[Tinyos-help] __attribute__ ((C, spontaneous))

[Tehn Yit Chin]

Philip Levis wrote:
> On Jul 5, 2006, at 11:24 AM, Adam wrote:
> 
>> I notice GenericComm has this following function:
>>
>> TOS_MsgPtr handleReceived(TOS_MsgPtr packet)  __attribute__ ((C,
>> spontaneous))
>>
>> I am curious that what's the difference if we use __attribute__ ((C,
>> spontaneous)) or not to define an global function? I have written  
>> several
>> global function without using the _attribute, it seems working fine  
>> so far.
> 
> 
> Dead code elimination. Spontaneous tells nesC that the function might  
> be called from "elsewhere" and therefore shouldn't be removed.
> 
> Phil

Out of curiosity, would nesC also not perform any optimisation on this 
bit of code as well, or is that left up to avr-gcc?

cheers,
Tehn Yit Chin
Embedded System Engineer, Grey Innovation Pty. Ltd.