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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2014 Mellanox Technologies, Inc.
* All rights reserved.
* Copyright (c) 2014 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2015 Los Alamos National Security, LLC. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "oshmem_config.h"
#include "opal/constants.h"
#include "oshmem/mca/sshmem/sshmem.h"
#include "oshmem/mca/sshmem/base/base.h"
#include "sshmem_mmap.h"
/**
* public string showing the shmem ompi_mmap component version number
*/
const char *mca_sshmem_mmap_component_version_string =
"OSHMEM mmap sshmem MCA component version " OSHMEM_VERSION;
int mca_sshmem_mmap_relocate_backing_file = 0;
char *mca_sshmem_mmap_backing_file_base_dir = NULL;
bool mca_sshmem_mmap_nfs_warning = true;
/**
* local functions
*/
static int mmap_register(void);
static int mmap_open(void);
static int mmap_close(void);
static int mmap_query(mca_base_module_t **module, int *priority);
static int mmap_runtime_query(mca_base_module_t **module,
int *priority,
const char *hint);
/**
* instantiate the public struct with all of our public information
* and pointers to our public functions in it
*/
mca_sshmem_mmap_component_t mca_sshmem_mmap_component = {
/* ////////////////////////////////////////////////////////////////////// */
/* super */
/* ////////////////////////////////////////////////////////////////////// */
{
/**
* common MCA component data
*/
.base_version = {
MCA_SSHMEM_BASE_VERSION_2_0_0,
/* component name and version */
.mca_component_name = "mmap",
MCA_BASE_MAKE_VERSION(component, OSHMEM_MAJOR_VERSION, OSHMEM_MINOR_VERSION,
OSHMEM_RELEASE_VERSION),
.mca_open_component = mmap_open,
.mca_close_component = mmap_close,
.mca_query_component = mmap_query,
.mca_register_component_params = mmap_register,
},
/* MCA v2.0.0 component meta data */
.base_data = {
/* the component is checkpoint ready */
MCA_BASE_METADATA_PARAM_CHECKPOINT
},
.runtime_query = mmap_runtime_query,
},
};
/* ////////////////////////////////////////////////////////////////////////// */
static int
mmap_runtime_query(mca_base_module_t **module,
int *priority,
const char *hint)
{
/* no run-time query needed for mmap, so this is easy */
*priority = mca_sshmem_mmap_component.priority;
*module = (mca_base_module_t *)&mca_sshmem_mmap_module.super;
return OPAL_SUCCESS;
}
/* ////////////////////////////////////////////////////////////////////////// */
static int
mmap_register(void)
{
/* ////////////////////////////////////////////////////////////////////// */
/* (default) priority - set high to make mmap the default */
mca_sshmem_mmap_component.priority = 40;
mca_base_component_var_register (&mca_sshmem_mmap_component.super.base_version,
"priority", "Priority for sshmem mmap "
"component (default: 40)", MCA_BASE_VAR_TYPE_INT,
NULL, 0, MCA_BASE_VAR_FLAG_SETTABLE,
OPAL_INFO_LVL_3,
MCA_BASE_VAR_SCOPE_ALL_EQ,
&mca_sshmem_mmap_component.priority);
mca_sshmem_mmap_component.is_anonymous = 1;
mca_base_component_var_register (&mca_sshmem_mmap_component.super.base_version,
"anonymous", "Select whether anonymous sshmem is used for mmap "
"component (default: 1)", MCA_BASE_VAR_TYPE_INT,
NULL, 0, MCA_BASE_VAR_FLAG_SETTABLE,
OPAL_INFO_LVL_4,
MCA_BASE_VAR_SCOPE_ALL_EQ,
&mca_sshmem_mmap_component.is_anonymous);
mca_sshmem_mmap_component.is_start_addr_fixed = 1;
mca_base_component_var_register (&mca_sshmem_mmap_component.super.base_version,
"fixed", "Select whether fixed start address is used for shmem "
"(default: 1)", MCA_BASE_VAR_TYPE_INT,
NULL, 0, MCA_BASE_VAR_FLAG_SETTABLE,
OPAL_INFO_LVL_4,
MCA_BASE_VAR_SCOPE_ALL_EQ,
&mca_sshmem_mmap_component.is_start_addr_fixed);
return OSHMEM_SUCCESS;
}
/* ////////////////////////////////////////////////////////////////////////// */
static int
mmap_open(void)
{
return OSHMEM_SUCCESS;
}
/* ////////////////////////////////////////////////////////////////////////// */
static int
mmap_query(mca_base_module_t **module, int *priority)
{
*priority = mca_sshmem_mmap_component.priority;
*module = (mca_base_module_t *)&mca_sshmem_mmap_module.super;
return OSHMEM_SUCCESS;
}
/* ////////////////////////////////////////////////////////////////////////// */
static int
mmap_close(void)
{
return OSHMEM_SUCCESS;
}
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