Hi all,
I have noticed an amusing macro in the code of hv, here it is ：
#define QNAME 123
#define QNAME_QUEUE_HEAD 0xabc
! And the function-like macro is:
#define STOREQ(_name) \
set _name/**/_QUEUE_HEAD, %g2 \
!......whatever .....
In the code we could see:
......
STOREQ(QNAME)
......
I believe the author want to get this code:
set QNAME_QUEUE_HEAD %g2
I got totally confused by the use of "/**/" in the macro, which seems like
"##" in the C lang macro ,but it seems much different from the C in the
pre-process stage. I believe the macro extension should be:
STOREQ(QNAME) -> STOREQ(123) -> set 123_QUEUE_HEAD %g2 -> -_-b
but it's not ...
Is there anyone could explain the procedure of this macro-extension? AND
is there any docs on this topic?
Thanks a LOT!
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