Atomic operation functions for Linux 32bit and 64bit?

Question

In Windows, atomic operation functions are separated by 32bit and 64bit like this:

• InterlockedIncrement32
• InterlockedIncrement64

Meanwhile, what functions do the same in Linux? What is the function for doing 64-bit variable for __sync_sub_and_fetch ?

Answer 1

__sync_fetch_and_add(adress,value);
__sync_fetch_and_sub(adress,value);

As for my experience, these functions work seamlessly on Linux64_x86

You can find details below

https://gcc.gnu.org/onlinedocs/gcc-4.4.3/gcc/Atomic-Builtins.html