opal_shmem_posix_component_t 57 opal/mca/shmem/posix/shmem_posix.h OPAL_MODULE_DECLSPEC extern opal_shmem_posix_component_t opal_shmem_posix_component_t 72 opal/mca/shmem/posix/shmem_posix_component.c opal_shmem_posix_component_t mca_shmem_posix_component = {