be0de21e6f
This commit looks large, but its really mostly a cleanup step. 1. introduce proper error handling for the return values of fcntl and the fbtl_posix_lock function 2. rename a parameter to more accurately reflect what it does 3. introduce an mca parameter in the fs/ufs component that allows to control what the level of locking the user would like to enforce 4. move the initialization of the fs_block_size parameter from fs/ufs into the common/ompio component. An fs component might be allowed to overwrite this value, but none of the actual fs components do that. Signed-off-by: Edgar Gabriel <egabriel@central.uh.edu>
96 строки
3.8 KiB
C
96 строки
3.8 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2008-2011 University of Houston. All rights reserved.
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* Copyright (c) 2015 Los Alamos National Security, LLC. All rights
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* reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*
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* These symbols are in a file by themselves to provide nice linker
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* semantics. Since linkers generally pull in symbols by object
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* files, keeping these symbols as the only symbols in this file
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* prevents utility programs such as "ompi_info" from having to import
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* entire components just to query their version and parameters.
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*/
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#include "ompi_config.h"
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#include "fs_ufs.h"
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#include "mpi.h"
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int mca_fs_ufs_priority = 10;
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int mca_fs_ufs_lock_algorithm=0; /* auto */
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/*
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* Private functions
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*/
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static int register_component(void);
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/*
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* Public string showing the fs ufs component version number
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*/
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const char *mca_fs_ufs_component_version_string =
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"OMPI/MPI ufs FS MCA component version " OMPI_VERSION;
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/*
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* Instantiate the public struct with all of our public information
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* and pointers to our public functions in it
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*/
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mca_fs_base_component_2_0_0_t mca_fs_ufs_component = {
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/* First, the mca_component_t struct containing meta information
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about the component itself */
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.fsm_version = {
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MCA_FS_BASE_VERSION_2_0_0,
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/* Component name and version */
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.mca_component_name = "ufs",
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MCA_BASE_MAKE_VERSION(component, OMPI_MAJOR_VERSION, OMPI_MINOR_VERSION,
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OMPI_RELEASE_VERSION),
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.mca_register_component_params = register_component,
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},
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.fsm_data = {
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/* This component is checkpointable */
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MCA_BASE_METADATA_PARAM_CHECKPOINT
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},
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.fsm_init_query = mca_fs_ufs_component_init_query, /* get thread level */
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.fsm_file_query = mca_fs_ufs_component_file_query, /* get priority and actions */
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.fsm_file_unquery = mca_fs_ufs_component_file_unquery, /* undo what was done by previous function */
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};
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static int register_component(void)
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{
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mca_fs_ufs_priority = 10;
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(void) mca_base_component_var_register(&mca_fs_ufs_component.fsm_version,
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"priority", "Priority of the fs ufs component",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY,
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&mca_fs_ufs_priority);
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mca_fs_ufs_lock_algorithm = 0;
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(void) mca_base_component_var_register(&mca_fs_ufs_component.fsm_version,
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"lock_algorithm", "Locking algorithm used by the fs ufs component. "
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" 0: auto (default), 1: skip locking, 2: always lock entire file, "
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"3: lock only specific ranges",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY,
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&mca_fs_ufs_lock_algorithm );
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return OMPI_SUCCESS;
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}
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