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525

answers:

1
+4  Q: 

Equivalent of InterlockedIncrement in Linux/gcc

It would be a very simple question (could be duplicated), but I was unable to find it.

Win32 API provides a very handy set of atomic operations (as intrinsics) such as InterlockedIncrement which emits lock add x86 code. Also, InterlockedCompareExchange is mapped to lock cmpxchg.

But, I want to do that in Linux with gcc. Since I'm working 64-bit, it's impossible to use inline assembly. Are there intrinsics for gcc?

+10  A: 

GCC Atomic Built-ins

Nikolai N Fetissov  2010-01-24 04:27:09
Thanks! `__sync_fetch_and_add` was the one.
minjang  2010-01-24 05:22:46

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