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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
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/*
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*
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* (C) 2001 by Argonne National Laboratory.
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* See COPYRIGHT in top-level directory.
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*/
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#include "mpiimpl.h"
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/* -- Begin Profiling Symbol Block for routine MPI_Win_post */
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#if defined(HAVE_PRAGMA_WEAK)
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#pragma weak MPI_Win_post = PMPI_Win_post
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#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
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#pragma _HP_SECONDARY_DEF PMPI_Win_post MPI_Win_post
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#elif defined(HAVE_PRAGMA_CRI_DUP)
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#pragma _CRI duplicate MPI_Win_post as PMPI_Win_post
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#elif defined(HAVE_WEAK_ATTRIBUTE)
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int MPI_Win_post(MPI_Group group, int assert, MPI_Win win)
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__attribute__ ((weak, alias("PMPI_Win_post")));
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#endif
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/* -- End Profiling Symbol Block */
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/* Define MPICH_MPI_FROM_PMPI if weak symbols are not supported to build
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the MPI routines */
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#ifndef MPICH_MPI_FROM_PMPI
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#undef MPI_Win_post
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#define MPI_Win_post PMPI_Win_post
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#endif
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#undef FUNCNAME
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#define FUNCNAME MPI_Win_post
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#undef FCNAME
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#define FCNAME MPL_QUOTE(FUNCNAME)
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/*@
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MPI_Win_post - Start an RMA exposure epoch
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Input Parameters:
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+ group - group of origin processes (handle)
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. assert - Used to optimize this call; zero may be used as a default.
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See notes. (integer)
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- win - window object (handle)
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Notes:
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The 'assert' argument is used to indicate special conditions for the
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fence that an implementation may use to optimize the 'MPI_Win_post'
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operation. The value zero is always correct. Other assertion values
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may be or''ed together. Assertions that are valid for 'MPI_Win_post' are\:
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+ MPI_MODE_NOCHECK - the matching calls to 'MPI_WIN_START' have not yet
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occurred on any origin processes when the call to 'MPI_WIN_POST' is made.
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The nocheck option can be specified by a post call if and only if it is
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specified by each matching start call.
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. MPI_MODE_NOSTORE - the local window was not updated by local stores (or
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local get or receive calls) since last synchronization. This may avoid
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the need for cache synchronization at the post call.
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- MPI_MODE_NOPUT - the local window will not be updated by put or accumulate
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calls after the post call, until the ensuing (wait) synchronization. This
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may avoid the need for cache synchronization at the wait call.
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.N Fortran
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.N Errors
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.N MPI_SUCCESS
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@*/
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int MPI_Win_post(MPI_Group group, int assert, MPI_Win win)
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{
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int mpi_errno = MPI_SUCCESS;
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MPIR_Win *win_ptr = NULL;
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MPIR_Group *group_ptr = NULL;
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MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_WIN_POST);
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MPIR_ERRTEST_INITIALIZED_ORDIE();
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MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
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MPIR_FUNC_TERSE_RMA_ENTER(MPID_STATE_MPI_WIN_POST);
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/* Validate parameters, especially handles needing to be converted */
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#ifdef HAVE_ERROR_CHECKING
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{
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MPID_BEGIN_ERROR_CHECKS;
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{
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MPIR_ERRTEST_WIN(win, mpi_errno);
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MPIR_ERRTEST_GROUP(group, mpi_errno);
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}
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MPID_END_ERROR_CHECKS;
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}
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#endif
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/* Convert MPI object handles to object pointers */
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MPIR_Win_get_ptr(win, win_ptr);
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MPIR_Group_get_ptr(group, group_ptr);
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/* Validate parameters and objects (post conversion) */
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#ifdef HAVE_ERROR_CHECKING
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{
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MPID_BEGIN_ERROR_CHECKS;
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{
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/* Validate win_ptr */
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MPIR_Win_valid_ptr(win_ptr, mpi_errno);
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MPIR_Group_valid_ptr(group_ptr, mpi_errno);
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/* TODO: Validate assert argument */
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/* TODO: Validate that window is not in passive mode */
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if (mpi_errno)
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goto fn_fail;
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}
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MPID_END_ERROR_CHECKS;
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}
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#endif /* HAVE_ERROR_CHECKING */
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/* ... body of routine ... */
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mpi_errno = MPID_Win_post(group_ptr, assert, win_ptr);
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if (mpi_errno != MPI_SUCCESS)
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goto fn_fail;
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/* ... end of body of routine ... */
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fn_exit:
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MPIR_FUNC_TERSE_RMA_EXIT(MPID_STATE_MPI_WIN_POST);
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MPID_THREAD_CS_EXIT(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
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return mpi_errno;
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fn_fail:
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/* --BEGIN ERROR HANDLING-- */
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#ifdef HAVE_ERROR_CHECKING
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{
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mpi_errno =
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MPIR_Err_create_code(mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER,
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"**mpi_win_post", "**mpi_win_post %G %A %W", group, assert, win);
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}
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#endif
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mpi_errno = MPIR_Err_return_win(win_ptr, FCNAME, mpi_errno);
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goto fn_exit;
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/* --END ERROR HANDLING-- */
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}
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