IntrusivePtr.compareExchangeWeak

Same as compareExchangeStrong but may fail spuriously.

More info in c++ std::atomic<std::shared_ptr>.

struct IntrusivePtr

scope

bool

compareExchangeWeak

(

MemoryOrder success = MemoryOrder.seq

MemoryOrder failure = success

this This

)

(

ref scope E expected

scope D desired

)

if (

!is(E == shared)

!is(D == shared)

(

isMoveConstructable!(D, This) &&

isMutable!This

)

(

isCopyConstructable!(This, E) &&

isMutable!E

)

(This.isWeak == D.isWeak)

(This.isWeak == E.isWeak)

)

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