int MPIR_Ibsend_impl(const void *buf, int count, MPI_Datatype datatype, int dest, int tag,
MPIR_Comm * comm_ptr, MPI_Request * request)
{
int mpi_errno = MPI_SUCCESS;
MPIR_Request *request_ptr, *new_request_ptr;
ibsend_req_info *ibinfo = 0;
/* We don't try tbsend in for MPI_Ibsend because we must create a
* request even if we can send the message */
mpi_errno = MPIR_Bsend_isend(buf, count, datatype, dest, tag, comm_ptr, IBSEND, &request_ptr);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
MPII_SENDQ_REMEMBER(request_ptr, dest, tag, comm_ptr->context_id);
/* FIXME: use the memory management macros */
ibinfo = (ibsend_req_info *) MPL_malloc(sizeof(ibsend_req_info), MPL_MEM_BUFFER);
ibinfo->req = request_ptr;
ibinfo->cancelled = 0;
mpi_errno = MPIR_Grequest_start(MPIR_Ibsend_query, MPIR_Ibsend_free,
MPIR_Ibsend_cancel, ibinfo, &new_request_ptr);
if (mpi_errno)
MPIR_ERR_POP(mpi_errno);
/* The request is immediately complete because the MPIR_Bsend_isend has
* already moved the data out of the user's buffer */
MPIR_Grequest_complete(new_request_ptr);
MPIR_OBJ_PUBLISH_HANDLE(*request, new_request_ptr->handle);
fn_exit:
return mpi_errno;
fn_fail:
goto fn_exit;
}
/*@
MPI_Isend - Begins a nonblocking send
Input Parameters:
+ buf - initial address of send buffer (choice)
. count - number of elements in send buffer (integer)
. datatype - datatype of each send buffer element (handle)
. dest - rank of destination (integer)
. tag - message tag (integer)
- comm - communicator (handle)
Output Parameters:
. request - communication request (handle)
.N Fortran
.N Errors
.N MPI_SUCCESS
.N MPI_ERR_COMM
.N MPI_ERR_COUNT
.N MPI_ERR_TYPE
.N MPI_ERR_TAG
.N MPI_ERR_RANK
.N MPI_ERR_EXHAUSTED
@*/
int MPI_Isend(const void *buf, int count, MPI_Datatype datatype, int dest, int tag,
MPI_Comm comm, MPI_Request *request)
{
int mpi_errno = MPI_SUCCESS;
MPIR_Comm *comm_ptr = NULL;
MPIR_Request *request_ptr = NULL;
MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_ISEND);
MPIR_ERRTEST_INITIALIZED_ORDIE();
MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
MPIR_FUNC_TERSE_PT2PT_ENTER_FRONT(MPID_STATE_MPI_ISEND);
/* Validate handle parameters needing to be converted */
# ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_ERRTEST_COMM(comm, mpi_errno);
}
MPID_END_ERROR_CHECKS;
}
# endif /* HAVE_ERROR_CHECKING */
/* Convert MPI object handles to object pointers */
MPIR_Comm_get_ptr( comm, comm_ptr );
/* Validate parameters if error checking is enabled */
# ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_Comm_valid_ptr( comm_ptr, mpi_errno, FALSE );
if (mpi_errno) goto fn_fail;
MPIR_ERRTEST_COUNT(count, mpi_errno);
MPIR_ERRTEST_SEND_RANK(comm_ptr, dest, mpi_errno);
MPIR_ERRTEST_SEND_TAG(tag, mpi_errno);
MPIR_ERRTEST_ARGNULL(request,"request",mpi_errno);
/* Validate datatype handle */
MPIR_ERRTEST_DATATYPE(datatype, "datatype", mpi_errno);
/* Validate datatype object */
if (HANDLE_GET_KIND(datatype) != HANDLE_KIND_BUILTIN)
{
MPIR_Datatype *datatype_ptr = NULL;
MPID_Datatype_get_ptr(datatype, datatype_ptr);
MPIR_Datatype_valid_ptr(datatype_ptr, mpi_errno);
if (mpi_errno) goto fn_fail;
MPID_Datatype_committed_ptr(datatype_ptr, mpi_errno);
if (mpi_errno) goto fn_fail;
}
/* Validate buffer */
MPIR_ERRTEST_USERBUFFER(buf,count,datatype,mpi_errno);
}
MPID_END_ERROR_CHECKS;
}
# endif /* HAVE_ERROR_CHECKING */
/* ... body of routine ... */
mpi_errno = MPID_Isend(buf, count, datatype, dest, tag, comm_ptr,
MPIR_CONTEXT_INTRA_PT2PT, &request_ptr);
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
MPII_SENDQ_REMEMBER(request_ptr,dest,tag,comm_ptr->context_id);
/* return the handle of the request to the user */
/* MPIU_OBJ_HANDLE_PUBLISH is unnecessary for isend, lower-level access is
* responsible for its own consistency, while upper-level field access is
* controlled by the completion counter */
*request = request_ptr->handle;
/* ... end of body of routine ... */
fn_exit:
MPIR_FUNC_TERSE_PT2PT_EXIT(MPID_STATE_MPI_ISEND);
MPID_THREAD_CS_EXIT(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
return mpi_errno;
fn_fail:
/* --BEGIN ERROR HANDLING-- */
# ifdef HAVE_ERROR_CHECKING
{
mpi_errno = MPIR_Err_create_code(
mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER, "**mpi_isend",
"**mpi_isend %p %d %D %i %t %C %p", buf, count, datatype, dest, tag, comm, request);
}
# endif
mpi_errno = MPIR_Err_return_comm( comm_ptr, FCNAME, mpi_errno );
goto fn_exit;
/* --END ERROR HANDLING-- */
}
