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+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by The HDF Group. *
+ * Copyright by the Board of Trustees of the University of Illinois. *
+ * All rights reserved. *
+ * *
+ * This file is part of HDF5. The full HDF5 copyright notice, including *
+ * terms governing use, modification, and redistribution, is contained in *
+ * the files COPYING and Copyright.html. COPYING can be found at the root *
+ * of the source code distribution tree; Copyright.html can be found at the *
+ * root level of an installed copy of the electronic HDF5 document set and *
+ * is linked from the top-level documents page. It can also be found at *
+ * http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
+ * access to either file, you may request a copy from help@hdfgroup.org. *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*-------------------------------------------------------------------------
+ *
+ * Created: H5Fmpi.c
+ * Jan 10 2008
+ * Quincey Koziol <koziol@hdfgroup.org>
+ *
+ * Purpose: MPI-related routines.
+ *
+ *-------------------------------------------------------------------------
+ */
+
+/****************/
+/* Module Setup */
+/****************/
+
+#define H5F_PACKAGE /*suppress error about including H5Fpkg */
+
+
+/***********/
+/* Headers */
+/***********/
+#include "H5private.h" /* Generic Functions */
+#include "H5Eprivate.h" /* Error handling */
+#include "H5Fpkg.h" /* File access */
+#include "H5FDmpi.h" /* MPI-based file drivers */
+
+
+/****************/
+/* Local Macros */
+/****************/
+
+
+/******************/
+/* Local Typedefs */
+/******************/
+
+
+/********************/
+/* Package Typedefs */
+/********************/
+
+
+/********************/
+/* Local Prototypes */
+/********************/
+
+
+/*********************/
+/* Package Variables */
+/*********************/
+
+
+/*****************************/
+/* Library Private Variables */
+/*****************************/
+
+
+/*******************/
+/* Local Variables */
+/*******************/
+
+
+#ifdef H5_HAVE_PARALLEL
+
+/*-------------------------------------------------------------------------
+ * Function: H5F_mpi_get_rank
+ *
+ * Purpose: Retrieves the rank of an MPI process.
+ *
+ * Return: Success: The rank (non-negative)
+ *
+ * Failure: Negative
+ *
+ * Programmer: Quincey Koziol
+ * Friday, January 30, 2004
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+int
+H5F_mpi_get_rank(const H5F_t *f)
+{
+ int ret_value;
+
+ FUNC_ENTER_NOAPI(H5F_mpi_get_rank, FAIL)
+
+ assert(f && f->shared);
+
+ /* Dispatch to driver */
+ if ((ret_value=H5FD_mpi_get_rank(f->shared->lf)) < 0)
+ HGOTO_ERROR(H5E_VFL, H5E_CANTGET, FAIL, "driver get_rank request failed")
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_mpi_get_rank() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5F_mpi_get_comm
+ *
+ * Purpose: Retrieves the file's communicator
+ *
+ * Return: Success: The communicator (non-negative)
+ *
+ * Failure: Negative
+ *
+ * Programmer: Quincey Koziol
+ * Friday, January 30, 2004
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+MPI_Comm
+H5F_mpi_get_comm(const H5F_t *f)
+{
+ MPI_Comm ret_value;
+
+ FUNC_ENTER_NOAPI(H5F_mpi_get_comm, MPI_COMM_NULL)
+
+ assert(f && f->shared);
+
+ /* Dispatch to driver */
+ if ((ret_value=H5FD_mpi_get_comm(f->shared->lf))==MPI_COMM_NULL)
+ HGOTO_ERROR(H5E_VFL, H5E_CANTGET, MPI_COMM_NULL, "driver get_comm request failed")
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_mpi_get_comm() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5F_mpi_get_size
+ *
+ * Purpose: Retrieves the size of an MPI process.
+ *
+ * Return: Success: The size (positive)
+ *
+ * Failure: Negative
+ *
+ * Programmer: John Mainzer
+ * Friday, May 6, 2005
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+int
+H5F_mpi_get_size(const H5F_t *f)
+{
+ int ret_value;
+
+ FUNC_ENTER_NOAPI(H5F_mpi_get_size, FAIL)
+
+ assert(f && f->shared);
+
+ /* Dispatch to driver */
+ if ((ret_value=H5FD_mpi_get_size(f->shared->lf)) < 0)
+ HGOTO_ERROR(H5E_VFL, H5E_CANTGET, FAIL, "driver get_size request failed")
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_mpi_get_size() */
+#endif /* H5_HAVE_PARALLEL */
+