Re: How To Add a Sequence Point?

[Ian Lance Taylor]

On Sat, Feb 2, 2013 at 5:10 PM, Jeffrey Walton <noloa...@gmail.com> wrote:
>
> What does C/C++ and GCC offer to ensure writes are complete before
> reads are performed on a value in a multi-threaded program?

The write must be done using
    __atomic_store(pointer, value, __ATOMIC_RELEASE);
The read must be done using
    __atomic_load(pointer, pointer_to_value, __ATOMIC_ACQUIRE);

Or you must use other atomic operations with a similar release/acquire
sequence, or using a more strict memory model.

Ian