Re: [boost] [interprocess] atomic_write32 on GCC/x86/x68_64 lacks memory barrier

Lars Hagström wrote:

Does that "memory" statement at the end add a fence both before and after the assembly statement?

Effectively. To be more precise, it turns the assembly statement into a compiler fence. "memory" tells the compiler to assume that the assembly code accesses and modifies memory in unpredictable ways, and the effect of that is basically a compiler fence. You should probably use the __asm__ and __volatile__ spellings as a matter of style though.