/* -*- 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_free */
#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPI_Request_free = PMPI_Request_free
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_Request_free MPI_Request_free
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_Request_free as PMPI_Request_free
#elif defined(HAVE_WEAK_ATTRIBUTE)
int MPI_Request_free(MPI_Request * request) __attribute__ ((weak, alias("PMPI_Request_free")));
#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_free
#define MPI_Request_free PMPI_Request_free
#endif
#undef FUNCNAME
#define FUNCNAME MPI_Request_free
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
/*@
MPI_Request_free - Frees a communication request object
Input Parameters:
. request - communication request (handle)
Notes:
This routine is normally used to free inactive persistent requests created with
either 'MPI_Recv_init' or 'MPI_Send_init' and friends. It `is` also
permissible to free an active request. However, once freed, the request can no
longer be used in a wait or test routine (e.g., 'MPI_Wait') to determine
completion.
This routine may also be used to free a non-persistent requests such as those
created with 'MPI_Irecv' or 'MPI_Isend' and friends. Like active persistent
requests, once freed, the request can no longer be used with test/wait routines
to determine completion.
.N ThreadSafe
.N Fortran
.N Errors
.N MPI_SUCCESS
.N MPI_ERR_REQUEST
.N MPI_ERR_ARG
.see also: MPI_Isend, MPI_Irecv, MPI_Issend, MPI_Ibsend, MPI_Irsend,
MPI_Recv_init, MPI_Send_init, MPI_Ssend_init, MPI_Rsend_init, MPI_Wait,
MPI_Test, MPI_Waitall, MPI_Waitany, MPI_Waitsome, MPI_Testall, MPI_Testany,
MPI_Testsome
@*/
int MPI_Request_free(MPI_Request * request)
{
int mpi_errno = MPI_SUCCESS;
MPIR_Request *request_ptr = NULL;
MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_REQUEST_FREE);
MPIR_ERRTEST_INITIALIZED_ORDIE();
MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_REQUEST_FREE);
/* Validate handle parameters needing to be converted */
#ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_ERRTEST_ARGNULL(request, "request", mpi_errno);
MPIR_ERRTEST_REQUEST(*request, mpi_errno);
}
MPID_END_ERROR_CHECKS;
}
#endif /* HAVE_ERROR_CHECKING */
/* Convert MPI object handles to object pointers */
MPIR_Request_get_ptr(*request, request_ptr);
/* Validate object pointers 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 ... */
MPID_Progress_poke();
switch (request_ptr->kind) {
case MPIR_REQUEST_KIND__SEND:
{
MPII_SENDQ_FORGET(request_ptr);
break;
}
case MPIR_REQUEST_KIND__RECV:
{
break;
}
case MPIR_REQUEST_KIND__PREQUEST_SEND:
{
/* If this is an active persistent request, we must also
* release the partner request. */
if (request_ptr->u.persist.real_request != NULL) {
if (request_ptr->u.persist.real_request->kind == MPIR_REQUEST_KIND__GREQUEST) {
/* This is needed for persistent Bsend requests */
mpi_errno = MPIR_Grequest_free(request_ptr->u.persist.real_request);
}
MPIR_Request_free(request_ptr->u.persist.real_request);
}
break;
}
case MPIR_REQUEST_KIND__PREQUEST_RECV:
{
/* If this is an active persistent request, we must also
* release the partner request. */
if (request_ptr->u.persist.real_request != NULL) {
MPIR_Request_free(request_ptr->u.persist.real_request);
}
break;
}
case MPIR_REQUEST_KIND__GREQUEST:
{
mpi_errno = MPIR_Grequest_free(request_ptr);
break;
}
/* --BEGIN ERROR HANDLING-- */
default:
{
mpi_errno = MPIR_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
FCNAME, __LINE__, MPI_ERR_OTHER,
"**request_invalid_kind",
"**request_invalid_kind %d", request_ptr->kind);
break;
}
/* --END ERROR HANDLING-- */
}
MPIR_Request_free(request_ptr);
*request = MPI_REQUEST_NULL;
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
/* ... end of body of routine ... */
fn_exit:
MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_REQUEST_FREE);
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_free",
"**mpi_request_free %p", request);
}
#endif
mpi_errno = MPIR_Err_return_comm(0, FCNAME, mpi_errno);
goto fn_exit;
/* --END ERROR HANDLING-- */
}