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https://github.com/corda/corda.git
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9441de4c38
This release is used in conjunction with the linux-sgx-driver Intial release: https://github.com/01org/linux-sgx-driver commit-id: 0e865ce5e6b297a787bcdc12d98bada8174be6d7 Intel-id: 33399 Signed-off-by: Angie Chinchilla <angie.v.chinchilla@intel.com>
29 lines
664 B
C
29 lines
664 B
C
#ifndef __has_builtin
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#define __has_builtin(x) 0
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#endif
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#ifndef __has_feature
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#define __has_feature(x) 0
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#endif
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/**
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* Swap macro that enforces a happens-before relationship with a corresponding
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* ATOMIC_LOAD.
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*/
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#if __has_feature(cxx_atomic)
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#define ATOMIC_SWAP(addr, val)\
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__atomic_exchange(addr, val, __ATOMIC_ACQ_REL)
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#elif __has_builtin(__sync_swap)
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#define ATOMIC_SWAP(addr, val)\
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__sync_swap(addr, val)
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#else
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#define ATOMIC_SWAP(addr, val)\
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__sync_lock_test_and_set(addr, val)
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#endif
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#if __has_feature(cxx_atomic)
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#define ATOMIC_LOAD(addr)\
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__atomic_load(addr, __ATOMIC_ACQUIRE)
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#else
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#define ATOMIC_LOAD(addr)\
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(__sync_synchronize(), *addr)
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#endif
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