/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
*
* (C) 2001 by Argonne National Laboratory.
* See COPYRIGHT in top-level directory.
*/
#include "mpiimpl.h"
/* -- Begin Profiling Symbol Block for routine MPI_Request_get_status */
#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPI_Request_get_status = PMPI_Request_get_status
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_Request_get_status MPI_Request_get_status
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_Request_get_status as PMPI_Request_get_status
#elif defined(HAVE_WEAK_ATTRIBUTE)
int MPI_Request_get_status(MPI_Request request, int *flag, MPI_Status * status)
__attribute__ ((weak, alias("PMPI_Request_get_status")));
#endif
/* -- End Profiling Symbol Block */
/* Define MPICH_MPI_FROM_PMPI if weak symbols are not supported to build
the MPI routines */
#ifndef MPICH_MPI_FROM_PMPI
#undef MPI_Request_get_status
#define MPI_Request_get_status PMPI_Request_get_status
#endif
#undef FUNCNAME
#define FUNCNAME MPI_Request_get_status
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
/*@
MPI_Request_get_status - Nondestructive test for the completion of a Request
Input Parameters:
. request - request (handle). May be 'MPI_REQUEST_NULL'.
Output Parameters:
+ flag - true if operation has completed (logical)
- status - status object (Status). May be 'MPI_STATUS_IGNORE'.
Notes:
Unlike 'MPI_Test', 'MPI_Request_get_status' does not deallocate or
deactivate the request. A call to one of the test/wait routines or
'MPI_Request_free' should be made to release the request object.
.N ThreadSafe
.N Fortran
.N Errors
.N MPI_SUCCESS
@*/
int MPI_Request_get_status(MPI_Request request, int *flag, MPI_Status * status)
{
int mpi_errno = MPI_SUCCESS;
MPIR_Request *request_ptr = NULL;
MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_REQUEST_GET_STATUS);
MPIR_ERRTEST_INITIALIZED_ORDIE();
MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_REQUEST_GET_STATUS);
/* Check the arguments */
#ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_ERRTEST_REQUEST_OR_NULL(request, mpi_errno);
MPIR_ERRTEST_ARGNULL(flag, "flag", mpi_errno);
/* NOTE: MPI_STATUS_IGNORE != NULL */
MPIR_ERRTEST_ARGNULL(status, "status", mpi_errno);
}
MPID_END_ERROR_CHECKS;
}
#endif /* HAVE_ERROR_CHECKING */
/* If this is a null request handle, then return an empty status */
if (request == MPI_REQUEST_NULL) {
*flag = 1;
MPIR_Status_set_empty(status);
/* the above macro doesn't set MPI_ERROR */
if (status != MPI_STATUS_IGNORE)
status->MPI_ERROR = MPI_SUCCESS;
goto fn_exit;
}
/* Convert MPI object handles to object pointers */
MPIR_Request_get_ptr(request, request_ptr);
/* Validate parameters if error checking is enabled */
#ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
/* Validate request_ptr */
MPIR_Request_valid_ptr(request_ptr, mpi_errno);
if (mpi_errno)
goto fn_fail;
}
MPID_END_ERROR_CHECKS;
}
#endif /* HAVE_ERROR_CHECKING */
/* ... body of routine ... */
if (!MPIR_Request_is_complete(request_ptr)) {
/* request not complete. poke the progress engine. Req #3130 */
mpi_errno = MPID_Progress_test();
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
}
if (MPIR_Request_is_complete(request_ptr)) {
switch (request_ptr->kind) {
case MPIR_REQUEST_KIND__SEND:
{
if (status != MPI_STATUS_IGNORE) {
MPIR_STATUS_SET_CANCEL_BIT(*status,
MPIR_STATUS_GET_CANCEL_BIT(request_ptr->status));
}
mpi_errno = request_ptr->status.MPI_ERROR;
break;
}
case MPIR_REQUEST_KIND__RECV:
{
MPIR_Request_extract_status(request_ptr, status);
mpi_errno = request_ptr->status.MPI_ERROR;
break;
}
case MPIR_REQUEST_KIND__PREQUEST_SEND:
{
MPIR_Request *prequest_ptr = request_ptr->u.persist.real_request;
if (prequest_ptr != NULL) {
if (prequest_ptr->kind != MPIR_REQUEST_KIND__GREQUEST) {
if (status != MPI_STATUS_IGNORE) {
MPIR_STATUS_SET_CANCEL_BIT(*status,
MPIR_STATUS_GET_CANCEL_BIT
(request_ptr->status));
}
mpi_errno = prequest_ptr->status.MPI_ERROR;
} else {
/* This is needed for persistent Bsend requests */
int rc;
rc = MPIR_Grequest_query(prequest_ptr);
if (mpi_errno == MPI_SUCCESS) {
mpi_errno = rc;
}
if (status != MPI_STATUS_IGNORE) {
MPIR_STATUS_SET_CANCEL_BIT(*status,
MPIR_STATUS_GET_CANCEL_BIT
(prequest_ptr->status));
}
if (mpi_errno == MPI_SUCCESS) {
mpi_errno = prequest_ptr->status.MPI_ERROR;
}
}
} else {
if (request_ptr->status.MPI_ERROR != MPI_SUCCESS) {
/* if the persistent request failed to start then
* make the error code available */
if (status != MPI_STATUS_IGNORE) {
MPIR_STATUS_SET_CANCEL_BIT(*status,
MPIR_STATUS_GET_CANCEL_BIT
(request_ptr->status));
}
mpi_errno = request_ptr->status.MPI_ERROR;
} else {
MPIR_Status_set_empty(status);
}
}
break;
}
case MPIR_REQUEST_KIND__PREQUEST_RECV:
{
MPIR_Request *prequest_ptr = request_ptr->u.persist.real_request;
if (prequest_ptr != NULL) {
MPIR_Request_extract_status(prequest_ptr, status);
mpi_errno = prequest_ptr->status.MPI_ERROR;
} else {
/* if the persistent request failed to start then
* make the error code available */
mpi_errno = request_ptr->status.MPI_ERROR;
MPIR_Status_set_empty(status);
}
break;
}
case MPIR_REQUEST_KIND__GREQUEST:
{
int rc;
rc = MPIR_Grequest_query(request_ptr);
if (mpi_errno == MPI_SUCCESS) {
mpi_errno = rc;
}
if (status != MPI_STATUS_IGNORE) {
MPIR_STATUS_SET_CANCEL_BIT(*status,
MPIR_STATUS_GET_CANCEL_BIT(request_ptr->status));
}
MPIR_Request_extract_status(request_ptr, status);
break;
}
default:
break;
}
*flag = TRUE;
} else {
*flag = FALSE;
}
/* --BEGIN ERROR HANDLING-- */
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
/* --END ERROR HANDLING-- */
/* ... end of body of routine ... */
fn_exit:
MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_REQUEST_GET_STATUS);
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_request_get_status",
"**mpi_request_get_status %R %p %p", request, flag,
status);
}
#endif
mpi_errno = MPIR_Err_return_comm(0, FCNAME, mpi_errno);
goto fn_exit;
/* --END ERROR HANDLING-- */
}