[PATCH] confdefs: Add declaration for unlimited objects.

Joel Sherrill joel.sherrill at OARcorp.com
Mon Mar 26 21:38:18 UTC 2012

On 03/26/2012 04:31 PM, Gedare Bloom wrote:
> Messed up :) This description should have preceded the patch. Oh well.
> I wrote this because of a request in IRC (By Peer) asking whether a
> similar mechanism existed.
I think this is a handy option. If you will add some documentation
to doc/user/conf.t, then it is OK to apply.
> -Gedare
> On Mon, Mar 26, 2012 at 5:28 PM, Gedare Bloom<gedare at rtems.org>  wrote:
>> This patch adds a macro to ease writing a configuration when the user
>> does not care about resource limits / determinism. Such a case arises
>> frequently when porting software to RTEMS when the precise resource
>> requirements of the software is unknown. By allowing users to declare
>> all resources as being unlimited the user will be able to easily avoid
>> having to identify which resources are included and define the resource
>> limits.
>> I tested this patch only with the unlimited sample, which uses unlimited
>> tasks. The other classic resources and posix resources have not been tested
>> to verify that they will work properly when using unlimited objects. Due
>> to how the posix objects' memory requirements are configured in confdefs
>> this patch does not provide unlimited declarations for posix keys or
>> queued signals.
>> If a user provides a value for a configured number of resources that
>> value will be used instead of the unlimited. If a user does not specify
>> an allocation size the default size of 8 objects is used. This macro does not
>> support varying the allocation sizes for different objects; users who want that
>> much control can define the unlimited macros themselves.
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Joel Sherrill, Ph.D.             Director of Research&   Development
joel.sherrill at OARcorp.com        On-Line Applications Research
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