On 2/23/07, Roland McGrath <[EMAIL PROTECTED]> wrote:
> Unfortunatly, due to alignment the NPTL pthread_cond_t grows larger
> than the Linuxthreads version when I add the padding. This is the only
> structure the grows larger in size than before. Is there any way I can
> avoid adding the padding?
It looks to me like you have one word to spare. That's all you really
need. That word will only ever be 1 from old PTHREAD_COND_INITIALIZER.
Checking all three padding words is really just paranoia trying to
distinguish clobbered structs from old initialized data.
I did a couple of tests and I verified that I have no words to spare.
Adding an extra "int __pad" forces the structure to grow by 8 bytes
due to the "long long" alignment requirements.
Would I be allowed to allocated a temporary pthread_cond_t in the
wrapper, store the address in one of the 3 unused lock words, and have
all the wrapper functions use that after allocation?
Cheers,
Carlos.
--
To UNSUBSCRIBE, email to [EMAIL PROTECTED]
with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
