Am 16.10.2015 um 14:56 schrieb Yann Ylavic:
On Fri, Oct 16, 2015 at 2:48 PM, Yann Ylavic <ylavic....@gmail.com> wrote:
On Fri, Oct 16, 2015 at 2:35 PM, Rainer Jung <rainer.j...@kippdata.de> wrote:
I didn't yet have the time to reproduce and test your patch, but the
APR_ALIGN((size),sizeof(void *)) align approach would not work. The problem
here is that even or especially when building for 32 Bits and then using a
64 Bit data type, the alignment fails. So the pointer size would be 4 here,
but the requirement alignment 8 bytes.
Hm, correct, each integral type (greater than the word) needs be
aligned on its size!
Though the issue here is not accessing the type as an integral, so
aligning on 4 bytes (for 32 bit hardware) should enough for accessing
each scoreborad entry/struct (the members of the structs themselves
will still be aligned according to their type, so they can also be
safely accessed).
Wasn't the bus error occuring in
ws->last_used = apr_time_now();
and the address is
(dbx) print &(ws->last_used)
&ws->last_used = 0xffffffff7bb00094
not divisible by 8 although the data type (not pointer size) is 64 Bit.
Regards,
Rainer
