me anything I can use to implement 1,2,&3 above? I can
> write my own code fairly easily to do this, but I want to take advantage
> of anything already provided by Ada95.
>
> Any help on this topic will be greatly appreciated.
---------------------------------------------------
| Andy Askey |
| Software Engineer |
| Raytheon Systems Company |
| 670 Discovery Drive, Huntsville, AL 35806 |
| Phone: (256) 971-2367 Fax: (256) 971-2306 |
| andrew_j_askey@res.raytheon.com |
---------------------------------------------------
^ permalink raw reply [flat|nested] 5+ messages in thread
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1999-06-28 0:00 Allocation from storage pools Andy Askey
1999-06-28 0:00 ` Jeffrey D. Cherry
1999-06-29 0:00 ` JClezy
1999-06-29 0:00 ` Jeffrey D. Cherry
1999-07-01 0:00 ` Andy Askey
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