Experimental Physics and
Industrial Control System

"Jeff Hill" <[email protected]> · Wed, 9 Sep 2009 14:51:54 -0600

All,

I recently made some commits to the main trunk. The main changes are as
follows.
o moved the Guard class to reside with class EPICS :: Mutex.
o added referencing capability to EPICS :: Mutex class so that multiple
objects can share the same mutex object
o added new SMP atomic incr/decr/fetch functionality in EPICS :: osi 

// sync target in cache, add one to target, flush target in cache, 
// return new value of target
epicsShareFunc size_t atomicIncr ( size_t & target );
// sync target in cache, subtract one from target, flush target in cache, 
// return new value of target
epicsShareFunc size_t atomicDecr ( size_t & target );
// sync target in cache, return new value of target
epicsShareFunc size_t atomicFetch ( const size_t & target );

This is implemented efficiently currently for win32, vxWorks, Solaris, and
or any build employing GCC 4.1 or higher. Otherwise, if none of the above
apply, a posix threads mutex is used to achieve synchronization. So that
covers probably all of the currently supported OS - including probably also
VMS.

o The build for the new CAS is currently commented out 

Jeff
______________________________________________________
Jeffrey O. Hill           Email        [email protected]
LANL MS H820              Voice        505 665 1831
Los Alamos NM 87545 USA   FAX          505 665 5107

Message content: TSPA

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System