134 строки
3.9 KiB
C
134 строки
3.9 KiB
C
/*
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* Copyright (c) 2014 Mellanox Technologies, Inc.
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* All rights reserved.
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* Copyright (c) 2014 Cisco Systems, Inc. All rights 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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#include "oshmem_config.h"
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#include "opal/constants.h"
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#include "oshmem/mca/sshmem/sshmem.h"
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#include "oshmem/mca/sshmem/base/base.h"
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#include "sshmem_mmap.h"
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/**
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* public string showing the shmem ompi_mmap component version number
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*/
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const char *mca_sshmem_mmap_component_version_string =
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"OSHMEM mmap sshmem MCA component version " OSHMEM_VERSION;
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int mca_sshmem_mmap_relocate_backing_file = 0;
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char *mca_sshmem_mmap_backing_file_base_dir = NULL;
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bool mca_sshmem_mmap_nfs_warning = true;
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/**
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* local functions
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*/
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static int mmap_register(void);
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static int mmap_open(void);
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static int mmap_close(void);
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static int mmap_query(mca_base_module_t **module, int *priority);
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static int mmap_runtime_query(mca_base_module_t **module,
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int *priority,
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const char *hint);
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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_sshmem_mmap_component_t mca_sshmem_mmap_component = {
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/* ////////////////////////////////////////////////////////////////////// */
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/* super */
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/* ////////////////////////////////////////////////////////////////////// */
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{
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/**
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* common MCA component data
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*/
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{
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MCA_SSHMEM_BASE_VERSION_2_0_0,
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/* component name and version */
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"mmap",
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OSHMEM_MAJOR_VERSION,
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OSHMEM_MINOR_VERSION,
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OSHMEM_RELEASE_VERSION,
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/* component open */
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mmap_open,
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/* component close */
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mmap_close,
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/* component query */
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mmap_query,
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/* component register */
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mmap_register
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},
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/* MCA v2.0.0 component meta data */
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{
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/* the component is checkpoint ready */
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MCA_BASE_METADATA_PARAM_CHECKPOINT
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},
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mmap_runtime_query,
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},
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};
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/* ////////////////////////////////////////////////////////////////////////// */
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static int
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mmap_runtime_query(mca_base_module_t **module,
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int *priority,
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const char *hint)
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{
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/* no run-time query needed for mmap, so this is easy */
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*priority = mca_sshmem_mmap_component.priority;
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*module = (mca_base_module_t *)&mca_sshmem_mmap_module.super;
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return OPAL_SUCCESS;
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}
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/* ////////////////////////////////////////////////////////////////////////// */
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static int
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mmap_register(void)
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{
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/* ////////////////////////////////////////////////////////////////////// */
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/* (default) priority - set high to make mmap the default */
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mca_sshmem_mmap_component.priority = 20;
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mca_base_component_var_register (&mca_sshmem_mmap_component.super.base_version,
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"priority", "Priority for sshmem mmap "
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"component (default: 20)", MCA_BASE_VAR_TYPE_INT,
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NULL, 0, MCA_BASE_VAR_FLAG_SETTABLE,
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OPAL_INFO_LVL_3,
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MCA_BASE_VAR_SCOPE_ALL_EQ,
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&mca_sshmem_mmap_component.priority);
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return OSHMEM_SUCCESS;
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}
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/* ////////////////////////////////////////////////////////////////////////// */
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static int
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mmap_open(void)
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{
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return OSHMEM_SUCCESS;
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}
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/* ////////////////////////////////////////////////////////////////////////// */
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static int
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mmap_query(mca_base_module_t **module, int *priority)
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{
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*priority = mca_sshmem_mmap_component.priority;
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*module = (mca_base_module_t *)&mca_sshmem_mmap_module.super;
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return OSHMEM_SUCCESS;
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}
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/* ////////////////////////////////////////////////////////////////////////// */
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static int
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mmap_close(void)
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{
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return OSHMEM_SUCCESS;
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}
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