Atomic primitive proposed to support certain concurrent programming techniques. DCAS takes two not necessarily contiguous memory locations and writes new values into them only if they match pre-supplied "expected" values.
Questions tagged [double-compare-and-swap]
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Atomic swap for smart pointers on x86/x86-64
Is it possible to implement atomic swap for smart pointers on x86/x86-64 without using of transactional memory. Especially interested in atomic exchange for shared_ptr.
There are CMPXCHG8B and CMPXCHG16B instructions on modern processors. Can they…
Tomilov Anatoliy
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Does 32-bit mips cmpxchg(cas) support 8 Bytes?
everyone. I am writing a program in 32-bit mips using double words to avoid ABA problem. But it seems that 32-bit mips does not support 8 Bytes in Linux kernel source code. If so, is there anybody knowing 8 Bytes extension? Are there other ways to…
user2976130
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Does Java support double-width CAS?
Is there a way to perform a double-width (16-byte) compare-and-swap in Java if the hardware supports it (e.g. using CMPXCHG16B on Intel)?
galym
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Can anybody help me with atomicmin function syntax for cuda?
I am unable to get a proper syntax for using atomicMin. I would like to use this function to operate on double rather than integer.
__global__ void npd(int *a, int *g)
{
int index = threadIdx.x;
__shared__ int…
Animesh Ratola
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