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o no longer need to define OSD_ATOMIC_GCC

Browse Source 
o removed function
epicsAtomicTestAndSetUIntT
o added new functions
epicsAtomicSetPtrT
epicsAtomicGetPtrT
epicsAtomicCmpAndSwapUIntT
epicsAtomicCmpAndSwapPtrT
o changed msvc intrinsics to define memory fence
o fixed mutex synchronized version so that its slow, but correct if the c++ compiler doesnt synchronized local scope static initialization
o changed most of the set/get methods to use memory barriers instead of some other primitive
o added additional tests
This commit is contained in:
Jeff Hill
2011-08-15 17:00:01 -06:00
committed by Andrew Johnson
parent c872c44668
commit bd1b1479f4
10 changed files with 525 additions and 266 deletions
Download Patch File Download Diff File Expand all files Collapse all files

74
src/libCom/test/epicsAtomicPerform.cpp
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@@ -305,46 +305,46 @@ inline void oneThousandAtomicIncr ( size_t & target )
oneHundredAtomicIncr ( target );
}
inline void tenAtomicTestAndSet ( unsigned & target )
inline void tenAtomicCmpAndSwap ( unsigned & target )
{
epicsAtomicTestAndSetUIntT ( & target );
epicsAtomicTestAndSetUIntT ( & target );
epicsAtomicTestAndSetUIntT ( & target );
epicsAtomicTestAndSetUIntT ( & target );
epicsAtomicTestAndSetUIntT ( & target );
epicsAtomicTestAndSetUIntT ( & target );
epicsAtomicTestAndSetUIntT ( & target );
epicsAtomicTestAndSetUIntT ( & target );
epicsAtomicTestAndSetUIntT ( & target );
epicsAtomicTestAndSetUIntT ( & target );
epicsAtomicCmpAndSwapUIntT ( & target, false, true );
epicsAtomicCmpAndSwapUIntT ( & target, false, true );
epicsAtomicCmpAndSwapUIntT ( & target, false, true );
epicsAtomicCmpAndSwapUIntT ( & target, false, true );
epicsAtomicCmpAndSwapUIntT ( & target, false, true );
epicsAtomicCmpAndSwapUIntT ( & target, false, true );
epicsAtomicCmpAndSwapUIntT ( & target, false, true );
epicsAtomicCmpAndSwapUIntT ( & target, false, true );
epicsAtomicCmpAndSwapUIntT ( & target, false, true );
epicsAtomicCmpAndSwapUIntT ( & target, false, true );
}
inline void oneHundredAtomicTestAndSet ( unsigned & target )
inline void oneHundredAtomicCmpAndSwap ( unsigned & target )
{
tenAtomicTestAndSet ( target );
tenAtomicTestAndSet ( target );
tenAtomicTestAndSet ( target );
tenAtomicTestAndSet ( target );
tenAtomicTestAndSet ( target );
tenAtomicTestAndSet ( target );
tenAtomicTestAndSet ( target );
tenAtomicTestAndSet ( target );
tenAtomicTestAndSet ( target );
tenAtomicTestAndSet ( target );
tenAtomicCmpAndSwap ( target );
tenAtomicCmpAndSwap ( target );
tenAtomicCmpAndSwap ( target );
tenAtomicCmpAndSwap ( target );
tenAtomicCmpAndSwap ( target );
tenAtomicCmpAndSwap ( target );
tenAtomicCmpAndSwap ( target );
tenAtomicCmpAndSwap ( target );
tenAtomicCmpAndSwap ( target );
tenAtomicCmpAndSwap ( target );
}
inline void oneThousandAtomicTestAndSet ( unsigned & target )
inline void oneThousandAtomicCmpAndSwap ( unsigned & target )
{
oneHundredAtomicTestAndSet ( target );
oneHundredAtomicTestAndSet ( target );
oneHundredAtomicTestAndSet ( target );
oneHundredAtomicTestAndSet ( target );
oneHundredAtomicTestAndSet ( target );
oneHundredAtomicTestAndSet ( target );
oneHundredAtomicTestAndSet ( target );
oneHundredAtomicTestAndSet ( target );
oneHundredAtomicTestAndSet ( target );
oneHundredAtomicTestAndSet ( target );
oneHundredAtomicCmpAndSwap ( target );
oneHundredAtomicCmpAndSwap ( target );
oneHundredAtomicCmpAndSwap ( target );
oneHundredAtomicCmpAndSwap ( target );
oneHundredAtomicCmpAndSwap ( target );
oneHundredAtomicCmpAndSwap ( target );
oneHundredAtomicCmpAndSwap ( target );
oneHundredAtomicCmpAndSwap ( target );
oneHundredAtomicCmpAndSwap ( target );
oneHundredAtomicCmpAndSwap ( target );
}
inline void tenAtomicSet ( size_t & target )
@@ -421,20 +421,20 @@ void epicsAtomicIncrPerformance ()
testDiag ( "epicsAtomicIncr() takes %f microseconds", delay );
}
void atomicTestAndSetPerformance ()
void atomicCmpAndSwapPerformance ()
{
epicsTime begin = epicsTime::getCurrent ();
unsigned target;
epicsAtomicSetUIntT ( & target, 0 );
testOk1 ( ! target );
for ( unsigned i = 0; i < N; i++ ) {
oneThousandAtomicTestAndSet ( target );
oneThousandAtomicCmpAndSwap ( target );
}
double delay = epicsTime::getCurrent () - begin;
testOk1 ( target );
delay /= N * 1000u; // convert to delay per call
delay *= 1e6; // convert to micro seconds
testDiag ( "epicsAtomicCompareAndSet() takes %f microseconds", delay );
testDiag ( "epicsAtomicCmpAndSwap() takes %f microseconds", delay );
}
void recursiveOwnershipRetPerformance ()
@@ -494,6 +494,6 @@ MAIN(epicsAtomicPerform)
epicsAtomicIncrPerformance ();
recursiveOwnershipRetPerformance ();
ownershipPassRefPerformance ();
atomicCompareAndSetPerformance ();
atomicCmpAndSwapPerformance ();
return testDone();
}