/* -*- 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_Wait */
#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPI_Wait = PMPI_Wait
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_Wait MPI_Wait
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_Wait as PMPI_Wait
#elif defined(HAVE_WEAK_ATTRIBUTE)
int MPI_Wait(MPI_Request * request, MPI_Status * status) __attribute__ ((weak, alias("PMPI_Wait")));
#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_Wait
#define MPI_Wait PMPI_Wait
#undef FUNCNAME
#define FUNCNAME MPIR_Wait_impl
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
int MPIR_Wait_impl(MPIR_Request * request_ptr, MPI_Status * status)
{
int mpi_errno = MPI_SUCCESS;
MPID_Progress_state progress_state;
if (request_ptr == NULL)
goto fn_exit;
MPID_Progress_start(&progress_state);
while (!MPIR_Request_is_complete(request_ptr)) {
mpi_errno = MPID_Progress_wait(&progress_state);
if (mpi_errno) {
/* --BEGIN ERROR HANDLING-- */
MPID_Progress_end(&progress_state);
MPIR_ERR_POP(mpi_errno);
/* --END ERROR HANDLING-- */
}
if (unlikely(MPIR_Request_is_anysrc_mismatched(request_ptr))) {
mpi_errno = MPIR_Request_handle_proc_failed(request_ptr);
goto fn_fail;
}
}
MPID_Progress_end(&progress_state);
fn_exit:
return mpi_errno;
fn_fail:
goto fn_exit;
}
#undef FUNCNAME
#define FUNCNAME MPIR_Wait
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
int MPIR_Wait(MPI_Request * request, MPI_Status * status)
{
int mpi_errno = MPI_SUCCESS;
int active_flag;
MPIR_Request *request_ptr = NULL;
/* If this is a null request handle, then return an empty status */
if (*request == MPI_REQUEST_NULL) {
MPIR_Status_set_empty(status);
goto fn_exit;
}
MPIR_Request_get_ptr(*request, request_ptr);
MPIR_Assert(request_ptr != NULL);
if (!MPIR_Request_is_complete(request_ptr)) {
/* If this is an anysource request including a communicator with
* anysource disabled, convert the call to an MPI_Test instead so we
* don't get stuck in the progress engine. */
if (unlikely(MPIR_Request_is_anysrc_mismatched(request_ptr))) {
mpi_errno = MPIR_Test(request, &active_flag, status);
goto fn_exit;
}
if (MPIR_Request_has_poll_fn(request_ptr)) {
while (!MPIR_Request_is_complete(request_ptr)) {
mpi_errno = MPIR_Grequest_poll(request_ptr, status);
if (mpi_errno)
MPIR_ERR_POP(mpi_errno);
/* Avoid blocking other threads since I am inside an infinite loop */
MPID_THREAD_CS_YIELD(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
}
} else {
mpi_errno = MPID_Wait(request_ptr, status);
if (mpi_errno)
MPIR_ERR_POP(mpi_errno);
}
}
mpi_errno = MPIR_Request_completion_processing(request_ptr, status, &active_flag);
if (!MPIR_Request_is_persistent(request_ptr)) {
MPIR_Request_free(request_ptr);
*request = MPI_REQUEST_NULL;
}
if (mpi_errno)
MPIR_ERR_POP(mpi_errno);
fn_exit:
return mpi_errno;
fn_fail:
goto fn_exit;
}
#endif
#undef FUNCNAME
#define FUNCNAME MPI_Wait
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
/*@
MPI_Wait - Waits for an MPI request to complete
Input Parameters:
. request - request (handle)
Output Parameters:
. status - status object (Status). May be 'MPI_STATUS_IGNORE'.
.N waitstatus
.N ThreadSafe
.N Fortran
.N FortranStatus
.N Errors
.N MPI_SUCCESS
.N MPI_ERR_REQUEST
.N MPI_ERR_ARG
@*/
int MPI_Wait(MPI_Request * request, MPI_Status * status)
{
MPIR_Request *request_ptr = NULL;
int mpi_errno = MPI_SUCCESS;
MPIR_Comm *comm_ptr = NULL;
MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_WAIT);
MPIR_ERRTEST_INITIALIZED_ORDIE();
MPID_THREAD_CS_ENTER(VNI_GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
MPIR_FUNC_TERSE_REQUEST_ENTER(MPID_STATE_MPI_WAIT);
/* Check the arguments */
#ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_ERRTEST_ARGNULL(request, "request", mpi_errno);
/* NOTE: MPI_STATUS_IGNORE != NULL */
MPIR_ERRTEST_ARGNULL(status, "status", mpi_errno);
MPIR_ERRTEST_REQUEST_OR_NULL(*request, 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) {
MPIR_Status_set_empty(status);
goto fn_exit;
}
/* Convert MPI request handle to a request object pointer */
MPIR_Request_get_ptr(*request, request_ptr);
/* Validate object pointers if error checking is enabled */
#ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
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 ... */
/* save copy of comm because request will be freed */
if (request_ptr)
comm_ptr = request_ptr->comm;
mpi_errno = MPIR_Wait(request, status);
if (mpi_errno)
goto fn_fail;
/* ... end of body of routine ... */
fn_exit:
MPIR_FUNC_TERSE_REQUEST_EXIT(MPID_STATE_MPI_WAIT);
MPID_THREAD_CS_EXIT(VNI_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_wait", "**mpi_wait %p %p", request, status);
#endif
mpi_errno = MPIR_Err_return_comm(comm_ptr, FCNAME, mpi_errno);
goto fn_exit;
/* --END ERROR HANDLING-- */
}