rsm_memseg_import_open_barrier, rsm_memseg_import_order_barrier,
rsm_memseg_import_close_barrier - remote memory access error detection
functions
cc [ flag... ] file... -lrsm [ library... ]
#include <rsmapi.h>
int rsm_memseg_import_open_barrier(rsmapi_barrier_t *barrier);
int rsm_memseg_import_order_barrier(rsmapi_barrier_t *barrier);
int rsm_memseg_import_close_barrier(rsmapi_barrier_t *barrier);
The rsm_memseg_import_open_barrier() and
rsm_memseg_import_close_barrier() functions provide a means of remote
memory access error detection when the barrier mode is set to
RSM_BARRIER_MODE_EXPLICIT. Open and close barrier operations define a
span-of-time interval for error detection. A successful close barrier
guarantees that remote memory access covered between the open barrier and
close barrier have completed successfully. Any individual failures which may
have occurred between the open barrier and close barrier occur without any
notification and the failure is not reported until the close barrier.
The rsm_memseg_import_order_barrier() function imposes the
order-of-write completion whereby, with an order barrier, the write
operations issued before the order barrier are all completed before the
operations after the order barrier. Effectively, with the order barrier
call, all writes within one barrier scope are ordered with respect to those
in another barrier scope.
Upon successful completion, these functions return 0. Otherwise, an error value
is returned to indicate the error.
The rsm_memseg_import_open_barrier(),
rsm_memseg_import_order_barrier(), and
rsm_memseg_import_close_barrier() functions can return the following
errors:
RSMERR_BAD_SEG_HNDL
Invalid segment handle
RSMERR_BAD_BARRIER_PTR
Invalid barrier pointer.
The rsm_memseg_close_barrier() and
rsm_memseg_order_barrier() functions can return the following
errors:
RSMERR_BARRIER_UNINITIALIZED
Barrier not initialized.
RSMERR_BARRIER_NOT_OPENED
Barrier not opened.
RSMERR_BARRIER_FAILURE
Memory access error.
RSMERR_CONN_ABORTED
Connection aborted.
See attributes(7) for descriptions of the following attributes:
| ATTRIBUTE
TYPE |
ATTRIBUTE VALUE |
| Interface Stability |
Evolving |
| MT-Level |
MT-Safe |