We completely disable C11 atomic op support for _Atomic for
all Intel compiler prior to 20200310 (which is currently the
latest released), by switching to our pre-C11 atomic
operations.
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
This commit disables the use of both the builtin and hand-written
atomics if proper C11 atomic support is detected. This is the first
step towards requiring the availability of C11 atomics for the C
compiler used to build Open MPI.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
This commit updates the entire codebase to use specific opal types for
all atomic variables. This is a change from the prior atomic support
which required the use of the volatile keyword. This is the first step
towards implementing support for C11 atomics as that interface
requires the use of types declared with the _Atomic keyword.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
