Question about atomic_cas_ptr

[rama44ster]

Hi,
I am using atomic_cas_ptr from atomic.h provided by solaris 10 for one of my implementations to do an atomic compare and swap. This function atomic_cas_ptr always returns the old value stored in the target. I was wondering if there is any way we can get a boolean true or false to know whether the CAS succeeded in one atomic function call rather than having to check the value of target after calling atomic_cas_ptr.

Thanks a lot.

[Codeplug]

>> rather than having to check the value of target
??
http://docs.sun.com/app/docs/doc/816...-ptr-9f?a=view
The old value of the 'target', "at the time of the call", is returned so you can compare it with 'cmp'. If equal then you know that 'newval' was assigned to 'target' ("at the time of the call").

gg